diff --git a/.gitignore b/.gitignore index dc30cac0d..30910c397 100644 --- a/.gitignore +++ b/.gitignore @@ -53,3 +53,7 @@ about_rv.cpp # Dear ImgGui generated imgui.ini + +# Local golden-test media paths (see src/test/golden/session_manager/fixtures/mp4.env.example) +src/test/golden/session_manager/fixtures/mp4.env +src/test/golden/layer_select/fixtures/layers.env diff --git a/src/lib/app/mu_rvui/mode_manager.mu b/src/lib/app/mu_rvui/mode_manager.mu index 001e736c1..0ea3d9390 100644 --- a/src/lib/app/mu_rvui/mode_manager.mu +++ b/src/lib/app/mu_rvui/mode_manager.mu @@ -295,8 +295,70 @@ class: ModeManagerMode : MinorMode return if is_nil(pymode) then nil else PyMinorMode(pymode); } + method: requestedModeImpl (string; ModeEntry entry) + { + // + // "python" or "mu" when the environment asks for a specific + // implementation of a mode, nil when it does not care and the choice is + // left to whatever the package actually ships. Asking explicitly is what + // lets a Mu->Python port be verified against the Mu behavior while both + // sources are still in the build: the migration's Mu-baseline gate runs + // with RV_MODE_IMPL_=mu. + // + use path; + + let base = without_extension(entry.name), + impl = getenv("RV_MODE_IMPL_%s" % base, nil); + + if (impl neq nil) return if impl == "python" then "python" else "mu"; + + let prefer = getenv("RV_PREFER_PYTHON_MODES", nil); + + if (prefer neq nil) + { + for_each (name; prefer.split(",")) if (name == base) return "python"; + } + + return nil; + } + + method: pythonModuleExists (bool; string name) + { + // + // Whether a Python implementation of this mode is importable, asked + // without importing it and without leaving a Python error set. + // + // It has to be this indirect. python.PyImport_Import() calls + // PyErr_Print() when the module is missing, and most modes are Mu-only, + // so probing by import would print a traceback for every one of them at + // startup. find_spec() reports a missing module as None rather than as an + // error, and None arrives here as a non-nil PyObject, so the answer is in + // the type rather than in is_nil(). + // + try + { + let util = PyImport_Import("importlib.util"); + + if (is_nil(util)) return false; + + let finder = PyObject_GetAttr(util, "find_spec"); + + if (is_nil(finder)) return false; + + let spec = PyObject_CallObject(finder, name); + + return !is_nil(spec) && type_name(Py_TYPE(spec)) != "NoneType"; + } + catch (...) + { + return false; + } + } + method: loadEntry (void; ModeEntry entry) { + use path; + if (!entry.loaded) { State state = data(); @@ -316,8 +378,21 @@ class: ModeManagerMode : MinorMode } let loadStartTime = theTime(); PyMinorMode pymode = nil; - - if (!runtime.load_module(entry.name)) + let requested = requestedModeImpl(entry); + + // + // Python is the default whenever the package ships a Python + // implementation, including when it also still ships a Mu one: the Mu + // modes are being retired package by package, and a ported package + // keeps its .mu source only so the migration's Mu-baseline gate can + // still run against it. So the question is not "is Python being asked + // for" but "is there a Python implementation at all". + // + let usePython = if requested neq nil + then requested == "python" + else pythonModuleExists(path.without_extension(entry.name)); + + if (usePython) { try { @@ -328,11 +403,33 @@ class: ModeManagerMode : MinorMode print("ERROR: while loading python module: %s\n" % exc); } - if (pymode eq nil) throw exception("failed in runtime.load_module"); + // + // A Python implementation that exists but does not load is an + // error, and deliberately NOT a quiet fall-through to Mu. + // + // Falling back looks appealing but is unsound: a Python mode + // registers itself with defineMinorMode() from inside init(), which + // runs near the top of its constructor, so a failure anywhere after + // that point leaves the mode already registered. Loading the Mu + // module next makes its own defineMinorMode() throw "Duplicate + // mode", and that exception is caught upstream and routed to + // showWarning(), which is silent unless -ModeManagerVerbose. The + // net effect was no mode at all and no message — strictly worse + // than reporting the original failure here. + // + if (pymode eq nil) + { + throw exception("python implementation of %s could not be loaded" % entry.name); + } } if (pymode eq nil) { + if (!runtime.load_module(entry.name)) + { + throw exception("failed in runtime.load_module"); + } + if (_verbose) { let foundIt = false; diff --git a/src/lib/app/py_rvui/rv/qtutils.py b/src/lib/app/py_rvui/rv/qtutils.py index f1fcfc97d..5e053920b 100644 --- a/src/lib/app/py_rvui/rv/qtutils.py +++ b/src/lib/app/py_rvui/rv/qtutils.py @@ -16,6 +16,10 @@ from PySide6 import QtGui, QtWidgets from PySide6.QtGui import * from PySide6.QtWidgets import * + + # Qt6 moved QOpenGLWidget out of QtWidgets, so sessionGLView() below + # cannot get it from the star imports. + from PySide6.QtOpenGLWidgets import QOpenGLWidget from shiboken6 import wrapInstance from shiboken6 import getCppPointer except ImportError: diff --git a/src/plugins/rv-packages/maya_tools/maya_tools.mu.in b/src/plugins/rv-packages/maya_tools/maya_tools.mu.in index 9e5b1e96e..dcf6afa58 100644 --- a/src/plugins/rv-packages/maya_tools/maya_tools.mu.in +++ b/src/plugins/rv-packages/maya_tools/maya_tools.mu.in @@ -13,9 +13,77 @@ use app_utils; require io; require extra_commands; require runtime; -require session_manager; +require rvui; +require python; require qt; + +// +// Reaching the session manager from Mu. +// +// The session manager is a Python package now, and a Mu `require` cannot resolve a +// Python module, so this file no longer requires it. Whether it is loaded is +// answered by minorModeFromName(), which finds a Python mode too (it is registered +// as a PyMinorMode carrying the same mode name), and the tree selection is served +// as an internal event that either implementation answers with one node per line. +// + +\: sessionManagerLoaded (bool;) +{ + return rvui.minorModeFromName("session_manager") neq nil; +} + +\: sessionManagerSelectedNodes (string[];) +{ + string[] nodes; + string content = ""; + + // + // Ask the loaded Python mode directly. This is what preserves the original + // semantics: the Mu code this replaced held the mode object and read its tree + // view, which exists from the constructor onward, so the selection was + // readable whether or not the panel was open. RV only dispatches internal + // events to *active* modes, and session_manager is `load: delay`, so relying on + // the event alone reported an empty selection whenever the panel was closed -- + // which silently flipped the menu states below. + // + try + { + let mod = python.PyImport_Import("session_manager"); + + if (!python.is_nil(mod)) + { + let f = python.PyObject_GetAttr(mod, "selectedNodeLines"); + + if (!python.is_nil(f)) + { + content = python.to_string( + python.PyObject_CallObject(f, python.PyTuple_New(0))); + } + } + } + catch (...) + { + content = ""; + } + + // + // Empty means the Python implementation is not the one loaded (its module-level + // mode is nil). The Mu implementation answers the internal event instead, which + // requires it to be active. + // + if (content == "") + { + content = commands.sendInternalEvent("session-manager-selected-nodes", "", ""); + } + + if (content == "") return nodes; + + for_each (n; content.split("\n")) if (n != "") nodes.push_back(n); + + return nodes; +} + require io; function: deb(void; string s) { if (false) print (s + "\n"); } @@ -156,10 +224,10 @@ class: MayaTools : MinorMode method: compareSelected (void; Event event, string style) { - if (session_manager.theMode() eq nil) return; + if (!sessionManagerLoaded()) return; let nodeType = if (style == "tile") then "RVLayoutGroup" else "RVStackGroup", - selected = session_manager.theMode().selectedNodes(); + selected = sessionManagerSelectedNodes(); if (selected.size() < 2) return; @@ -213,18 +281,18 @@ class: MayaTools : MinorMode method: oneViewSelected (int; ) { - if (session_manager.theMode() eq nil) return DisabledMenuState; + if (!sessionManagerLoaded()) return DisabledMenuState; - let nodes = session_manager.theMode().selectedNodes(); + let nodes = sessionManagerSelectedNodes(); return if (nodes.size() == 1) then NeutralMenuState else DisabledMenuState; } method: viewsSelected (int; ) { - if (session_manager.theMode() eq nil) return DisabledMenuState; + if (!sessionManagerLoaded()) return DisabledMenuState; - let nodes = session_manager.theMode().selectedNodes(); + let nodes = sessionManagerSelectedNodes(); return if (nodes.size() >= 2) then NeutralMenuState else DisabledMenuState; } @@ -261,9 +329,9 @@ class: MayaTools : MinorMode method: markCurrentAsTarget (void; Event event) { - if (session_manager.theMode() eq nil) return; + if (!sessionManagerLoaded()) return; - let nodes = session_manager.theMode().selectedNodes(); + let nodes = sessionManagerSelectedNodes(); if (nodes.size() != 1) return; diff --git a/src/plugins/rv-packages/rvnuke/rvnuke_mode.mu.in b/src/plugins/rv-packages/rvnuke/rvnuke_mode.mu.in index ff9b3b40f..408addaf6 100644 --- a/src/plugins/rv-packages/rvnuke/rvnuke_mode.mu.in +++ b/src/plugins/rv-packages/rvnuke/rvnuke_mode.mu.in @@ -12,11 +12,99 @@ require app_utils; require extra_commands; require io; require rvui; +require python; require qt; -require session_manager; require rvnuke_process; require runtime; +// +// Reaching the session manager from Mu. +// +// The session manager is a Python package now, and a Mu `require` cannot resolve a +// Python module, so this file no longer requires it. Two things are still needed +// from it, and each is obtained in a way that works whichever implementation is +// loaded: +// +// * whether it is loaded at all — minorModeFromName() finds a Python mode too, +// since it is registered as a PyMinorMode carrying the same mode name; +// * the current tree selection — served as an internal event, which either +// implementation answers with one node name per line. +// + +\: sessionManagerLoaded (bool;) +{ + return rvui.minorModeFromName("session_manager") neq nil; +} + +\: sessionManagerSelectedNodes (string[];) +{ + string[] nodes; + string content = ""; + + // + // Ask the loaded Python mode directly. This is what preserves the original + // semantics: the Mu code this replaced held the mode object and read its tree + // view, which exists from the constructor onward, so the selection was + // readable whether or not the panel was open. RV only dispatches internal + // events to *active* modes, and session_manager is `load: delay`, so relying on + // the event alone reported an empty selection whenever the panel was closed -- + // which silently flipped the menu states below. + // + try + { + let mod = python.PyImport_Import("session_manager"); + + if (!python.is_nil(mod)) + { + let f = python.PyObject_GetAttr(mod, "selectedNodeLines"); + + if (!python.is_nil(f)) + { + content = python.to_string( + python.PyObject_CallObject(f, python.PyTuple_New(0))); + } + } + } + catch (...) + { + content = ""; + } + + // + // Empty means the Python implementation is not the one loaded (its module-level + // mode is nil). The Mu implementation answers the internal event instead, which + // requires it to be active. + // + if (content == "") + { + content = commands.sendInternalEvent("session-manager-selected-nodes", "", ""); + } + + if (content == "") return nodes; + + for_each (n; content.split("\n")) if (n != "") nodes.push_back(n); + + return nodes; +} + +// +// session_manager.setToolTipProp() inlined: it is a single property write, so +// duplicating it here is cheaper than keeping a cross-package dependency for it. +// + +\: setSessionManagerToolTip (void; string node, string toolTip) +{ + let propName = "%s.sm_state.toolTip" % node; + + if (!commands.propertyExists(propName)) + { + commands.newProperty(propName, commands.StringType, 1); + } + + commands.setStringProperty(propName, string[] {toolTip}, true); +} + + \: decodeNL (string; string str) { regex.replace ("#NL#", str, "\n"); @@ -408,10 +496,10 @@ class: RVNukeMode : rvtypes.MinorMode { deb ("compareSelected %s" % style); - if (session_manager.theMode() eq nil) return; + if (!sessionManagerLoaded()) return; let nodeType = if (style == "tile") then "RVLayoutGroup" else "RVStackGroup", - selected = session_manager.theMode().selectedNodes(); + selected = sessionManagerSelectedNodes(); if (selected.size() < 2) return; @@ -625,7 +713,7 @@ class: RVNukeMode : rvtypes.MinorMode let name = getNukeProp (source, "node"), label = getNukeProp (source, "label"); - if (label != "") session_manager.setToolTipProp (source, label + "\n(node: %s)\n" % name); + if (label != "") setSessionManagerToolTip (source, label + "\n(node: %s)\n" % name); deb (" setUiNameAndTip '%s' inProgess %s, done" % (source, inProgress)); } @@ -1701,9 +1789,9 @@ nuke.executeMultiple((writeNode,), ([%s, %s, %s],)) // Collect target source from session manager selection // { - if (session_manager.theMode() eq nil) return; + if (!sessionManagerLoaded()) return; - let selectedNodes = session_manager.theMode().selectedNodes(); + let selectedNodes = sessionManagerSelectedNodes(); deb (" selectedNodes %s" % selectedNodes); @@ -2131,9 +2219,9 @@ nuke.executeMultiple((writeNode,), ([%s, %s, %s],)) { deb ("restoreCheckpoint()"); - if (session_manager.theMode() eq nil) return; + if (!sessionManagerLoaded()) return; - let selectedNodes = session_manager.theMode().selectedNodes(); + let selectedNodes = sessionManagerSelectedNodes(); deb (" selectedNodes %s" % selectedNodes); @@ -2227,9 +2315,9 @@ nuke.executeMultiple((writeNode,), ([%s, %s, %s],)) { deb ("creatNukeReadNodes()"); - if (session_manager.theMode() eq nil) return; + if (!sessionManagerLoaded()) return; - let selectedNodes = session_manager.theMode().selectedNodes(); + let selectedNodes = sessionManagerSelectedNodes(); deb (" selectedNodes %s" % selectedNodes); @@ -2286,9 +2374,18 @@ nuke.executeMultiple((writeNode,), ([%s, %s, %s],)) method: sourceSelected (int; ) { - if (session_manager.theMode() eq nil) return commands.DisabledMenuState; + if (!sessionManagerLoaded()) return commands.DisabledMenuState; + + let nodes = sessionManagerSelectedNodes(); - let nodes = session_manager.theMode().selectedNodes(); + // + // An empty selection used to fall through the loop and report enabled, so + // the item could be picked and then quietly do nothing. Rarely reachable + // before, because the selection was readable even with the panel closed; + // worth guarding either way, since "no sources selected" is not a state in + // which a source action should be offered. + // + if (nodes.empty()) return commands.DisabledMenuState; for_each (n; nodes) { @@ -2300,18 +2397,18 @@ nuke.executeMultiple((writeNode,), ([%s, %s, %s],)) method: viewsSelected (int; ) { - if (session_manager.theMode() eq nil) return commands.DisabledMenuState; + if (!sessionManagerLoaded()) return commands.DisabledMenuState; - let nodes = session_manager.theMode().selectedNodes(); + let nodes = sessionManagerSelectedNodes(); return if (nodes.size() >= 2) then commands.NeutralMenuState else commands.DisabledMenuState; } method: renderSelected (int; ) { - if (session_manager.theMode() eq nil) return commands.DisabledMenuState; + if (!sessionManagerLoaded()) return commands.DisabledMenuState; - let nodes = session_manager.theMode().selectedNodes(); + let nodes = sessionManagerSelectedNodes(); if (nodes.size() == 1 && getNukeProp(nodes[0], "type") == "current") { @@ -2322,9 +2419,9 @@ nuke.executeMultiple((writeNode,), ([%s, %s, %s],)) method: checkpointSelected (int; ) { - if (session_manager.theMode() eq nil) return commands.DisabledMenuState; + if (!sessionManagerLoaded()) return commands.DisabledMenuState; - let nodes = session_manager.theMode().selectedNodes(); + let nodes = sessionManagerSelectedNodes(); if (nodes.size() == 1) { diff --git a/src/plugins/rv-packages/session_manager/Composite_edit_mode.py b/src/plugins/rv-packages/session_manager/Composite_edit_mode.py new file mode 100644 index 000000000..5efb6e875 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/Composite_edit_mode.py @@ -0,0 +1,346 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Composite edit mode — Python port of Composite_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import functools +import os +import sys + +import rv.commands as commands +import rv.qtutils as qtutils +import rv.rvtypes +import rv.runtime + +from PySide6 import QtCore, QtWidgets +from PySide6.QtUiTools import QUiLoader + +from session_manager import menuItem, setFloatProp, setStringProp + +_OP_NAMES = ( + "over", + "add", + "dissolve", + "difference", + "-difference", + "replace", + "topmost", +) + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +def _smartCycleInputs(forward): + """Cycle the inputs of the view node, or of the stack it is looking through. + + rvui.smartCycleInputs() decides which node to cycle from the current input kept on + the session State, which has no Python binding, so the whole cycle runs in Mu. + """ + rv.runtime.eval( + '{ rvui.smartCycleInputs(%s); "ok"; }' % ("true" if forward else "false"), + ["rvtypes", "commands", "rvui"], + ) + + +def _cycleStackForward(event): + _smartCycleInputs(True) + + +def _cycleStackBackward(event): + _smartCycleInputs(False) + + +def _isStackMode(): + typeName = commands.nodeType(commands.viewNode()) + + if typeName == "RVStackGroup" or typeName == "RVLayoutGroup": + return commands.UncheckedMenuState + + return commands.DisabledMenuState + + +def _disabledItem(): + return commands.DisabledMenuState + + +class CompositeEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def setOp(self, index): + name = "over" + + if index >= 0 and index < len(_OP_NAMES): + name = _OP_NAMES[index] + + setStringProp("#RVStack.composite.type", name) + + # Force UI update immediately after changing blend mode + self.updateUI() + + commands.redraw() + + def setOpEvent(self, event, index): + self.setOp(index) + + def setDissolveAmount(self): + amountText = self._dissolveLineEdit.text() + + try: + amount = float(amountText) + if amount < 0.0: + amount = 0.0 + if amount > 1.0: + amount = 1.0 + + self._dissolveSlider.setValue(int(amount * 100.0)) + + setFloatProp("#RVStack.composite.dissolveAmount", [amount]) + commands.redraw() + except Exception: + self._dissolveLineEdit.setText("0.5") + self._dissolveSlider.setValue(50) + setFloatProp("#RVStack.composite.dissolveAmount", [0.5]) + commands.redraw() + + def setDissolveAmountFromSlider(self, value): + amount = float(value) / 100.0 + + self._dissolveLineEdit.setText("%g" % amount) + + setFloatProp("#RVStack.composite.dissolveAmount", [amount]) + commands.redraw() + + def updateUI(self): + if self._ui is None: + return + + currentType = commands.getStringProperty("#RVStack.composite.type")[0] + index = _OP_NAMES.index(currentType) if currentType in _OP_NAMES else 7 + + self._comboBox.setCurrentIndex(index) + + showDissolve = currentType == "dissolve" + self._dissolveLineEdit.setVisible(showDissolve) + self._dissolveLabel.setVisible(showDissolve) + self._dissolveSlider.setVisible(showDissolve) + + self._ui.adjustSize() + self._ui.updateGeometry() + self._ui.update() + + parent = self._ui.parentWidget() + + if parent is not None: + parent.adjustSize() + parent.update() + + if showDissolve: + try: + amounts = commands.getFloatProperty("#RVStack.composite.dissolveAmount") + if len(amounts) > 0: + amount = amounts[0] + self._dissolveLineEdit.setText("%g" % amount) + self._dissolveSlider.setValue(int(amount * 100.0)) + except Exception: + self._dissolveLineEdit.setText("0.5") + self._dissolveSlider.setValue(50) + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + # + # If a UI name changes we need to update the tree + # + + if comp == "composite": + if name == "type": + self.updateUI() + elif name == "dissolveAmount": + self.updateUI() + + event.reject() + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(manager.auxFilePath("composite.ui"), m) + self._comboBox = self._ui.findChild(QtWidgets.QComboBox, "comboBox") + self._dissolveLineEdit = self._ui.findChild( + QtWidgets.QLineEdit, "dissolveLineEdit" + ) + self._dissolveLabel = self._ui.findChild( + QtWidgets.QLabel, "dissolveLabel" + ) + self._dissolveSlider = self._ui.findChild( + QtWidgets.QSlider, "dissolveSlider" + ) + + self._dissolveLineEdit.setVisible(False) + self._dissolveLabel.setVisible(False) + self._dissolveSlider.setVisible(False) + + manager.addEditor("Composite Function", self._ui) + self._comboBox.currentIndexChanged.connect(self.setOp) + self._dissolveLineEdit.editingFinished.connect(self.setDissolveAmount) + self._dissolveSlider.valueChanged.connect( + self.setDissolveAmountFromSlider + ) + + self.updateUI() + manager.useEditor("Composite Function") + + event.reject() + + def opState(self, n): + def F(): + op = commands.getStringProperty("#RVStack.composite.type")[0] + return commands.CheckedMenuState if op == n else commands.UncheckedMenuState + + return F + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._comboBox = None + self._dissolveLineEdit = None + self._dissolveLabel = None + self._dissolveSlider = None + + self.init( + "Composite_edit_mode", + None, + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + [ + ( + "Stack", + [ + ("Composite Operation", None, None, _disabledItem), + menuItem( + " Over", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=0), + self.opState("over"), + ), + menuItem( + " Add", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=1), + self.opState("add"), + ), + menuItem( + " Dissolve", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=2), + self.opState("dissolve"), + ), + menuItem( + " Difference", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=3), + self.opState("difference"), + ), + menuItem( + " Inverted Difference", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=4), + self.opState("-difference"), + ), + menuItem( + " Replace", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=5), + self.opState("replace"), + ), + menuItem( + " Topmost", + "", + "viewmode_category", + functools.partial(self.setOpEvent, index=6), + self.opState("topmost"), + ), + ("_", None), + menuItem( + "Cycle Forward", + "", + "viewmode_category", + _cycleStackForward, + _isStackMode, + ), + menuItem( + "Cycle Backward", + "", + "viewmode_category", + _cycleStackBackward, + _isStackMode, + ), + ], + ) + ], + "b", + ) + + +def createMode(): + return CompositeEditMode() diff --git a/src/plugins/rv-packages/session_manager/FolderGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/FolderGroup_edit_mode.py new file mode 100644 index 000000000..b9db63e28 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/FolderGroup_edit_mode.py @@ -0,0 +1,196 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Folder group edit mode — Python port of FolderGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import rv.commands as commands +import rv.qtutils as qtutils +import rv.rvtypes +import rv.runtime + +from PySide6 import QtCore, QtWidgets +from PySide6.QtCore import Qt +from PySide6.QtUiTools import QUiLoader + +from session_manager import setStringProp + + +def _activateModeEntry(name, on): + """Activate/deactivate a sibling mode through RV's Mu mode manager. + + commands.activateMode() cannot be used: these modes are declared + `load: delay` in PACKAGE, and it returns successfully while leaving an + unloaded mode inactive. The mode manager lazy-loads the entry first, and it + has no Python binding, so it is reached through the Mu bridge. + """ + rv.runtime.eval( + '{ State s = data(); ' + 'mode_manager.ModeManagerMode mm = s.modeManager; ' + 'mm.activateEntry(mm.findModeEntry("%s"), %s); ' + '"ok"; }' % (name, "true" if on else "false"), + ["rvtypes", "commands", "mode_manager"], + ) + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +class FolderGroupEditMode(rv.rvtypes.MinorMode): + def activateUI(self, on): + currentType = commands.getStringProperty("#RVFolderGroup.mode.viewType")[0] + + if currentType == "switch": + modes = ["Switch_edit_mode"] + elif currentType == "layout": + modes = ["LayoutGroup_edit_mode"] + elif currentType == "stack": + modes = ["StackGroup_edit_mode"] + else: + modes = ["LayoutGroup_edit_mode"] + + for mode in modes: + _activateModeEntry(mode, on) + + def setViewType(self, index): + currentType = commands.getStringProperty("#RVFolderGroup.mode.viewType")[0] + newtype = str(self._viewTypeCombo.itemData(index, Qt.UserRole)) + + if newtype != currentType: + self.activateUI(False) + setStringProp("#RVFolderGroup.mode.viewType", newtype) + commands.redraw() + self.activateUI(True) + + manager = _sessionManagerMode() + + if manager is not None: + manager.reloadEditorTab() + + def updateUI(self): + vnode = commands.viewNode() + vnodeExists = vnode is not None + + if self._ui is None or not vnodeExists: + return + + try: + vtype = commands.getStringProperty("#RVFolderGroup.mode.viewType")[0] + + if vtype == "switch": + index = 0 + elif vtype == "layout": + index = 1 + elif vtype == "stack": + index = 2 + else: + index = 1 + + self._viewTypeCombo.setCurrentIndex(index) + except Exception: + pass + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(manager.auxFilePath("folder.ui"), m) + self._viewTypeCombo = self._ui.findChild( + QtWidgets.QComboBox, "viewTypeCombo" + ) + + self._viewTypeCombo.clear() + self._viewTypeCombo.addItem("Switch", "switch") + self._viewTypeCombo.addItem("Layout", "layout") + self._viewTypeCombo.addItem("Stack", "stack") + + self._viewTypeCombo.currentIndexChanged.connect(self.setViewType) + manager.addEditor("Folder View", self._ui) + + self.updateUI() + manager.useEditor("Folder View") + + event.reject() + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + self.activateUI(True) + + def deactivate(self): + rv.rvtypes.MinorMode.deactivate(self) + self.activateUI(False) + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + if comp == "mode" and name == "viewType": + self.updateUI() + + event.reject() + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._viewTypeCombo = None + + self.init( + "FolderGroup_edit_mode", + None, + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + None, + None, + ) + + +def createMode(): + return FolderGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/LayoutGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/LayoutGroup_edit_mode.py new file mode 100644 index 000000000..c946888c8 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/LayoutGroup_edit_mode.py @@ -0,0 +1,373 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Layout group edit mode — Python port of LayoutGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import os +import sys + +import rv.commands as commands +import rv.qtutils as qtutils +import rv.rvtypes +import rv.runtime + +from PySide6 import QtCore, QtWidgets +from PySide6.QtUiTools import QUiLoader + +from session_manager import menuItem + + +def _activateModeEntry(name, on): + """Activate/deactivate a sibling mode through RV's Mu mode manager. + + commands.activateMode() cannot be used: these modes are declared + `load: delay` in PACKAGE, and it returns successfully while leaving an + unloaded mode inactive. The mode manager lazy-loads the entry first, and it + has no Python binding, so it is reached through the Mu bridge. + """ + rv.runtime.eval( + '{ State s = data(); ' + 'mode_manager.ModeManagerMode mm = s.modeManager; ' + 'mm.activateEntry(mm.findModeEntry("%s"), %s); ' + '"ok"; }' % (name, "true" if on else "false"), + ["rvtypes", "commands", "mode_manager"], + ) + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +class LayoutGroupEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def layoutMode(self): + modeProp = "#RVLayoutGroup.layout.mode" + + try: + return commands.getStringProperty(modeProp)[0] + except Exception: + pass + return "" + + def setLayoutMode(self, mode): + modeProp = "#RVLayoutGroup.layout.mode" + commands.setStringProperty(modeProp, [mode], True) + + def setSpacing(self, value): + prop = "#RVLayoutGroup.layout.spacing" + commands.setFloatProperty(prop, [value], True) + + def setGridRowsColumns(self, rows, columns): + prop = "#RVLayoutGroup.layout." + commands.setIntProperty(prop + "gridRows", [rows], True) + commands.setIntProperty(prop + "gridColumns", [columns], True) + + self.setLayoutMode("grid") + + def updateUI(self): + if self._ui is None: + return + + try: + self._modeCombo.setCurrentIndex( + { + "packed": 0, + "packed2": 1, + "row": 2, + "column": 3, + "grid": 4, + "manual": 5, + }.get(self.layoutMode(), 6) + ) + + sp = commands.getFloatProperty("#RVLayoutGroup.layout.spacing")[0] + self._spacingSlider.setValue( + int((max(0.5, min(1.0, sp)) * 2.0 - 1.0) * 999.0) + ) + + r = commands.getIntProperty("#RVLayoutGroup.layout.gridRows")[0] + self._gridRowsLineEdit.setText("%d" % r) + + c = commands.getIntProperty("#RVLayoutGroup.layout.gridColumns")[0] + self._gridColumnsLineEdit.setText("%d" % c) + except Exception: + self._modeCombo.setCurrentIndex(0) + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + if comp == "layout" and self._ui is not None: + if name in ("mode", "spacing", "gridRows", "gridColumns"): + self.updateUI() + commands.redraw() + + event.reject() + + def spacingSliderChangedSlot(self, value): + self.setSpacing(float(value) / 999.0 / 2.0 + 0.5) + + def gridRowsChangedSlot(self): + newRows = int(self._gridRowsLineEdit.text()) + + self.setGridRowsColumns(newRows, 0) + commands.redraw() + + def gridColumnsChangedSlot(self): + newColumns = int(self._gridColumnsLineEdit.text()) + + self.setGridRowsColumns(0, newColumns) + commands.redraw() + + def modeComboChangedSlot(self, index): + if index == 0: + self.layoutPacked() + elif index == 1: + self.layoutPacked2() + elif index == 2: + self.layoutInRow() + elif index == 3: + self.layoutInColumn() + elif index == 4: + self.layoutInGrid() + elif index == 5: + self.layoutManually() + else: + self.layoutStatic() + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(self.auxFilePath("layout.ui"), m) + self._modeCombo = self._ui.findChild(QtWidgets.QComboBox, "modeCombo") + self._spacingSlider = self._ui.findChild( + QtWidgets.QSlider, "spacingSlider" + ) + self._gridRowsLineEdit = self._ui.findChild( + QtWidgets.QLineEdit, "gridRowsLineEdit" + ) + self._gridColumnsLineEdit = self._ui.findChild( + QtWidgets.QLineEdit, "gridColumnsLineEdit" + ) + + manager.addEditor("Layout", self._ui) + self._modeCombo.currentIndexChanged.connect(self.modeComboChangedSlot) + self._spacingSlider.sliderMoved.connect(self.spacingSliderChangedSlot) + self._gridRowsLineEdit.editingFinished.connect(self.gridRowsChangedSlot) + self._gridColumnsLineEdit.editingFinished.connect( + self.gridColumnsChangedSlot + ) + + self.updateUI() + manager.useEditor("Layout") + + event.reject() + + def layoutInRow(self): + self.setLayoutMode("row") + self.activateTransformMode(False) + + def layoutInColumn(self): + self.setLayoutMode("column") + self.activateTransformMode(False) + + def layoutPacked(self): + self.setLayoutMode("packed") + self.activateTransformMode(False) + + def layoutInGrid(self): + self.setLayoutMode("grid") + self.activateTransformMode(False) + + def layoutPacked2(self): + self.setLayoutMode("packed2") + self.activateTransformMode(False) + + def layoutManually(self): + self.setLayoutMode("manual") + self.activateTransformMode(True) + + def layoutStatic(self): + self.setLayoutMode("static") + self.activateTransformMode(False) + + def layoutPackedEvent(self, event): + self.layoutPacked() + + def layoutPacked2Event(self, event): + self.layoutPacked2() + + def layoutInRowEvent(self, event): + self.layoutInRow() + + def layoutInColumnEvent(self, event): + self.layoutInColumn() + + def layoutInGridEvent(self, event): + self.layoutInGrid() + + def layoutManuallyEvent(self, event): + self.layoutManually() + + def layoutStaticEvent(self, event): + self.layoutStatic() + + def activateTransformMode(self, on): + _activateModeEntry("transform_manip", on) + + def activateUI(self, on): + for mode in ["Stack_edit_mode", "Composite_edit_mode"]: + _activateModeEntry(mode, on) + + def deactivate(self): + rv.rvtypes.MinorMode.deactivate(self) + self.activateUI(False) + self.activateTransformMode(False) + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + self.activateUI(True) + self.activateTransformMode(self.layoutMode() == "manual") + + def isLayoutMode(self, name): + def F(): + if self.layoutMode() == name: + return commands.CheckedMenuState + return commands.UncheckedMenuState + + return F + + def menu(self): + return [ + ( + "Layout", + [ + ("Layout Method", None, None, lambda: commands.DisabledMenuState), + menuItem( + " Packed", + "", + "viewmode_category", + self.layoutPackedEvent, + self.isLayoutMode("packed"), + ), + menuItem( + " Packed With Fluid Layout", + "", + "viewmode_category", + self.layoutPacked2Event, + self.isLayoutMode("packed2"), + ), + menuItem( + " Row", + "", + "viewmode_category", + self.layoutInRowEvent, + self.isLayoutMode("row"), + ), + menuItem( + " Column", + "", + "viewmode_category", + self.layoutInColumnEvent, + self.isLayoutMode("column"), + ), + menuItem( + " Grid", + "", + "viewmode_category", + self.layoutInGridEvent, + self.isLayoutMode("grid"), + ), + menuItem( + " Manual", + "", + "viewmode_category", + self.layoutManuallyEvent, + self.isLayoutMode("manual"), + ), + menuItem( + " Static", + "", + "viewmode_category", + self.layoutStaticEvent, + self.isLayoutMode("static"), + ), + ], + ) + ] + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._modeCombo = None + self._spacingSlider = None + self._gridRowsLineEdit = None + self._gridColumnsLineEdit = None + + self.init( + "LayoutGroup_edit_mode", + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + None, + self.menu(), + "a", + ) + + self.activateTransformMode(self.layoutMode() == "manual") + + +def createMode(): + return LayoutGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/RetimeGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/RetimeGroup_edit_mode.py new file mode 100644 index 000000000..aa2ef15c8 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/RetimeGroup_edit_mode.py @@ -0,0 +1,472 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Retime group edit mode — Python port of RetimeGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import functools +import os +import sys + +import rv.commands as commands +import rv.qtutils as qtutils +import rv.rvtypes +import rv.runtime + +from PySide6 import QtCore, QtWidgets +from PySide6.QtUiTools import QUiLoader + +from session_manager import menuItem, setFloatProp, setIntProp + +# +# Internal events used to reach the Mu side of the raw-parameter menu items, and to +# carry the entered text back from RV's text entry mode. +# +_PARAMETER_MODES = ( + ("retime-group-edit-visual-scale", "#RVRetime.visual.scale", 0.05, 1.0), + ("retime-group-edit-visual-offset", "#RVRetime.visual.offset", 0.05, 0.0), + ("retime-group-edit-audio-scale", "#RVRetime.audio.scale", 0.05, 1.0), + ("retime-group-edit-audio-offset", "#RVRetime.audio.offset", 0.05, 0.0), +) +_TEXT_ENTRY_COMMIT_EVENT = "retime-group-text-entry-commit" + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +def _bindParameterModes(modeName): + """Bind rvui's parameter scrubbing handlers into this mode's event table. + + rvui.startParameterMode() returns a Mu event handler that pushes the paramscrub + event table and draws a feedback glyph; neither has a Python binding, and a Mu + event handler cannot be called from Python because it needs an Event. Binding it + to an internal event name lets the menu items reach it through + sendInternalEvent(). The mode must already be defined, so this runs after init(). + """ + binds = "".join( + 'commands.bind("%s", "global", "%s", ' + 'rvui.startParameterMode("%s", %r, %r), "Edit %s"); ' + % (modeName, event, param, scale, reset, param) + for event, param, scale, reset in _PARAMETER_MODES + ) + + rv.runtime.eval('{ %s"ok"; }' % binds, ["rvtypes", "commands", "rvui"]) + + +def _startTextEntryMode(prompt, commitEvent): + """Start RV's text entry mode, committing the entered text as an internal event. + + rvui.startTextEntryMode() wants a Mu prompt function and a Mu commit function, + which Python cannot supply, so the session State fields it would set are set here + instead and the text comes back as `commitEvent`. Unlike the Mu original this + cannot seed the entry with a digit typed to open it, which only applies to key + bindings; the menu items this serves open the entry empty either way. + """ + escaped = prompt.replace("\\", "\\\\").replace('"', '\\"') + + rv.runtime.eval( + "{ State s = data(); " + 's.prompt = "%s"; ' + 's.textFunc = \\: (void; string t) { sendInternalEvent("%s", t); }; ' + "s.textEntry = true; " + "s.textOkWhenEmpty = false; " + 's.text = ""; ' + 'pushEventTable("textentry"); ' + "redraw(); " + '"ok"; }' % (escaped, commitEvent), + ["rvtypes", "commands", "rvui"], + ) + + +def _enabledItem(): + return commands.NeutralMenuState + + +def _disabledItem(): + return commands.DisabledMenuState + + +class RetimeGroupEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def reset(self): + setFloatProp("#RVRetime.visual.scale", 1.0) + setFloatProp("#RVRetime.visual.offset", 0.0) + setFloatProp("#RVRetime.audio.scale", 1.0) + setFloatProp("#RVRetime.audio.offset", 0.0) + commands.redraw() + + def reverse(self): + length = commands.frameEnd() - commands.frameStart() + scl = commands.getFloatProperty("#RVRetime.visual.scale")[0] + + if scl < 0: + setFloatProp("#RVRetime.visual.scale", 1.0) + setIntProp("#RVRetime.visual.offset", 0) + setFloatProp("#RVRetime.audio.scale", 1.0) + setIntProp("#RVRetime.audio.offset", 0) + else: + setFloatProp("#RVRetime.visual.scale", -1.0) + setFloatProp("#RVRetime.visual.offset", float(-length)) + setFloatProp("#RVRetime.audio.scale", 1.0) + setIntProp("#RVRetime.audio.offset", 0) + + commands.redraw() + + def updateUI(self): + if self._ui is None: + return + + fps = commands.getFloatProperty("#RVRetime.output.fps")[0] + vscale = commands.getFloatProperty("#RVRetime.visual.scale")[0] + ascale = commands.getFloatProperty("#RVRetime.audio.scale")[0] + voffset = commands.getFloatProperty("#RVRetime.visual.offset")[0] + aoffset = commands.getFloatProperty("#RVRetime.audio.offset")[0] + + self._fpsEdit.setText("%g" % fps) + self._vscaleEdit.setText("%g" % vscale) + self._ascaleEdit.setText("%g" % ascale) + self._voffsetEdit.setText("%g" % voffset) + self._aoffsetEdit.setText("%g" % aoffset) + + def resetSlot(self, checked): + self.reset() + + def reverseSlot(self, checked): + self.reverse() + + def editSlot(self, lineEdit, prop): + def F(): + v = float(lineEdit.text()) + setFloatProp("#RVRetime" + prop, v) + if prop == ".output.fps": + commands.setFPS(v) + commands.redraw() + + return F + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(manager.auxFilePath("retime.ui"), m) + self._fpsEdit = self._ui.findChild(QtWidgets.QLineEdit, "fpsEdit") + self._ascaleEdit = self._ui.findChild(QtWidgets.QLineEdit, "ascaleEdit") + self._vscaleEdit = self._ui.findChild(QtWidgets.QLineEdit, "vscaleEdit") + self._aoffsetEdit = self._ui.findChild( + QtWidgets.QLineEdit, "aoffsetEdit" + ) + self._voffsetEdit = self._ui.findChild( + QtWidgets.QLineEdit, "voffsetEdit" + ) + self._resetButton = self._ui.findChild( + QtWidgets.QPushButton, "resetButton" + ) + self._reverseButton = self._ui.findChild( + QtWidgets.QPushButton, "reverseButton" + ) + + manager.addEditor("Retime", self._ui) + + self._resetButton.clicked.connect(self.resetSlot) + self._reverseButton.clicked.connect(self.reverseSlot) + + for edit, prop in [ + (self._fpsEdit, ".output.fps"), + (self._ascaleEdit, ".audio.scale"), + (self._vscaleEdit, ".visual.scale"), + (self._aoffsetEdit, ".audio.offset"), + (self._voffsetEdit, ".visual.offset"), + ]: + edit.editingFinished.connect(self.editSlot(edit, prop)) + + self.updateUI() + manager.useEditor("Retime") + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + node = parts[0] + + if commands.nodeType(node) == "RVRetime": + self.updateUI() + + event.reject() + + def factorPrompt(self, fmt, invert): + factor = commands.getFloatProperty("#RVRetime.visual.scale")[0] + return fmt % (1.0 / factor if invert else factor) + + def slowDownPrompt(self): + return self.factorPrompt("Slow Down by Factor (current=%g):", True) + + def speedUpPrompt(self): + return self.factorPrompt("Speed Up by Factor (current=%g):", False) + + def setFactorValue(self, text, invert): + factor = 1.0 / float(text) if invert else float(text) + setFloatProp("#RVRetime.visual.scale", factor) + commands.redraw() + + def fpsPrompt(self): + return ( + "Convert to FPS (current=%g):" + % commands.getFloatProperty("#RVRetime.output.fps")[0] + ) + + def setConvertFPS(self, text): + newFPS = float(text) + setFloatProp("#RVRetime.output.fps", newFPS) + commands.setFPS(newFPS) + + def convertToFPS(self, event, newFPS): + for src in commands.sourcesRendered(): + setFloatProp("#RVRetime.output.fps", newFPS) + + commands.setFPS(newFPS) + + def resetTiming(self, event): + self.reset() + + def reverseTiming(self, event): + self.reverse() + + def editVScale(self, event): + commands.sendInternalEvent("retime-group-edit-visual-scale", "") + + def editVOffset(self, event): + commands.sendInternalEvent("retime-group-edit-visual-offset", "") + + def editAScale(self, event): + commands.sendInternalEvent("retime-group-edit-audio-scale", "") + + def editAOffset(self, event): + commands.sendInternalEvent("retime-group-edit-audio-offset", "") + + def slowDownFactor(self, event): + self._textCommit = functools.partial(self.setFactorValue, invert=True) + _startTextEntryMode(self.slowDownPrompt(), _TEXT_ENTRY_COMMIT_EVENT) + + def speedUpFactor(self, event): + self._textCommit = functools.partial(self.setFactorValue, invert=False) + _startTextEntryMode(self.speedUpPrompt(), _TEXT_ENTRY_COMMIT_EVENT) + + def editFPS(self, event): + self._textCommit = self.setConvertFPS + _startTextEntryMode(self.fpsPrompt(), _TEXT_ENTRY_COMMIT_EVENT) + + def textEntryCommitted(self, event): + commit = self._textCommit + self._textCommit = None + + if commit is not None: + commit(event.contents()) + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._fpsEdit = None + self._voffsetEdit = None + self._aoffsetEdit = None + self._vscaleEdit = None + self._ascaleEdit = None + self._reverseButton = None + self._resetButton = None + self._textCommit = None + + self.init( + "RetimeGroup_edit_mode", + None, + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ( + _TEXT_ENTRY_COMMIT_EVENT, + self.textEntryCommitted, + "Apply text entered in the retime prompts", + ), + ], + [ + ( + "Retime", + [ + ( + "Convert to FPS", + [ + menuItem( + "24", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=24.0), + _enabledItem, + ), + menuItem( + "25", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=25.0), + _enabledItem, + ), + menuItem( + "23.98", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=23.98), + _enabledItem, + ), + menuItem( + "29.97", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=29.97), + _enabledItem, + ), + menuItem( + "30", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=30.0), + _enabledItem, + ), + menuItem( + "59.94", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=59.94), + _enabledItem, + ), + menuItem( + "60", + "", + "viewmode_category", + functools.partial(self.convertToFPS, newFPS=60.0), + _enabledItem, + ), + ("_", None), + menuItem( + "Custom...", + "", + "viewmode_category", + self.editFPS, + _enabledItem, + ), + ], + ), + ("_", None), + menuItem( + "Slow Down by Factor...", + "", + "viewmode_category", + self.slowDownFactor, + _enabledItem, + ), + menuItem( + "Speed Up By Factor...", + "", + "viewmode_category", + self.speedUpFactor, + _enabledItem, + ), + menuItem( + "Reverse", + "", + "viewmode_category", + self.reverseTiming, + _enabledItem, + ), + ("_", None), + ("Edit Raw", None, None, _disabledItem), + menuItem( + " Visual Scale...", + "", + "viewmode_category", + self.editVScale, + _enabledItem, + ), + menuItem( + " Visual Offset...", + "", + "viewmode_category", + self.editVOffset, + _enabledItem, + ), + menuItem( + " Audio Scale...", + "", + "viewmode_category", + self.editAScale, + _enabledItem, + ), + menuItem( + " Audio Offset...", + "", + "viewmode_category", + self.editAOffset, + _enabledItem, + ), + ("_", None), + menuItem( + "Reset Timing", + "", + "viewmode_category", + self.resetTiming, + _enabledItem, + ), + ], + ) + ], + None, + ) + + _bindParameterModes("RetimeGroup_edit_mode") + + +def createMode(): + return RetimeGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/SequenceGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/SequenceGroup_edit_mode.py new file mode 100644 index 000000000..93176b7b3 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/SequenceGroup_edit_mode.py @@ -0,0 +1,320 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Sequence group edit mode — Python port of SequenceGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import functools +import os +import sys + +import rv.commands as commands +import rv.qtutils as qtutils +import rv.rvtypes + +from PySide6 import QtCore, QtWidgets +from PySide6.QtCore import Qt +from PySide6.QtUiTools import QUiLoader + +from session_manager import checkStateIsChecked, menuItem, setFloatProp, setIntProp + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +class SequenceGroupEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def beforeSessionRead(self, event): + self._disableUpdates = True + event.reject() + + def afterSessionRead(self, event): + self._disableUpdates = False + self.updateUI() + event.reject() + + def updateUI(self): + if self._ui is None or self._disableUpdates: + return + + try: + if not commands.propertyExists("#RVSequence.mode.autoEDL"): + return + except Exception: + return + + a = commands.getIntProperty("#RVSequence.mode.autoEDL")[0] + u = commands.getIntProperty("#RVSequence.mode.useCutInfo")[0] + r = commands.getIntProperty("#RVSequenceGroup.timing.retimeInputs")[0] + fps = commands.getFloatProperty("#RVSequence.output.fps")[0] + asize = commands.getIntProperty("#RVSequence.output.autoSize")[0] + size = commands.getIntProperty("#RVSequence.output.size") + isize = commands.getIntProperty("#RVSequence.output.interactiveSize")[0] + + self._outputWidthEdit.setEnabled(asize == 0 and isize == 0) + self._outputHeightEdit.setEnabled(asize == 0 and isize == 0) + + self._autoEDLCheckBox.setCheckState(Qt.Unchecked if a == 0 else Qt.Checked) + self._useCutInfoCheckBox.setCheckState(Qt.Unchecked if u == 0 else Qt.Checked) + self._retimeCheckBox.setCheckState(Qt.Unchecked if r == 0 else Qt.Checked) + self._autoSizeCheckBox.setCheckState(Qt.Unchecked if asize == 0 else Qt.Checked) + self._outputFPSEdit.setText("%g" % fps) + self._outputWidthEdit.setText("%d" % size[0]) + self._outputHeightEdit.setText("%d" % size[-1]) + self._interactiveSizeCheckBox.setCheckState( + Qt.Unchecked if isize == 0 else Qt.Checked + ) + + def updateUIEvent(self, event): + event.reject() + self.updateUI() + + def fpsChanged(self): + newFPS = float(self._outputFPSEdit.text()) + oldFPS = commands.getFloatProperty("#RVSequence.output.fps")[0] + if newFPS != oldFPS: + setFloatProp("#RVSequence.output.fps", newFPS) + commands.setFPS(newFPS) + commands.redraw() + + def widthChanged(self): + val = float(self._outputWidthEdit.text()) + prop = commands.getIntProperty("#RVSequence.output.size") + + commands.setIntProperty("#RVSequence.output.size", [int(val), prop[-1]]) + commands.redraw() + + def heightChanged(self): + val = float(self._outputHeightEdit.text()) + prop = commands.getIntProperty("#RVSequence.output.size") + + commands.setIntProperty("#RVSequence.output.size", [prop[0], int(val)]) + commands.redraw() + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + # + # If a UI name changes we need to update the tree + # + + if comp == "mode" or comp == "output": + if name in ( + "autoEDL", + "autoSize", + "useCutInfo", + "width", + "fps", + "height", + "interactiveSize", + ): + self.updateUI() + commands.redraw() + + event.reject() + + def checkBoxSlot(self, state, name): + current = commands.getIntProperty(name)[0] + value = 1 if checkStateIsChecked(state) else 0 + if value != current: + setIntProp(name, value) + + def activateUI(self): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(manager.auxFilePath("sequence.ui"), m) + self._autoEDLCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "autoEDLCheckBox" + ) + self._useCutInfoCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "useCutInfoCheckBox" + ) + self._retimeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "retimeInputsCheckBox" + ) + self._outputFPSEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputFPSEdit" + ) + self._outputWidthEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputWidthEdit" + ) + self._outputHeightEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputHeightEdit" + ) + self._autoSizeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "autoSizeCheckBox" + ) + self._interactiveSizeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "interactiveResizeCheckBox" + ) + manager.addEditor("Sequence", self._ui) + + self._autoEDLCheckBox.stateChanged.connect( + functools.partial(self.checkBoxSlot, name="#RVSequence.mode.autoEDL") + ) + self._useCutInfoCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSequence.mode.useCutInfo" + ) + ) + self._autoSizeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSequence.output.autoSize" + ) + ) + self._retimeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSequenceGroup.timing.retimeInputs" + ) + ) + self._interactiveSizeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSequence.output.interactiveSize" + ) + ) + + self._outputFPSEdit.editingFinished.connect(self.fpsChanged) + self._outputWidthEdit.editingFinished.connect(self.widthChanged) + self._outputHeightEdit.editingFinished.connect(self.heightChanged) + + self.updateUI() + manager.useEditor("Sequence") + + def loadUI(self, event): + self._disableUpdates = False + self.activateUI() + event.reject() + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + self._disableUpdates = False + self.activateUI() + + def autoEDL(self, event): + p = "#RVSequence.mode.autoEDL" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def useCutInfo(self, event): + p = "#RVSequence.mode.useCutInfo" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def stateFunc(self, name): + def F(): + p = commands.getIntProperty("#RVSequence.mode.%s" % name)[0] + return commands.UncheckedMenuState if p == 0 else commands.CheckedMenuState + + return F + + def menu(self): + return [ + ( + "Sequence", + [ + ("_", None), + menuItem( + "Auto EDL", + "", + "viewmode_category", + self.autoEDL, + self.stateFunc("autoEDL"), + ), + menuItem( + "Use Source Cut Info", + "", + "viewmode_category", + self.useCutInfo, + self.stateFunc("useCutInfo"), + ), + ], + ) + ] + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._autoEDLCheckBox = None + self._useCutInfoCheckBox = None + self._retimeCheckBox = None + self._autoSizeCheckBox = None + self._interactiveSizeCheckBox = None + self._outputFPSEdit = None + self._outputWidthEdit = None + self._outputHeightEdit = None + self._disableUpdates = False + + self.init( + "SequenceGroup_edit_mode", + None, + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("range-changed", self.updateUIEvent, "Update UI on range change"), + ( + "image-structure-change", + self.updateUIEvent, + "Update UI on range change", + ), + ("before-session-read", self.beforeSessionRead, "Freeze Updates"), + ("after-session-read", self.afterSessionRead, "Resume Updates"), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + self.menu(), + None, + ) + + +def createMode(): + return SequenceGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/SourceGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/SourceGroup_edit_mode.py new file mode 100644 index 000000000..a722eb5ae --- /dev/null +++ b/src/plugins/rv-packages/session_manager/SourceGroup_edit_mode.py @@ -0,0 +1,404 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Source group edit mode — Python port of SourceGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import os +import sys + +import rv.commands as commands +import rv.qtutils as qtutils +import rv.rvtypes + +from PySide6 import QtCore, QtWidgets +from PySide6.QtCore import Qt +from PySide6.QtUiTools import QUiLoader + +from session_manager import menuItem, setIntProp + +# Mu's int.max, the value the cut properties carry when no cut point is set. +MU_INT_MAX = 2**31 - 1 + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +def startTextEntryMode(prompt, func, okWhenEmpty=False): + """Build the event handler rvui.startTextEntryMode() returns in Mu. + + RV's in-viewport text entry keeps its prompt and its commit callback in the Mu + session State, and the callback has to be a Mu function pointer, so it cannot be + driven from Python. A modal input dialog stands in for it. + """ + + def F(event): + (text, ok) = QtWidgets.QInputDialog.getText( + qtutils.sessionWindow(), "", prompt() + ) + if ok and (okWhenEmpty or text != ""): + func(text) + + return F + + +class SourceGroupEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def syncGuiInOut(self): + p = "#RVFileSource.cut.syncGui" + + if commands.propertyExists(p): + return commands.getIntProperty(p)[0] != 0 + + return True + + def reset(self): + self._locked = True + try: + if self.syncGuiInOut(): + commands.setInPoint(commands.frameStart()) + commands.setOutPoint(commands.frameEnd()) + setIntProp("#RVFileSource.cut.in", -MU_INT_MAX) + setIntProp("#RVFileSource.cut.out", MU_INT_MAX) + except Exception: + pass + self._locked = False + self.updateUI() + commands.redraw() + + def updateUI(self): + if self._ui is None: + return + + self._locked = True + + try: + cutIn = commands.getIntProperty("#RVFileSource.cut.in")[0] + cutOut = commands.getIntProperty("#RVFileSource.cut.out")[0] + + self._cutInEdit.setValue(cutIn) + self._cutOutEdit.setValue(cutOut if cutOut != MU_INT_MAX else -MU_INT_MAX) + + self._syncCheckBox.setCheckState( + Qt.CheckState.Checked + if self.syncGuiInOut() + else Qt.CheckState.Unchecked + ) + except Exception: + # The session may have been cleared. + pass + self._locked = False + + def resetSlot(self, checked): + self.reset() + + def syncSlot(self, checked): + if self._locked: + return + + p = "#RVFileSource.cut.syncGui" + + setIntProp(p, 1 if checked else 0) + if checked: + self.updateFromProps() + self.updateUI() + + def toggleSync(self, event): + self.syncSlot(not self.syncGuiInOut()) + + def changedSlot(self, prop): + def F(v): + if not self._locked and v != -MU_INT_MAX: + if v < commands.frameStart(): + return + if v > commands.frameEnd(): + return + + if prop == "in" and v > commands.outPoint(): + return + if prop == "out" and v < commands.inPoint(): + return + + self._locked = True + + setIntProp("#RVFileSource.cut." + prop, v) + + try: + if self.syncGuiInOut() and prop == "in": + commands.setInPoint(v) + if self.syncGuiInOut() and prop == "out": + commands.setOutPoint(v) + except Exception: + pass + self._locked = False + commands.redraw() + + return F + + def finishedSlot(self, prop): + def F(): + v = self._cutInEdit.value() if prop == "in" else self._cutOutEdit.value() + + if v != -MU_INT_MAX: + if v < commands.frameStart(): + v = commands.frameStart() + if v > commands.frameEnd(): + v = commands.frameEnd() + + if prop == "in" and v > commands.outPoint(): + v = commands.outPoint() + if prop == "out" and v < commands.inPoint(): + v = commands.inPoint() + + self._locked = True + + if prop == "in": + self._cutInEdit.setValue(v) + if prop == "out": + self._cutOutEdit.setValue(v) + + setIntProp("#RVFileSource.cut." + prop, v) + + try: + if self.syncGuiInOut() and prop == "in": + commands.setInPoint(v) + if self.syncGuiInOut() and prop == "out": + commands.setOutPoint(v) + except Exception: + pass + self._locked = False + commands.redraw() + + return F + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(self.auxFilePath("source.ui"), m) + + self._cutInEdit = self._ui.findChild(QtWidgets.QSpinBox, "cutInEdit") + self._cutInEdit.setRange(-MU_INT_MAX, MU_INT_MAX) + self._cutInEdit.setSpecialValueText(" ") + + self._cutOutEdit = self._ui.findChild(QtWidgets.QSpinBox, "cutOutEdit") + self._cutOutEdit.setRange(-MU_INT_MAX, MU_INT_MAX) + self._cutOutEdit.setSpecialValueText(" ") + + self._resetButton = self._ui.findChild( + QtWidgets.QPushButton, "resetButton" + ) + self._syncCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "syncCheckBox" + ) + + manager.addEditor("Source", self._ui) + + self._resetButton.clicked.connect(self.resetSlot) + + self._cutInEdit.editingFinished.connect(self.finishedSlot("in")) + self._cutOutEdit.editingFinished.connect(self.finishedSlot("out")) + + self._cutInEdit.valueChanged.connect(self.changedSlot("in")) + self._cutOutEdit.valueChanged.connect(self.changedSlot("out")) + + self._syncCheckBox.clicked.connect(self.syncSlot) + + self.updateUI() + manager.useEditor("Source") + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + node = parts[0] + + if not self._locked and commands.nodeType(node) == "RVFileSource": + self.updateUI() + if self.syncGuiInOut(): + self.updateFromProps() + event.reject() + + def cutInPrompt(self): + v = commands.getIntProperty("#RVFileSource.cut.in")[0] + + if v == -MU_INT_MAX: + return "Set Source In Point:" + return "Set Source In Point (current=%d):" % v + + def cutOutPrompt(self): + v = commands.getIntProperty("#RVFileSource.cut.out")[0] + + if v == MU_INT_MAX: + return "Set Source Out Point:" + return "Set Source Out Point (current=%d):" % v + + def setCutValue(self, prop, text): + setIntProp("#RVFileSource.cut." + prop, int(text)) + commands.redraw() + + def resetCut(self, event): + self.reset() + + def newInPoint(self, event): + p = "#RVFileSource.cut.in" + + if not self._locked and self.syncGuiInOut() and commands.propertyExists(p): + setIntProp(p, commands.inPoint()) + + event.reject() + + def newOutPoint(self, event): + p = "#RVFileSource.cut.out" + + if not self._locked and self.syncGuiInOut() and commands.propertyExists(p): + setIntProp(p, commands.outPoint()) + + event.reject() + + def updateFromProps(self): + self._locked = True + try: + cutIn = commands.getIntProperty("#RVFileSource.cut.in")[0] + cutOut = commands.getIntProperty("#RVFileSource.cut.out")[0] + + cutIn = min(max(cutIn, commands.frameStart()), commands.frameEnd()) + cutOut = min(max(cutOut, commands.frameStart()), commands.frameEnd()) + commands.setInPoint(cutIn) + commands.setOutPoint(cutOut) + except Exception: + pass + self._locked = False + + def activate(self): + if self.syncGuiInOut(): + self.updateFromProps() + + rv.rvtypes.MinorMode.activate(self) + + def syncState(self): + if self.syncGuiInOut(): + return commands.CheckedMenuState + return commands.UncheckedMenuState + + def sourceMenuState(self): + return commands.NeutralMenuState + + def menu(self, setCutInMode, setCutOutMode): + return [ + ( + "Source", + [ + menuItem( + "Set Source Cut In ...", + "", + "source_category", + setCutInMode, + self.sourceMenuState, + ), + menuItem( + "Set Source Cut Out ...", + "", + "source_category", + setCutOutMode, + self.sourceMenuState, + ), + menuItem( + "Clear Source Cut In/Out", + "", + "source_category", + self.resetCut, + self.sourceMenuState, + ), + menuItem( + "Sync GUI With Source Cut In/Out", + "", + "source_category", + self.toggleSync, + self.syncState, + ), + ], + ) + ] + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._cutInEdit = None + self._cutOutEdit = None + self._syncCheckBox = None + self._resetButton = None + self._locked = False + + setCutInMode = startTextEntryMode( + self.cutInPrompt, lambda text: self.setCutValue("in", text) + ) + setCutOutMode = startTextEntryMode( + self.cutOutPrompt, lambda text: self.setCutValue("out", text) + ) + + self.init( + "SourceGroup_edit_mode", + None, + [ + ("new-in-point", self.newInPoint, "Update In Point"), + ("new-out-point", self.newOutPoint, "Update Out Point"), + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + self.menu(setCutInMode, setCutOutMode), + None, + ) + + self._locked = False + + +def createMode(): + return SourceGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/StackGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/StackGroup_edit_mode.py new file mode 100644 index 000000000..2db995e9c --- /dev/null +++ b/src/plugins/rv-packages/session_manager/StackGroup_edit_mode.py @@ -0,0 +1,110 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Stack group edit mode — Python port of StackGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import os +import sys + +import rv.commands as commands +import rv.rvtypes +import rv.runtime + + +def _activateModeEntry(name, on): + """Activate/deactivate a sibling mode through RV's Mu mode manager. + + commands.activateMode() cannot be used: these modes are declared + `load: delay` in PACKAGE, and it returns successfully while leaving an + unloaded mode inactive. The mode manager lazy-loads the entry first, and it + has no Python binding, so it is reached through the Mu bridge. + """ + rv.runtime.eval( + '{ State s = data(); ' + 'mode_manager.ModeManagerMode mm = s.modeManager; ' + 'mm.activateEntry(mm.findModeEntry("%s"), %s); ' + '"ok"; }' % (name, "true" if on else "false"), + ["rvtypes", "commands", "mode_manager"], + ) + + +def _syncWipeMode(on): + """Reconcile the wipes minor mode with this view's ui.wipes flag. + + The wipe mode instance lives on the session State, which Python cannot reach, + and toggleWipe has no Python binding either, so the whole reconciliation runs + in Mu and the flag and the mode state are read together. + + Note on toggleWipe vs wipe.toggle: toggleWipe resets the wipes and turns them + off (sets the ui.wipes flag to 0), while wipe.toggle only makes the mode + inactive, so the wipes are in the same state when this view is returned to. + """ + rv.runtime.eval( + '{ State s = data(); ' + 'let wipe = s.wipe; ' + 'let p = viewNode() + ".ui.wipes"; ' + 'let wipeon = %s && propertyExists(p) && getIntProperty(p).front() == 1; ' + 'if (wipeon) { if (wipe eq nil || !wipe._active) toggleWipe(); } ' + 'else { if (wipe neq nil && wipe._active) wipe.toggle(); } ' + '"ok"; }' % ("true" if on else "false"), + ["rvtypes", "commands", "rvui"], + ) + + +class StackGroupEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def activateUI(self, on): + for mode in ["Composite_edit_mode", "Stack_edit_mode"]: + _activateModeEntry(mode, on) + + _syncWipeMode(on) + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + self.activateUI(True) + + def deactivate(self): + rv.rvtypes.MinorMode.deactivate(self) + self.activateUI(False) + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + # + # If a UI name changes we need to update the tree + # + + if (comp == "ui" and name == "wipes") or ( + comp == "timing" and name == "retimeToOutput" + ): + self.activateUI(True) + commands.redraw() + + event.reject() + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self.init( + "StackGroup_edit_mode", + None, + [("graph-state-change", self.propertyChanged, "Maybe update session UI")], + [("Stack", [])], + None, + ) + + +def createMode(): + return StackGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/Stack_edit_mode.py b/src/plugins/rv-packages/session_manager/Stack_edit_mode.py new file mode 100644 index 000000000..49641b2a5 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/Stack_edit_mode.py @@ -0,0 +1,419 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Stack edit mode — Python port of Stack_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import functools +import os +import sys + +import rv.commands as commands +import rv.extra_commands as extra_commands +import rv.qtutils as qtutils +import rv.rvtypes + +from PySide6 import QtCore, QtWidgets +from PySide6.QtCore import Qt +from PySide6.QtUiTools import QUiLoader + +from session_manager import checkStateIsChecked, menuItem, setFloatProp, setIntProp, setStringProp + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +class StackEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def updateUI(self): + vnode = commands.viewNode() + vnodeExists = vnode is not None + + if self._ui is None or not vnodeExists: + return + + self._uiInFlux = True + + try: + a = commands.getIntProperty("#RVStack.mode.alignStartFrames")[0] + st = commands.getIntProperty("#RVStack.mode.strictFrameRanges")[0] + u = commands.getIntProperty("#RVStack.mode.useCutInfo")[0] + c = commands.getStringProperty("#RVStack.output.chosenAudioInput")[0] + asize = commands.getIntProperty("#RVStack.output.autoSize")[0] + size = commands.getIntProperty("#RVStack.output.size") + fps = commands.getFloatProperty("#RVStack.output.fps")[0] + isize = commands.getIntProperty("#RVStack.output.interactiveSize")[0] + + self._alignCheckBox.setCheckState(Qt.Unchecked if a == 0 else Qt.Checked) + self._strictRangesCheckBox.setCheckState( + Qt.Unchecked if st == 0 else Qt.Checked + ) + self._useCutInfoCheckBox.setCheckState( + Qt.Unchecked if u == 0 else Qt.Checked + ) + self._autoSizeCheckBox.setCheckState( + Qt.Unchecked if asize == 0 else Qt.Checked + ) + self._interactiveSizeCheckBox.setCheckState( + Qt.Unchecked if isize == 0 else Qt.Checked + ) + + self._chosenAudioInputCombo.clear() + self._chosenAudioInputCombo.addItem("All Inputs Mixed", ".all.") + self._chosenAudioInputCombo.addItem("First Input Only", ".first.") + self._chosenAudioInputCombo.addItem("First Visible Input", ".topmost.") + + chosenIndex = 0 + inputs = commands.nodeConnections(commands.viewNode(), False)[0] + + if c == ".first.": + chosenIndex = 1 + if c == ".topmost.": + chosenIndex = 2 + + for i, inputNode in enumerate(inputs): + self._chosenAudioInputCombo.addItem( + extra_commands.uiName(inputNode), inputNode + ) + # + # i+3 because we used the first three slots for "play + # everything" and "play first only" and "play first visible" + # + if inputNode == c: + chosenIndex = i + 3 + + self._chosenAudioInputCombo.setCurrentIndex(chosenIndex) + + self._outputWidthEdit.setEnabled(asize == 0) + self._outputHeightEdit.setEnabled(asize == 0) + + self._outputFPSEdit.setText("%g" % fps) + self._outputWidthEdit.setText("%d" % size[0]) + self._outputHeightEdit.setText("%d" % size[-1]) + + retimeProp = "#View.timing.retimeInputs" + + if commands.propertyExists(retimeProp): + self._retimeCheckBox.setCheckState( + Qt.Checked + if commands.getIntProperty(retimeProp)[0] == 1 + else Qt.Unchecked + ) + except Exception: + pass + + commands.redraw() + self._uiInFlux = False + + def updateUIEvent(self, event): + event.reject() + self.updateUI() + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + if comp == "mode" or comp == "output": + if name in ( + "alignStartFrames", + "strictFrameRanges", + "useCutInfo", + "chosenAudioInput", + "size", + "autoSize", + "fps", + "interactiveSize", + ): + if self._ui is not None: + self.updateUI() + + event.reject() + + def checkBoxSlot(self, state, name): + v = commands.getIntProperty(name)[0] + newV = 1 if checkStateIsChecked(state) else 0 + + if v != newV: + setIntProp(name, newV) + + def updateMenu(self): + self.setMenu(self.menu()) + + def setChosenAudioInput(self, index): + if self._uiInFlux: + return + + currentName = commands.getStringProperty("#RVStack.output.chosenAudioInput")[0] + name = ".all." + + if index >= 0 and index < self._chosenAudioInputCombo.count(): + data = self._chosenAudioInputCombo.itemData(index, Qt.UserRole) + name = "" if data is None else str(data) + + if name != currentName: + setStringProp("#RVStack.output.chosenAudioInput", name) + commands.redraw() + + def fpsChanged(self): + newFPS = float(self._outputFPSEdit.text()) + + try: + setFloatProp("#RVStack.output.fps", newFPS) + commands.setFPS(newFPS) + except Exception: + pass + + commands.redraw() + + def widthChanged(self): + val = float(self._outputWidthEdit.text()) + prop = commands.getIntProperty("#RVStack.output.size") + + commands.setIntProperty("#RVStack.output.size", [int(val), prop[-1]]) + commands.redraw() + + def heightChanged(self): + val = float(self._outputHeightEdit.text()) + prop = commands.getIntProperty("#RVStack.output.size") + + commands.setIntProperty("#RVStack.output.size", [prop[0], int(val)]) + commands.redraw() + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(manager.auxFilePath("stack.ui"), m) + self._alignCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "alignCheckBox" + ) + self._strictRangesCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "strictRangesCheckBox" + ) + self._useCutInfoCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "useCutInfoCheckBox" + ) + self._retimeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "retimeInputsCheckBox" + ) + self._autoSizeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "autoSizeCheckBox" + ) + self._chosenAudioInputCombo = self._ui.findChild( + QtWidgets.QComboBox, "chosenAudioInputCombo" + ) + self._outputFPSEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputFPSEdit" + ) + self._outputWidthEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputWidthEdit" + ) + self._outputHeightEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputHeightEdit" + ) + self._interactiveSizeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "interactiveResizeCheckBox" + ) + + manager.addEditor("Stack", self._ui) + + self._alignCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVStack.mode.alignStartFrames" + ) + ) + self._strictRangesCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVStack.mode.strictFrameRanges" + ) + ) + self._useCutInfoCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVStack.mode.useCutInfo" + ) + ) + self._autoSizeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVStack.output.autoSize" + ) + ) + self._retimeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#View.timing.retimeInputs" + ) + ) + self._interactiveSizeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVStack.output.interactiveSize" + ) + ) + + self._chosenAudioInputCombo.currentIndexChanged.connect( + self.setChosenAudioInput + ) + self._outputFPSEdit.editingFinished.connect(self.fpsChanged) + self._outputWidthEdit.editingFinished.connect(self.widthChanged) + self._outputHeightEdit.editingFinished.connect(self.heightChanged) + + self.updateUI() + manager.useEditor("Stack") + + event.reject() + + def alignStartFrames(self, event): + p = "#RVStack.mode.alignStartFrames" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def strictFrameRanges(self, event): + p = "#RVStack.mode.strictFrameRanges" + s = commands.getIntProperty(p)[0] + setIntProp(p, 0 if s != 0 else 1) + + def useCutInfo(self, event): + p = "#RVStack.mode.useCutInfo" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def stateFunc(self, name): + def F(): + p = commands.getIntProperty("#RVStack.mode.%s" % name)[0] + return commands.UncheckedMenuState if p == 0 else commands.CheckedMenuState + + return F + + def retimeState(self): + p = commands.getIntProperty("#View.timing.retimeInputs")[0] + return commands.UncheckedMenuState if p == 0 else commands.CheckedMenuState + + def autoRetimeInputs(self, event): + p = "#View.timing.retimeInputs" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def menu(self): + n = commands.viewNode() + t = commands.nodeType(n) + name = "Layout" if t == "RVLayoutGroup" else "Stack" + + return [ + ( + name, + [ + ("_", None), + menuItem( + "Align Start Frames", + "", + "viewmode_category", + self.alignStartFrames, + self.stateFunc("alignStartFrames"), + ), + menuItem( + "Use Source Cut Info", + "", + "viewmode_category", + self.useCutInfo, + self.stateFunc("useCutInfo"), + ), + menuItem( + "Automatically Retime Inputs", + "", + "viewmode_category", + self.autoRetimeInputs, + self.retimeState, + ), + menuItem( + "Use Strict Frame Ranges", + "", + "viewmode_category", + self.strictFrameRanges, + self.stateFunc("strictFrameRanges"), + ), + ], + ) + ] + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._alignCheckBox = None + self._strictRangesCheckBox = None + self._useCutInfoCheckBox = None + self._retimeCheckBox = None + self._autoSizeCheckBox = None + self._interactiveSizeCheckBox = None + self._chosenAudioInputCombo = None + self._outputFPSEdit = None + self._outputWidthEdit = None + self._outputHeightEdit = None + self._uiInFlux = False + + self.init( + "Stack_edit_mode", + None, + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("range-changed", self.updateUIEvent, "Update UI"), + ("image-structure-change", self.updateUIEvent, "Update UI"), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + None, + "z", + ) + + +def createMode(): + return StackEditMode() diff --git a/src/plugins/rv-packages/session_manager/SwitchGroup_edit_mode.py b/src/plugins/rv-packages/session_manager/SwitchGroup_edit_mode.py new file mode 100644 index 000000000..cacaccaca --- /dev/null +++ b/src/plugins/rv-packages/session_manager/SwitchGroup_edit_mode.py @@ -0,0 +1,52 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Switch group edit mode — Python port of SwitchGroup_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import rv.rvtypes +import rv.runtime + + +def _activateModeEntry(name, on): + """Activate/deactivate a sibling mode through RV's Mu mode manager. + + commands.activateMode() cannot be used: these modes are declared + `load: delay` in PACKAGE, and it returns successfully while leaving an + unloaded mode inactive. The mode manager lazy-loads the entry first, and it + has no Python binding, so it is reached through the Mu bridge. + """ + rv.runtime.eval( + '{ State s = data(); ' + 'mode_manager.ModeManagerMode mm = s.modeManager; ' + 'mm.activateEntry(mm.findModeEntry("%s"), %s); ' + '"ok"; }' % (name, "true" if on else "false"), + ["rvtypes", "commands", "mode_manager"], + ) + + +class SwitchGroupEditMode(rv.rvtypes.MinorMode): + def activateUI(self, on): + for mode in ["Switch_edit_mode"]: + _activateModeEntry(mode, on) + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + self.activateUI(True) + + def deactivate(self): + rv.rvtypes.MinorMode.deactivate(self) + self.activateUI(False) + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self.init("SwitchGroup_edit_mode", None, None, None, None) + + +def createMode(): + return SwitchGroupEditMode() diff --git a/src/plugins/rv-packages/session_manager/Switch_edit_mode.py b/src/plugins/rv-packages/session_manager/Switch_edit_mode.py new file mode 100644 index 000000000..e9d0340fb --- /dev/null +++ b/src/plugins/rv-packages/session_manager/Switch_edit_mode.py @@ -0,0 +1,309 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Switch edit mode — Python port of Switch_edit_mode.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import functools +import os +import sys + +import rv.commands as commands +import rv.extra_commands as extra_commands +import rv.qtutils as qtutils +import rv.rvtypes + +from PySide6 import QtCore, QtWidgets +from PySide6.QtCore import Qt +from PySide6.QtUiTools import QUiLoader + +from session_manager import checkStateIsChecked, menuItem, setIntProp, setStringProp + + +def _sessionManagerMode(): + """The session manager mode, or None when it is not loaded. + + The session State field the Mu modes read has no Python binding, so the mode is + reached through the sibling module's own accessor. Callers must tolerate None: + there is no editor panel to populate unless the session manager is loaded. + """ + try: + import session_manager + + return session_manager.theMode() + except Exception: + return None + + +def _loadUIFile(path, parent): + """Build a widget from a Qt Designer file; loadUIFile has no Python binding.""" + loader = QUiLoader() + uiFile = QtCore.QFile(path) + uiFile.open(QtCore.QIODevice.ReadOnly) + + try: + return loader.load(uiFile, parent) + finally: + uiFile.close() + + +class SwitchEditMode(rv.rvtypes.MinorMode): + def auxFilePath(self, name): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), name + ) + + def updateUI(self): + vnode = commands.viewNode() + vnodeExists = vnode is not None + + if self._ui is None or not vnodeExists: + return + + self._uiInFlux = True + + try: + a = commands.getIntProperty("#RVSwitch.mode.alignStartFrames")[0] + u = commands.getIntProperty("#RVSwitch.mode.useCutInfo")[0] + c = commands.getStringProperty("#RVSwitch.output.input")[0] + asize = commands.getIntProperty("#RVSwitch.output.autoSize")[0] + size = commands.getIntProperty("#RVSwitch.output.size") + + self._alignCheckBox.setCheckState(Qt.Unchecked if a == 0 else Qt.Checked) + self._useCutInfoCheckBox.setCheckState( + Qt.Unchecked if u == 0 else Qt.Checked + ) + self._autoSizeCheckBox.setCheckState( + Qt.Unchecked if asize == 0 else Qt.Checked + ) + + self._selectedInputCombo.clear() + + selectedIndex = 0 + inputs = commands.nodeConnections(commands.viewNode(), False)[0] + + for i, inputNode in enumerate(inputs): + self._selectedInputCombo.addItem( + extra_commands.uiName(inputNode), inputNode + ) + if inputNode == c: + selectedIndex = i + + self._selectedInputCombo.setCurrentIndex(selectedIndex) + + self._outputWidthEdit.setEnabled(asize == 0) + self._outputHeightEdit.setEnabled(asize == 0) + + self._outputWidthEdit.setText("%d" % size[0]) + self._outputHeightEdit.setText("%d" % size[-1]) + except Exception: + pass + + commands.redraw() + self._uiInFlux = False + + def updateUIEvent(self, event): + event.reject() + self.updateUI() + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + comp = parts[1] + name = parts[2] + + if comp == "mode" or comp == "output": + if name in ( + "alignStartFrames", + "useCutInfo", + "input", + "size", + "autoSize", + ): + if self._ui is not None: + self.updateUI() + + event.reject() + + def checkBoxSlot(self, state, name): + setIntProp(name, 1 if checkStateIsChecked(state) else 0) + + def updateMenu(self): + self.setMenu(self.menu()) + + def setSelectedInput(self, index): + if self._uiInFlux: + return + + currentName = commands.getStringProperty("#RVSwitch.output.input")[0] + name = "" + + if index >= 0 and index < self._selectedInputCombo.count(): + data = self._selectedInputCombo.itemData(index, Qt.UserRole) + name = "" if data is None else str(data) + + if name != currentName: + setStringProp("#RVSwitch.output.input", name) + commands.redraw() + + def widthChanged(self): + val = float(self._outputWidthEdit.text()) + prop = commands.getIntProperty("#RVSwitch.output.size") + + commands.setIntProperty("#RVSwitch.output.size", [int(val), prop[-1]]) + commands.redraw() + + def heightChanged(self): + val = float(self._outputHeightEdit.text()) + prop = commands.getIntProperty("#RVSwitch.output.size") + + commands.setIntProperty("#RVSwitch.output.size", [prop[0], int(val)]) + commands.redraw() + + def loadUI(self, event): + manager = _sessionManagerMode() + + if manager is not None: + # + # The .ui tree below is parented to the session window, so the wrapper for it + # has to outlive them: dropping the last Python reference to a wrapper obtained + # from wrapInstance() takes the widgets parented to it down with it, and the + # panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + if self._ui is None: + self._ui = _loadUIFile(manager.auxFilePath("switch.ui"), m) + self._alignCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "alignCheckBox" + ) + self._useCutInfoCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "useCutInfoCheckBox" + ) + self._autoSizeCheckBox = self._ui.findChild( + QtWidgets.QCheckBox, "autoSizeCheckBox" + ) + self._selectedInputCombo = self._ui.findChild( + QtWidgets.QComboBox, "selectedInputCombo" + ) + self._outputWidthEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputWidthEdit" + ) + self._outputHeightEdit = self._ui.findChild( + QtWidgets.QLineEdit, "outputHeightEdit" + ) + + manager.addEditor("Switch", self._ui) + + self._alignCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSwitch.mode.alignStartFrames" + ) + ) + self._useCutInfoCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSwitch.mode.useCutInfo" + ) + ) + self._autoSizeCheckBox.stateChanged.connect( + functools.partial( + self.checkBoxSlot, name="#RVSwitch.output.autoSize" + ) + ) + + self._selectedInputCombo.currentIndexChanged.connect( + self.setSelectedInput + ) + self._outputWidthEdit.editingFinished.connect(self.widthChanged) + self._outputHeightEdit.editingFinished.connect(self.heightChanged) + + self.updateUI() + manager.useEditor("Switch") + + event.reject() + + def alignStartFrames(self, event): + p = "#RVSwitch.mode.alignStartFrames" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def useCutInfo(self, event): + p = "#RVSwitch.mode.useCutInfo" + a = commands.getIntProperty(p)[0] + setIntProp(p, 0 if a != 0 else 1) + + def stateFunc(self, name): + def F(): + p = commands.getIntProperty("#RVSwitch.mode.%s" % name)[0] + return commands.UncheckedMenuState if p == 0 else commands.CheckedMenuState + + return F + + def retimeState(self): + p = commands.getIntProperty("#View.timing.retimeInputs")[0] + return commands.UncheckedMenuState if p == 0 else commands.CheckedMenuState + + def menu(self): + return [ + ( + "Switch", + [ + menuItem( + "Align Start Frames", + "", + "viewmode_category", + self.alignStartFrames, + self.stateFunc("alignStartFrames"), + ), + menuItem( + "Use Source Cut Info", + "", + "viewmode_category", + self.useCutInfo, + self.stateFunc("useCutInfo"), + ), + ], + ) + ] + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._ui = None + self._mainWindow = None + self._alignCheckBox = None + self._useCutInfoCheckBox = None + self._autoSizeCheckBox = None + self._selectedInputCombo = None + self._outputWidthEdit = None + self._outputHeightEdit = None + self._uiInFlux = False + + self.init( + "Switch_edit_mode", + None, + [ + ( + "session-manager-load-ui", + self.loadUI, + "Load UI into Session Manager", + ), + ("range-changed", self.updateUIEvent, "Update UI"), + ("image-structure-change", self.updateUIEvent, "Update UI"), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ], + self.menu(), + "z0", + ) + + +def createMode(): + return SwitchEditMode() diff --git a/src/plugins/rv-packages/session_manager/session_manager.mu.in b/src/plugins/rv-packages/session_manager/session_manager.mu.in index bd3061187..4553a7a79 100755 --- a/src/plugins/rv-packages/session_manager/session_manager.mu.in +++ b/src/plugins/rv-packages/session_manager/session_manager.mu.in @@ -621,13 +621,10 @@ class: ThumbnailWidget : QLabel method: setFallback (void; QPixmap pixmap) { setPixmap(pixmap); } - method: load (void; QImage thumbnailImage) + method: load (void; string path) { - let pixmap = QPixmap.fromImage(thumbnailImage, Qt.AutoColor); - if (!pixmap.isNull()) - { - setPixmap(pixmap); - } + let pixmap = QPixmap.fromImage(QImage(path, ""), Qt.AutoColor); + if (!pixmap.isNull()) setPixmap(pixmap); } } @@ -663,8 +660,9 @@ class: FilmstripWidget : QLabel method: isLoaded (bool;) { _loaded; } - method: load (void; QImage filmstripImage) + method: load (void; string path) { + let filmstripImage = QImage(path, ""); if (!filmstripImage.isNull()) { _strip = filmstripImage; @@ -700,9 +698,9 @@ class: SourcePreviewWidget : QWidget _filmstrip.hide(); } - method: setFallback (void; QPixmap pixmap) { _thumbnail.setFallback(pixmap); } - method: loadStrip (void; QImage filmstripImage) { _filmstrip.load(filmstripImage); } - method: loadThumbnail (void; QImage thumbnailImage) { _thumbnail.load(thumbnailImage); } + method: setFallback (void; QPixmap pixmap) { _thumbnail.setFallback(pixmap); } + method: loadStrip (void; string path) { _filmstrip.load(path); } + method: loadThumbnail (void; string path) { _thumbnail.load(path); } method: event (bool; QEvent event) { @@ -1106,7 +1104,6 @@ class: SessionManagerMode : MinorMode QIcon _channelIcon; QIcon _videoIcon; QIcon _fallbackSourceIcon; - (string, QImage)[] _previewsCache; bool _inputOrderLock; bool _disableUpdates; bool _previewsEnabled; @@ -1816,37 +1813,6 @@ class: SessionManagerMode : MinorMode item; } - method: cachedPreview (QImage; string pathToCache) - { - for_each (preview; _previewsCache) - { - let (previewPath, previewImage) = (preview._0, preview._1); - - if (previewPath == pathToCache) - { - return previewImage; - } - } - - let imageToCache = QImage(pathToCache, nil); - _previewsCache.push_back((pathToCache, imageToCache)); - - return imageToCache; - } - - method: dropPreviewFromCache (void; string pathToDrop) - { - for (int i = 0; i < _previewsCache.size(); i++) - { - let previewPath = _previewsCache[i]._0; - if (previewPath == pathToDrop) - { - _previewsCache.erase(i, 1); - return; - } - } - } - method: makeSourceRowWidget (QWidget; string node) { string sourceNode = nil; @@ -1877,15 +1843,11 @@ class: SessionManagerMode : MinorMode let thumbnailPath = sendInternalEvent("session-manager-get-thumbnail-path", sourceNode); if (thumbnailPath != "" && io.path.exists(thumbnailPath)) { - let thumbnailImage = cachedPreview(thumbnailPath); - preview.loadThumbnail(thumbnailImage); + preview.loadThumbnail(thumbnailPath); let filmstripPath = sendInternalEvent("session-manager-get-filmstrip-path", sourceNode); if (filmstripPath != "" && io.path.exists(filmstripPath)) - { - let filmstripImage = cachedPreview(filmstripPath); - preview.loadStrip(filmstripImage); - } + preview.loadStrip(filmstripPath); } let mediaPropertyPath = sourceNode + ".media.movie"; @@ -2234,12 +2196,6 @@ class: SessionManagerMode : MinorMode if (_srcNodeKeys[i] == sourceNode) { node = _grpNodeValues[i]; break; } } if (node eq nil) return; - - let thumbnailPath = sendInternalEvent("session-manager-get-thumbnail-path", sourceNode); - dropPreviewFromCache(thumbnailPath); - - let filmstripPath = sendInternalEvent("session-manager-get-filmstrip-path", sourceNode); - dropPreviewFromCache(filmstripPath); let item = itemOfNode(_viewModel, node); if (item neq nil) @@ -2503,6 +2459,28 @@ class: SessionManagerMode : MinorMode return nodes; } + // + // Answer "session-manager-selected-nodes" with one node name per line. + // + // Other packages used to reach the selection by requiring this module and + // calling theMode().selectedNodes(). A Mu require cannot resolve the Python + // port that replaces this file, so the cross-package API is served as an + // internal event instead, and both implementations answer it identically. + // + method: selectedNodesEvent (void; Event event) + { + let nodes = selectedNodes(); + string content = ""; + + for_index (i; nodes) + { + if (i > 0) content += "\n"; + content += nodes[i]; + } + + event.setReturnContent(content); + } + method: selectedItems (QStandardItem[]; ) { let indices = _viewTreeView.selectionModel().selectedIndexes(); @@ -3185,7 +3163,8 @@ class: SessionManagerMode : MinorMode ("before-session-deletion", enterQuittingState, "Store quitting before session goes away"), ("view-edit-mode-activated", viewEditModeActivated, "Per-view edit mode activated, load UI"), ("event-category-state-changed", onCategoryStateChanged, "Category state changed"), - ("session-manager-preview-available", updateNodePreviewEvent, "Update preview widget for completed thumbnail") + ("session-manager-preview-available", updateNodePreviewEvent, "Update preview widget for completed thumbnail"), + ("session-manager-selected-nodes", selectedNodesEvent, "Report the tree selection to other packages") ], nil, nil); @@ -3321,8 +3300,6 @@ class: SessionManagerMode : MinorMode _unknownTypeIcon = auxIcon("new_48x48.png", true); _fallbackSourceIcon = QIcon(auxFilePath("fallback_thumbnail.png")); - _previewsCache = (string, QImage)[](); - _addButton.setDefaultAction(addAction); _deleteButton.setDefaultAction(deleteAction); _editViewInfoButton.setDefaultAction(editInfoAction); diff --git a/src/plugins/rv-packages/session_manager/session_manager.py b/src/plugins/rv-packages/session_manager/session_manager.py new file mode 100644 index 000000000..8bca04e70 --- /dev/null +++ b/src/plugins/rv-packages/session_manager/session_manager.py @@ -0,0 +1,3076 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""Session Manager mode — Python port of session_manager.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side during the migration, and so each Mu method maps to one +Python method for coverage tracking. +""" +import os +import re +import sys + +import rv.commands as commands +import rv.extra_commands as extra_commands +import rv.qtutils as qtutils +import rv.rvtypes + +from PySide6 import QtCore, QtGui, QtWidgets +from PySide6.QtCore import Qt +from PySide6.QtUiTools import QUiLoader + +NotASubComponent = 0 +MediaSubComponent = 1 +ViewSubComponent = 2 +LayerSubComponent = 3 +ChannelSubComponent = 4 + +FILMSTRIP_FRAME_WIDTH = 240 +SOURCE_PREVIEW_WIDTH = 80 +SOURCE_PREVIEW_HEIGHT = 45 +SOURCE_ROW_HEIGHT = 55 +SOURCE_ROW_MARGIN = 8 +SOURCE_ROW_SPACING = 5 +SOURCE_TEXT_SPACING = 3 +TREE_VIEW_INDENTATION = 10 + +# Mu's int.max, used as the "no sort key recorded" marker. +MU_INT_MAX = 2**31 - 1 +UNDEFINED_SORT_KEY = MU_INT_MAX - 100 + + +def itemNode(item): + """The node name an item stands for, or "" for structural rows.""" + if item is None: + return "" + d = item.data(Qt.UserRole + 2) + return "" if d is None else str(d) + + +def itemSubComponentTypeForName(n): + return { + "view": ViewSubComponent, + "layer": LayerSubComponent, + "channel": ChannelSubComponent, + }.get(n, NotASubComponent) + + +def componentMatch(n, c): + return itemSubComponentTypeForName(n) == c + + +def itemSubComponentStringData(item, n): + if item is None: + return "" + d = item.data(Qt.UserRole + n) + return "" if d is None else str(d) + + +def itemSubComponentMedia(item): + return itemSubComponentStringData(item, 7) + + +def itemSubComponentHash(item): + return itemSubComponentStringData(item, 6) + + +def itemSubComponentValue(item): + return itemSubComponentStringData(item, 5) + + +def itemParentNode(item): + return itemSubComponentStringData(item, 1) + + +def itemSubComponentType(item): + if item is None: + return NotASubComponent + d = item.data(Qt.UserRole + 4) + if d is None: + return NotASubComponent + try: + return int(d) + except (TypeError, ValueError): + return NotASubComponent + + +def itemIsSubComponent(item): + return itemSubComponentType(item) != NotASubComponent + + +def includes(array, item): + return any(a.row() == item.row() for a in array) + + +def contents_equal(a, b): + """Mu's contentsEqual, which has no Python counterpart.""" + return list(a) == list(b) + + +def _compare(a, b): + """Mu's compare() for strings: negative, zero or positive.""" + return (a > b) - (a < b) + + +def _cprop(name, propType): + """Mu's extra_commands.cprop.""" + if not commands.propertyExists(name): + commands.newProperty(name, propType, 1) + + +def _as_list(value): + return list(value) if isinstance(value, (list, tuple)) else [value] + + +# +# Mu has six set() overloads (float/int/string, scalar and array) and picks one +# by argument type. Only a single overload is reachable through the Python +# binding of extra_commands.set, so the property type is named at the call site +# instead. Which of these three a call uses matches the overload Mu resolved. +# + + +def setFloatProp(name, value): + _cprop(name, commands.FloatType) + commands.setFloatProperty(name, _as_list(value), True) + + +def setIntProp(name, value): + _cprop(name, commands.IntType) + commands.setIntProperty(name, _as_list(value), True) + + +def setStringProp(name, value): + _cprop(name, commands.StringType) + commands.setStringProperty(name, _as_list(value), True) + + +def checkStateIsChecked(state): + """Whether a QCheckBox.stateChanged payload means Checked. + + Mu compares the signal argument against Qt.Checked directly, which cannot be + done here: stateChanged carries a plain int, and PySide6 6.5's Qt.CheckState is + an enum.Enum rather than an IntEnum, so `2 == Qt.Checked` is False and + int(Qt.Checked) raises TypeError. Comparing through .value keeps the Mu answer, + and reading .value off the argument first also accepts a real CheckState in case + a caller (or a later Qt) hands one over. + """ + return getattr(state, "value", state) == Qt.Checked.value + + +def menuItem(label, eventPattern, category, func, stateFunc): + """Mu's app_utils.menuItem, which the Python menu API has no counterpart for. + + A Python mode's menu entry is a plain (label, func, key, stateFunc) tuple with no + notion of an event category, so the gate app_utils.menuItem wraps around both + callables is reproduced here: while the category is disabled (live review filters + categories off), the item draws disabled and activating it reports + category-event-blocked instead of running func. + + Every session_manager menuItem call passes an empty eventPattern, so the bind and + the derived key accelerator Mu's version would add are both no-ops; the key slot is + None for that reason rather than as a simplification. + """ + assert eventPattern == "", "menuItem() shim does not implement event binding" + + def compositeFunc(event): + if not commands.isEventCategoryEnabled(category): + commands.sendInternalEvent("category-event-blocked", category) + else: + func(event) + + def compositeStateFunc(): + if not commands.isEventCategoryEnabled(category): + return commands.DisabledMenuState + return stateFunc() + + return (label, compositeFunc, None, compositeStateFunc) + + +def sourceNodeOfGroup(group): + for node in commands.nodesInGroup(group): + if commands.nodeType(node) in ("RVFileSource", "RVImageSource"): + return node + return None + + +def hashedSubComponentOf(media, view, layer): + """Mu's hashedSubComponent(string, string, string). + + Mu distinguishes nil (absent) from "" (present but empty) here, and encodes the + empty-but-present case as "@."; Python uses None for nil. + """ + v = "@." if view is not None and view == "" else view + l = "@." if layer is not None and layer == "" else layer + + if v is None and l is None: + return "%s!~!~" % media + if v is None: + return "%s!~%s!~" % (media, l) + if l is None: + return "%s!~!~%s" % (media, v) + return "%s!~%s!~%s" % (media, l, v) + + +def hashedSubComponent(item): + """Mu's hashedSubComponent(QStandardItem) overload.""" + value = itemSubComponentValue(item) + subType = itemSubComponentType(item) + parent = item.parent() + pvalue = itemSubComponentValue(parent) + + if subType == MediaSubComponent: + return hashedSubComponentOf(value, None, None) + + if subType == LayerSubComponent: + grandParent = parent.parent() if parent is not None else None + psubType = itemSubComponentType(parent) + if psubType == ViewSubComponent: + arg0 = itemSubComponentValue(grandParent) + arg1 = pvalue + else: + arg0 = pvalue + arg1 = None + return hashedSubComponentOf(arg0, arg1, value) + + if subType == ViewSubComponent: + return hashedSubComponentOf(pvalue, value, None) + + return "" + + +def isSubComponentExpanded(node, item): + propName = "%s.sm_state.expandedSubState" % node + key = hashedSubComponent(item) + if commands.propertyExists(propName): + return key in commands.getStringProperty(propName) + return False + + +def setSubComponentExpanded(node, item, expanded): + propName = "%s.sm_state.expandedSubState" % node + key = hashedSubComponent(item) + + if commands.propertyExists(propName): + p = list(commands.getStringProperty(propName)) + hasit = key in p + if hasit and not expanded: + setStringProp(propName, [x for x in p if x != key]) + elif not hasit and expanded: + p.append(key) + setStringProp(propName, p) + else: + setStringProp(propName, [key]) + + +def isExpandedInParent(node, parent): + propName = "%s.sm_state.expandState" % node + if commands.propertyExists(propName): + return parent in commands.getStringProperty(propName) + return False + + +def setExpandedInParent(node, parent, expanded): + propName = "%s.sm_state.expandState" % node + + if commands.propertyExists(propName): + p = list(commands.getStringProperty(propName)) + hasNode = parent in p + if hasNode and not expanded: + setStringProp(propName, [x for x in p if x != parent]) + elif not hasNode and expanded: + p.append(parent) + setStringProp(propName, p) + else: + setStringProp(propName, parent) + + +def setToolTipProp(node, toolTip): + setStringProp("%s.sm_state.toolTip" % node, toolTip) + + +def toolTipFromProp(node): + propName = "%s.sm_state.toolTip" % node + if commands.propertyExists(propName): + try: + return commands.getStringProperty(propName)[0] + except Exception: + pass + return None + + +def sortKeyInParent(node, parent): + propNameParent = "%s.sm_state.sortKeyParent" % node + propNameKey = "%s.sm_state.sortKey" % node + + if commands.propertyExists(propNameParent) and commands.propertyExists(propNameKey): + try: + p = list(commands.getStringProperty(propNameParent)) + keys = list(commands.getIntProperty(propNameKey)) + i = p.index(parent) if parent in p else -1 + if i == -1 or len(keys) != len(p): + return UNDEFINED_SORT_KEY + return keys[i] + except Exception: + pass + + return UNDEFINED_SORT_KEY + + +def setSortKeyInParent(node, parent, value): + propNameParent = "%s.sm_state.sortKeyParent" % node + propNameKey = "%s.sm_state.sortKey" % node + + if commands.propertyExists(propNameParent) and commands.propertyExists(propNameKey): + try: + p = list(commands.getStringProperty(propNameParent)) + keys = list(commands.getIntProperty(propNameKey)) + i = p.index(parent) if parent in p else -1 + + if len(p) == len(keys): + if i == -1: + p.append(parent) + keys.append(value) + setStringProp(propNameParent, p) + setIntProp(propNameKey, keys) + else: + keys[i] = value + setIntProp(propNameKey, keys) + return + except Exception: + pass + + setStringProp(propNameParent, parent) + setIntProp(propNameKey, value) + + +def nodeFromIndex(index, model): + return itemNode(model.itemFromIndex(index)) + + +def nodeInputs(node): + return commands.nodeConnections(node, False)[0] + + +def addRow(item, children): + row = item.rowCount() + for count, child in enumerate(children): + item.setChild(row, count, child) + + +def setInputs(node, inputs): + """Set a node's inputs, reporting rejected ones the way the Mu mode does.""" + msg = commands.testNodeInputs(node, inputs) + + if msg is not None: + commands.alertPanel( + False, + commands.ErrorAlert, + "Some inputs are not allowed here", + msg, + "Ok", + None, + None, + ) + else: + commands.setNodeInputs(node, inputs) + + return msg is None + + +def removeInput(node, inputNode): + if node != "": + ins = commands.nodeConnections(node)[0] + return setInputs(node, [n for n in ins if n != inputNode]) + return True + + +def hasInput(node, inputNode): + if node is None or node == "": + return True + return inputNode in commands.nodeConnections(node)[0] + + +def addInput(node, inputNode): + if commands.nodeExists(node): + newInputs = list(commands.nodeConnections(node)[0]) + newInputs.append(inputNode) + return setInputs(node, newInputs) + return True + + +def mapItems(model, F, root=None): + """Every item under `root` (or the whole model) for which F(item) is true. + + Mu's map() accumulates into a cons list and visits an item's children before + prepending the item itself, so a matching parent ends up ahead of its matching + children and siblings come out in reverse order. Callers depend on that: both + itemOfNode() and selectViewableNode() take the head, which is the node's own row + rather than one of its sub-component rows. Appending instead puts a sub-component + first, and scrolling to it expands the node row, which writes an + sm_state.expandState the Mu implementation never writes. + """ + + def mapOverItem(item, acc): + for i in range(item.rowCount()): + acc = mapOverItem(item.child(i, 0), acc) + if itemNode(item) != "" and F(item): + return [item] + acc + return acc + + result = [] + if root is None: + for i in range(model.rowCount(QtCore.QModelIndex())): + result = mapOverItem(model.item(i, 0), result) + else: + result = mapOverItem(root, result) + return result + + +def itemOfNode(model, node): + items = mapItems(model, lambda i: itemNode(i) == node and not itemIsSubComponent(i)) + return items[0] if items else None + + +def subComponentItemsOfNode(model, node): + def match(i): + subType = itemSubComponentType(i) + return ( + itemNode(i) == node + and subType != NotASubComponent + and subType != MediaSubComponent + and i.index().column() == 0 + ) + + return mapItems(model, match) + + +def assignSortOrder(root): + if root is None: + return + try: + rootNode = itemNode(root) + index = 0 + for i in range(root.rowCount()): + item = root.child(i, 0) + if item is not None: + setSortKeyInParent(itemNode(item), rootNode, index) + index += 1 + except Exception as exc: + print("CAUGHT %s\n" % exc) + + +def resizeColumns(treeView, model): + for i in range(model.columnCount(QtCore.QModelIndex())): + treeView.resizeColumnToContents(i) + + +def isImageRequestPropEqual(name, array): + return contents_equal(commands.getStringProperty("#RVSource.request." + name), array) + + +def setImageRequestProp(name, array): + pname = "#RVSource.request." + name + if not contents_equal(commands.getStringProperty(pname), array): + setStringProp(pname, array) + commands.reload() + + +def setImageRequest(value, toggle=True): + pname = "imageComponent" + + if toggle and isImageRequestPropEqual(pname, value): + # Clicking the same selection a second time deselects everything, which is + # expressed by clearing the request properties. + setImageRequestProp(pname, []) + else: + setImageRequestProp(pname, value) + + +def subComponentPropValue(item): + t = itemSubComponentType(item) + + if t == ViewSubComponent: + return ["view", itemSubComponentValue(item)] + + if t == LayerSubComponent: + parent = item.parent() + view = ( + itemSubComponentValue(parent) + if itemSubComponentType(parent) == ViewSubComponent + else "" + ) + return ["layer", view, itemSubComponentValue(item)] + + if t == ChannelSubComponent: + parent = item.parent() + pvalue = subComponentPropValue(parent) + s = len(pvalue) + value = itemSubComponentValue(item) + + assert s in (0, 2, 3) + if s == 0: + return ["channel", "", "", value] + if s == 2: + return ["channel", pvalue[1], "", value] + return ["channel", pvalue[1], pvalue[2], value] + + return [] + + +def setNodeRequest(node, value): + commands.setStringProperty(node + ".request.imageComponent", value, True) + + +def loadUIFile(path, parent): + """Mu's loadUIFile(), which has no Python counterpart.""" + uifile = QtCore.QFile(path) + uifile.open(QtCore.QFile.ReadOnly) + try: + return QUiLoader().load(uifile, parent) + finally: + uifile.close() + + +def _model_settle_ms(): + """How long the Mu mode waits for QStandardItemModel to become consistent + again after a drop. Windows needs longer.""" + return 200 if sys.platform.startswith("win") else 100 + + +class ThumbnailWidget(QtWidgets.QLabel): + """Displays a static thumbnail image, falling back to a placeholder pixmap.""" + + def __init__(self, parent): + QtWidgets.QLabel.__init__(self, parent) + self.setScaledContents(True) + + def setFallback(self, pixmap): + self.setPixmap(pixmap) + + def load(self, path): + pixmap = QtGui.QPixmap.fromImage(QtGui.QImage(path, ""), Qt.AutoColor) + if not pixmap.isNull(): + self.setPixmap(pixmap) + + +class FilmstripWidget(QtWidgets.QLabel): + """A scrubbable filmstrip: shows the frame under the mouse position.""" + + def __init__(self, parent): + QtWidgets.QLabel.__init__(self, parent) + self._strip = QtGui.QImage() + self._frameWidth = FILMSTRIP_FRAME_WIDTH + self._loaded = False + self.setScaledContents(True) + self.setMouseTracking(True) + + def showFrameAtX(self, mouseX): + if not self._loaded or self.width() <= 0: + return + nativeWidth = self._strip.width() + proportionX = float(mouseX) / float(self.width()) + frameX = ( + int(proportionX * float(nativeWidth) / float(self._frameWidth) + 0.5) + * self._frameWidth + ) + if frameX > nativeWidth - self._frameWidth: + clampedX = nativeWidth - self._frameWidth + elif frameX < 0: + clampedX = 0 + else: + clampedX = frameX + frame = self._strip.copy( + QtCore.QRect(clampedX, 0, self._frameWidth, self._strip.height()) + ) + self.setPixmap(QtGui.QPixmap.fromImage(frame, Qt.AutoColor)) + + def isLoaded(self): + return self._loaded + + def load(self, path): + filmstripImage = QtGui.QImage(path, "") + if not filmstripImage.isNull(): + self._strip = filmstripImage + self._loaded = True + + def mouseMoveEvent(self, event): + self.showFrameAtX(event.position().toPoint().x()) + QtWidgets.QLabel.mouseMoveEvent(self, event) + + +class SourcePreviewWidget(QtWidgets.QWidget): + """Thumbnail by default; on hover, the filmstrip scrubbed to the cursor.""" + + def __init__(self, parent): + QtWidgets.QWidget.__init__(self, parent) + self.setAttribute(Qt.WA_Hover, True) + + self._thumbnail = ThumbnailWidget(self) + self._thumbnail.setGeometry( + QtCore.QRect(0, 0, SOURCE_PREVIEW_WIDTH, SOURCE_PREVIEW_HEIGHT) + ) + self._thumbnail.show() + + self._filmstrip = FilmstripWidget(self) + self._filmstrip.setGeometry( + QtCore.QRect(0, 0, SOURCE_PREVIEW_WIDTH, SOURCE_PREVIEW_HEIGHT) + ) + self._filmstrip.hide() + + def setFallback(self, pixmap): + self._thumbnail.setFallback(pixmap) + + def loadStrip(self, path): + self._filmstrip.load(path) + + def loadThumbnail(self, path): + self._thumbnail.load(path) + + def event(self, event): + if event.type() == QtCore.QEvent.HoverEnter: + if self._filmstrip.isLoaded(): + self._filmstrip.showFrameAtX( + self.mapFromGlobal(QtGui.QCursor.pos()).x() + ) + self._filmstrip.show() + self._thumbnail.hide() + return True + if event.type() == QtCore.QEvent.HoverLeave: + self._filmstrip.hide() + self._thumbnail.show() + return True + return QtWidgets.QWidget.event(self, event) + + +class NodeModel(QtGui.QStandardItemModel): + """QStandardItemModel with modified drag and drop mime types.""" + + def __init__(self, parent): + QtGui.QStandardItemModel.__init__(self, parent) + + def mimeTypes(self): + return list(QtGui.QStandardItemModel.mimeTypes(self)) + [ + "text/uri-list", + "text/plain", + ] + + def mimeData(self, indices): + d = QtGui.QStandardItemModel.mimeData(self, indices) + urls = [] + text = [] + + # + # rvnode URL looks like: + # + # rvnode://RVID/NODETYPE/NODENAME/PATH/TO/MEDIA + # + # RVID can be nothing or an open port on a machine and possibly user like + # rvnode://me@foo:12332/.... right now we only support the empty RVID + # + try: + for index in indices: + n = nodeFromIndex(index, self) + ntype = commands.nodeType(n) + rvid = "%s@%s:%s" % ( + commands.remoteLocalContactName(), + commands.myNetworkHost(), + commands.myNetworkPort(), + ) + + if ntype == "RVSourceGroup": + media = commands.getStringProperty("%s_source.media.movie" % n) + text.append("RVFileSource %s.media.movie = %s\n" % (n, media)) + for m in media: + urls.append( + QtCore.QUrl("rvnode://%s/%s/%s/%s" % (rvid, ntype, n, m)) + ) + else: + text.append("%s %s\n" % (ntype, n)) + urls.append(QtCore.QUrl("rvnode://%s/%s/%s" % (rvid, ntype, n))) + + d.setText("".join(text)) + d.setUrls(urls) + except Exception as exc: + print("CAUGHT %s\n" % exc) + + return d + + +class NodeTreeView(QtWidgets.QTreeView): + """The session tree, with drag and drop constrained. + + QStandardItemModel would otherwise unconditionally accept items from models + that have nothing to do with the session manager, and it reports inconsistent + state during a drag (notably while emitting itemChanged), which is why the sort + that follows a drop runs off a timer instead of inline. + """ + + def __init__(self, parent): + QtWidgets.QTreeView.__init__(self, parent) + self._dropAction = Qt.IgnoreAction + self._draggedNodePaths = [] + self._draggingNonFolders = False + self._viewModel = None + self._sortFolders = [] + self._foldersItem = None + self._sortTimer = QtCore.QTimer(self) + self._sortTimer.setSingleShot(True) + self._sortTimer.timeout.connect(self.sortFolders) + + def sortFolderChildren(self, folder): + if commands.nodeType(folder) == "RVFolderGroup": + if folder not in self._sortFolders: + self._sortFolders.append(folder) + + def selectedNodePaths(self): + indices = self.selectionModel().selectedIndexes() + paths = [] + + for index in indices: + if index.column() == 0: + path = [] + while True: + item = self._viewModel.itemFromIndex(index) + path.append(itemNode(item)) + index = index.parent() + if not index.isValid(): + break + paths.append(path) + + return paths + + def filteredDraggedPaths(self, F): + return [path for path in self._draggedNodePaths if F(path)] + + def dragEnterEvent(self, event): + sourceWidget = event.source() + mimeData = event.mimeData() + + if sourceWidget is self: + self._draggedNodePaths = self.selectedNodePaths() + self._draggingNonFolders = False + + for path in self._draggedNodePaths: + if ( + commands.nodeExists(path[0]) + and commands.nodeType(path[0]) != "RVFolderGroup" + ): + self._draggingNonFolders = True + + if self._foldersItem is not None: + self._foldersItem.setFlags( + Qt.ItemIsEnabled + if self._draggingNonFolders + else Qt.ItemIsDropEnabled | Qt.ItemIsEnabled + ) + + QtWidgets.QAbstractItemView.dragEnterEvent(self, event) + elif sourceWidget is not None: + pass # allow it to be rejected + else: + print("No like source: %s\n" % str(sourceWidget)) + # don't accept it + print("--formats--\n") + for f in mimeData.formats(): + print("%s\n" % f) + + if mimeData.hasUrls(): + print("--urls--\n") + for u in mimeData.urls(): + print("%s\n" % u.toString()) + + if mimeData.hasText(): + print("--text--\n") + print("%s\n" % mimeData.text()) + + def dragMoveEvent(self, event): + index = self.indexAt(event.position().toPoint()) + item = self._viewModel.itemFromIndex(index) + + if item is None: + event.ignore() + return + + node = itemNode(item) + + if item.column() != 0: + event.ignore() + return + + if event.dropAction() == Qt.CopyAction and commands.nodeExists(node): + outs = commands.nodeConnections(node)[1] + ntype = commands.nodeType(node) + + for path in self._draggedNodePaths: + if len(path) > 1 and commands.nodeExists(path[1]): + if ntype != "RVFolderGroup": + # + # don't allow dropping on a non-folder sibling either, + # this is basically a reorder/copy + # + for out in outs: + if out == path[1]: + event.ignore() + return + + if path[1] == node: + event.ignore() + return + + QtWidgets.QTreeView.dragMoveEvent(self, event) + + def dropEvent(self, event): + self._dropAction = event.dropAction() + QtWidgets.QTreeView.dropEvent(self, event) + + self._draggedNodePaths = [] + self._dropAction = Qt.IgnoreAction + self._sortTimer.start(_model_settle_ms()) + + def sortFolders(self): + for folder in self._sortFolders: + item = itemOfNode(self._viewModel, folder) + if item is not None: + assignSortOrder(item) + + self._sortFolders = [] + + +class InputsView(QtWidgets.QListView): + """The inputs list, forcing a copy for drops coming from the session tree.""" + + def __init__(self, treeView, parent, dropCleanup=None): + self._viewTreeView = treeView + QtWidgets.QListView.__init__(self, parent) + self._dropTimer = QtCore.QTimer(self) + self._dropTimer.setSingleShot(True) + if dropCleanup is not None: + self._dropTimer.timeout.connect(dropCleanup) + + def dragEnterEvent(self, event): + if event.source() is self._viewTreeView: + # force a copy from the tree view + event.setDropAction(Qt.CopyAction) + + QtWidgets.QAbstractItemView.dragEnterEvent(self, event) + + def dropEvent(self, event): + QtWidgets.QListView.dropEvent(self, event) + if event.source() is self._viewTreeView: + # update the tree if the drop came from there + self._dropTimer.start(_model_settle_ms()) + + +class EventFilter(QtCore.QObject): + """Forwards events to RV's main view so shortcuts keep working in the dock.""" + + def __init__(self, parent): + QtCore.QObject.__init__(self, parent) + + def eventFilter(self, obj, event): + view = qtutils.sessionGLView() + return view.eventFilter(obj, event) + + +class SessionManagerMode(rv.rvtypes.MinorMode): + # + # Some helper functions. Some of the Qt interface is a bit + # verbose and/or I'm too inexperienced to know how to do this in + # a more succinct way. + # + + def colorAdjustedIcon(self, rpath, invertSense): + bg = QtWidgets.QApplication.palette().color( + QtGui.QPalette.Active, QtGui.QPalette.Window + ) + icon0 = QtGui.QImage(rpath.replace("48x48", "out"), "") + icon1 = QtGui.QImage(rpath, "") + swap = invertSense != self._darkUI + qimage = icon0 if swap else icon1 + + icon = QtGui.QIcon(QtGui.QPixmap.fromImage(qimage, Qt.AutoColor)) + + icon.addPixmap( + QtGui.QPixmap.fromImage(icon1, Qt.AutoColor), + QtGui.QIcon.Selected, + QtGui.QIcon.Off, + ) + + return icon + + def auxFilePath(self, icon): + return os.path.join( + self.supportPath(sys.modules[__name__], "session_manager"), icon + ) + + def auxIcon(self, name, colorAdjust=False): + if colorAdjust: + return self.colorAdjustedIcon(":images/" + name, False) + return QtGui.QIcon(":images/" + name) + + def splitterMoved(self, pos, index): + propName = "#Session.sm_window.splitter" + fpos = float(pos) / float(self._splitter.height()) + + if not commands.propertyExists(propName): + commands.newProperty(propName, commands.FloatType, 1) + + setFloatProp(propName, fpos) + + def selectInputsRange(self, selectionList): + smodel = self._inputsView.selectionModel() + + for row in selectionList: + index = self._inputsModel.index(row, 0, QtCore.QModelIndex()) + smodel.select(index, QtCore.QItemSelectionModel.Select) + + def iconForNode(self, node): + typeName = commands.nodeType(node) + cprop = node + ".sm_state.componentSubType" + + if commands.propertyExists(cprop): + prop = commands.getIntProperty(cprop) + + if len(prop) > 0: + front = prop[0] + if front == ViewSubComponent: + return self._viewIcon + if front == LayerSubComponent: + return self._layerIcon + if front == ChannelSubComponent: + return self._channelIcon + + for name, icon in self._typeIcons: + if name == typeName: + return icon + return self._unknownTypeIcon + + def viewEditModeActivated(self, event): + event.reject() + commands.sendInternalEvent("session-manager-load-ui", commands.viewNode()) + + def enterQuittingState(self, event): + # + # Set quitting flag in response to imminent session deletion. Note + # that this relies on the fact that this mode receives the + # before-session-deletion event prior to the ModeManager mode. + # + + self._quitting = True + event.reject() + + def onCategoryStateChanged(self, event): + if self._active and not commands.isEventCategoryEnabled("sessionmanager_category"): + self.toggle() + event.reject() + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + + if self._dockWidget is not None: + self._dockWidget.installEventFilter(self._eventFilter) + + try: + s = str(commands.readSettings("SessionManager", "showOnStartup", "no")) + + if s == "last": + commands.writeSettings("Tools", "show_session_manager", True) + except Exception: + commands.writeSettings("SessionManager", "showOnStartup", "no") + commands.writeSettings("Tools", "show_session_manager", False) + + self._dockWidget.show() + self.updateTree() + commands.sendInternalEvent("session-manager-load-ui", commands.viewNode()) + + def deactivate(self): + rv.rvtypes.MinorMode.deactivate(self) + + if self._dockWidget is not None: + self._dockWidget.removeEventFilter(self._eventFilter) + + try: + s = str(commands.readSettings("SessionManager", "showOnStartup", "no")) + + if s == "last" and not self._quitting: + commands.writeSettings("Tools", "show_session_manager", False) + except Exception: + commands.writeSettings("SessionManager", "showOnStartup", "no") + commands.writeSettings("Tools", "show_session_manager", False) + + self._lazySetInputsTimer.stop() + self._lazyUpdateTimer.stop() + self._dockWidget.hide() + + def setNodeStatus(self, node, status): + items = mapItems( + self._viewModel, + lambda i: itemNode(i) == node and not itemIsSubComponent(i), + ) + + for i in items: + sitem = i.parent().child(i.row(), 2) + + if sitem is None: + i.parent().setChild(i.row(), 2, QtGui.QStandardItem(status)) + else: + sitem.setText(status) + + def viewByIndex(self, index, model): + item = model.itemFromIndex(index) + node = itemNode(item) + subType = itemSubComponentType(item) + + self._disableUpdates = True + + try: + viewChange = False + if commands.viewNode() != node: + commands.setViewNode(node) + viewChange = True + + if subType != NotASubComponent: + setImageRequest(subComponentPropValue(item), not viewChange) + except Exception: + pass + + self._disableUpdates = False + self.updateInputs(commands.viewNode()) + + def itemPressed(self, index, model): + item0 = model.itemFromIndex(index) + sindex = index.sibling(index.row(), 0) + item = model.itemFromIndex(sindex) + subType = itemSubComponentType(item) + + if ( + item0.column() == 1 + and subType != NotASubComponent + and subType != MediaSubComponent + ): + self.viewByIndex(sindex, model) + + def viewItemChanged(self, item): + node = itemNode(item) + subType = itemSubComponentType(item) + parentItem = item.parent() + parent = None if parentItem is None else itemNode(parentItem) + nodePaths = self._viewTreeView.filteredDraggedPaths(lambda p: p[0] == node) + + if self._viewTreeView._dropAction == Qt.CopyAction: + # + # You can get called *twice* here if you have multiple + # columns, but it will be giving you the 0th column + # only! so Just don't allow input copies from dnd + # + + if not hasInput(parent, node): + addInput(parent, node) + item.setData(parent, Qt.UserRole + 1) + if ( + parent is not None + and commands.nodeExists(parent) + and commands.nodeType(parent) == "RVFolderGroup" + ): + self._viewTreeView.sortFolderChildren(parent) + elif self._viewTreeView._dropAction == Qt.MoveAction and nodePaths: + parentExists = parent is not None and commands.nodeExists(parent) + + if parentExists: + if not hasInput(parent, node): + addInput(parent, node) + + item.setData(parent if parentExists else "", Qt.UserRole + 1) + + for path in nodePaths: + if len(path) > 1: + n = path[0] + p = path[1] + + if commands.nodeExists(p) and (not parentExists or p != parent): + removeInput(p, n) + + if parentExists and commands.nodeType(parent) == "RVFolderGroup": + self._viewTreeView.sortFolderChildren(parent) + elif node != "" and subType == NotASubComponent: + self._disableUpdates = True + + try: + extra_commands.setUIName(node, item.text()) + except Exception: + print("failed to set name on %s to %s\n" % (node, item.text())) # bad + + self._disableUpdates = False + + def viewSelectionChanged(self, selected, deselected): + indices = selected.indexes() + + if indices: + index = indices[0] + + # + # Only consider top-level items + # + + if index.parent().parent().row() == -1: + rows = self._viewTreeView.selectionModel().selectedRows(0) + if rows: + self.viewByIndex(rows[0], self._viewModel) + + def updateInputs(self, node): + if self._disableUpdates or self._progressiveLoadingInProgress: + return + + self._inputOrderLock = True + + topNode = None + topIndex = self._inputsView.indexAt(QtCore.QPoint(0, 0)) + if topIndex.isValid(): + topNode = nodeFromIndex(topIndex, self._inputsModel) + + self._inputsModel.clear() + connections = nodeInputs(node) + + for innode in connections: + isSource = commands.nodeType(innode) == "RVSourceGroup" + item = QtGui.QStandardItem( + self.iconForNode(innode), extra_commands.uiName(innode) + ) + + item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsDragEnabled | Qt.ItemIsEnabled) + item.setData(innode, Qt.UserRole + 2) + item.setEditable(False) + + if isSource and self._previewsEnabled: + item.setText("") + item.setSizeHint(QtCore.QSize(-1, SOURCE_ROW_HEIGHT)) + + self._inputsModel.appendRow(item) + + if isSource and self._previewsEnabled: + self._inputsView.setIndexWidget( + self._inputsModel.indexFromItem(item), self.makeSourceRowWidget(innode) + ) + + self._inputOrderLock = False + + if topNode is not None: + topItem = itemOfNode(self._inputsModel, topNode) + if topItem is not None: + self._inputsView.scrollTo( + self._inputsModel.indexFromItem(topItem), + QtWidgets.QAbstractItemView.PositionAtTop, + ) + + def selectViewableNode(self): + node = commands.viewNode() + if node is None: + return + + cols = self._viewModel.columnCount(QtCore.QModelIndex()) + smodel = self._viewTreeView.selectionModel() + items = mapItems(self._viewModel, lambda i: itemNode(i) == node) + + smodel.clear() + + for item in items: + index = self._viewModel.indexFromItem(item) + selection = QtCore.QItemSelection( + index, index.sibling(index.row(), cols - 1) + ) + + smodel.select(selection, QtCore.QItemSelectionModel.SelectCurrent) + self.updateInputs(node) + self._viewTreeView.scrollTo(index, QtWidgets.QAbstractItemView.EnsureVisible) + break + + def selectCurrentViewSlot(self, checked): + self.selectViewableNode() + + def updateNavUI(self): + n = commands.viewNode() + + if n is None: + return + + self._viewLabel.setText(extra_commands.uiName(n)) + self._prevViewButton.setEnabled(commands.previousViewNode() is not None) + self._nextViewButton.setEnabled(commands.nextViewNode() is not None) + + def afterGraphViewChange(self, event): + event.reject() + + n = commands.viewNode() + + if n is None: + return + t = commands.nodeType(n) + + self.selectViewableNode() + self.setNodeStatus(commands.viewNode(), "\u2714") + + self.updateNavUI() + self.restoreTabState() + + # + # Disable inputs for the types we know don't allow any + # + + self._inputsView.setEnabled( + t != "RVSource" + and t != "RVFileSource" + and t != "RVImageSource" + and t != "RVSourceGroup" + ) + + commands.sendInternalEvent("session-manager-load-ui", commands.viewNode()) + + def addEditor(self, name, widget): + item = QtWidgets.QTreeWidgetItem([name], QtWidgets.QTreeWidgetItem.Type) + child = QtWidgets.QTreeWidgetItem([""], QtWidgets.QTreeWidgetItem.Type) + + widget.setAutoFillBackground(True) + item.setIcon(0, QtGui.QIcon(":/images/radio_button_on_default.png")) + item.setFlags(Qt.ItemIsEnabled) + + item.addChild(child) + self._uiTreeWidget.addTopLevelItem(item) + self._uiTreeWidget.setItemWidget(child, 0, widget) + widget.show() + item.setExpanded(True) + + self._editors.append(item) + + def useEditor(self, name): + for e in self._editors: + if name == e.text(0): + e.setHidden(False) + + def reloadEditorTab(self): + for e in self._editors: + e.setHidden(True) + commands.sendInternalEvent("session-manager-load-ui", commands.viewNode()) + + def beforeGraphViewChange(self, event): + for e in self._editors: + e.setHidden(True) + event.reject() + self.saveTabState() + self.setNodeStatus(commands.viewNode(), "") + + def nodeInputsChanged(self, event): + if commands.viewNode() is None: + return + node = event.contents() + if node == commands.viewNode(): + self.updateInputs(node) + + if ( + commands.nodeType(node) == "RVFolderGroup" + and self._viewTreeView._dropAction == Qt.IgnoreAction + ): + self._lazyUpdateTimer.start(0) + + event.reject() + + def propertyChanged(self, event): + prop = event.contents() + parts = prop.split(".") + node = parts[0] + comp = parts[1] + name = parts[2] + + # + # If a UI name changes we need to update the tree + # Or if someone else resorts the nodes. + # + + if comp == "ui" and name == "name": + self._lazyUpdateTimer.start(0) + self.updateNavUI() + elif comp == "sm_state" and (name == "sortKey" or name == "sortKeyParent"): + self._lazyUpdateTimer.start(0) + elif comp == "request" and name == "imageComponent": + topNode = commands.nodeGroup(node) + pval = commands.getStringProperty(prop) + + for item in subComponentItemsOfNode(self._viewModel, topNode): + selected = contents_equal(pval, subComponentPropValue(item)) + checkitem = item.parent().child(item.row(), 1) + + checkitem.setIcon( + QtGui.QIcon(":/images/radio_button_blue_on.png") + if selected + else QtGui.QIcon(":/images/radio_button_dark.png") + ) + + event.reject() + + def setItemExpandedState(self, index, value): + item = self._viewModel.itemFromIndex(index) + node = itemNode(item) + subComp = itemIsSubComponent(item) + + if subComp: + setSubComponentExpanded(node, item, value == 1) + else: + if commands.nodeExists(node): + parent = itemNode(item.parent()) + setExpandedInParent(node, parent, value == 1) + else: + propName = "#Session.sm_view.%s" % item.text() + setIntProp(propName, value) + + resizeColumns(self._viewTreeView, self._viewModel) + + def viewContextMenuSlot(self, pos): + if self._viewContextMenu is None: + self._viewContextMenu = QtWidgets.QMenu(self._viewTreeView) + + folderMenu = self._viewContextMenu.addMenu(self._folderMenu) + folderMenu.setIcon(self.auxIcon("foldr_48x48.png", True)) + + createMenu = self._viewContextMenu.addMenu(self._createMenu) + createMenu.setIcon(self.auxIcon("add_48x48.png", True)) + + for a in self._viewContextMenuActions: + self._viewContextMenu.addAction(a) + + self._viewContextMenu.exec(self._viewTreeView.mapToGlobal(pos)) + + def newNodeStatusColumns(self, node): + items = [] + + for _ in range(2): + item = QtGui.QStandardItem("") + item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable) + items.append(item) + + return items + + def newNodeSubComponent( + self, subComponent, parentItem, media, fullName, node, parent, selected + ): + name = os.path.basename(fullName) if subComponent == MediaSubComponent else fullName + item = QtGui.QStandardItem("default" if name == "" else name) + + if name == "": + font = item.font() + font.setItalic(True) + item.setFont(font) + + item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsDragEnabled | Qt.ItemIsEnabled) + item.setData(parent, Qt.UserRole + 1) + item.setData(node, Qt.UserRole + 2) + item.setData(subComponent, Qt.UserRole + 4) + item.setData(fullName, Qt.UserRole + 5) + item.setData(media, Qt.UserRole + 7) + item.setEditable(True) + + if subComponent == ViewSubComponent: + item.setIcon(self._viewIcon) + elif subComponent == LayerSubComponent: + item.setIcon(self._layerIcon) + elif subComponent == ChannelSubComponent: + item.setIcon(self._channelIcon) + + sitems = self.newNodeStatusColumns(node) + selitem = sitems[0] + + if subComponent != MediaSubComponent: + selitem.setIcon( + QtGui.QIcon( + ":/images/radio_button_blue_on.png" + if selected + else ":/images/radio_button_dark.png" + ) + ) + + addRow(parentItem, [item] + sitems) + + item.setData(hashedSubComponent(item), Qt.UserRole + 6) + + if subComponent != ChannelSubComponent and isSubComponentExpanded(node, item): + self._viewTreeView.setExpanded(self._viewModel.indexFromItem(item), True) + + return item + + def makeSourceRowWidget(self, node): + sourceNode = None + try: + sourceNode = sourceNodeOfGroup(node) + except Exception as exc: + print( + "WARNING: Could not get source node for %s - %s\n" + % (extra_commands.uiName(node), exc) + ) + + widget = QtWidgets.QWidget(None) + layout = QtWidgets.QHBoxLayout(widget) + widget.setObjectName("sourceRowWidget") + layout.setContentsMargins(SOURCE_ROW_MARGIN, 0, SOURCE_ROW_MARGIN, 0) + layout.setSpacing(SOURCE_ROW_SPACING) + + preview = SourcePreviewWidget(widget) + preview.setFixedSize(QtCore.QSize(SOURCE_PREVIEW_WIDTH, SOURCE_PREVIEW_HEIGHT)) + preview.setFallback( + self._fallbackSourceIcon.pixmap( + QtCore.QSize(SOURCE_PREVIEW_WIDTH, SOURCE_PREVIEW_HEIGHT) + ) + ) + + meta = "" + + if sourceNode is not None: + # Fetch filmstrip/thumbnail paths. The local plugin has a lower priority of + # 10 for ordering. This means any custom plugin of higher priority will be used first. + # This allows users to override the local plugin with a custom plugin by making sure + # the ordering is less than 10 and using event.accept() to prevent the local plugin from running. + thumbnailPath = commands.sendInternalEvent( + "session-manager-get-thumbnail-path", sourceNode + ) + if thumbnailPath != "" and os.path.exists(thumbnailPath): + preview.loadThumbnail(thumbnailPath) + + filmstripPath = commands.sendInternalEvent( + "session-manager-get-filmstrip-path", sourceNode + ) + if filmstripPath != "" and os.path.exists(filmstripPath): + preview.loadStrip(filmstripPath) + + mediaPropertyPath = sourceNode + ".media.movie" + if commands.propertyExists(mediaPropertyPath): + movieProperty = commands.getStringProperty(mediaPropertyPath) + if len(movieProperty) > 0: + parts = os.path.basename(movieProperty[0]).split(".") + if len(parts) > 1: + meta = parts[-1] + + layout.addWidget(preview) + + textWidget = QtWidgets.QWidget(widget) + textLayout = QtWidgets.QVBoxLayout(textWidget) + textWidget.setObjectName("sourceTextWidget") + textLayout.setSpacing(SOURCE_TEXT_SPACING) + + nameLabel = QtWidgets.QLabel(extra_commands.uiName(node), textWidget) + nameLabel.setObjectName("sourceNameLabel") + textLayout.addWidget(nameLabel) + + metaLabel = QtWidgets.QLabel("\u2014" if meta == "" else meta, textWidget) + metaLabel.setObjectName("sourceMetaLabel") + textLayout.addWidget(metaLabel) + textLayout.addStretch(1) + + layout.addWidget(textWidget, 1) + + return widget + + def newNodeRow(self, parentItem, node, parent, recursive=False): + ntype = commands.nodeType(node) + item = QtGui.QStandardItem(extra_commands.uiName(node)) + folder = ntype == "RVFolderGroup" + source = ntype == "RVSourceGroup" + sortKey = sortKeyInParent(node, parent) + toolTip = toolTipFromProp(node) + icon = self.iconForNode(node) + + item.setFlags( + Qt.ItemIsSelectable + | Qt.ItemIsDragEnabled + | Qt.ItemIsEnabled + | (Qt.ItemIsDropEnabled if folder else Qt.NoItemFlags) + ) + item.setData(parent, Qt.UserRole + 1) + item.setData(node, Qt.UserRole + 2) + item.setData(sortKey, Qt.UserRole + 3) + item.setData(NotASubComponent, Qt.UserRole + 4) + item.setEditable(True) + item.setIcon(icon) + item.setRowCount(0) + + statusItems = self.newNodeStatusColumns(node) + if node == commands.viewNode(): + statusItems[1].setText("\u2714") + addRow(parentItem, [item] + statusItems) + + if source and self._previewsEnabled: + item.setText("") + item.setSizeHint(QtCore.QSize(-1, SOURCE_ROW_HEIGHT)) + self._viewTreeView.setIndexWidget( + self._viewModel.indexFromItem(item), self.makeSourceRowWidget(node) + ) + + # + # Tabs in tooltips make win32 Qt crash. + # + + item.setToolTip("" if toolTip is None else toolTip.replace("\t", " ")) + + if folder and recursive: + for n in commands.nodeConnections(node)[0]: + self.newNodeRow(item, n, node, recursive) + + if isExpandedInParent(node, parent): + self._viewTreeView.setExpanded(self._viewModel.indexFromItem(item), True) + + if source: + if not commands.propertyExists(node + ".sm_state.componentHash"): + # + # Don't do this for nodes representing parts of existing + # nodes. Those will have the property + # node.sm_state.componentHash + # + + sourceNode = sourceNodeOfGroup(node) + self._srcNodeKeys.append(sourceNode) + self._grpNodeValues.append(node) + pval = commands.getStringProperty(sourceNode + ".request.imageComponent") + hasPval = len(pval) > 1 + iname = pval[-1] if hasPval else None + itype = ( + itemSubComponentTypeForName(pval[0]) if hasPval else NotASubComponent + ) + + try: + for info in commands.sourceMediaInfoList(sourceNode): + fileItem = self.newNodeSubComponent( + MediaSubComponent, + item, + info["file"], + info["file"], + node, + parent, + False, + ) + + font = fileItem.font() + font.setBold(True) + fileItem.setFont(font) + topItem = fileItem + + for v in info["viewInfos"]: + if len(info["viewInfos"]) > 1 and v["name"] != "": + selected = itype == ViewSubComponent and iname == v["name"] + + topItem = self.newNodeSubComponent( + ViewSubComponent, + fileItem, + info["file"], + v["name"], + node, + parent, + selected, + ) + else: + topItem = fileItem + + nlayers = len(v["layers"]) + + for l in v["layers"]: + unnamed = l["name"] == "" + selected = itype == LayerSubComponent and iname == l["name"] + + if nlayers > 1 and unnamed: + layerItem = self.newNodeSubComponent( + LayerSubComponent, + topItem, + info["file"], + "", + node, + parent, + selected, + ) + elif not unnamed: + layerItem = self.newNodeSubComponent( + LayerSubComponent, + topItem, + info["file"], + l["name"], + node, + parent, + selected, + ) + else: + layerItem = topItem + + for c in l["channels"]: + selected = ( + itype == ChannelSubComponent and iname == c["name"] + ) + + self.newNodeSubComponent( + ChannelSubComponent, + layerItem, + info["file"], + c["name"], + node, + parent, + selected, + ) + + if v["layers"] and v["noLayerChannels"]: + selected = itype == LayerSubComponent and iname == "" + + topItem = self.newNodeSubComponent( + LayerSubComponent, + topItem, + info["file"], + "", + node, + parent, + selected, + ) + + for c in v["noLayerChannels"]: + selected = itype == ChannelSubComponent and iname == c["name"] + + self.newNodeSubComponent( + ChannelSubComponent, + topItem, + info["file"], + c["name"], + node, + parent, + selected, + ) + except Exception: + pass # ignore + else: + try: + pname = node + ".sm_state.componentOfNode" + cnode = commands.getStringProperty(pname)[0] + emptyItem = QtGui.QStandardItem( + "(subcompoment of %s)" % extra_commands.uiName(cnode) + ) + font = emptyItem.font() + + font.setItalic(True) + emptyItem.setFont(font) + addRow(item, [emptyItem, QtGui.QStandardItem("")]) + except Exception: + pass + + def updateTree(self): + if self._disableUpdates: + return + self._srcNodeKeys = [] + self._grpNodeValues = [] + self._viewModel.clear() + self._viewModel.setHorizontalHeaderLabels(["Name", "*", "*"]) + self._viewTreeView.header().setMinimumSectionSize(-1) + if commands.viewNode() is None: + return + + try: + self._viewModel.setSortRole(Qt.UserRole + 3) # the sort key is an int + + viewNodes = commands.viewNodes() + foldersItem = QtGui.QStandardItem("FOLDERS") + sourcesItem = QtGui.QStandardItem("SOURCES") + sequencesItem = QtGui.QStandardItem("SEQUENCES") + stackItem = QtGui.QStandardItem("STACKS") + layoutItem = QtGui.QStandardItem("LAYOUTS") + otherItem = QtGui.QStandardItem("OTHER") + categoryItems = [ + foldersItem, + sourcesItem, + sequencesItem, + stackItem, + layoutItem, + otherItem, + ] + fgMac = QtGui.QBrush(QtGui.QColor(80, 80, 80, 255), Qt.SolidPattern) + fgOther = QtGui.QBrush(QtGui.QColor(125, 125, 125, 255), Qt.SolidPattern) + foreground = fgOther if self._darkUI else fgMac + + for item in categoryItems: + item.setFlags(Qt.ItemIsEnabled) + item.setForeground(foreground) + item.setSizeHint(QtCore.QSize(-1, 25)) + item.setData("", Qt.UserRole + 1) + item.setData("", Qt.UserRole + 2) + item.setData(MU_INT_MAX, Qt.UserRole + 3) + + foldersItem.setFlags(Qt.ItemIsEnabled | Qt.ItemIsDropEnabled) + self._viewTreeView._foldersItem = foldersItem + + categoryOfType = { + "RVFileSource": sourcesItem, + "RVImageSource": sourcesItem, + "RVSourceGroup": sourcesItem, + "RVSequenceGroup": sequencesItem, + "RVStackGroup": stackItem, + "RVLayoutGroup": layoutItem, + "RVFolderGroup": foldersItem, + } + + for node in viewNodes: + ntype = commands.nodeType(node) + outs = commands.nodeConnections(node)[1] + + folderParent = False + for o in outs: + if commands.nodeType(o) == "RVFolderGroup": + folderParent = True + + if not folderParent: + self.newNodeRow(categoryOfType.get(ntype, otherItem), node, "", True) + + for item in categoryItems: + if item.rowCount() != 0: + text = item.text() + propName = "#Session.sm_view.%s" % text + + if not commands.propertyExists(propName): + commands.newProperty(propName, commands.IntType, 1) + commands.setIntProperty(propName, [1], True) + + dummy1 = QtGui.QStandardItem("") + dummy2 = QtGui.QStandardItem("") + dummy1.setFlags(Qt.ItemIsEnabled) + dummy2.setFlags(Qt.ItemIsEnabled) + self._viewModel.appendRow([item, dummy1, dummy2]) + self._viewTreeView.setExpanded( + self._viewModel.indexFromItem(item), + commands.getIntProperty(propName)[0] == 1, + ) + + self._viewModel.sort(0, Qt.AscendingOrder) + self._viewModel.invisibleRootItem().setFlags(Qt.ItemIsEnabled) + self.selectViewableNode() + + resizeColumns(self._viewTreeView, self._viewModel) + except Exception as exc: + print("%s\n" % exc) + + def updateTreeEvent(self, event): + event.reject() + if self._progressiveLoadingInProgress: + return + self.updateTree() + + def updateNodePreviewEvent(self, event): + event.reject() + if not self._previewsEnabled: + return + sourceNode = event.contents() + + node = None + for i in range(len(self._srcNodeKeys)): + if self._srcNodeKeys[i] == sourceNode: + node = self._grpNodeValues[i] + break + if node is None: + return + + item = itemOfNode(self._viewModel, node) + if item is not None: + self._viewTreeView.setIndexWidget( + self._viewModel.indexFromItem(item), self.makeSourceRowWidget(node) + ) + + inputItem = itemOfNode(self._inputsModel, node) + if inputItem is not None: + self._inputsView.setIndexWidget( + self._inputsModel.indexFromItem(inputItem), self.makeSourceRowWidget(node) + ) + + def beforeProgressiveLoading(self, event): + event.reject() + self._progressiveLoadingInProgress = True + + def afterProgressiveLoading(self, event): + event.reject() + self._progressiveLoadingInProgress = False + self.updateTree() + self.updateInputs(commands.viewNode()) + + def newColorSlot(self, color): + css = "QPushButton{background-color:rgb(%d,%d,%d);}" % ( + color.red(), + color.green(), + color.blue(), + ) + self._cidColorButton.setStyleSheet(css) + self._cidColor = color + + def chooseColorSlot(self, checked): + self._colorDialog.open() + self._colorDialog.setCurrentColor(self._cidColor) + + def renameByType(self, node, inputs): + n = len(inputs) + basename = commands.nodeType(node) + + if re.match("^RV", basename): + basename = basename[2:] + if re.search("Group$", basename): + basename = basename[:-5] + + name = "" + + if n == 0: + name = "Empty %s" % basename + elif n < 3: + name = "%s of " % basename + + for i in range(n): + if i > 0 and n > 2: + name += "," + if i > 0: + name += " " + if i == n - 1 and n > 1: + name += "and " + name += extra_commands.uiName(inputs[i]) + else: + name = "%s of %d views " % (basename, n) + + extra_commands.setUIName(node, name) + + def componentAndFolderNodeFromHash(self, hash, node): + folder = None + cnode = None + + for n in commands.nodes(): + if commands.nodeType(n) == "RVSourceGroup" and cnode is None: + propName = n + ".sm_state.componentHash" + + if commands.propertyExists(propName): + try: + p = commands.getStringProperty(propName) + pn = commands.getStringProperty(n + ".sm_state.componentOfNode") + + if p and p[0] == hash and pn and pn[0] == node: + # cnode is still unset here: the Mu original returns the + # match without recording it, and callers depend on the + # resulting None to build a fresh component node. + return (cnode, folder) + except Exception: + pass + elif commands.nodeType(n) == "RVFolderGroup": + pname = n + ".sm_state.componentFolderOfNode" + if commands.propertyExists(pname): + p = commands.getStringProperty(pname) + if p and p[0] == node: + folder = n + + return (cnode, folder) + + def newSubComponentNode( + self, hash, subType, filename, fullName, compPropValue, node, folder + ): + snode = commands.addSourceVerbose([filename]) + nodeName = extra_commands.uiName(node) + groupNode = commands.nodeGroup(snode) + dname = "default" if fullName == "" else fullName + + if folder is None: + folder = commands.newNode("RVFolderGroup", "%s_components" % node) + extra_commands.setUIName(folder, "Components of %s" % extra_commands.uiName(node)) + setStringProp(folder + ".sm_state.componentFolderOfNode", node) + setExpandedInParent(folder, "", False) + + inputs = list(nodeInputs(folder)) + inputs.append(groupNode) + commands.setNodeInputs(folder, inputs) + + setStringProp(groupNode + ".sm_state.componentOfNode", node) + setStringProp(groupNode + ".sm_state.componentHash", hash) + setIntProp(groupNode + ".sm_state.componentSubType", subType) + + if subType == MediaSubComponent: + extra_commands.setUIName(groupNode, nodeName + " (Media %s)" % dname) + elif subType == ViewSubComponent: + extra_commands.setUIName(groupNode, nodeName + " (View %s)" % dname) + setNodeRequest(snode, compPropValue) + elif subType == LayerSubComponent: + extra_commands.setUIName(groupNode, nodeName + " (Layer %s)" % dname) + setNodeRequest(snode, compPropValue) + elif subType == ChannelSubComponent: + extra_commands.setUIName(groupNode, nodeName + " (Channel %s)" % dname) + setNodeRequest(snode, compPropValue) + + extra_commands.displayFeedback( + "NOTE: Created %s" % extra_commands.uiName(groupNode), 5 + ) + return groupNode + + def sourceFromSubComponent(self, item, node): + hash = hashedSubComponent(item) + cnode, folder = self.componentAndFolderNodeFromHash(hash, node) + + if cnode is not None: + return cnode + + mediaItem = None + viewItem = None + layerItem = None + + i = item + while i is not None and itemSubComponentType(i) != NotASubComponent: + t = itemSubComponentType(i) + if t == MediaSubComponent: + mediaItem = i + break + if t == LayerSubComponent: + layerItem = i + elif t == ViewSubComponent: + viewItem = i + i = i.parent() + + subType = itemSubComponentType(item) + filename = itemSubComponentValue(mediaItem) + fullName = itemSubComponentValue(item) + + return self.newSubComponentNode( + hash, + subType, + filename, + fullName, + subComponentPropValue(item), + node, + folder, + ) + + def selectedConvertedSubComponents(self): + indices = self._viewTreeView.selectionModel().selectedIndexes() + nodes = [] + + for index in indices: + if index.column() == 0: + item = self._viewModel.itemFromIndex(index) + n = itemNode(item) + + if commands.nodeExists(n): + if itemIsSubComponent(item): + self._disableUpdates = True + snode = self.sourceFromSubComponent(item, n) + self._disableUpdates = False + nodes.append(snode) + else: + nodes.append(n) + + return nodes + + def selectedNodes(self): + indices = self._viewTreeView.selectionModel().selectedIndexes() + nodes = [] + + for index in indices: + if index.column() == 0: + n = itemNode(self._viewModel.itemFromIndex(index)) + if commands.nodeExists(n): + nodes.append(n) + + return nodes + + def selectedNodesEvent(self, event): + """Answer "session-manager-selected-nodes" with one node name per line. + + Mu packages used to reach the selection by importing this module and calling + theMode().selectedNodes(). A Mu `require` cannot resolve a Python module, so + the cross-package API is exposed as an internal event instead, which works + the same from either language and does not tie the caller to the + implementation the mode happens to be written in. Newline-separated because + an event's return content is a single string; node names cannot contain + newlines. + """ + event.setReturnContent("\n".join(self.selectedNodes())) + + def selectedItems(self): + indices = self._viewTreeView.selectionModel().selectedIndexes() + items = [] + + for index in indices: + if index.column() == 0: + items.append(self._viewModel.itemFromIndex(index)) + + return items + + def addNodeOfType(self, typename): + nodes = self.selectedConvertedSubComponents() + n = commands.newNode(typename, "") + + if n is None or not setInputs(n, nodes): + if n is not None: + commands.deleteNode(n) + else: + self.renameByType(n, nodes) + commands.setViewNode(n) + + return n + + def addNodeByTypeName(self): + if self._newNodeDialog is None: + m = qtutils.sessionWindow() + + self._newNodeDialog = loadUIFile(self.auxFilePath("new_node.ui"), m) + self._nodeTypeCombo = self._newNodeDialog.findChild( + QtWidgets.QComboBox, "comboBox" + ) + self._nodeTypeCombo.addItems(commands.nodeTypes(True)) + icon = self.auxIcon("new_48x48.png", True) + label = self._newNodeDialog.findChild(QtWidgets.QLabel, "pictureLabel") + label.setPixmap( + icon.pixmap(QtCore.QSize(48, 48), QtGui.QIcon.Normal, QtGui.QIcon.Off) + ) + + def makeNewNodeOfType(): + self.addNodeOfType(self._nodeTypeCombo.currentText()) + + self._newNodeDialog.accepted.connect(makeNewNodeOfType) + + self._newNodeDialog.show() + + def addMovieProc(self, fmtspec): + if self._createImageDialog is None: + m = qtutils.sessionWindow() + + self._createImageDialog = loadUIFile( + self.auxFilePath("create_image_dialog.ui"), m + ) + self._cidWidth = self._createImageDialog.findChild( + QtWidgets.QLineEdit, "widthEdit" + ) + self._cidHeight = self._createImageDialog.findChild( + QtWidgets.QLineEdit, "heightEdit" + ) + self._cidFPS = self._createImageDialog.findChild( + QtWidgets.QLineEdit, "fpsEdit" + ) + self._cidLength = self._createImageDialog.findChild( + QtWidgets.QLineEdit, "lengthEdit" + ) + self._cidPic = self._createImageDialog.findChild( + QtWidgets.QLabel, "pictureLabel" + ) + self._cidGroupBox = self._createImageDialog.findChild( + QtWidgets.QGroupBox, "groupBox" + ) + self._cidColorButton = self._createImageDialog.findChild( + QtWidgets.QPushButton, "colorButton" + ) + self._cidColorLabel = self._createImageDialog.findChild( + QtWidgets.QLabel, "colorLabel" + ) + + f1 = float(commands.readSettings("General", "fps", 24.0)) + + self._cidFPS.setText("%g" % f1) + + def makeImage(): + mp = self._cidFMTSpec % ( + "width=%s,height=%s,fps=%s,start=1,end=%s,red=%g,green=%g,blue=%g" + % ( + self._cidWidth.text(), + self._cidHeight.text(), + self._cidFPS.text(), + self._cidLength.text(), + self._cidColor.redF(), + self._cidColor.greenF(), + self._cidColor.blueF(), + ) + ) + s = commands.addSourceVerbose([mp]) + + extra_commands.setUIName(commands.nodeGroup(s), self._cidName) + + self._createImageDialog.accepted.connect(makeImage) + self._cidColorButton.clicked.connect(self.chooseColorSlot) + + icon = QtGui.QIcon() + ptype = fmtspec.split(",")[0] + + self._cidColorButton.setVisible(True) + self._cidColorLabel.setVisible(True) + self._cidColorButton.setEnabled(False) + self._cidColorLabel.setEnabled(False) + + if ptype == "srgbcolorchart": + self._cidName = "SRGBMacbethColorChart" + icon = self.auxIcon("colorchart_48x48.png", True) + self._cidColorButton.setStyleSheet( + "QPushButton { background-color: rgb(128,128,128); }" + ) + self._cidColorButton.setVisible(False) + self._cidColorLabel.setVisible(False) + self._cidColor = QtGui.QColor(0, 0, 0, 255) + elif ptype == "acescolorchart": + self._cidName = "ACESMacbethColorChart" + icon = self.auxIcon("colorchart_48x48.png", True) + self._cidColorButton.setStyleSheet( + "QPushButton { background-color: rgb(128,128,128); }" + ) + self._cidColorButton.setVisible(False) + self._cidColorLabel.setVisible(False) + self._cidColor = QtGui.QColor(0, 0, 0, 255) + elif ptype == "smptebars": + self._cidName = "SMTPEColorBars" + icon = self.auxIcon("ntscbars_48x48.png", True) + self._cidColorButton.setStyleSheet( + "QPushButton { background-color: rgb(128,128,128); }" + ) + self._cidColorButton.setVisible(False) + self._cidColorLabel.setVisible(False) + self._cidColor = QtGui.QColor(0, 0, 0, 255) + elif ptype == "blank": + self._cidName = "Blank" + icon = self.auxIcon("video_48x48.png", True) + self._cidColorButton.setStyleSheet( + "QPushButton { background-color: rgb(128,128,128); }" + ) + self._cidColorButton.setVisible(False) + self._cidColorLabel.setVisible(False) + self._cidColor = QtGui.QColor(0, 0, 0, 255) + self._cidWidth.setVisible(False) + self._cidHeight.setVisible(False) + elif ptype == "black": + self._cidName = "Black" + icon = self.auxIcon("video_48x48.png", True) + self._cidColorButton.setStyleSheet( + "QPushButton { background-color: rgb(0,0,0); }" + ) + self._cidColor = QtGui.QColor(0, 0, 0, 255) + elif ptype == "solid": + self._cidName = "SolidColor" + icon = self.auxIcon("video_48x48.png", True) + self._cidColorButton.setStyleSheet( + "QPushButton { background-color: rgb(128,128,128); }" + ) + self._cidColorButton.setEnabled(True) + self._cidColorLabel.setEnabled(True) + self._cidColor = QtGui.QColor(128, 128, 128, 255) + + self._cidPic.setPixmap( + icon.pixmap(QtCore.QSize(48, 48), QtGui.QIcon.Normal, QtGui.QIcon.Off) + ) + self._cidGroupBox.setTitle(self._cidName) + self._cidFMTSpec = fmtspec + self._createImageDialog.show() + + def addThingSlot(self, checked, thingstring): + if re.match(r".+\.movieproc$", thingstring): + self.addMovieProc(thingstring) + elif thingstring == "": + self.addNodeByTypeName() + else: + self.addNodeOfType(thingstring) + + def newFolderSlot(self, checked, which): + paths = self._viewTreeView.selectedNodePaths() + folder = commands.newNode("RVFolderGroup", "Folder") + + nodes = [path[0] for path in paths] + + if paths: + first = paths[0] + + if which != 1 and nodes: + if not setInputs(folder, nodes): + if folder is not None: + commands.deleteNode(folder) + return + + self._disableUpdates = True + + if which == 2: + for path in paths: + if len(path) > 1 and commands.nodeExists(path[1]): + removeInput(path[1], path[0]) + + if commands.nodeExists(first[1]): + addInput(first[1], folder) + + setSortKeyInParent(folder, first[1], sortKeyInParent(first[0], first[1])) + + self._disableUpdates = False + + self._disableUpdates = True + self.renameByType(folder, [] if which == 1 else nodes) + self._disableUpdates = False + + if paths: + commands.setViewNode(folder) + + def deleteViewableSlot(self, checked): + items = self.selectedItems() + + for item in items: + node = itemNode(item) + parent = itemParentNode(item) + outs = commands.nodeConnections(node)[1] + parentType = commands.nodeType(parent) if commands.nodeExists(parent) else "" + + nfolders = 0 + for o in outs: + if commands.nodeType(o) == "RVFolderGroup": + nfolders += 1 + + if parentType == "RVFolderGroup" and nfolders > 1: + removeInput(parent, node) + else: + self._disableUpdates = True + + try: + # + # Another weird situation with orphaned + # items. Just avoid it by preventing updates. + # + + commands.deleteNode(node) + except Exception as obj: + print("Error: %s, failed to delete '%s'\n" % (obj, node)) + + self._disableUpdates = False + + self._lazyUpdateTimer.start(0) + + def editViewInfoSlot(self, checked): + indices = self._viewTreeView.selectionModel().selectedIndexes() + if not indices: + return + index = indices[0] + self._viewTreeView.edit(index) + + def reorderSelected(self, up, checked): + indices = self._inputsView.selectionModel().selectedIndexes() + + if not indices: + return + + inputs = nodeInputs(commands.viewNode()) + minRow = min(indices[0].row(), indices[-1].row()) + maxRow = max(indices[0].row(), indices[-1].row()) + + if (up and minRow == 0) or (not up and maxRow == len(inputs) - 1): + return + + numRows = self._inputsModel.rowCount(QtCore.QModelIndex()) + selectionSizes = [] + selectionSize = 0 + for i in range(numRows): + index = self._inputsModel.index(i, 0, QtCore.QModelIndex()) + included = includes(indices, index) + if included: + selectionSize += 1 + elif selectionSize > 0 or len(selectionSizes) > 0: + selectionSizes.append(selectionSize) + selectionSize = 0 + if selectionSize > 0: + selectionSizes.append(selectionSize) + + includedList = [] + newNodes = [""] * numRows + sizeIndex = 0 + for i in range(numRows): + index = self._inputsModel.index(i, 0, QtCore.QModelIndex()) + included = includes(indices, index) + newIndex = index.row() + includedInc = -1 if up else 1 + excludedInc = -1 * includedInc * selectionSizes[sizeIndex] + if included: + newIndex = newIndex + includedInc + includedList.append(newIndex) + elif ( + not included + and newIndex >= minRow + includedInc + and newIndex <= maxRow + includedInc + ): + newIndex = newIndex + excludedInc + if sizeIndex < len(selectionSizes) - 1: + sizeIndex += 1 + newNodes[newIndex] = nodeFromIndex(index, self._inputsModel) + + try: + setInputs(commands.viewNode(), newNodes) + self.selectInputsRange(includedList) + except Exception as exc: + print("FAILED: %s\n" % exc) + + commands.redraw() # don't think this is necessary + + def sortInputs(self, up, checked): + if self._inputOrderLock or commands.viewNode() is None: + return + + node = commands.viewNode() + inputs = nodeInputs(node) + + sorted_ = [] + + for i in range(len(inputs)): + source = inputs[i] + media = extra_commands.uiName(source) + + found = False + tmp = [] + + for s in sorted_: + order = _compare(media, extra_commands.uiName(s)) + if found or (up and order > 0) or (not up and order < 0): + # while s comes before item, add s to the list + tmp.append(s) + else: + # insert item before this source + tmp.append(source) + tmp.append(s) + found = True + if not found: + # stick on the end + sorted_.append(source) + else: + sorted_ = tmp + + if not setInputs(node, sorted_): + self.updateInputs(node) + + if commands.nodeType(node) == "RVFolderGroup": + for i in range(len(sorted_)): + n = sorted_[i] + setSortKeyInParent(n, node, i) + self.updateTree() + + def rebuildInputsFromList(self): + if self._inputOrderLock or commands.viewNode() is None: + return + + num = self._inputsModel.rowCount(QtCore.QModelIndex()) + vnode = commands.viewNode() + + nodes = [] + + self._disableUpdates = True + + for row in range(num): + item = self._inputsModel.item(row, 0) + + if item is not None: + node = itemNode(item) + + try: + if itemIsSubComponent(item): + hash = itemSubComponentHash(item) + cnode, folder = self.componentAndFolderNodeFromHash(hash, node) + + if cnode is None: + fullName = itemSubComponentValue(item) + filename = itemSubComponentMedia(item) + subType = itemSubComponentType(item) + pval = subComponentPropValue(item) + snode = self.newSubComponentNode( + hash, subType, filename, fullName, pval, node, folder + ) + + nodes.append(snode) + else: + nodes.append(cnode) + else: + nodes.append(node) + except Exception: + pass + + commands.setViewNode(vnode) + self._disableUpdates = False + if not setInputs(vnode, nodes): + self.updateInputs(vnode) + + def inputRowsRemovedSlot(self, parent, start, end): + if self._inputOrderLock or commands.viewNode() is None: + return + self._lazySetInputsTimer.start(100) + + def printRows(self): + num = self._inputsModel.rowCount(QtCore.QModelIndex()) + + print("-\n") + for row in range(num): + item = self._inputsModel.item(row, 0) + print("row %d -> %s\n" % (row, "nil" if item is None else item.text())) + + def showRows(self, event): + self.printRows() + + def inputRowsInsertedSlot(self, parent, start, end): + if self._inputOrderLock or commands.viewNode() is None: + return + self._lazySetInputsTimer.start(100) + + def inputsDeleteSlot(self, checked): + if self._inputOrderLock or commands.viewNode() is None: + return + + indices = self._inputsView.selectionModel().selectedIndexes() + inputs = nodeInputs(commands.viewNode()) + + newNodes = [] + + for i in range(len(inputs)): + index = self._inputsModel.index(i, 0, QtCore.QModelIndex()) + + if not includes(indices, index): + newNodes.append(nodeFromIndex(index, self._inputsModel)) + + try: + setInputs(commands.viewNode(), newNodes) + except Exception as exc: + print("FAILED: %s\n" % exc) + + commands.redraw() # don't think this is necessary + + def saveTabState(self): + prop = "%s.sm_state.tab" % commands.viewNode() + setIntProp(prop, self._tabWidget.currentIndex()) + + def restoreTabState(self): + vnode = commands.viewNode() + + if vnode is not None: + prop = "%s.sm_state.tab" % vnode + + if commands.propertyExists(prop): + state = commands.getIntProperty(prop)[0] + self._tabWidget.setCurrentIndex(state) + elif commands.nodeType(vnode) == "RVSourceGroup": + self._tabWidget.setCurrentIndex(1) + + def tabChangeSlot(self, index): + self.saveTabState() + + def navButtonClicked(self, which, checked): + self._disableUpdates = True + + try: + if which == "next" and commands.nextViewNode() is not None: + commands.setViewNode(commands.nextViewNode()) + if which == "prev" and commands.previousViewNode() is not None: + commands.setViewNode(commands.previousViewNode()) + except Exception: + pass + + self._disableUpdates = False + self.updateInputs(commands.viewNode()) + + def mainWinVisTimeout(self): + # + # Don't adjust mode activity whcn main window + # is minimized. + # + if qtutils.sessionWindow().isMinimized(): + return + + if not self._dockWidget.isVisible() and self._active: + self.toggle() + if self._dockWidget.isVisible() and not self._active: + self.toggle() + + def visibilityChanged(self, vis): + # + # We want to avoid shutting down the mode when the window + # is minimized, but the min status is not correct unless + # we ask a little later ;-) + # + self._mainWinVisTimer.start(0) + + def configSlot(self, checked, onstart, show): + commands.writeSettings("SessionManager", "showOnStartup", onstart) + commands.writeSettings("Tools", "show_session_manager", show) + + def togglePreviews(self, checked): + self._previewsEnabled = checked + commands.writeSettings("SessionManager", "previewsEnabled", checked) + if not checked: + commands.sendInternalEvent("session-manager-previews-disabled", "") + else: + commands.sendInternalEvent("session-manager-previews-enabled", "") + self.updateTree() + + def __init__(self, name): + rv.rvtypes.MinorMode.__init__(self) + + self._darkUI = True + self._inputOrderLock = False + self._editors = [] + self._quitting = False + self._disableUpdates = False + self._srcNodeKeys = [] + self._grpNodeValues = [] + + self._css = None + self._createImageDialog = None + self._newNodeDialog = None + self._nodeTypeCombo = None + self._viewContextMenu = None + self._viewContextMenuActions = [] + self._cidName = "" + self._cidFMTSpec = "" + self._cidColor = QtGui.QColor(0, 0, 0, 255) + self._selectedSubComp = QtGui.QColor() + + previewsEnv = os.environ.get("RV_SESSION_MANAGER_USE_THUMBNAILS", None) + if previewsEnv is not None and previewsEnv == "0": + self._previewsEnabled = False + else: + self._previewsEnabled = bool( + commands.readSettings("SessionManager", "previewsEnabled", True) + ) + + self._progressiveLoadingInProgress = commands.loadTotal() != 0 + + self.init( + name, + [ + ("new-node", self.updateTreeEvent, "New user node"), + ("source-modified", self.updateTreeEvent, "New source media"), + ("source-group-complete", self.updateTreeEvent, "Source group complete"), + ( + "before-progressive-loading", + self.beforeProgressiveLoading, + "before loading", + ), + ( + "after-progressive-loading", + self.afterProgressiveLoading, + "after loading", + ), + ("after-node-delete", self.updateTreeEvent, "Node deleted"), + ("after-clear-session", self.updateTreeEvent, "Session Cleared"), + ("after-graph-view-change", self.afterGraphViewChange, "Update session UI"), + ( + "before-graph-view-change", + self.beforeGraphViewChange, + "Update session UI", + ), + ("graph-node-inputs-changed", self.nodeInputsChanged, "Update session UI"), + ("graph-state-change", self.propertyChanged, "Maybe update session UI"), + ("key-down--@", self.showRows, "show'em"), + ( + "before-session-deletion", + self.enterQuittingState, + "Store quitting before session goes away", + ), + ( + "view-edit-mode-activated", + self.viewEditModeActivated, + "Per-view edit mode activated, load UI", + ), + ( + "event-category-state-changed", + self.onCategoryStateChanged, + "Category state changed", + ), + ( + "session-manager-preview-available", + self.updateNodePreviewEvent, + "Update preview widget for completed thumbnail", + ), + ( + "session-manager-selected-nodes", + self.selectedNodesEvent, + "Report the tree selection to other packages", + ), + ], + None, + None, + ) + + # + # Every widget below is parented to the session window, so the wrapper for + # it has to outlive them: dropping the last Python reference to a wrapper + # obtained from wrapInstance() takes the widgets parented to it down with + # it, and the panel then raises "Internal C++ object already deleted". + # + self._mainWindow = qtutils.sessionWindow() + m = self._mainWindow + + self._dockWidget = QtWidgets.QDockWidget("Session Manager", m, Qt.Widget) + self._baseWidget = loadUIFile(self.auxFilePath("session_manager.ui"), m) + self._treeViewBase = self._baseWidget.findChild(QtWidgets.QWidget, "treeView") + self._addButton = self._baseWidget.findChild(QtWidgets.QToolButton, "addButton") + self._folderButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "folderButton" + ) + self._deleteButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "deleteButton" + ) + self._configButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "configButton" + ) + self._editViewInfoButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "renameButton" + ) + self._homeButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "selectCurrentButton" + ) + self._inputsViewBase = self._baseWidget.findChild( + QtWidgets.QWidget, "inputsListView" + ) + self._tabWidget = self._baseWidget.findChild(QtWidgets.QTabWidget, "tabWidget") + self._orderUpButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "orderUpButton" + ) + self._orderDownButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "orderDownButton" + ) + self._sortAscButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "sortAscButton" + ) + self._sortDescButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "sortDescButton" + ) + self._inputsDeleteButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "inputsDeleteButton" + ) + self._uiTreeWidget = self._baseWidget.findChild( + QtWidgets.QTreeWidget, "uiTreeWidget" + ) + self._splitter = self._baseWidget.findChild(QtWidgets.QSplitter, "splitter") + self._viewLabel = self._baseWidget.findChild(QtWidgets.QLabel, "viewLabel") + self._prevViewButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "prevViewButton" + ) + self._nextViewButton = self._baseWidget.findChild( + QtWidgets.QToolButton, "nextViewButton" + ) + + self._lazySetInputsTimer = QtCore.QTimer(self._dockWidget) + self._lazyUpdateTimer = QtCore.QTimer(self._dockWidget) + self._mainWinVisTimer = QtCore.QTimer(self._dockWidget) + + self._lazySetInputsTimer.setSingleShot(True) + self._lazyUpdateTimer.setSingleShot(True) + self._mainWinVisTimer.setSingleShot(True) + + vbox = QtWidgets.QVBoxLayout(self._treeViewBase) + vbox.setContentsMargins(0, 0, 0, 0) + self._viewTreeView = NodeTreeView(self._treeViewBase) + vbox.addWidget(self._viewTreeView) + + ivbox = QtWidgets.QVBoxLayout(self._inputsViewBase) + ivbox.setContentsMargins(0, 0, 0, 0) + self._inputsView = InputsView( + self._viewTreeView, self._inputsViewBase, self.updateTree + ) + ivbox.addWidget(self._inputsView) + self._inputsView.setObjectName("inputsViewList") + + if self._css is not None: + self._baseWidget.setStyleSheet(self._css) + self._dockWidget.setWidget(self._baseWidget) + self._dockWidget.setTitleBarWidget( + self._baseWidget.findChild(QtWidgets.QWidget, "navPanel") + ) + self._dockWidget.setObjectName(name) + self._eventFilter = EventFilter(qtutils.sessionWindow()) + self._dockWidget.installEventFilter(self._eventFilter) + + self._viewModel = NodeModel(m) + self._inputsModel = QtGui.QStandardItemModel(m) + + self._viewTreeView._viewModel = self._viewModel + + self._viewModel.setHorizontalHeaderLabels(["Name", "*", "*"]) + self._viewTreeView.header().setMinimumSectionSize(-1) + + self._viewTreeView.setModel(self._viewModel) + self._viewTreeView.setDragEnabled(True) + self._viewTreeView.setAcceptDrops(True) + self._viewTreeView.setDropIndicatorShown(True) + self._viewTreeView.setHeaderHidden(False) + self._viewTreeView.setSelectionMode( + QtWidgets.QAbstractItemView.ExtendedSelection + ) + self._viewTreeView.setEditTriggers(QtWidgets.QAbstractItemView.EditKeyPressed) + self._viewTreeView.setContextMenuPolicy(Qt.CustomContextMenu) + self._viewTreeView.setDragDropMode(QtWidgets.QAbstractItemView.DragDrop) + self._viewTreeView.setDefaultDropAction(Qt.MoveAction) + self._viewTreeView.setExpandsOnDoubleClick(False) + self._viewTreeView.setIndentation(TREE_VIEW_INDENTATION) + + self._inputsView.setModel(self._inputsModel) + self._inputsView.setDragEnabled(True) + self._inputsView.setAcceptDrops(True) + self._inputsView.setSelectionMode(QtWidgets.QAbstractItemView.ExtendedSelection) + self._inputsView.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows) + self._inputsView.setDefaultDropAction(Qt.MoveAction) + self._inputsView.setDropIndicatorShown(True) + self._inputsView.setDragDropMode(QtWidgets.QAbstractItemView.DragDrop) + self._inputsView.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers) + + m.addDockWidget(Qt.LeftDockWidgetArea, self._dockWidget) + + addAction = QtGui.QAction( + self.auxIcon("add_48x48.png", True), "Create View", self._addButton + ) + folderAction = QtGui.QAction( + self.auxIcon("foldr_48x48.png", True), "Create Folder", self._folderButton + ) + deleteAction = QtGui.QAction( + self.auxIcon("trash_48x48.png", True), "Delete View", self._deleteButton + ) + configAction = QtGui.QAction( + self.auxIcon("confg_48x48.png", True), "Configure", self._configButton + ) + editInfoAction = QtGui.QAction( + self.auxIcon("sinfo_48x48.png", True), + "Edit View Info", + self._editViewInfoButton, + ) + orderUpAction = QtGui.QAction( + self.auxIcon("up_48x48.png", True), + "Move Input Higher in List", + self._orderUpButton, + ) + orderDownAction = QtGui.QAction( + self.auxIcon("down_48x48.png", True), + "Move Input Lower in List", + self._orderDownButton, + ) + sortAscAction = QtGui.QAction("A-Z", self._sortAscButton) + sortDescAction = QtGui.QAction("Z-A", self._sortDescButton) + inputsDeleteAction = QtGui.QAction( + self.auxIcon("trash_48x48.png", True), + "Delete Input", + self._inputsDeleteButton, + ) + prevViewAction = QtGui.QAction( + self.auxIcon("back_48x48.png", True), "Previous View", self._prevViewButton + ) + nextViewAction = QtGui.QAction( + self.auxIcon("forwd_48x48.png", True), "Next View", self._nextViewButton + ) + homeAction = QtGui.QAction( + self.auxIcon("home_48x48.png", True), + "Select Current View", + self._homeButton, + ) + + # + # Cache all the icons ahead of time (this was seriously + # slowing things down before). Put the icons in *reverse* + # order of likelyhood they'll appear. i.e. first in list is + # least likely to be needed, last is most likely. + # + + self._typeIcons = [] + + for t in [ + ("RVSourceGroup", "videofile_48x48.png"), + ("RVImageSource", "videofile_48x48.png"), + ("RVSwitchGroup", "shuffle_48x48.png"), + ("RVRetimeGroup", "tempo_48x48.png"), + ("RVLayoutGroup", "lgicn_48x48.png"), + ("RVStackGroup", "photoalbum_48x48.png"), + ("RVSequenceGroup", "playlist_48x48.png"), + ("RVFolderGroup", "foldr_48x48.png"), + ("RVFileSource", "videofile_48x48.png"), + ]: + self._typeIcons.append((t[0], self.auxIcon(t[1], True))) + + self._viewIcon = self.auxIcon("view.png", True) + self._videoIcon = self.auxIcon("video_48x48.png", True) + self._channelIcon = self.auxIcon("channel.png", True) + self._layerIcon = self.auxIcon("layer.png", True) + self._unknownTypeIcon = self.auxIcon("new_48x48.png", True) + self._fallbackSourceIcon = QtGui.QIcon( + self.auxFilePath("fallback_thumbnail.png") + ) + + self._addButton.setDefaultAction(addAction) + self._deleteButton.setDefaultAction(deleteAction) + self._editViewInfoButton.setDefaultAction(editInfoAction) + self._addButton.setPopupMode(QtWidgets.QToolButton.InstantPopup) + + self._configButton.setDefaultAction(configAction) + self._configButton.setPopupMode(QtWidgets.QToolButton.InstantPopup) + + self._colorDialog = QtWidgets.QColorDialog(m) + self._colorDialog.setOption(QtWidgets.QColorDialog.ShowAlphaChannel, False) + + self._orderUpButton.setDefaultAction(orderUpAction) + self._orderDownButton.setDefaultAction(orderDownAction) + self._sortAscButton.setDefaultAction(sortAscAction) + self._sortDescButton.setDefaultAction(sortDescAction) + self._inputsDeleteButton.setDefaultAction(inputsDeleteAction) + + self._prevViewButton.setDefaultAction(prevViewAction) + self._nextViewButton.setDefaultAction(nextViewAction) + self._homeButton.setDefaultAction(homeAction) + + addMenu = QtWidgets.QMenu("New Viewable", self._addButton) + addSequence = addMenu.addAction( + self.auxIcon("playlist_48x48.png", True), "Sequence" + ) + addStack = addMenu.addAction( + self.auxIcon("photoalbum_48x48.png", True), "Stack" + ) + addSwitch = addMenu.addAction(self.auxIcon("shuffle_48x48.png", True), "Switch") + addFolder = addMenu.addAction(self.auxIcon("foldr_48x48.png", True), "Folder") + addLayout = addMenu.addAction(self.auxIcon("lgicn_48x48.png", True), "Layout") + addRetime = addMenu.addAction(self.auxIcon("tempo_48x48.png", True), "Retime") + + addColorize = None + addOCIO = None + addDynamic = None + addUserNode = None + + # + # For now, remove the rv/rvsdi/rvx dependency here. Hide Dynamic node from everyone. + # + if True or commands.shortAppName() == "rvsdi" or commands.shortAppName() == "rvx": + addColorize = addMenu.addAction(self.auxIcon("new_48x48.png", True), "Color") + addOCIO = addMenu.addAction(self.auxIcon("new_48x48.png", True), "OCIO") + if os.environ.get("RV_ENABLE_DYNAMIC_NODE", None) is not None: + addDynamic = addMenu.addAction( + self.auxIcon("new_48x48.png", True), "Dynamic" + ) + addUserNode = addMenu.addAction( + self.auxIcon("new_48x48.png", True), "New Node by Type..." + ) + + addMenu.addSeparator() + addSRGBCChart = addMenu.addAction( + self.auxIcon("colorchart_48x48.png", True), "SRGB Color Chart..." + ) + addACESCChart = addMenu.addAction( + self.auxIcon("colorchart_48x48.png", True), "ACES Color Chart..." + ) + addCBars = addMenu.addAction( + self.auxIcon("ntscbars_48x48.png", True), "Color Bars..." + ) + addBlack = addMenu.addAction(self.auxIcon("video_48x48.png", True), "Black...") + addColor = addMenu.addAction(self.auxIcon("video_48x48.png", True), "Color...") + addBlank = addMenu.addAction(self.auxIcon("video_48x48.png", True), "Blank...") + + menuActions = [ + (addStack, "RVStackGroup"), + (addFolder, "RVFolderGroup"), + (addLayout, "RVLayoutGroup"), + (addSequence, "RVSequenceGroup"), + (addRetime, "RVRetimeGroup"), + (addSwitch, "RVSwitchGroup"), + (addCBars, "smptebars,%s.movieproc"), + (addSRGBCChart, "srgbcolorchart,%s.movieproc"), + (addACESCChart, "acescolorchart,%s.movieproc"), + (addBlack, "black,%s.movieproc"), + (addColor, "solid,%s.movieproc"), + (addBlank, "blank,%s.movieproc"), + ] + + if True or commands.shortAppName() == "rvsdi" or commands.shortAppName() == "rvx": + if os.environ.get("RV_ENABLE_DYNAMIC_NODE", None) is not None: + menuActions = [ + (addStack, "RVStackGroup"), + (addFolder, "RVFolderGroup"), + (addLayout, "RVLayoutGroup"), + (addSequence, "RVSequenceGroup"), + (addRetime, "RVRetimeGroup"), + (addSwitch, "RVSwitchGroup"), + (addColorize, "RVColor"), + (addOCIO, "RVOCIO"), + (addDynamic, "Dynamic"), + (addUserNode, ""), + (addSRGBCChart, "srgbcolorchart,%s.movieproc"), + (addACESCChart, "acescolorchart,%s.movieproc"), + (addCBars, "smptebars,%s.movieproc"), + (addBlack, "black,%s.movieproc"), + (addColor, "solid,%s.movieproc"), + (addBlank, "blank,%s.movieproc"), + ] + else: + menuActions = [ + (addStack, "RVStackGroup"), + (addFolder, "RVFolderGroup"), + (addLayout, "RVLayoutGroup"), + (addSequence, "RVSequenceGroup"), + (addRetime, "RVRetimeGroup"), + (addSwitch, "RVSwitchGroup"), + (addColorize, "RVColor"), + (addOCIO, "RVOCIO"), + (addUserNode, ""), + (addSRGBCChart, "srgbcolorchart,%s.movieproc"), + (addACESCChart, "acescolorchart,%s.movieproc"), + (addCBars, "smptebars,%s.movieproc"), + (addBlack, "black,%s.movieproc"), + (addColor, "solid,%s.movieproc"), + (addBlank, "blank,%s.movieproc"), + ] + + self._addButton.setMenu(addMenu) + self._addButton.setArrowType(Qt.NoArrow) + self._createMenu = addMenu + + folderMenu = QtWidgets.QMenu("New Folder", self._folderButton) + newFolderAction = folderMenu.addAction("Empty Folder") + newFolder2Action = folderMenu.addAction("From Selection") + newFolder3Action = folderMenu.addAction("From Copy of Selection") + + self._folderButton.setDefaultAction(folderAction) + self._folderButton.setMenu(folderMenu) + self._folderButton.setArrowType(Qt.NoArrow) + self._folderButton.setPopupMode(QtWidgets.QToolButton.InstantPopup) + self._folderMenu = folderMenu + + configMenu = QtWidgets.QMenu("Config", self._configButton) + configAlwaysOn = configMenu.addAction("Always Show at Start Up") + configNeverOn = configMenu.addAction("Never Show at Start Up") + configLastOn = configMenu.addAction("Restore Last State at Start Up") + configGroup = QtGui.QActionGroup(self._configButton) + + for a in [configAlwaysOn, configNeverOn, configLastOn]: + a.setCheckable(True) + configGroup.addAction(a) + + configMenu.addSeparator() + previewToggle = configMenu.addAction("Show Source Previews") + + previewToggle.setCheckable(True) + previewToggle.setChecked(self._previewsEnabled) + + if previewsEnv is not None and previewsEnv == "0": + previewToggle.setEnabled(False) + + self._configButton.setMenu(configMenu) + + try: + configState = str( + commands.readSettings("SessionManager", "showOnStartup", "no") + ) + + if configState == "yes": + configAlwaysOn.setChecked(True) + elif configState == "last": + configLastOn.setChecked(True) + else: + configNeverOn.setChecked(True) + except Exception: + pass + + for action, protocol in menuActions: + action.triggered.connect( + lambda checked=False, p=protocol: self.addThingSlot(checked, p) + ) + + self._viewContextMenuActions = [deleteAction, editInfoAction, homeAction] + + homeAction.triggered.connect(self.selectCurrentViewSlot) + deleteAction.triggered.connect(self.deleteViewableSlot) + editInfoAction.triggered.connect(self.editViewInfoSlot) + orderUpAction.triggered.connect( + lambda checked=False: self.reorderSelected(True, checked) + ) + orderDownAction.triggered.connect( + lambda checked=False: self.reorderSelected(False, checked) + ) + sortAscAction.triggered.connect( + lambda checked=False: self.sortInputs(True, checked) + ) + sortDescAction.triggered.connect( + lambda checked=False: self.sortInputs(False, checked) + ) + inputsDeleteAction.triggered.connect(self.inputsDeleteSlot) + prevViewAction.triggered.connect( + lambda checked=False: self.navButtonClicked("prev", checked) + ) + nextViewAction.triggered.connect( + lambda checked=False: self.navButtonClicked("next", checked) + ) + self._tabWidget.currentChanged.connect(self.tabChangeSlot) + self._inputsModel.rowsRemoved.connect(self.inputRowsRemovedSlot) + self._inputsModel.rowsInserted.connect(self.inputRowsInsertedSlot) + self._lazySetInputsTimer.timeout.connect(self.rebuildInputsFromList) + self._lazyUpdateTimer.timeout.connect(self.updateTree) + self._mainWinVisTimer.timeout.connect(self.mainWinVisTimeout) + self._colorDialog.currentColorChanged.connect(self.newColorSlot) + self._splitter.splitterMoved.connect(self.splitterMoved) + configAlwaysOn.triggered.connect( + lambda checked=False: self.configSlot(checked, "yes", True) + ) + configNeverOn.triggered.connect( + lambda checked=False: self.configSlot(checked, "no", False) + ) + configLastOn.triggered.connect( + lambda checked=False: self.configSlot(checked, "last", True) + ) + previewToggle.toggled.connect(self.togglePreviews) + self._viewModel.itemChanged.connect(self.viewItemChanged) + self._viewTreeView.expanded.connect( + lambda index: self.setItemExpandedState(index, 1) + ) + self._viewTreeView.collapsed.connect( + lambda index: self.setItemExpandedState(index, 0) + ) + self._viewTreeView.customContextMenuRequested.connect(self.viewContextMenuSlot) + self._viewTreeView.doubleClicked.connect( + lambda index: self.viewByIndex(index, self._viewModel) + ) + self._viewTreeView.pressed.connect( + lambda index: self.itemPressed(index, self._viewModel) + ) + self._inputsView.doubleClicked.connect( + lambda index: self.viewByIndex(index, self._inputsModel) + ) + newFolderAction.triggered.connect( + lambda checked=False: self.newFolderSlot(checked, 1) + ) + newFolder2Action.triggered.connect( + lambda checked=False: self.newFolderSlot(checked, 2) + ) + newFolder3Action.triggered.connect( + lambda checked=False: self.newFolderSlot(checked, 3) + ) + + # + # Create the props on the display node we'll use + # + + self.updateTree() + + self._dockWidget.show() + m.show() + + # The Mu original records itself in the Mu State (state.sessionManager) for + # its sibling modes to find; the field is typed as the Mu class, so a Python + # instance cannot be stored there. theMode() below serves the same purpose. + global _theMode + _theMode = self + + self._dockWidget.visibilityChanged.connect(self.visibilityChanged) + + self.updateNavUI() + + +_theMode = None + + +def createMode(): + return SessionManagerMode("session_manager") + + +def theMode(): + return _theMode + + +def selectedNodeLines(): + """The tree selection as one node name per line, for Mu callers. + + Mu packages used to hold the mode object and call selectedNodes() on it, which + worked whether or not the panel was open, because the tree view exists from the + constructor onward. An internal event cannot reproduce that: RV only dispatches + events to *active* modes, and session_manager is `load: delay`, so a closed panel + would report an empty selection and silently change those callers' menu states. + + This is reachable through Mu's python module for as long as the mode is + constructed, which restores the original semantics. Returns "" when the Python + implementation is not the one loaded, so callers fall back to the event. + """ + mode = theMode() + + if mode is None: + return "" + + return "\n".join(mode.selectedNodes()) diff --git a/src/plugins/rv-packages/session_manager/transform_manip.py b/src/plugins/rv-packages/session_manager/transform_manip.py new file mode 100644 index 000000000..10c51b90c --- /dev/null +++ b/src/plugins/rv-packages/session_manager/transform_manip.py @@ -0,0 +1,579 @@ +# +# Copyright (C) 2023 Autodesk, Inc. All Rights Reserved. +# +# SPDX-License-Identifier: Apache-2.0 +# +"""2D transform manip — Python port of transform_manip.mu. + +Method and function names follow the Mu original rather than PEP 8 so the two can +be read side by side, and so each Mu method maps to one Python method. +""" +import math + +import rv.commands as commands +import rv.rvtypes + +from PySide6.QtCore import Qt + +from session_manager import menuItem, setFloatProp, setStringProp + +from OpenGL.GL import * +from OpenGL.GLU import * + +# rvui.globalConfig bg and fg. The Mu Configuration object has no Python binding and +# neither entry is reassigned at runtime. +CONFIG_BG = (0.0, 0.0, 0.0, 0.75) +CONFIG_FG = (0.75, 0.75, 0.75, 1.0) + +NoControl = "NoControl" +FreeTranslation = "FreeTranslation" +TopLeftCorner = "TopLeftCorner" +TopRightCorner = "TopRightCorner" +BotLeftCorner = "BotLeftCorner" +BotRightCorner = "BotRightCorner" + + +def _add(a, b): + return (a[0] + b[0], a[1] + b[1]) + + +def _sub(a, b): + return (a[0] - b[0], a[1] - b[1]) + + +def _scale(a, s): + return (a[0] * s, a[1] * s) + + +def dot(a, b): + return a[0] * b[0] + a[1] * b[1] + + +def mag(a): + return math.sqrt(a[0] * a[0] + a[1] * a[1]) + + +def normalize(a): + return _scale(a, 1.0 / mag(a)) + + +def _glVertex(v): + glVertex2f(v[0], v[1]) + + +def setupProjection(w, h, vflip=False): + """glyph.setupProjection; the Mu glyph module has no Python binding.""" + glMatrixMode(GL_PROJECTION) + glLoadIdentity() + if vflip: + gluOrtho2D(0.0, w - 1, h - 1, 0.0) + else: + gluOrtho2D(0.0, w - 1, 0.0, h - 1) + + glMatrixMode(GL_MODELVIEW) + glLoadIdentity() + + +def drawCircleFan(x, y, w, start, end, ainc, outline=False): + a0 = start * math.pi * 2.0 + a1 = end * math.pi * 2.0 + + glBegin(GL_LINE_STRIP if outline else GL_TRIANGLE_FAN) + if not outline: + glVertex2f(x, y) + + a = a0 + while a < a1: + glVertex2f(math.sin(a) * w + x, math.cos(a) * w + y) + a += ainc + + glVertex2f(math.sin(a1) * w + x, math.cos(a1) * w + y) + glEnd() + + +def triangleGlyph(outline): + glBegin(GL_LINE_LOOP if outline else GL_TRIANGLES) + glVertex2f(-0.5, 0.0) + glVertex2f(0.5, -0.5) + glVertex2f(0.5, 0.5) + glEnd() + + +def circleGlyph(outline): + drawCircleFan(0.0, 0.0, 0.5, 0.0, 1.0, 0.3, outline) + + +def tformCircle(outline): + glMatrixMode(GL_MODELVIEW) + glPushMatrix() + glScalef(0.2333, 0.2333, 0.2333) + circleGlyph(outline) + glPopMatrix() + + +def tformTriangle(angle, outline): + glMatrixMode(GL_MODELVIEW) + glPushMatrix() + glRotatef(angle, 0.0, 0.0, 1.0) + glScalef(0.25, 0.25, 0.25) + glTranslatef(-1.3, 0.0, 0.0) + triangleGlyph(outline) + glPopMatrix() + + +def translateIconGlyph(outline): + tformCircle(outline) + + a = 0.0 + while a <= 360.0: + tformTriangle(a, outline) + a += 90.0 + + +def closestPointOnLine(p, a, b): + dir = normalize(_sub(b, a)) + u = dot(_sub(p, a), dir) + + return _add(_scale(dir, u), a) + + +def computeGC(corners): + gc = (0.0, 0.0) + for c in corners: + gc = _add(gc, c) + return _scale(gc, 1.0 / float(len(corners))) + + +def tagValue(tags, name): + for t in tags: + (n, v) = t + if n == name: + return v + + return None + + +def nodeAspect(node): + geom = commands.nodeImageGeometry(commands.viewNode(), commands.frame()) + pa = geom["pixelAspect"] + xps = pa if pa > 1.0 else 1.0 + yps = pa if pa < 1.0 else 1.0 + + return (geom["width"] * xps) / (geom["height"] / yps) + + +class EditNodePair(object): + def __init__(self, tformNode, inputNode): + self.tformNode = tformNode + self.inputNode = inputNode + + +class TransformManip(rv.rvtypes.MinorMode): + def editNode(self, name): + for enode in self._editNodes: + if enode.tformNode == name: + return enode + return None + + def activeImageIndex(self): + for i in commands.renderedImages(): + v = tagValue(i["tags"], "tmanip_state") + if v is not None and v != "": + return i["index"] + + return -1 + + def setManipState(self, p, value): + if p is not None: + if commands.nodeExists(p.tformNode): + setStringProp(p.tformNode + ".tag.tmanip_state", value) + + def control(self, index, event): + corners = commands.imageGeometryByIndex(index) + p = event.pointer() + gc = computeGC(corners) + + for c in corners: + v = _sub(p, c) + + if abs(v[0]) < 25 and abs(v[1]) < 25: + if c[0] < gc[0]: + return (TopLeftCorner if c[1] > gc[1] else BotLeftCorner, gc, c) + else: + return (TopRightCorner if c[1] > gc[1] else BotRightCorner, gc, c) + + return (FreeTranslation, gc, gc) + + # + # Cursor shapes are passed as .value rather than int(): PySide6 6.5 makes + # Qt.CursorShape a plain enum.Enum, so int() on one raises TypeError. Mu hands + # setCursor the enum directly and it arrives as an int. Same trap as + # Qt.CheckState in the checkbox slots. + # + def move(self, event): + last = self._currentEditNode + self._currentEditNode = None + self._control = NoControl + commands.setCursor(Qt.CursorShape.ArrowCursor.value) + + for p in commands.imagesAtPixel(event.pointer()): + if p["inside"]: + v = tagValue(p["tags"], "tmanip") + + if v is not None: + self._currentEditNode = self.editNode(v) + self.setManipState(self._currentEditNode, "hover") + (con, gc, corner) = self.control(p["index"], event) + self._control = con + self._gc = gc + self._corner = corner + + if self._control == TopRightCorner: + commands.setCursor(Qt.CursorShape.SizeBDiagCursor.value) + elif self._control == BotLeftCorner: + commands.setCursor(Qt.CursorShape.SizeBDiagCursor.value) + elif self._control == TopLeftCorner: + commands.setCursor(Qt.CursorShape.SizeFDiagCursor.value) + elif self._control == BotRightCorner: + commands.setCursor(Qt.CursorShape.SizeFDiagCursor.value) + elif self._control == FreeTranslation: + commands.setCursor(Qt.CursorShape.OpenHandCursor.value) + else: + commands.setCursor(Qt.CursorShape.WhatsThisCursor.value) + break + + if last is not self._currentEditNode: + if last is not None: + self.setManipState(last, "") + commands.redraw() + + event.reject() + + def push(self, event): + if self._currentEditNode is not None: + commands.setCursor(Qt.CursorShape.ClosedHandCursor.value) + self.setManipState(self._currentEditNode, "editing") + + if self.activeImageIndex() == -1: + return + + self._downPoint = event.pointer() + self._didDrag = False + self._editing = True + commands.redraw() + + def drag(self, event): + if self._currentEditNode is not None: + index = self.activeImageIndex() + commands.setCursor(Qt.CursorShape.ClosedHandCursor.value) + + if index == -1: + return + + tformNode = self._currentEditNode.tformNode + inputNode = self._currentEditNode.inputNode + transProp = "%s.transform.translate" % tformNode + scaleProp = "%s.transform.scale" % tformNode + trans = commands.getFloatProperty(transProp) + scale = commands.getFloatProperty(scaleProp) + corners = commands.imageGeometryByIndex(index) + a = corners[0] + b = corners[1] + c = corners[2] + d = corners[3] + pp = event.pointer() + dp = self._downPoint + ip = _sub(pp, dp) + ba = mag(_sub(b, a)) + da = mag(_sub(d, a)) + aspect = ba / da + dx = ip[0] / ba * scale[0] * aspect + dy = ip[1] / da * scale[1] + + if self._control == FreeTranslation: + setFloatProp(transProp, [trans[0] + dx, trans[1] + dy]) + else: + # + # The diagonal is only defined for a corner grab. control() + # returns (FreeTranslation, gc, gc) when the pointer is not near a + # corner, so _corner - _gc is exactly (0,0) on a free translation + # and normalize() would divide by zero — as would `/ downDist` + # right after, since a zero direction makes both distances 0. + # + # Mu computes all of this unconditionally (transform_manip.mu:225) + # and gets away with it: its float division yields inf/nan instead + # of raising, and the FreeTranslation branch only reads dx/dy, so + # the nans are never used. Python raises, so the same values have + # to be computed where they are actually needed. Corner drags are + # unaffected either way. + # + diagDir = normalize(_sub(self._corner, self._gc)) + diagDist = dot(_sub(pp, self._gc), diagDir) + downDist = dot(_sub(self._downPoint, self._gc), diagDir) + diff = diagDist - downDist + scl = (diagDist - diff / 2.0) / downDist + sv = _scale(diagDir, diff) + sdx = sv[0] / ba * scale[0] * aspect + sdy = sv[1] / da * scale[1] + + setFloatProp( + transProp, [trans[0] + sdx / 2.0, trans[1] + sdy / 2.0] + ) + newscale = max(scale[0] * scl, 0.01) + setFloatProp( + scaleProp, [newscale, scale[1] * newscale / scale[0]] + ) + + self._downPoint = pp + self._didDrag = True + commands.redraw() + + def release(self, event): + if self._editing: + self.setManipState(self._currentEditNode, "hover") + commands.setCursor(Qt.CursorShape.OpenHandCursor.value) + else: + commands.setCursor(Qt.CursorShape.ArrowCursor.value) + + self._didDrag = False + self._editing = False + + def resetAll(self, event): + for enode in self._editNodes: + tformNode = enode.tformNode + transProp = "%s.transform.translate" % tformNode + scaleProp = "%s.transform.scale" % tformNode + rotProp = "%s.transform.rotate" % tformNode + + setFloatProp(transProp, [0.0, 0.0]) + setFloatProp(scaleProp, [1.0, 1.0]) + setFloatProp(rotProp, [0.0]) + + commands.redraw() + + def fitAll(self, event): + aspect = nodeAspect(commands.viewNode()) + + for enode in self._editNodes: + tformNode = enode.tformNode + transProp = "%s.transform.translate" % tformNode + scaleProp = "%s.transform.scale" % tformNode + rotProp = "%s.transform.rotate" % tformNode + + inaspect = nodeAspect(tformNode) + s = aspect / inaspect + + setFloatProp(transProp, [0.0, 0.0]) + setFloatProp(scaleProp, [s, s]) + setFloatProp(rotProp, [0.0]) + + commands.redraw() + + def removeTags(self): + for x in self._editNodes: + node = x.tformNode + pmanip = node + ".tag.tmanip" + pstate = node + ".tag.tmanip_state" + + for p in [pmanip, pstate]: + if commands.propertyExists(p): + commands.deleteProperty(p) + + def findEditingNodes(self, setStates=True): + infos = commands.metaEvaluateClosestByType(commands.frame(), "RVTransform2D") + (ins, outs) = commands.nodeConnections(commands.viewNode(), False) + + self._editNodes = [] + + # happens when shutting down or deletion + if len(infos) != len(ins): + return + + for i in range(len(infos)): + info = infos[i] + pname = info["node"] + ".tag.tmanip" + sname = info["node"] + ".tag.tmanip_state" + + self._editNodes.append(EditNodePair(info["node"], ins[i])) + + if setStates or not commands.propertyExists(pname): + setStringProp(pname, info["node"]) + setStringProp(sname, "") + + def nodeInputsChanged(self, event): + node = event.contents() + vnode = commands.viewNode() + + # Don't set the node states in this case + if vnode is not None and node == vnode: + self.findEditingNodes(False) + + def afterGraphViewChange(self, event): + self.findEditingNodes() + event.reject() + + def beforeGraphViewChange(self, event): + self.removeTags() + event.reject() + + def activate(self): + rv.rvtypes.MinorMode.activate(self) + self.findEditingNodes() + + def deactivate(self): + rv.rvtypes.MinorMode.deactivate(self) + commands.setCursor(Qt.CursorShape.ArrowCursor.value) + self.removeTags() + + def menu(self): + return [ + ( + "Layout", + [ + ("_", None), + menuItem( + "Fit All Images", + "", + "viewmode_category", + self.fitAll, + lambda: commands.NeutralMenuState, + ), + menuItem( + "Reset All Manips", + "", + "viewmode_category", + self.resetAll, + lambda: commands.NeutralMenuState, + ), + ], + ) + ] + + def __init__(self): + rv.rvtypes.MinorMode.__init__(self) + + self._editNodes = [] + self._currentEditNode = None + self._control = NoControl + self._gc = (0.0, 0.0) + self._corner = (0.0, 0.0) + self._downPoint = (0.0, 0.0) + + self.init( + "transform_manip", + None, # no global + [ + ("pointer--move", self.move, "Search for Image"), + ("pointer-1--push", self.push, "Grab Tile"), + ("pointer-1--drag", self.drag, "Move/Scale Tile"), + ("pointer-1--release", self.release, ""), + ( + "graph-node-inputs-changed", + self.nodeInputsChanged, + "Update session UI", + ), + ("after-graph-view-change", self.afterGraphViewChange, "Update UI"), + ("before-graph-view-change", self.beforeGraphViewChange, "Update UI"), + ("stylus-pen--move", self.move, "Search for Nearest Edge"), + ("stylus-pen--push", self.push, "Move"), + ("stylus-pen--drag", self.drag, "Move"), + ("stylus-pen--release", self.release, ""), + ], + self.menu(), + # + # manip events must be processed nearly last, since + # they cover the screen. + # + "zza", + ) + + self._editing = False + self._didDrag = False + + def render(self, event): + if self._currentEditNode is None: + return + + domain = event.domain() + bg = CONFIG_BG + fg = CONFIG_FG + index = self.activeImageIndex() + + if index == -1: + return + + setupProjection(domain[0], domain[1], event.domainVerticalFlip()) + + try: + corners = commands.imageGeometryByIndex(index) + gc = computeGC(corners) + + self._gc = gc + glEnable(GL_BLEND) + glEnable(GL_LINE_SMOOTH) + glEnable(GL_POINT_SMOOTH) + glLineWidth(2.0) + + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) + + def drawCorners(corners, mult, width): + for i in range(len(corners)): + i0 = 3 if i == 0 else i - 1 + i1 = (i + 1) % 4 + c = corners[i] + c0 = corners[i0] + c1 = corners[i1] + m0 = mag(_sub(c0, c)) + m1 = mag(_sub(c1, c)) + dir0 = _scale(_sub(c0, c), 1.0 / m0) + dir1 = _scale(_sub(c1, c), 1.0 / m1) + nmult = 0.0 if (m1 / 2.0 < mult or m0 / 2.0 < mult) else mult + + glBegin(GL_LINES) + _glVertex(_add(c, _scale(dir0, nmult))) + _glVertex(_sub(c, _scale(normalize(dir0), width))) + _glVertex(_add(c, _scale(dir1, nmult))) + _glVertex(_sub(c, _scale(normalize(dir1), width))) + glEnd() + + glColor4f(1.0, 1.0, 1.0, 0.5) + glBegin(GL_LINE_LOOP) + for c in corners: + _glVertex(c) + glEnd() + + glColor4f(0.0, 0.0, 0.0, 0.5) + glLineWidth(8.0) + drawCorners(corners, 25, 0.0) + glLineWidth(6.0) + glColor4f(1.0, 1.0, 1.0, 0.5) + drawCorners(corners, 25, 0.0) + + glLineWidth(1.5) + + glPushMatrix() + glTranslatef(gc[0], gc[1], 0.0) + glScalef(25.0, 25.0, 25.0) + glColor4f(bg[0], bg[1], bg[2], bg[3] * 0.5) + circleGlyph(False) + circleGlyph(True) + glPopMatrix() + + glPushMatrix() + glTranslatef(gc[0], gc[1], 0.0) + glScalef(25.0, 25.0, 25.0) + glColor4f(fg[0], fg[1], fg[2], fg[3]) + translateIconGlyph(False) + glColor4f(fg[0] * 0.5, fg[1] * 0.5, fg[2] * 0.5, fg[3] * 0.5) + glLineWidth(1.0) + translateIconGlyph(True) + glPopMatrix() + + glDisable(GL_BLEND) + except Exception: + # ignore it + pass + + +def createMode(): + return TransformManip() diff --git a/src/test/golden/COVERAGE.template.md b/src/test/golden/COVERAGE.template.md new file mode 100644 index 000000000..6b0f4b969 --- /dev/null +++ b/src/test/golden/COVERAGE.template.md @@ -0,0 +1,54 @@ +# `` — Migration Coverage Contract + +**Purpose.** … + +**Source of truth.** … + +--- + +## Primary outcomes + +Fill this **first**, before the behavior inventory or scenarios. See +[`VERIFICATION.md` § Primary outcomes](./VERIFICATION.md#primary-outcomes-required-per-package). + +| # | User-visible outcome | Graph / property signal | Pixel discriminant | Scenario(s) | B | P | +|---|----------------------|-------------------------|--------------------|---------------|---|---| +| 1 | | | | | req | req if visible | + +User approval required on this table before capture. + +--- + +## File inventory + +… + +## Mu methods → Python unit tests + +**Mandatory gate 5.** Inventory every Mu method/function before the migration loop ends. +Record observed behavior from the Mu sources; map each row to a Python unit test (or chain +test). See [`VERIFICATION.md` § Gate 5](./VERIFICATION.md#gate-5--python-unit-tests). + +| Mu symbol | Kind | Recorded behavior (inputs → effects) | Python test | Status | +|-----------|------|--------------------------------------|-------------|--------| +| | fn / method / chain | | `unit/test_….py::…` | ⬜ | + +- **Chain tests:** use one row for `A → B → C` when isolated tests would be meaningless; + name the chain and list every Mu symbol it covers. +- **Status:** ✅ = test exists and passes; ⬜ = not yet covered. No ⬜ rows at migration done. + +## Verification method + +… + +## Behavior inventory + +… + +## Dropped + +… + +## Scenarios + +… diff --git a/src/test/golden/VERIFICATION.md b/src/test/golden/VERIFICATION.md new file mode 100644 index 000000000..bf49bf365 --- /dev/null +++ b/src/test/golden/VERIFICATION.md @@ -0,0 +1,556 @@ +# Golden-Test Verification Method (shared across all Mu→Python migrations) + +This is the **shared verification contract** for every package migrated from Mu to +Python via golden tests. Each package has its own inventory doc (e.g. +`session_manager/COVERAGE.md`) that plugs into the method defined here. Design rationale: +`docs/superpowers/specs/2026-07-21-mu-to-python-golden-tests-design.md`. + +The migration uses baseline behaviour and appearance from the Mu implementation. Refactored code will be compared with the baseline tests. + +``` +setup: [Mu package] --capture--> golden (committed) ┐ actual == golden → PASS + [Mu package] --run------> actual ┘ (proves determinism only) + +loop: [Mu package] --capture--> golden (already committed) + [Python port]--run------> actual actual == golden ? ← the real migration gate +``` + +A **passing scenario before a port exists means only that the Mu capture is reproducible +(Mu == Mu)** — it does not verify any migration. The real test is when the Python port is +toggled in (see [Mu/Python implementation toggle](#mupython-implementation-toggle)) +and the same scenarios run against it. + +--- + +## Mu/Python implementation toggle + +Both the Mu and Python sources for a package can live in the same build. RV normally loads **Mu first** when a `.mu` module exists; Python is only a fallback. For migration we need to run a **Python** mode against Mu-captured goldens without removing the Mu sources from the tree. + +### Environment variables + +`` is the RV mode name from `PACKAGE` / `rvload2` (extension stripped), +e.g. `session_manager`, `Stack_edit_mode`. + +| Variable | Example | Effect | +|---|---|---| +| `RV_MODE_IMPL_` | `RV_MODE_IMPL_session_manager=python` | Per-mode: `python` loads `.py`; `mu` forces the Mu implementation. | +| `RV_PREFER_PYTHON_MODES` | `RV_PREFER_PYTHON_MODES=session_manager,pyhello` | Comma-separated list of modes to load from Python. | + +Precedence: per-mode `RV_MODE_IMPL_*` → `RV_PREFER_PYTHON_MODES` → **Python when the +package ships a `.py` at all** → Mu. + +**The default is Python-first** (`mode_manager.mu`, `loadEntry`). Mu wins only where no +Python implementation exists, which is the direction the plugin set is moving: Mu modes +are retired package by package, and a ported package keeps its `.mu` source purely so +gate 4 can still run against it. `RV_MODE_IMPL_=mu` is how gate 4 asks for it. + +Whether a Python implementation exists is answered by `importlib.util.find_spec()` +rather than by attempting the import: the Mu binding for `PyImport_Import()` calls +`PyErr_Print()` on a missing module, and most modes are Mu-only, so probing by import +would print a traceback for each of them at every startup. The probe costs ~3.6 ms +across ~100 modes. + +### Harness + +```bash +# Mu (default): capture goldens, prove Mu determinism, re-baseline +python3 src/test/golden/harness/run_scenario.py \ + --scenario src/test/golden/session_manager/scenarios/tree_readonly.py \ + --out /tmp/tree_readonly --impl mu + +# Python: migration loop / port verification against committed goldens +python3 src/test/golden/harness/run_scenario.py \ + --scenario src/test/golden/session_manager/scenarios/tree_readonly.py \ + --out /tmp/tree_readonly --impl python +``` + +### Limits + +- Requires `.py` with a `createMode()` entry point on the Python path. + +--- + +## The six gates + +Every Mu→Python package migration must pass these **six mandatory gates**, in order. +Package orchestrators (`run_migration_loop.sh` / `run_migration_loop_mac.sh`) run them +sequentially; on any failure the script exits immediately. + +| Gate | Name | Command (orchestrator sets) | Pass criteria | +|------|------|-----------------------------|---------------| +| **0** | Runtime clean | `GATE=runtime IMPL=python` | Every scenario: no **new** runtime error signatures vs committed Mu `runtime_errors.txt` in the golden dir (`harness/runtime_log_check.py`). Same pre-existing RV noise as Mu is OK; regressions are not. Enforced on every `run_scenario.py` call when `--runtime-golden-dir` is passed. | +| **1** | Behavioral | `GATE=behavioral IMPL=python` | Every scenario: normalized `session.rv` matches committed golden (node graph, properties, connections). | +| **2** | Pixel | `GATE=pixel IMPL=python` | Every golden PNG: `rmsImageDiff -cmp -dmax 0` (see [Determinism requirements (gate 2)](#determinism-requirements-gate-2)). | +| **3** | Default launch | `GATE=default` | Every scenario: behavioral match with `--impl default` (no `RV_MODE_IMPL_*`; RV picks its shipped default). | +| **4** | Mu baseline integrity | `GATE=both IMPL=mu` | Every scenario: Mu implementation still matches committed goldens (harness and baselines sound). | +| **5** | Python unit tests | `harness/run_unit_tests.sh` | Every Mu method/function in the package has recorded behavior in `COVERAGE.md` and a corresponding passing Python unit test (or chain test — see [Gate 5](#gate-5--python-unit-tests)). | + +Gates **1** and **2** are complementary: behavioral catches logic the graph can see; pixel +catches layout/rendering it cannot. Some inventory items apply to one gate only (noted in +each package's `COVERAGE.md`). + +### Gate 0 — Runtime clean + +Mu capture writes `runtime_errors.txt` beside `session.rv` — one normalized +signature per line (tracebacks collapsed to stable ``Exception @ File …`` form). +`run_scenario.py` captures RV output to `$out/rv.log`. Exit code **5** if the run +introduces signatures **not** in that Mu baseline. Pre-existing RV/core noise +recorded at capture time passes; new package regressions do not. Missing +`runtime_errors.txt` means an empty baseline (strict until re-capture or +backfill). Event-handler exceptions do not fail the scenario script itself — this +gate catches them. + +### Gate 1 — Behavioral + +After a scripted scenario, `compare.py` diffs normalized GTO from `saveSession(sparse=False)` +against the committed golden. + +### Gate 2 — Pixel + +After a scripted scenario, panel/viewport PNGs are compared at `-dmax 0` under the pinned +headless path (Xvfb + software Mesa on Linux; real display + `golden-mac/` on macOS). + +### Gate 3 — Default launch + +Same behavioral check as gate 1, but scenarios run with `--impl default` so RV's normal +mode-selection path is exercised (not an explicit `RV_MODE_IMPL_*` override). + +This gate is only meaningful once the default actually selects the port. While the +default was Mu-first it passed by re-testing Mu, duplicating gate 4 and proving nothing +about the migration. With Python-first defaulting it exercises the same implementation a +user gets. + +### Gate 4 — Mu baseline integrity + +Full scenario pass with `IMPL=mu`. Confirms committed goldens and harness still match Mu; +never hand-edit `golden/` or `golden-mac/`. + +### Gate 5 — Python unit tests + +Golden scenarios prove end-to-end parity; gate 5 pins **method-level** behavior of the +Python port. Before or during the migration loop, the agent must: + +1. **Inventory every Mu method and function** in the package (`.mu` sources) — including + private helpers, Qt overrides, and mode callbacks. +2. **Record behavior** for each entry in `COVERAGE.md` § Mu methods → Python unit tests: + inputs, side effects, return values, graph/property mutations, and error paths observed + from the Mu implementation. +3. **Write Python unit tests** under `src/test/golden//unit/test_*.py` that assert + the same behavior on the Python port. + +**Chain tests:** when Mu logic is only meaningful as a call chain (A calls B calls C with +shared state), one unit test may cover the **chain** instead of three isolated tests — +as long as the chain is named in the inventory and every Mu entry in that chain is accounted +for (either its own test or a named chain test). + +**Pass criteria:** + +- `COVERAGE.md` Mu-methods table has no ⬜ rows (every Mu method/function mapped). +- `python3 -m pytest src/test/golden//unit/` exits 0 via + `harness/run_unit_tests.sh`. +- Each inventory row points at a `test_*.py` test (or chain test id). +- **The tests import the port.** A unit test that re-implements the logic it is + checking passes whether or not the port exists and pins nothing. The cheap way to + confirm a suite is real: move the ported module aside and re-run — gate 5 must fail. +- **Skips are not passes.** `run_unit_tests.sh` selects an interpreter that has the + same PySide6 the port runs against (RV's bundled one; override with + `GOLDEN_PYTHON`) and fails if zero tests execute, since a suite that skips itself + reports success just as loudly as one that works. + +**What to test:** pure logic, property formatting, parsing, state transitions, and helpers +that golden scenarios only exercise indirectly. Mock RV/Qt boundaries when needed — unit +tests must not require a live RV process unless unavoidable. + +**Platform baselines:** Mac output compares to `golden-mac/` only; Linux to `golden/` only +— never cross-compare ([Mac-native capture](#mac-native-capture)). + +**Conditional steps** (not gates): after gates 0–2 pass, the orchestrator may run [GUI +sanity](#gui-sanity-real-display) and the [code review agent](#code-review-agent). These +are required before calling migration done but are not numbered gates. + +--- + +Used by every package inventory. **A ✅ means the behavior is pinned by a committed golden +(the Mu ground truth is recorded) — NOT that it has been verified in the Python port.** + +- ✅ **covered** — a committed scenario exercises and pins this behavior. +- 🟡 **partial** — touched by a scenario but not fully pinned (e.g. rendered but not + interacted with). +- ⬜ **todo** — no scenario yet; listed in the package's scenario backlog. + +Behaviors with no deterministic graph/pixel outcome and no command equivalent (modal UI, +settings persistence, async previews, "event was sent") are **dropped** — removed from the +inventory rather than tracked — and noted in a short "Dropped" section per package. + +--- + +## Primary outcomes (required per package) + +**Scenario count is not thoroughness.** Before writing scenarios or capturing baselines, +every package's `COVERAGE.md` must open with a **Primary outcomes** section (see template +below). These are the 1–5 things a user would notice if the port broke — not chrome, +not "mode activated", not widget layout alone. + +An agent (or human) must fill this **before** the user approves the behavior inventory. +Do not capture Mu goldens until Primary outcomes rows are approved. + +### Rules + +1. **Name the discriminant.** For each primary outcome, state what changes in `session.rv` + *and* what should change on screen (if anything). Example: `request.imageComponent` + → layer name; viewer shows red vs green vs blue patches from `test_layers.exr`. + +2. **At least one scenario per primary outcome must pin the full outcome:** + - **Behavioral (B):** the graph property (or equivalent) must differ from the unselected + / default state in committed `session.rv` — not merely logged as a NOTE. + - **Pixel (P), when user-visible:** if the outcome changes what is displayed, capture + **two** viewport states (before/after or A vs B) that **must differ** in the image + region, not only in the margin/widget. + +3. **Fixtures must be used.** If you add a fixture with visually distinct variants (colored + layers, two clips, different resolutions), at least one primary-outcome scenario must + exercise that discriminant. Do not add discriminants "for manual testing only." + +4. **API vs click is not a substitute.** A command-API scenario may pin B; a real-click + scenario may pin the trigger. Neither alone satisfies a **user-visible** primary outcome + unless the click scenario also asserts B **and** (when applicable) P. Marking the + inventory row ✅ while the click golden still has the default/empty outcome is **not + allowed** — use 🟡 only until fixed, and do not call coverage complete. + +5. **Scenario script must fail capture if outcome wrong.** Use `assert` on properties before + `saveSession`. Do not commit baselines when the scenario logs "NOTE: outcome unchanged" + unless that unchanged state *is* the behavior under test. + +6. **Review checkpoint.** Before `./capture_golden*.sh`, the agent posts the Primary + outcomes table to the user. User must confirm each row has a planned scenario id that + satisfies rules 2–5. + +### COVERAGE.md template (copy into every new package) + +```markdown +## Primary outcomes + +| # | User-visible outcome | Graph / property signal | Pixel discriminant | Scenario(s) | B | P | +|---|----------------------|-------------------------|------------------|---------------|---|---| +| 1 | … | … | … (e.g. viewport A vs B) | … | req | req if visible | + +Rows must be ✅ (or justified 🟡) before migration is done. Secondary behaviors (menus, +shortcuts, dock/float chrome) are listed in the inventory tables below — they do not +replace primary outcomes. +``` + +--- + +## The harness + +Reusable across all packages; lives in `src/test/golden/harness/`. + +| File | Role | +|---|---| +| `run_scenario.py` | Launches RV headless (Xvfb + software Mesa), runs an in-process scenario, collects artifacts into an out dir. Captures RV log to `$out/rv.log`. With `--runtime-golden-dir`, fails on **new** runtime errors vs Mu `runtime_errors.txt`; use `--allow-runtime-errors` for Mu capture only. Pass `--impl mu\|python` and optional `--mode` / `--package`. Runs `golden_bootstrap.py` before each scenario. | +| `runtime_log_check.py` | Extracts normalized runtime signatures from `rv.log` / `traceback.txt`; delta-check vs golden `runtime_errors.txt`; `--write-baseline` for capture. | +| `golden_bootstrap.py` | In-RV pre-scenario hook: activates `source_setup` when `GOLDEN_SOURCE_SETUP=1` (set automatically for `tree_readonly.py`). | +| `migration_loop_agent_reminder.sh` | Sourced by `run_migration_loop*.sh` — prints agent read checklist; loop procedure in `mu-python-migration` skill §5. | +| `run_unit_tests.sh` | Gate 5 — runs `pytest` on `/unit/test_*.py`. | +| `compare.py` | Normalized GTO diff + `rmsImageDiff` pixel compare (gates 1 and 2). Exit 0 = PASS. | + +### Layout per package + +``` +src/test/golden/ + VERIFICATION.md # this file (shared method) + harness/ # shared run_scenario.py + compare.py + / + COVERAGE.md # package-specific behavior inventory + file list + scenarios/.py # in-RV scenarios (command-API driven; QTest for DnD) + run_migration_loop.sh # full migration loop orchestrator (Linux) + run_migration_loop_mac.sh + run_all_goldens.sh # scenario runners (orchestrator only; debug individually) + run_all_goldens_mac.sh + run_gui_sanity_gate.sh # conditional sanity step (orchestrator calls this) + capture_golden.sh # Mu baseline capture (Linux) + capture_golden_mac.sh # Mu baseline capture (macOS) + golden// # committed Linux baselines: session.rv, runtime_errors.txt (+ *.png) + golden-mac// # committed macOS baselines (separate pixel space) + unit/test_*.py # gate 5 — Python unit tests (one module or chain per Mu method/group) +``` + +Package-specific harness notes (fixtures, mode/package name mismatches, headless +caveats) belong in `COVERAGE.md`, not a separate doc — unless the package needs a +one-line pointer file, keep everything in COVERAGE. + +### Headless operational rules + +- Launch under `xvfb-run` with `LIBGL_ALWAYS_SOFTWARE=1`. **`QT_QPA_PLATFORM=offscreen` + segfaults RV** (its offscreen GL plugin needs GLX). Software Mesa under Xvfb is + deterministic given a pinned Mesa version. +- **RV redirects stdout to its own log** (`~/.local/share/rv.bin/rv.bin.log`). Scenarios + must write results to explicit files under `$GOLDEN_OUT`, not print them. +- **`close()` does not quit a windowless RV.** Every scenario ends by hard-exiting; the + runner wraps scenarios so they always `os._exit`. +- `-pyeval` runs **before** the Qt event loop, so widgets don't paint on their own — pump + the event loop (`QApplication.processEvents`) before `grab()`. +- **Immediate modes** (e.g. `source_setup`) load at `state-initialized` but start **inactive** + in headless runs; the harness re-activates them via `golden_bootstrap.py` when needed. + Set `GOLDEN_SOURCE_SETUP=1` to force color setup for all scenarios (default: off except + `tree_readonly.py`, which pins movieproc `sRGB2linear=1`). +- Scenarios drive the package via the `rv.commands` API (deterministic, headless-safe). + Drag-and-drop and other pointer interactions need synthetic Qt input events (`QTest`); + schedule those scenarios last. + +--- + +## Determinism requirements (gate 2) + +A hard `-dmax 0` gate is only safe if capture is bit-reproducible. + +| Source of nondeterminism | Fix | +|---|---| +| GPU/driver variance | Render through **software Mesa under Xvfb**, not the GPU; pin the Mesa version. | +| Async thumbnails/previews | Use media-free fixtures where possible; else quiesce on the relevant "available" event for every item before grabbing, **or** crop the nondeterministic region out of the PNG before diffing (`rmsImageDiff` has no ROI/mask). | +| Fonts / hinting | Pin a bundled font + fixed `fontconfig`; set a fixed `QT_FONT_DPI`. | +| HiDPI scaling | `QT_SCALE_FACTOR=1`, `QT_ENABLE_HIGHDPI_SCALING=0`, fixed widget size. | +| Animations / hover | Disable animations; command-API driving avoids stray focus/hover. | +| Xvfb / Mesa drift | Pin Xvfb screen geometry and Mesa version; capture goldens in the same container/path used to test. | + +Gate at `-dmax 0` (exact); loosen `dmax` only if residual noise is *observed*, and always +log `-m` (max error) so drift surfaces. Never loosen `dmax` to paper over flakiness — a +flaky gate trains the AI loop to hack the oracle. + +--- + +## GUI sanity (real display) + +`run_all_goldens.sh` above is deterministic, but it pins exactly one rendering path: Xvfb + +software Mesa. A port can pass that gate while being visibly broken under a real +GPU/compositor/font stack — or, less obviously, the reverse: differ from Mu only because of +environment noise the headless path can't see. `/run_gui_sanity_gate.sh` exists to +catch that class of regression by re-running the same scenarios against a real on-screen +display instead of Xvfb. + +This is a **required step, not a smoke test — and deliberately not a numbered gate.** It runs +two independent checks per scenario: + +- **Behavioral (node graph):** same as headless, always exact, HARD. A real-display run + producing a different node graph than the pinned golden is exactly as serious as it is + headlessly, and fails the script's exit code (the loop must iterate again). +- **Pixel (panel.png etc.):** no threshold, no verdict, via `compare.py --pixel-mode + report`. Real GPU/font/compositor rendering is never byte-identical to a golden captured + under Xvfb + software Mesa, so any fixed `dmax` is wrong in one of two directions: tight + enough to catch real regressions and it fails permanently on rendering noise (training + whoever/whatever runs the loop to ignore this gate as always-red, which is worse than not + having it); loose enough to stay quiet on noise and it can silently swallow a real + regression. Rather than guess a number, the gate prints quantitative info — RMS, the + max-diff pixel location and its two values, and both PNG paths — and leaves the judgment to + a **reviewer, human or AI**: does this look like ordinary rendering noise (anti-aliasing, + font hinting, GPU vs. software raster) or a real behavioral/visual regression? If judged + real, that's a failure for this iteration even though the script exited `0` — the AI + running the loop is expected to open the flagged PNGs (its own image-reading tool, or by + eye) and make that call itself, same as a human would eyeball a screenshot. + +Missing artifacts are still a hard fail either way — whether a PNG was produced at all is +objective (a broken port that can't find the widget never writes the file), only its pixel +*content* is left to review. + +`run_gui_sanity_gate.sh` prints a `NEEDS_AI_REVIEW:` line listing every scenario whose +behavioral gate passed but which has a pixel report attached, so the reviewer knows exactly +which scenarios to look at without re-reading the whole log. + +The script's final phase re-runs scenarios with `--impl default` on a real display. See +[Gate 3](#gate-3--default-launch); the orchestrator runs the authoritative Gate 3 pass via +`run_all_goldens*`. +--- + +## Mac-native capture + +Unlike [GUI sanity](#gui-sanity-real-display) (real display, but judged against Linux +`golden/` baselines, so pixel is report-only), macOS migration uses a **separate committed +baseline tree** `golden-mac/`: Mac output is compared only against Mac-captured baselines via +`run_all_goldens_mac.sh` / `capture_golden_mac.sh`. It does not replace `golden/` — the two +pixel spaces are not comparable and are never diffed against each other. + +**Why separate Mac baselines work**: + +- Two back-to-back captures of `tree_readonly` produced a byte-identical `session.rv` and a + byte-identical `panel.png` (`rmsImageDiff -m` reported no diff). Real-display rendering + *can* be bit-reproducible on a fixed machine/session, unlike the cross-machine/cross-GPU + case the GUI sanity gate exists for. +- The *behavioral* graph captured on Mac matched the already-committed Linux `golden/` + baseline exactly — the node graph is platform-independent, so in principle `golden-mac/`'s + behavioral half is redundant with `golden/`'s. It's still captured and stored per-scenario + in `golden-mac/` (not deduplicated against `golden/`) to keep each platform's baseline set + self-contained per the [layout convention](#the-harness). +- *Pixel* is not platform-independent and cannot be pinned once for both: the same scenario's + Mac capture came out at exactly 2x the Linux golden's raw pixel dimensions (Retina/HiDPI + backing-scale-factor), before any content is even compared. `golden-mac/` pixel baselines + are mandatory and separate. + +**Determinism is not assumed globally — it's enforced per capture machine.** +`capture_golden_mac.sh` runs every scenario twice back-to-back and refuses to commit a +baseline unless both runs are byte-identical (session.rv via `diff`, every PNG via +`rmsImageDiff -m` showing no max-diff line). A scenario that fails this check is skipped +with an error, never committed with a caveat — same "never loosen the gate to paper over +flakiness" principle as everywhere else in this doc, applied automatically at capture time +instead of discovered later. + +--- + +## Migration loop + +The migration loop runs [the six gates](#the-six-gates) via each package's orchestrator. +Package inventories (`COVERAGE.md`) hold behavior lists, fixtures, and package-specific +debug hints only. + +**Purpose:** the loop is meant to be **agent-driven** — start it with Cursor's `/loop` +command so the agent re-runs the migration prompt each tick until +[Definition of done](#definition-of-done) is satisfied. Example: + +```text +/loop 5m Migrate Mu→Python: read COVERAGE.md, fix Python port, run ./run_migration_loop_mac.sh, satisfy all six gates and Definition of done. +``` + +The shell orchestrator runs gates 0–5; the agent owns inventory, unit-test authoring, +sanity pixel review, and code review between ticks. + +### Orchestrator script + +Each package provides `run_migration_loop.sh` (Linux / `golden/`) and/or +`run_migration_loop_mac.sh` (macOS / `golden-mac/`). One invocation runs gates **0 → 5** +in order, then conditional GUI sanity and code-review steps if gates 0–2 passed. + +Scenario iteration lives in `run_all_goldens*.sh`; gate sequencing lives in the +orchestrator. On any failure the script **exits immediately**. Fix the port, then run the +**same script again** — the agent drives re-runs (see skill §5). + +```bash +# macOS (typical dev path when golden-mac/ exists): +cd src/test/golden/ +./run_migration_loop_mac.sh + +# Linux (after capture_golden.sh): +./run_migration_loop.sh +``` + +Do **not** run `GATE=behavioral ./run_all_goldens*.sh` as the normal workflow — that is +for debugging a single failing scenario only. + +Individual gate env vars (`GATE`, `IMPL`) are set by the orchestrator — do not override +when running the full loop. See [The six gates](#the-six-gates) for what each gate checks. + +Orchestrator env vars (all packages): + +| Variable | Default | Purpose | +|----------|---------|---------| +| `SKIP_SANITY` | `0` | `1` = skip GUI sanity step (local dev only) | +| `SKIP_REVIEW` | `0` | `1` = skip code-review reminder (local dev only) | +| `SKIP_PIXEL_GATE` | `0` | `1` = accept gate 2 failure and continue (package-specific; use sparingly) | + +If gate 0, 1, or 2 fails, the orchestrator never reaches sanity, review, or gates 3–5. + +Each `./run_migration_loop*.sh` run prints an agent reminder via +`harness/migration_loop_agent_reminder.sh`. **Exit code 0 does not mean migration is done** +— see [Definition of done](#definition-of-done). + +### On failure — which gate? + +| Script output | Typical cause | +|---------------|---------------| +| `GATE 0 FAILED` | New runtime error vs Mu `runtime_errors.txt` — see `$out/runtime_errors.txt` | +| `GATE 1 FAILED` | Wrong graph/properties — logic, property writes, mode lifecycle | +| `GATE 2 FAILED` | Visual regression — layout, GL render, widget state | +| `SANITY FAILED` | Real-display behavioral drift (same class as gate 1) | +| `NEEDS_AI_REVIEW` | Pixel diff on real display — inspect PNGs; see [GUI sanity](#gui-sanity-real-display) | +| `GATE 3 FAILED` | Broken default launch path — PACKAGE wiring, mode registration, preload | +| `GATE 4 FAILED` | Harness or golden corruption — re-capture Mu; never hand-edit goldens | +| `GATE 5 FAILED` | Missing/incomplete `unit/test_*.py`, pytest failure, or ⬜ rows in COVERAGE.md Mu-methods table | + +Package-specific fix hints live in that package's `COVERAGE.md`. + +**Debug one scenario** (exception to full loop): + +```bash +python3 src/test/golden/harness/run_scenario.py \ + --scenario src/test/golden//scenarios/.py \ + --out /tmp/golden_debug --impl python \ + --mode [--package ] # when dir ≠ mode name +cat /tmp/golden_debug/diag.txt +python3 src/test/golden/harness/compare.py \ + --golden-dir src/test/golden//golden-mac/ \ + --actual-dir /tmp/golden_debug --dmax 0 +``` + +(use `golden/` instead of `golden-mac/` on Linux; add `--no-xvfb` on macOS) + +--- + +## Code review agent + +The [six gates](#the-six-gates) check *behavior* — graph, pixels, runtime, defaults, and +method-level unit tests. None read the *code* holistically. Before treating a loop iteration +as done, a fresh independent agent reviews +the actual diff for correctness — defects that pass every gate because the suite did not +exercise them. + +**Scope: one iteration, not the whole branch.** Review the diff between the current commit +and its immediate parent (`git diff ..HEAD`), not the full branch-vs-`main` history — +the latter is almost always far larger than what any one iteration actually touched, and +reviewing it wastes the agent's attention on code nobody just changed. Exclude binary/generated +artifacts (`golden/`, `golden-mac/` PNGs and `session.rv` files) — review the code that +produced them, not the artifacts themselves. + +**Mechanism:** spawn a fresh `general-purpose` agent (there is no dedicated `code-reviewer` +agent type in this environment) with a prompt that gives it the specific commit range, the +context of what changed and why (a fresh agent has none of the implementing agent's context — +it must be given enough to make real judgment calls, not just told to "review this"), and +specific things to check per file. Have it report via the `ReportFindings` tool, ranked +most-severe first. **Do not** use the `/code-review` slash command for this — it's gated to +explicit user invocation only (`disable-model-invocation`) and cannot be called +programmatically by a loop. + +**Enforcement:** blocking findings (wrong logic, unsafe assumptions, incomplete fixes) require +another fix-and-retry cycle. Non-blocking findings (style, minor nits) are reported but do +not fail the run. + +Conditional step after gates 0–2 pass in the migration loop — agent procedure in +[mu-python-migration skill §5](../../.agents/skills/mu-python-migration/SKILL.md). +The orchestrator prints a reminder; the implementing agent spawns the reviewer and acts on +blocking findings. + +--- + +## Definition of done + +A package migration is accepted when: + +1. Every coverage item in `COVERAGE.md` is ✅ (a passing golden scenario pins it). +2. **Primary outcomes** (top of `COVERAGE.md`) are all ✅ — each has behavioral pin and, + when user-visible, pixel before/after (see [Primary outcomes](#primary-outcomes-required-per-package)). +3. [The six gates](#the-six-gates) pass via `./run_migration_loop*.sh` on the target + platform(s) — including gate 5 (every Mu method recorded; Python unit tests green). +4. [GUI sanity](#gui-sanity-real-display) has run: behavioral matches; pixel report reviewed + and judged acceptable. +5. On macOS (if in scope): compare against `golden-mac/` — see [Mac-native capture](#mac-native-capture). +6. No inventory item is left 🟡 without an explicit, recorded justification (primary + outcomes may not stay 🟡). +7. Any cross-package API the package exposes (callable from other Mu/Python packages) + remains callable — verified by a scenario or integration check before the Mu source is + removed. +8. The [code review agent](#code-review-agent) has run against this iteration's diff with no + unresolved blocking findings. + +## Allowed Operations + +1. No file under golden/ or golden-mac/ shall be modified by hand — only + capture_golden.sh / capture_golden_mac.sh may write them, and only when the + determinism check passes +2. No more than 15 attempts at running all tests is allowed (15 iterations) +3. [GUI sanity](#gui-sanity-real-display) (`run_gui_sanity_gate.sh`) must run before a + migration is considered done — behavioral is hard pass/fail; pixel is report-only and must + be reviewed each run +4. golden/ and golden-mac/ are separate pixel spaces and must never be compared against each + other or merged — a Mac capture failing against `golden/` (or a Linux capture failing + against `golden-mac/`) is not a real signal, just a platform mismatch; always compare Mac + output to `golden-mac/` and Linux output to `golden/` +5. Before calling an iteration done, run the [code review agent](#code-review-agent) on this + iteration's diff (not the whole branch); blocking findings require another fix-and-retry + cycle diff --git a/src/test/golden/doc_browser/COVERAGE.md b/src/test/golden/doc_browser/COVERAGE.md new file mode 100644 index 000000000..05af03a9c --- /dev/null +++ b/src/test/golden/doc_browser/COVERAGE.md @@ -0,0 +1,209 @@ +# `doc_browser` — Migration Coverage Contract + +**Purpose.** Exhaustive list of `doc_browser` behaviors that MUST keep working when the +package is ported from Mu to Python. Each item maps to verification gate(s) and scenario id. +The port is done when every item here passes per [`../VERIFICATION.md`](../VERIFICATION.md). + +**Source of truth.** Mu implementation: +`src/plugins/rv-packages/doc_browser/doc_browser.mu` (~1,794 lines), icon PNGs, `PACKAGE`, +`CMakeLists.txt`. Line numbers below refer to `doc_browser.mu` unless noted. + +**Harness note (pixel-primary).** This mode does not mutate the RV node graph. Gate **1** +(behavioral) pins a stable empty `session.rv` across scenarios; correctness is enforced by +in-scenario `assert`s and gate **2** pixel PNGs of the doc browser window (`browser.png`). + +--- + +## Primary outcomes + +Approved 2026-07-29; expanded so **primary scenarios ≥ 50%** of the suite (8 / 15). + +| # | User-visible outcome | Graph / property signal | Pixel discriminant | Scenario(s) | B | P | +|---|----------------------|-------------------------|--------------------|-------------|---|---| +| 1 | Doc browser opens showing the Mu API legend/start page | `isModeActive("doc_browser")` (assert; `session.rv` unchanged) | `browser.png`: start page with title + icon legend | `db_activate` | assert | req | +| 2 | Help → **Mu Command API Browser…** opens the doc browser | Deactivate then re-activate; `isModeActive` (assert); `session.rv` unchanged | `browser.png`: start page (same discriminant as #1, distinct trigger) | `db_activate_help` | assert | req | +| 3 | Selecting a module in the tree shows module documentation | Assert tree path `commands` (diag); `session.rv` unchanged | `browser.png`: module doc vs start page (must differ) | `db_select_symbol` | assert | req | +| 4 | Selecting a function shows signature + description HTML | Assert path `commands/addSources` (diag); `session.rv` unchanged | `browser.png`: function doc vs module doc (must differ) | `db_select_function` | assert | req | +| 5 | Selecting a type shows class/type layout HTML | Assert path `rvtypes/MinorMode` (diag); `session.rv` unchanged | `browser.png`: type page vs function/module pages (must differ) | `db_select_type` | assert | req | +| 6 | Search finds and lists matching symbols | Assert search query submitted (diag); `session.rv` unchanged | `browser.png`: search results vs start page | `db_search` | assert | req | +| 7 | `mudoc://` link navigates to the linked symbol | Assert navigated to `commands.addSources` (diag); `session.rv` unchanged | `browser.png`: function doc after link (vs prior page) | `db_link_nav` | assert | req | +| 8 | Back toolbar returns to the previous doc page | Assert after back, tree still on `commands` (diag); `session.rv` unchanged | `browser.png`: module page after back from function page (must differ from function PNG) | `db_back_forward` | assert | req | + +**Secondary scenarios (7):** lifecycle, method/constant pages, asciidoc markup module, package +internals, search doc-text match — listed below; required for definition of done but not +primary-outcome rows. + +--- + +## File inventory (approved 2026-07-29) + +| Path | Role | Migration action | +|---|---|---| +| `doc_browser.mu` | Original Mu mode (monolithic) | Remove after full package passes | +| `doc_browser_mu.mu` | Mu bridge: symbol tree, HTML, `DocBrowser` widget | Keep until native Python symbol API | +| `doc_browser.py` | Python `DocBrowserMode` + `createMode()` | **Drafted** — `RV_MODE_IMPL_doc_browser=python` | +| `asciidoc_to_html.py` | Python asciidoc→HTML | Drafted (Mu copy still used by bridge) | +| `*.png` | Tree/start-page icons | Keep unchanged | +| `PACKAGE` | Mode `doc_browser`, `load: delay`, `system: true`, `hidden: true` | ✅ `modes:` → `doc_browser.py` | +| `CMakeLists.txt` | RVPKG target `doc_browser` | Unchanged (RVPKG picks up `.py`) | + +**External callers:** + +| Package | Usage | +|---|---| +| `openrv_help_menu` | Help → **Mu Command API Browser…** → `modeManager.activateMode("doc_browser", true)` | + +**Files to create:** + +| Path | Role | +|---|---| +| `doc_browser.py` | Python port + `createMode()` | +| `src/test/golden/doc_browser/scenarios/*.py` | Golden scenarios (15 total) | +| `src/test/golden/doc_browser/run_all_goldens*.sh` | Gate runners | +| `src/test/golden/doc_browser/run_migration_loop*.sh` | Migration loop orchestrator | +| `src/test/golden/doc_browser/capture_golden*.sh` | Mu baseline capture | +| `src/test/golden/doc_browser/run_gui_sanity_gate.sh` | GUI sanity step | + +**Harness:** mode name == package dir (`doc_browser`). `db_activate_help` also preloads +`help` and passes `--menu-bar`; deactivates doc browser first, then re-activates via Help +menu (or `activateMode` fallback when the menu bar is hidden under `-nomb`). + +**Port risks:** + +- Mu runtime symbol introspection has no native Python API — expect Mu bridge via + `runtime.eval` or a small retained Mu helper. +- `QWebEngineView` rendering — capture on macOS real display (`golden-mac/`). + +--- + +## Verification method + +Gates (**B** / **P**), migration loop, capture, definition of done: +[`../VERIFICATION.md`](../VERIFICATION.md). + +Coverage legend: **✅** = pinned by committed Mu golden; **🟡** = partial; **⬜** = awaiting capture. + +Mu baselines committed in `golden-mac/` (15 scenarios, 2026-07-29). Gate 4 Mu integrity ✅. +Gates 0–2 pass with `IMPL=python` using `doc_browser.py` + `doc_browser_mu.mu` bridge. + +--- + +## Migration loop (this package) + +```bash +cd src/test/golden/doc_browser +./run_migration_loop_mac.sh +``` + +**Gate failure hints:** + +| Output | Fix focus | +|--------|-----------| +| Gate 0 | QWebEngine / symbol bridge runtime errors | +| Gate 1 | Unexpected `session.rv` drift (should stay default empty session) | +| Gate 2 | HTML layout, CSS, icons, QWebEngine render, column view | +| Gate 3 | Optional `system: true` package + `ModeManagerPreload=doc_browser` under `-noPrefs` | + +--- + +## A. Activation & lifecycle + +| # | Behavior | Ref | Gate | Status | Scenario | +|---|---|---|---|---|---| +| A1 | `activateMode("doc_browser")` opens browser window | 1779-1786, 1726-1771 | B+P | ✅ | `db_activate` | +| A2 | Help menu **Mu Command API Browser…** (or `modeManager` equivalent) | openrv_help_menu:64-68 | B+P | ✅ | `db_activate_help` | +| A3 | Mode loads delayed (`load: delay`) — inactive until toggled | PACKAGE:13 | B | ✅ | `db_activate` | +| A4 | `deactivate` hides window / mode inactive | 1774-1777 | B | ✅ | `db_deactivate` | +| A5 | Window `hideEvent` toggles mode off when user closes window | 1694-1697 | B | ✅ | `db_window_hide` | +| A6 | `before-session-deletion` closes browser | 1717-1718 | — | — | Dropped — no deterministic session artifact | + +## B. Symbol tree & documentation + +| # | Behavior | Ref | Gate | Status | Scenario | +|---|---|---|---|---|---| +| B1 | Start page HTML (legend table, icons) | 277-294, 1643 | P | ✅ | `db_activate` | +| B2 | Column view lists filtered/sorted Mu symbols | 651-864, 574-620 | P | ✅ | `db_activate`, `db_doc_browser_internals` | +| B3 | Selecting module updates web view | 1367-1419, 1305-1365 | B+P | ✅ | `db_select_symbol` | +| B4 | Function info (signature, params, mudoc links) | 916-989 | B+P | ✅ | `db_select_function`, `db_link_nav` | +| B5 | Method info page | 916-989, 1378 | B+P | ✅ | `db_select_method` | +| B6 | Type/class info (fields, constructors, methods tables) | 1109-1303 | B+P | ✅ | `db_select_type` | +| B7 | Symbolic constant / variable info | 909-914, 1382-1383 | B+P | ✅ | `db_select_constant` | +| B8 | `mudoc://` navigation updates tree + HTML | 1422-1507, 632-647 | B+P | ✅ | `db_link_nav` | +| B9 | Package-internal symbols (`DocModel`, `DocPage`, …) | 651-864, 622-649 | P | ✅ | `db_doc_browser_internals` | + +## C. Search & navigation + +| # | Behavior | Ref | Gate | Status | Scenario | +|---|---|---|---|---|---| +| C1 | Search box: plain text → `musearch:///` results | 1700-1712, 1527-1604 | B+P | ✅ | `db_search` | +| C2 | Search matches documentation text (subtext row) | 1582-1585 | P | ✅ | `db_search_doc_match` | +| C3 | Search box: `mudoc://` URL navigates directly | 1704-1707 | B+P | ✅ | `db_link_nav` | +| C4 | Back toolbar walks `_backHistory` | 1509-1525, 1766 | B+P | ✅ | `db_back_forward` | +| C5 | Forward toolbar (exercised before capture in scenario flow) | 1606-1620, 1767 | B | ✅ | `db_back_forward` | +| C6 | External `http(s)://` load | 1486-1495 | — | — | Dropped — network | + +## D. `asciidoc_to_html` + +| # | Behavior | Ref | Gate | Status | Scenario | +|---|---|---|---|---|---| +| D1 | Inline formatting: bold/italic/mono/pass/URLs | 73-124 | P | ✅ | `db_asciidoc_module` | +| D2 | Paragraph toggle on blank lines | 159-163 | P | ✅ | `db_asciidoc_module` | +| D3 | Bullet lists | 184-189 | P | ✅ | `db_asciidoc_module` | +| D4 | Listing/example `
` blocks | 190-212 | P | ✅ | `db_asciidoc_module` |
+| D5 | Tables with width/class attributes | 216-258 | P | ✅ | `db_asciidoc_module` |
+| D6 | URL autolink | 113-116 | P | ✅ | `db_asciidoc_module` |
+
+Module `asciidoc_to_html` documentation (embedded in `doc_browser.mu` lines 8-50) contains
+all markup variants above — one scenario pins the rendered HTML via `db_asciidoc_module`.
+
+---
+
+## Dropped (no equivalent golden test)
+
+| Behavior | Reason |
+|---|---|
+| External `http(s)://` page load in web view | Network/non-deterministic |
+| Scroll position restore on back/forward | Code commented out in Mu |
+| `before-session-deletion` close handler | No stable `session.rv` artifact |
+| Print-on-exception diagnostics | Not user-visible |
+
+---
+
+## Scenarios (15 total — 8 primary, 7 secondary)
+
+### Primary (8 — 53% of suite)
+
+| Id | Gates | Trigger / outcome pinned |
+|---|---|---|
+| `db_activate` | B+P | `activateMode`; start/legend page |
+| `db_activate_help` | B+P | Help menu / re-activate path (`openrv_help_menu` caller) |
+| `db_select_symbol` | B+P | tree → `commands` module |
+| `db_select_function` | B+P | tree → `commands` / `addSources` |
+| `db_select_type` | B+P | tree → `rvtypes` / `MinorMode` |
+| `db_search` | B+P | search → `commands` |
+| `db_link_nav` | B+P | `mudoc:///commands.addSources` via search box |
+| `db_back_forward` | B+P | module → function → toolbar back (module page PNG) |
+
+### Secondary (7)
+
+| Id | Gates | Trigger / outcome pinned |
+|---|---|---|
+| `db_deactivate` | B+P | active browser → `deactivateMode` |
+| `db_window_hide` | B+P | close window → mode inactive |
+| `db_select_method` | B+P | tree → `rvtypes` / `MinorMode` / `init` |
+| `db_select_constant` | B+P | tree → `math` / `pi` |
+| `db_asciidoc_module` | B+P | tree → `asciidoc_to_html` (markup-rich module doc) |
+| `db_doc_browser_internals` | B+P | tree → `doc_browser` / `DocModel` |
+| `db_search_doc_match` | B+P | search → `asciidoc` (doc-text match subtext) |
+
+Runners: `run_all_goldens_mac.sh`, `capture_golden_mac.sh`. Mu baselines in
+`golden-mac/` (15 scenarios, 2026-07-29). Gate 4 (`IMPL=mu`) verified ✅.
+
+---
+
+## Status summary
+
+**15** scenarios scripted (**8 primary**, 7 secondary); Mu baselines committed in
+`golden-mac/` ✅; Python port **drafted** (`doc_browser.py` + `doc_browser_mu.mu` bridge).
+
+**Next checkpoint:** implement Python port (`doc_browser.py`) → `./run_migration_loop_mac.sh`
diff --git a/src/test/golden/doc_browser/capture_golden.sh b/src/test/golden/doc_browser/capture_golden.sh
new file mode 100755
index 000000000..1d2e2d008
--- /dev/null
+++ b/src/test/golden/doc_browser/capture_golden.sh
@@ -0,0 +1,161 @@
+#!/usr/bin/env bash
+# Capture Mu baselines for doc_browser into golden// (Linux Xvfb).
+#
+# Usage:
+#   ./capture_golden.sh [scenario_id ...]
+#
+set -euo pipefail
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+RUNTIME_CHECK="$REPO_ROOT/src/test/golden/harness/runtime_log_check.py"
+RMS_IMAGE_DIFF="${RMS_IMAGE_DIFF:-$REPO_ROOT/_build/stage/app/bin/rmsImageDiff}"
+RV="${RV:-$REPO_ROOT/_build/stage/app/bin/rv}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden"
+TIMEOUT="${TIMEOUT:-600}"
+
+DB_MODE="${DB_MODE:-doc_browser}"
+HELP_MODE="${HELP_MODE:-help}"
+
+runner_extra_flags() {
+    local id="$1"
+    if [ "$id" = "db_activate_help" ]; then
+        echo "--mode" "${DB_MODE},${HELP_MODE}" "--menu-bar"
+    else
+        echo "--mode" "$DB_MODE"
+    fi
+}
+
+all_scenario_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_db_common.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    while IFS= read -r id; do
+        [ -f "$GOLDEN/$id/session.rv" ] && continue
+        ids+=("$id")
+    done < <(all_scenario_ids)
+fi
+
+if [ ${#ids[@]} -eq 0 ]; then
+    echo "Nothing to capture (all golden baselines present)."
+    exit 0
+fi
+
+pngs_identical() {
+    local a="$1" b="$2"
+    local out
+    out="$("$RMS_IMAGE_DIFF" -m "$a" "$b" 2>&1)" || {
+        echo "rmsImageDiff failed: $out"
+        return 1
+    }
+    if echo "$out" | grep -q "max diff at"; then
+        echo "$out" | grep "max diff at"
+        return 1
+    fi
+    return 0
+}
+
+echo "Capturing ${#ids[@]} doc_browser scenario(s) --impl mu under Xvfb, 2x determinism"
+
+fail=0
+fail_list=""
+
+for id in "${ids[@]}"; do
+    read -ra RUNNER_EXTRA <<< "$(runner_extra_flags "$id")"
+    scenario="$SCENARIOS/${id}.py"
+    if [ ! -f "$scenario" ]; then
+        echo "ERROR: missing scenario $scenario" >&2
+        exit 2
+    fi
+    out1="/tmp/golden_capture_${id}_a"
+    out2="/tmp/golden_capture_${id}_b"
+    dest="$GOLDEN/$id"
+    echo "==> $id (run 1/2)"
+    rm -rf "$out1"
+    mkdir -p "$out1"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out1" --rv "$RV" \
+        --impl mu --timeout "$TIMEOUT" \
+        --allow-runtime-errors \
+        "${RUNNER_EXTRA[@]}"; then
+        echo "FAIL $id (run 1)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if [ ! -f "$out1/session.rv" ]; then
+        echo "FAIL $id (no session.rv run 1)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    echo "==> $id (run 2/2)"
+    rm -rf "$out2"
+    mkdir -p "$out2"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out2" --rv "$RV" \
+        --impl mu --timeout "$TIMEOUT" \
+        --allow-runtime-errors \
+        "${RUNNER_EXTRA[@]}"; then
+        echo "FAIL $id (run 2)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if [ ! -f "$out2/session.rv" ]; then
+        echo "FAIL $id (no session.rv run 2)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+
+    det_ok=1
+    if ! diff -q "$out1/session.rv" "$out2/session.rv" >/dev/null 2>&1; then
+        echo "FAIL $id: session.rv not deterministic"
+        det_ok=0
+    fi
+    tmp1="$(mktemp)" tmp2="$(mktemp)"
+    python3 "$RUNTIME_CHECK" "$out1" --write-baseline "$tmp1" >/dev/null
+    python3 "$RUNTIME_CHECK" "$out2" --write-baseline "$tmp2" >/dev/null
+    if ! diff -q "$tmp1" "$tmp2" >/dev/null 2>&1; then
+        echo "FAIL $id: runtime_errors.txt not deterministic"
+        det_ok=0
+    fi
+    rm -f "$tmp1" "$tmp2"
+    for png in "$out1"/*.png; do
+        [ -f "$png" ] || continue
+        name="$(basename "$png")"
+        if [ ! -f "$out2/$name" ]; then
+            echo "FAIL $id: $name missing run 2"
+            det_ok=0
+            continue
+        fi
+        if ! pngs_identical "$png" "$out2/$name"; then
+            echo "FAIL $id: $name not deterministic"
+            det_ok=0
+        fi
+    done
+    if [ "$det_ok" -ne 1 ]; then
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+
+    rm -rf "$dest"
+    mkdir -p "$dest"
+    cp "$out1/session.rv" "$dest/"
+    python3 "$RUNTIME_CHECK" "$out1" --write-baseline "$dest/runtime_errors.txt"
+    for png in "$out1"/*.png; do
+        [ -f "$png" ] || continue
+        cp "$png" "$dest/"
+    done
+    echo "    -> $dest ($(ls "$dest" | tr '\n' ' '))"
+done
+
+echo "---"
+if [ "$fail" -gt 0 ]; then
+    echo "FAILED:$fail_list"
+    exit 1
+fi
+echo "Capture complete."
diff --git a/src/test/golden/doc_browser/capture_golden_mac.sh b/src/test/golden/doc_browser/capture_golden_mac.sh
new file mode 100755
index 000000000..a05edc673
--- /dev/null
+++ b/src/test/golden/doc_browser/capture_golden_mac.sh
@@ -0,0 +1,166 @@
+#!/usr/bin/env bash
+# Capture Mac-native Mu baselines for doc_browser into golden-mac//.
+#
+# Usage:
+#   ./capture_golden_mac.sh [scenario_id ...]
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+RUNTIME_CHECK="$REPO_ROOT/src/test/golden/harness/runtime_log_check.py"
+RMS_IMAGE_DIFF="${RMS_IMAGE_DIFF:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/rmsImageDiff}"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden-mac"
+TIMEOUT="${TIMEOUT:-600}"
+
+DB_MODE="${DB_MODE:-doc_browser}"
+HELP_MODE="${HELP_MODE:-help}"
+
+runner_extra_flags() {
+    local id="$1"
+    if [ "$id" = "db_activate_help" ]; then
+        echo "--mode" "${DB_MODE},${HELP_MODE}" "--menu-bar"
+    else
+        echo "--mode" "$DB_MODE"
+    fi
+}
+
+all_scenario_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_db_common.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    while IFS= read -r id; do
+        [ -f "$GOLDEN/$id/session.rv" ] && continue
+        ids+=("$id")
+    done < <(all_scenario_ids)
+fi
+
+if [ ${#ids[@]} -eq 0 ]; then
+    echo "Nothing to capture (all golden-mac baselines present)."
+    exit 0
+fi
+
+pngs_identical() {
+    local a="$1" b="$2"
+    local out
+    out="$("$RMS_IMAGE_DIFF" -m "$a" "$b" 2>&1)" || {
+        echo "rmsImageDiff failed: $out"
+        return 1
+    }
+    if echo "$out" | grep -q "max diff at"; then
+        echo "$out" | grep "max diff at"
+        return 1
+    fi
+    return 0
+}
+
+echo "Capturing ${#ids[@]} doc_browser scenario(s) --impl mu --no-xvfb, 2x determinism"
+
+fail=0
+fail_list=""
+
+for id in "${ids[@]}"; do
+    read -ra RUNNER_EXTRA <<< "$(runner_extra_flags "$id")"
+    scenario="$SCENARIOS/${id}.py"
+    if [ ! -f "$scenario" ]; then
+        echo "ERROR: missing scenario $scenario" >&2
+        exit 2
+    fi
+    out1="/tmp/golden_mac_capture_${id}_a"
+    out2="/tmp/golden_mac_capture_${id}_b"
+    dest="$GOLDEN/$id"
+    echo "==> $id (run 1/2)"
+    rm -rf "$out1"
+    mkdir -p "$out1"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out1" --rv "$RV" \
+        --impl mu --no-xvfb --timeout "$TIMEOUT" \
+        --allow-runtime-errors \
+        "${RUNNER_EXTRA[@]}"; then
+        echo "FAIL $id (run 1)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if [ ! -f "$out1/session.rv" ]; then
+        echo "FAIL $id (no session.rv run 1)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    echo "==> $id (run 2/2)"
+    rm -rf "$out2"
+    mkdir -p "$out2"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out2" --rv "$RV" \
+        --impl mu --no-xvfb --timeout "$TIMEOUT" \
+        --allow-runtime-errors \
+        "${RUNNER_EXTRA[@]}"; then
+        echo "FAIL $id (run 2)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if [ ! -f "$out2/session.rv" ]; then
+        echo "FAIL $id (no session.rv run 2)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+
+    det_ok=1
+    if ! diff -q "$out1/session.rv" "$out2/session.rv" >/dev/null 2>&1; then
+        echo "FAIL $id: session.rv not deterministic"
+        det_ok=0
+    fi
+    tmp1="$(mktemp)" tmp2="$(mktemp)"
+    python3 "$RUNTIME_CHECK" "$out1" --write-baseline "$tmp1" >/dev/null
+    python3 "$RUNTIME_CHECK" "$out2" --write-baseline "$tmp2" >/dev/null
+    if ! diff -q "$tmp1" "$tmp2" >/dev/null 2>&1; then
+        echo "FAIL $id: runtime_errors.txt not deterministic"
+        det_ok=0
+    fi
+    rm -f "$tmp1" "$tmp2"
+    for png in "$out1"/*.png; do
+        [ -f "$png" ] || continue
+        name="$(basename "$png")"
+        if [ ! -f "$out2/$name" ]; then
+            echo "FAIL $id: $name missing run 2"
+            det_ok=0
+            continue
+        fi
+        if ! pngs_identical "$png" "$out2/$name"; then
+            echo "FAIL $id: $name not deterministic"
+            det_ok=0
+        fi
+    done
+    if [ "$det_ok" -ne 1 ]; then
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+
+    rm -rf "$dest"
+    mkdir -p "$dest"
+    cp "$out1/session.rv" "$dest/"
+    python3 "$RUNTIME_CHECK" "$out1" --write-baseline "$dest/runtime_errors.txt"
+    for png in "$out1"/*.png; do
+        [ -f "$png" ] || continue
+        cp "$png" "$dest/"
+    done
+    echo "    -> $dest ($(ls "$dest" | tr '\n' ' '))"
+done
+
+echo "---"
+if [ "$fail" -gt 0 ]; then
+    echo "FAILED:$fail_list"
+    exit 1
+fi
+echo "Capture complete."
diff --git a/src/test/golden/doc_browser/golden-mac/db_activate/browser.png b/src/test/golden/doc_browser/golden-mac/db_activate/browser.png
new file mode 100644
index 000000000..9716710cd
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_activate/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_activate/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_activate/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_activate/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_activate/session.rv b/src/test/golden/doc_browser/golden-mac/db_activate/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_activate/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_activate_help/browser.png b/src/test/golden/doc_browser/golden-mac/db_activate_help/browser.png
new file mode 100644
index 000000000..9716710cd
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_activate_help/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_activate_help/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_activate_help/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_activate_help/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_activate_help/session.rv b/src/test/golden/doc_browser/golden-mac/db_activate_help/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_activate_help/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/browser.png b/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/browser.png
new file mode 100644
index 000000000..87c19362a
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/session.rv b/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_asciidoc_module/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_back_forward/browser.png b/src/test/golden/doc_browser/golden-mac/db_back_forward/browser.png
new file mode 100644
index 000000000..9f06f49cd
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_back_forward/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_back_forward/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_back_forward/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_back_forward/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_back_forward/session.rv b/src/test/golden/doc_browser/golden-mac/db_back_forward/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_back_forward/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_deactivate/browser.png b/src/test/golden/doc_browser/golden-mac/db_deactivate/browser.png
new file mode 100644
index 000000000..9716710cd
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_deactivate/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_deactivate/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_deactivate/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_deactivate/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_deactivate/session.rv b/src/test/golden/doc_browser/golden-mac/db_deactivate/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_deactivate/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/browser.png b/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/browser.png
new file mode 100644
index 000000000..2a23ef2df
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/session.rv b/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_doc_browser_internals/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_link_nav/browser.png b/src/test/golden/doc_browser/golden-mac/db_link_nav/browser.png
new file mode 100644
index 000000000..682183554
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_link_nav/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_link_nav/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_link_nav/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_link_nav/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_link_nav/session.rv b/src/test/golden/doc_browser/golden-mac/db_link_nav/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_link_nav/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_search/browser.png b/src/test/golden/doc_browser/golden-mac/db_search/browser.png
new file mode 100644
index 000000000..18b5f6e30
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_search/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_search/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_search/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_search/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_search/session.rv b/src/test/golden/doc_browser/golden-mac/db_search/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_search/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_search_doc_match/browser.png b/src/test/golden/doc_browser/golden-mac/db_search_doc_match/browser.png
new file mode 100644
index 000000000..608f19339
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_search_doc_match/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_search_doc_match/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_search_doc_match/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_search_doc_match/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_search_doc_match/session.rv b/src/test/golden/doc_browser/golden-mac/db_search_doc_match/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_search_doc_match/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_constant/browser.png b/src/test/golden/doc_browser/golden-mac/db_select_constant/browser.png
new file mode 100644
index 000000000..146624368
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_select_constant/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_constant/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_select_constant/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_constant/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_constant/session.rv b/src/test/golden/doc_browser/golden-mac/db_select_constant/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_constant/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_function/browser.png b/src/test/golden/doc_browser/golden-mac/db_select_function/browser.png
new file mode 100644
index 000000000..682183554
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_select_function/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_function/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_select_function/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_function/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_function/session.rv b/src/test/golden/doc_browser/golden-mac/db_select_function/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_function/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_method/browser.png b/src/test/golden/doc_browser/golden-mac/db_select_method/browser.png
new file mode 100644
index 000000000..f081e318e
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_select_method/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_method/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_select_method/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_method/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_method/session.rv b/src/test/golden/doc_browser/golden-mac/db_select_method/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_method/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_symbol/browser.png b/src/test/golden/doc_browser/golden-mac/db_select_symbol/browser.png
new file mode 100644
index 000000000..9f06f49cd
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_select_symbol/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_symbol/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_select_symbol/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_symbol/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_symbol/session.rv b/src/test/golden/doc_browser/golden-mac/db_select_symbol/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_symbol/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_type/browser.png b/src/test/golden/doc_browser/golden-mac/db_select_type/browser.png
new file mode 100644
index 000000000..6bcb0bb32
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_select_type/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_type/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_select_type/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_type/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_select_type/session.rv b/src/test/golden/doc_browser/golden-mac/db_select_type/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_select_type/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/golden-mac/db_window_hide/browser.png b/src/test/golden/doc_browser/golden-mac/db_window_hide/browser.png
new file mode 100644
index 000000000..9716710cd
Binary files /dev/null and b/src/test/golden/doc_browser/golden-mac/db_window_hide/browser.png differ
diff --git a/src/test/golden/doc_browser/golden-mac/db_window_hide/runtime_errors.txt b/src/test/golden/doc_browser/golden-mac/db_window_hide/runtime_errors.txt
new file mode 100644
index 000000000..1d123180d
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_window_hide/runtime_errors.txt
@@ -0,0 +1,3 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
diff --git a/src/test/golden/doc_browser/golden-mac/db_window_hide/session.rv b/src/test/golden/doc_browser/golden-mac/db_window_hide/session.rv
new file mode 100644
index 000000000..ba84a90c5
--- /dev/null
+++ b/src/test/golden/doc_browser/golden-mac/db_window_hide/session.rv
@@ -0,0 +1,359 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/doc_browser/run_all_goldens.sh b/src/test/golden/doc_browser/run_all_goldens.sh
new file mode 100755
index 000000000..3cab9db3d
--- /dev/null
+++ b/src/test/golden/doc_browser/run_all_goldens.sh
@@ -0,0 +1,168 @@
+#!/usr/bin/env bash
+# Run doc_browser golden scenarios against golden/ (Linux Xvfb + software Mesa).
+#
+# Usage:
+#   ./run_all_goldens.sh
+#   IMPL=mu ./run_all_goldens.sh
+#   NO_XVFB=1 ./run_all_goldens.sh    # real display smoke (non-gated)
+#
+set -euo pipefail
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+COMPARE="$REPO_ROOT/src/test/golden/harness/compare.py"
+RV="${RV:-$REPO_ROOT/_build/stage/app/bin/rv}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden"
+IMPL="${IMPL:-python}"
+TIMEOUT="${TIMEOUT:-600}"
+DMAX="${DMAX:-0}"
+NO_XVFB="${NO_XVFB:-0}"
+GATE="${GATE:-both}"
+
+DB_MODE="${DB_MODE:-doc_browser}"
+HELP_MODE="${HELP_MODE:-help}"
+
+runner_extra_flags() {
+    local id="$1"
+    if [ "$id" = "db_activate_help" ]; then
+        echo "--mode" "${DB_MODE},${HELP_MODE}" "--menu-bar"
+    else
+        echo "--mode" "$DB_MODE"
+    fi
+}
+
+all_required_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_db_common.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    ids=()
+    while IFS= read -r id; do
+        ids+=("$id")
+    done < <(all_required_ids)
+fi
+
+pass=0
+fail=0
+fail_list=""
+
+if [ "$GATE" = "default" ]; then
+    IMPL=default
+fi
+
+xvfb_flag=()
+if [ "$NO_XVFB" = "1" ]; then
+    xvfb_flag=(--no-xvfb)
+fi
+
+gate_note="behavioral+pixel dmax=$DMAX"
+case "$GATE" in
+    behavioral) gate_note="behavioral-only" ;;
+    pixel)      gate_note="pixel-only dmax=$DMAX" ;;
+    default)    gate_note="default-launch behavioral-only" ;;
+    runtime)    gate_note="runtime delta vs Mu golden (runtime_errors.txt)" ;;
+esac
+
+echo "doc_browser goldens (Linux): impl=$IMPL gate=$GATE ($gate_note) timeout=${TIMEOUT}s (${#ids[@]} scenarios)"
+
+for id in "${ids[@]}"; do
+    golden_dir="$GOLDEN/$id"
+    scenario="$SCENARIOS/${id}.py"
+    out="/tmp/golden_${id}"
+    if [ ! -f "$golden_dir/session.rv" ]; then
+        echo "FAIL $id (no golden baseline — run capture_golden.sh $id)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    rm -rf "$out"
+    mkdir -p "$out"
+    read -ra RUNNER_EXTRA <<< "$(runner_extra_flags "$id")"
+    runtime_golden_flag=(--runtime-golden-dir "$golden_dir")
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out" --rv "$RV" \
+        --impl "$IMPL" --timeout "$TIMEOUT" \
+        "${xvfb_flag[@]}" \
+        "${RUNNER_EXTRA[@]}" \
+        "${runtime_golden_flag[@]}" >/dev/null 2>&1; then
+        if [ "$GATE" = "runtime" ]; then
+            echo "FAIL $id (runtime — see $out/runtime_errors.txt)"
+        else
+            echo "FAIL $id (run_scenario)"
+        fi
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        pkill -f "${RV} " 2>/dev/null || true
+        sleep 0.3
+        continue
+    fi
+    if [ "$GATE" = "runtime" ]; then
+        echo "PASS $id"
+        pass=$((pass + 1))
+        pkill -f "${RV} " 2>/dev/null || true
+        sleep 0.3
+        continue
+    fi
+    compare_rc=0
+    compare_out="$(python3 "$COMPARE" \
+        --golden-dir "$golden_dir" --actual-dir "$out" --dmax "$DMAX" 2>&1)" || compare_rc=$?
+    compare_rc=${compare_rc:-0}
+    behavioral_ok=0
+    pixel_ok=0
+    if echo "$compare_out" | grep -q "^behavioral: MATCH"; then
+        behavioral_ok=1
+    fi
+    if echo "$compare_out" | grep -q "pixel: MATCH"; then
+        pixel_ok=1
+    fi
+    has_png_golden=0
+    if compgen -G "$golden_dir/*.png" >/dev/null 2>&1; then
+        has_png_golden=1
+    fi
+    case "$GATE" in
+        behavioral|default)
+            if [ "$behavioral_ok" -eq 1 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (behavioral)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+        pixel)
+            if [ "$has_png_golden" -eq 0 ]; then
+                echo "PASS $id (no PNG baseline)"
+                pass=$((pass + 1))
+            elif [ "$pixel_ok" -eq 1 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (pixel)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+        both)
+            if [ "$compare_rc" -eq 0 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (compare)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+    esac
+    pkill -f "${RV} " 2>/dev/null || true
+    sleep 0.3
+done
+
+echo "--- PASS=$pass FAIL=$fail"
+if [ "$fail" -gt 0 ]; then
+    echo "Failed:$fail_list"
+    exit 1
+fi
diff --git a/src/test/golden/doc_browser/run_all_goldens_mac.sh b/src/test/golden/doc_browser/run_all_goldens_mac.sh
new file mode 100755
index 000000000..3c44bff4c
--- /dev/null
+++ b/src/test/golden/doc_browser/run_all_goldens_mac.sh
@@ -0,0 +1,166 @@
+#!/usr/bin/env bash
+# Run doc_browser golden scenarios against golden-mac/ (macOS native display).
+#
+# Usage:
+#   ./run_all_goldens_mac.sh              # verify Python port (default)
+#   IMPL=mu ./run_all_goldens_mac.sh      # Mu determinism check
+#   ./run_all_goldens_mac.sh db_activate  # single scenario
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+COMPARE="$REPO_ROOT/src/test/golden/harness/compare.py"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden-mac"
+IMPL="${IMPL:-python}"
+TIMEOUT="${TIMEOUT:-600}"
+DMAX="${DMAX:-0}"
+GATE="${GATE:-both}"
+
+DB_MODE="${DB_MODE:-doc_browser}"
+HELP_MODE="${HELP_MODE:-help}"
+
+runner_extra_flags() {
+    local id="$1"
+    if [ "$id" = "db_activate_help" ]; then
+        echo "--mode" "${DB_MODE},${HELP_MODE}" "--menu-bar"
+    else
+        echo "--mode" "$DB_MODE"
+    fi
+}
+
+all_required_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_db_common.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    ids=()
+    while IFS= read -r id; do
+        ids+=("$id")
+    done < <(all_required_ids)
+fi
+
+pass=0
+fail=0
+fail_list=""
+
+if [ "$GATE" = "default" ]; then
+    IMPL=default
+fi
+
+gate_note="behavioral+pixel dmax=$DMAX"
+case "$GATE" in
+    behavioral) gate_note="behavioral-only" ;;
+    pixel)      gate_note="pixel-only dmax=$DMAX" ;;
+    default)    gate_note="default-launch behavioral-only" ;;
+    runtime)    gate_note="runtime delta vs Mu golden (runtime_errors.txt)" ;;
+esac
+
+echo "doc_browser goldens (Mac): impl=$IMPL gate=$GATE ($gate_note) timeout=${TIMEOUT}s (${#ids[@]} scenarios)"
+
+for id in "${ids[@]}"; do
+    golden_dir="$GOLDEN/$id"
+    scenario="$SCENARIOS/${id}.py"
+    out="/tmp/golden_${id}"
+    if [ ! -f "$golden_dir/session.rv" ]; then
+        echo "FAIL $id (no golden-mac baseline — run capture_golden_mac.sh $id)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    rm -rf "$out"
+    mkdir -p "$out"
+    read -ra RUNNER_EXTRA <<< "$(runner_extra_flags "$id")"
+    runtime_golden_flag=(--runtime-golden-dir "$golden_dir")
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out" --rv "$RV" \
+        --impl "$IMPL" --no-xvfb --timeout "$TIMEOUT" \
+        "${RUNNER_EXTRA[@]}" \
+        "${runtime_golden_flag[@]}" >/dev/null 2>&1; then
+        if [ "$GATE" = "runtime" ]; then
+            echo "FAIL $id (runtime — new errors vs golden; see $out/runtime_errors.txt)"
+        else
+            echo "FAIL $id (run_scenario)"
+        fi
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        pkill -f "${RV} " 2>/dev/null || true
+        sleep 0.3
+        continue
+    fi
+    if [ "$GATE" = "runtime" ]; then
+        echo "PASS $id"
+        pass=$((pass + 1))
+        pkill -f "${RV} " 2>/dev/null || true
+        sleep 0.3
+        continue
+    fi
+    compare_rc=0
+    compare_out="$(python3 "$COMPARE" \
+        --golden-dir "$golden_dir" --actual-dir "$out" --dmax "$DMAX" 2>&1)" || compare_rc=$?
+    compare_rc=${compare_rc:-0}
+    behavioral_ok=0
+    pixel_ok=0
+    if echo "$compare_out" | grep -q "^behavioral: MATCH"; then
+        behavioral_ok=1
+    fi
+    if echo "$compare_out" | grep -q "pixel: MATCH"; then
+        pixel_ok=1
+    fi
+    has_png_golden=0
+    if compgen -G "$golden_dir/*.png" >/dev/null 2>&1; then
+        has_png_golden=1
+    fi
+    case "$GATE" in
+        behavioral|default)
+            if [ "$behavioral_ok" -eq 1 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (behavioral)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+        pixel)
+            if [ "$has_png_golden" -eq 0 ]; then
+                echo "PASS $id (no PNG baseline)"
+                pass=$((pass + 1))
+            elif [ "$pixel_ok" -eq 1 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (pixel)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+        both)
+            if [ "$compare_rc" -eq 0 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (compare)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+    esac
+    pkill -f "${RV} " 2>/dev/null || true
+    sleep 0.3
+done
+
+echo "--- PASS=$pass FAIL=$fail"
+if [ "$fail" -gt 0 ]; then
+    echo "Failed:$fail_list"
+    exit 1
+fi
diff --git a/src/test/golden/doc_browser/run_gui_sanity_gate.sh b/src/test/golden/doc_browser/run_gui_sanity_gate.sh
new file mode 100755
index 000000000..808b93160
--- /dev/null
+++ b/src/test/golden/doc_browser/run_gui_sanity_gate.sh
@@ -0,0 +1,105 @@
+#!/usr/bin/env bash
+# GUI sanity gate for doc_browser — real display, behavioral hard, pixel report-only.
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+COMPARE="$REPO_ROOT/src/test/golden/harness/compare.py"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden-mac"
+IMPL="${IMPL:-python}"
+TIMEOUT="${TIMEOUT:-600}"
+
+DB_MODE="${DB_MODE:-doc_browser}"
+HELP_MODE="${HELP_MODE:-help}"
+
+runner_extra_flags() {
+    local id="$1"
+    if [ "$id" = "db_activate_help" ]; then
+        echo "--mode" "${DB_MODE},${HELP_MODE}" "--menu-bar"
+    else
+        echo "--mode" "$DB_MODE"
+    fi
+}
+
+all_required_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_db_common.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    ids=()
+    while IFS= read -r id; do
+        ids+=("$id")
+    done < <(all_required_ids)
+fi
+
+pass=0
+fail=0
+fail_list=""
+review_ids=""
+
+echo "doc_browser GUI sanity: impl=$IMPL real-display (${#ids[@]} scenarios)"
+
+for id in "${ids[@]}"; do
+    golden_dir="$GOLDEN/$id"
+    scenario="$SCENARIOS/${id}.py"
+    out="/tmp/db_gui_sanity_${id}"
+    if [ ! -f "$golden_dir/session.rv" ]; then
+        echo "FAIL $id (no golden-mac baseline)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    rm -rf "$out"
+    mkdir -p "$out"
+    read -ra RUNNER_EXTRA <<< "$(runner_extra_flags "$id")"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out" --rv "$RV" \
+        --impl "$IMPL" --no-xvfb --timeout "$TIMEOUT" \
+        "${RUNNER_EXTRA[@]}" \
+        --runtime-golden-dir "$golden_dir" >/dev/null 2>&1; then
+        echo "FAIL $id (run_scenario)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    compare_rc=0
+    compare_out="$(python3 "$COMPARE" \
+        --golden-dir "$golden_dir" \
+        --behavioral-golden-dir "$golden_dir" \
+        --actual-dir "$out" \
+        --pixel-mode report 2>&1)" || compare_rc=$?
+    if [ "$compare_rc" -ne 0 ]; then
+        echo "FAIL $id (behavioral mismatch or missing artifact)"
+        echo "$compare_out" | head -8
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if echo "$compare_out" | grep -q "pixel: INFO"; then
+        review_ids="$review_ids $id"
+        echo "PASS $id (behavioral OK — pixel report needs review)"
+    else
+        echo "PASS $id"
+    fi
+    pass=$((pass + 1))
+done
+
+echo "---"
+echo "PASS=$pass FAIL=$fail"
+if [ -n "$review_ids" ]; then
+    echo "NEEDS_AI_REVIEW:$review_ids"
+fi
+
+if [ "$fail" -gt 0 ]; then
+    echo "Failed:$fail_list"
+    exit 1
+fi
diff --git a/src/test/golden/doc_browser/run_migration_loop.sh b/src/test/golden/doc_browser/run_migration_loop.sh
new file mode 100644
index 000000000..553d2c260
--- /dev/null
+++ b/src/test/golden/doc_browser/run_migration_loop.sh
@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+# Full migration loop — doc_browser (Linux, golden/).
+#
+set -euo pipefail
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$HERE/../../../.." && pwd)"
+# shellcheck disable=SC1091
+source "$REPO_ROOT/src/test/golden/harness/migration_loop_agent_reminder.sh"
+SKIP_SANITY="${SKIP_SANITY:-0}"
+SKIP_REVIEW="${SKIP_REVIEW:-0}"
+
+echo "=============================================="
+echo "doc_browser migration loop (Linux)"
+echo "=============================================="
+
+echo
+echo ">>> GATE 0 (MANDATORY): Runtime clean"
+if ! GATE=runtime IMPL=python "$HERE/run_all_goldens.sh"; then
+    echo "GATE 0 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 1 (MANDATORY): Behavioral"
+if ! GATE=behavioral IMPL=python "$HERE/run_all_goldens.sh"; then
+    echo "GATE 1 FAILED"
+    exit 1
+fi
+
+echo ">>> GATE 2 (MANDATORY): Pixel"
+if ! GATE=pixel IMPL=python "$HERE/run_all_goldens.sh"; then
+    if [ "${SKIP_PIXEL_GATE:-0}" = "1" ]; then
+        echo "GATE 2 FAILED — SKIP_PIXEL_GATE=1, continuing"
+    else
+        echo "GATE 2 FAILED"
+        exit 1
+    fi
+else
+    echo "GATE 2 PASSED"
+fi
+
+if [ "${SKIP_PIXEL_GATE:-0}" != "1" ]; then
+    if [ "$SKIP_SANITY" != "1" ]; then
+        echo "NOTE: GUI sanity is macOS-only for doc_browser; use run_gui_sanity_gate.sh on Mac."
+    fi
+    if [ "$SKIP_REVIEW" != "1" ]; then
+        echo ">>> REVIEW AGENT (conditional)"
+    fi
+fi
+
+echo
+echo ">>> GATE 3 (MANDATORY): Default launch"
+if ! GATE=default "$HERE/run_all_goldens.sh"; then
+    echo "GATE 3 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 4 (MANDATORY): Mu baseline integrity"
+if ! GATE=both IMPL=mu "$HERE/run_all_goldens.sh"; then
+    echo "GATE 4 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 5 (MANDATORY): Python unit tests"
+if ! GOLDEN_PKG_DIR="$HERE" "$REPO_ROOT/src/test/golden/harness/run_unit_tests.sh"; then
+    echo "GATE 5 FAILED"
+    exit 1
+fi
+
+echo "MIGRATION LOOP PASSED (Linux)"
diff --git a/src/test/golden/doc_browser/run_migration_loop_mac.sh b/src/test/golden/doc_browser/run_migration_loop_mac.sh
new file mode 100755
index 000000000..1888b0f2d
--- /dev/null
+++ b/src/test/golden/doc_browser/run_migration_loop_mac.sh
@@ -0,0 +1,107 @@
+#!/usr/bin/env bash
+# Full migration loop — doc_browser (macOS, golden-mac/).
+#
+# Usage:
+#   ./run_migration_loop_mac.sh
+#   SKIP_SANITY=1 ./run_migration_loop_mac.sh
+#   SKIP_REVIEW=1 ./run_migration_loop_mac.sh
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$HERE/../../../.." && pwd)"
+GOLDEN_PKG_DIR="$HERE"
+# shellcheck disable=SC1091
+source "$REPO_ROOT/src/test/golden/harness/migration_loop_agent_reminder.sh"
+SKIP_SANITY="${SKIP_SANITY:-0}"
+SKIP_REVIEW="${SKIP_REVIEW:-0}"
+
+echo "=============================================="
+echo "doc_browser migration loop (Mac)"
+echo "See: $REPO_ROOT/src/test/golden/VERIFICATION.md"
+echo "=============================================="
+
+echo
+echo ">>> GATE 0 (MANDATORY): Runtime clean"
+if ! GATE=runtime IMPL=python "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 0 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 1 (MANDATORY): Behavioral"
+if ! GATE=behavioral IMPL=python "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 1 FAILED"
+    exit 1
+fi
+
+echo ">>> GATE 2 (MANDATORY): Pixel"
+if ! GATE=pixel IMPL=python "$HERE/run_all_goldens_mac.sh"; then
+    if [ "${SKIP_PIXEL_GATE:-0}" = "1" ]; then
+        echo "GATE 2 FAILED — SKIP_PIXEL_GATE=1, continuing"
+    else
+        echo "GATE 2 FAILED"
+        exit 1
+    fi
+else
+    echo "GATE 2 PASSED"
+fi
+
+if [ "${SKIP_PIXEL_GATE:-0}" != "1" ]; then
+    if [ "$SKIP_SANITY" = "1" ]; then
+        echo "SKIP sanity (SKIP_SANITY=1)"
+    else
+        echo
+        echo ">>> SANITY (conditional): GUI real-display gate"
+        if ! "$HERE/run_gui_sanity_gate.sh"; then
+            echo "SANITY FAILED (behavioral)"
+            exit 1
+        fi
+    fi
+
+    if [ "$SKIP_REVIEW" = "1" ]; then
+        echo "SKIP review agent (SKIP_REVIEW=1)"
+    else
+        echo
+        echo ">>> REVIEW AGENT (conditional)"
+        PARENT="$(git -C "$REPO_ROOT" rev-parse HEAD~1 2>/dev/null || echo "")"
+        HEAD="$(git -C "$REPO_ROOT" rev-parse HEAD 2>/dev/null || echo "")"
+        echo "Review diff: $PARENT..$HEAD"
+        echo "Scope: src/plugins/rv-packages/doc_browser/*.py"
+        git -C "$REPO_ROOT" diff --name-only "$PARENT" HEAD -- \
+            'src/plugins/rv-packages/doc_browser/*.py' 2>/dev/null || true
+    fi
+fi
+
+echo
+echo ">>> GATE 3 (MANDATORY): Default launch"
+if ! GATE=default "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 3 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 4 (MANDATORY): Mu baseline integrity"
+if ! GATE=both IMPL=mu "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 4 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 5 (MANDATORY): Python unit tests"
+if ! GOLDEN_PKG_DIR="$HERE" "$REPO_ROOT/src/test/golden/harness/run_unit_tests.sh"; then
+    echo "GATE 5 FAILED"
+    exit 1
+fi
+
+echo
+echo "=============================================="
+echo "MIGRATION LOOP PASSED"
+echo "Confirm: sanity pixel review + code review (no blocking findings)."
+echo "Update COVERAGE.md; ask user about removing doc_browser.mu."
+echo "=============================================="
diff --git a/src/test/golden/doc_browser/scenarios/_db_common.py b/src/test/golden/doc_browser/scenarios/_db_common.py
new file mode 100644
index 000000000..827936611
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/_db_common.py
@@ -0,0 +1,238 @@
+#
+# Shared helpers for doc_browser golden scenarios.
+#
+# Copyright (C) 2026  Autodesk, Inc. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+from __future__ import annotations
+
+import os
+
+import rv.commands as rvc
+import rv.qtutils as qtutils
+from qt_scenario_utils import QtCore, QtWidgets, click_menu_action, pump
+
+MODE_RUNTIME_NAME = "doc_browser"
+HELP_MODE_NAME = "help"
+WINDOW_OBJECT_NAME = "docBrowser"
+SEARCH_EDIT_NAME = "searchEdit"
+HELP_MENU_BROWSER_ITEM = "   Mu Command API Browser..."
+# Stable symbols present in every RV Mu runtime (verified via harness diag).
+MODULE_SYMBOL = "commands"
+FUNCTION_SYMBOL = "commands.addSources"
+TYPE_MODULE = "rvtypes"
+TYPE_SYMBOL = "MinorMode"
+METHOD_SYMBOL = "init"
+CONSTANT_MODULE = "math"
+CONSTANT_SYMBOL = "pi"
+ASCIIDOC_MODULE = "asciidoc_to_html"
+DOC_BROWSER_MODULE = "doc_browser"
+WEBENGINE_SETTLE_MS = 1500
+# Pinned grab size — matches committed golden-mac/ PNG dimensions; avoids monitor/DPI drift.
+BROWSER_GRAB_W = 860
+BROWSER_GRAB_H = 1343
+
+
+def activate_doc_browser(log=None) -> None:
+    if log:
+        log("activateMode", MODE_RUNTIME_NAME)
+    rvc.activateMode(MODE_RUNTIME_NAME)
+    assert rvc.isModeActive(MODE_RUNTIME_NAME), f"{MODE_RUNTIME_NAME} not active"
+    pump(WEBENGINE_SETTLE_MS)
+
+
+def deactivate_doc_browser(log=None) -> None:
+    if log:
+        log("deactivateMode", MODE_RUNTIME_NAME)
+    rvc.deactivateMode(MODE_RUNTIME_NAME)
+    pump(400)
+    assert not rvc.isModeActive(MODE_RUNTIME_NAME), f"{MODE_RUNTIME_NAME} still active"
+
+
+def activate_via_help_menu(log=None) -> None:
+    """Help → Mu Command API Browser (COVERAGE §A2, ``openrv_help_menu`` caller path)."""
+    if rvc.isModeActive(MODE_RUNTIME_NAME):
+        deactivate_doc_browser(log=log)
+
+    win = qtutils.sessionWindow()
+    assert win is not None, "sessionWindow() is None"
+    menubar = win.menuBar()
+    help_menu = None
+    for action in menubar.actions():
+        if action.text().replace("&", "") == "Help":
+            help_menu = action.menu()
+            break
+
+    if help_menu is not None and menubar.isVisible():
+        click_menu_action(help_menu, HELP_MENU_BROWSER_ITEM.strip(), settle_ms=400)
+        pump(WEBENGINE_SETTLE_MS)
+        if log:
+            log("triggered Help menu item")
+    else:
+        # Headless / -nomb: no QMenuBar — activate doc_browser the same way the
+        # Help menu handler does (lazy load after ``help`` mode only is preloaded).
+        if log:
+            log("Help menu unavailable — activateMode (openrv_help_menu equivalent)")
+        rvc.activateMode(MODE_RUNTIME_NAME)
+        pump(WEBENGINE_SETTLE_MS)
+
+    assert rvc.isModeActive(MODE_RUNTIME_NAME), "doc_browser not active after Help path"
+
+
+def find_browser_window(log=None):
+    app = QtWidgets.QApplication.instance()
+    for widget in app.topLevelWidgets():
+        if widget.objectName() == WINDOW_OBJECT_NAME:
+            if log:
+                log("found browser window", widget.objectName(), widget.isVisible())
+            return widget
+    if log:
+        log(
+            "browser window not found; topLevelWidgets:",
+            [w.objectName() for w in app.topLevelWidgets()],
+        )
+    return None
+
+
+def find_doc_browser_widget(window, log=None):
+    if window is None:
+        return None
+    central = window.centralWidget()
+    if log:
+        log("central widget", type(central).__name__ if central else None)
+    return central
+
+
+def find_column_view(browser_widget, log=None):
+    if browser_widget is None:
+        return None
+    view = browser_widget.findChild(QtWidgets.QColumnView)
+    if log:
+        log("column view", view is not None)
+    return view
+
+
+def find_search_edit(window, log=None):
+    if window is None:
+        return None
+    search_widget = window.findChild(QtWidgets.QWidget, "searchWidget")
+    edit = None
+    if search_widget is not None:
+        edit = search_widget.findChild(QtWidgets.QLineEdit)
+    if edit is None:
+        edit = window.findChild(QtWidgets.QLineEdit, SEARCH_EDIT_NAME)
+    if log:
+        log("search edit", edit is not None)
+    return edit
+
+
+def find_toolbar_button(window, object_name: str, log=None):
+    if window is None:
+        return None
+    btn = window.findChild(QtWidgets.QToolButton, object_name)
+    if log:
+        log(f"toolbar {object_name}", btn is not None)
+    return btn
+
+
+def select_symbol_path(browser_widget, path: list[str], log=None) -> None:
+    """Walk ``QColumnView`` columns selecting ``path[0]``, ``path[1]``, …"""
+    from qt_scenario_utils import QtCore
+
+    column_view = find_column_view(browser_widget, log=log)
+    assert column_view is not None, "QColumnView not found"
+    model = column_view.model()
+    assert model is not None, "DocModel not attached"
+
+    parent = QtCore.QModelIndex()
+    for depth, name in enumerate(path):
+        found = None
+        for row in range(model.rowCount(parent)):
+            index = model.index(row, 0, parent)
+            if index.data() == name:
+                found = index
+                break
+        assert found is not None, f"symbol {name!r} not found at tree depth {depth}"
+        column_view.setCurrentIndex(found)
+        pump(WEBENGINE_SETTLE_MS)
+        parent = found
+
+    current = column_view.currentIndex()
+    assert current.isValid(), "column view has no current index after selection"
+    assert current.data() == path[-1], f"expected {path[-1]!r}, got {current.data()!r}"
+    if log:
+        log("selected path", "/".join(path))
+
+
+def select_symbol_by_display_name(browser_widget, display_name: str, log=None) -> None:
+    select_symbol_path(browser_widget, [display_name], log=log)
+
+
+def run_search(window, text: str, log=None) -> None:
+    edit = find_search_edit(window, log=log)
+    assert edit is not None, "search QLineEdit not found"
+    edit.setFocus()
+    edit.setText(text)
+    edit.returnPressed.emit()
+    pump(WEBENGINE_SETTLE_MS)
+    assert edit.text() == text, "search text not set"
+    if log:
+        log("search submitted", text)
+
+
+def navigate_mudoc_link(window, url: str, log=None) -> None:
+    """Navigate via ``mudoc://`` — uses search box (``DocBrowserMode.search`` path)."""
+    assert url.startswith("mudoc://"), f"expected mudoc URL, got {url!r}"
+    run_search(window, url, log=log)
+
+
+def click_toolbar_action(window, object_name: str, log=None) -> None:
+    from qt_scenario_utils import click_button
+
+    button = find_toolbar_button(window, object_name, log=log)
+    assert button is not None, f"toolbar button {object_name!r} not found"
+    click_button(button, settle_ms=WEBENGINE_SETTLE_MS)
+
+
+def hide_browser_window(log=None) -> None:
+    window = find_browser_window(log=log)
+    assert window is not None, "browser window not found"
+    window.close()
+    pump(WEBENGINE_SETTLE_MS)
+    if log:
+        log("closed browser window")
+
+
+def grab_browser_png(out_dir: str, log=None) -> tuple[bool, int, int]:
+    window = find_browser_window(log=log)
+    assert window is not None, "doc browser window not visible"
+    assert window.isVisible(), "doc browser window not visible"
+    browser = find_doc_browser_widget(window, log=log)
+    target = browser if browser is not None else window
+    # Pin logical layout; scale device-pixel grabs (Retina) to stable golden size.
+    target.setFixedSize(BROWSER_GRAB_W, BROWSER_GRAB_H)
+    pump(400)
+    path = os.path.join(out_dir, "browser.png")
+    pixmap = target.grab()
+    if pixmap.width() != BROWSER_GRAB_W or pixmap.height() != BROWSER_GRAB_H:
+        pixmap = pixmap.scaled(
+            BROWSER_GRAB_W,
+            BROWSER_GRAB_H,
+            QtCore.Qt.IgnoreAspectRatio,
+            QtCore.Qt.FastTransformation,
+        )
+    ok = pixmap.save(path, "PNG")
+    w, h = pixmap.width(), pixmap.height()
+    if log:
+        log("browser.png", ok, w, h, path)
+    assert ok and w == BROWSER_GRAB_W and h == BROWSER_GRAB_H, (
+        f"browser.png grab failed or wrong size ({w}x{h}, expected {BROWSER_GRAB_W}x{BROWSER_GRAB_H})"
+    )
+    return ok, w, h
+
+
+def save_session(out_dir: str, log=None) -> None:
+    path = os.path.join(out_dir, "session.rv")
+    if log:
+        log("saveSession", path)
+    rvc.saveSession(path, True, False, False)
diff --git a/src/test/golden/doc_browser/scenarios/db_activate.py b/src/test/golden/doc_browser/scenarios/db_activate.py
new file mode 100644
index 000000000..6a9868534
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_activate.py
@@ -0,0 +1,24 @@
+"""Scenario: activate doc browser — start/legend page (COVERAGE primary #1, §A1).
+
+Captures behavioral gate (empty session.rv) + browser.png pixel baseline.
+"""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+assert window is not None and window.isVisible(), "doc browser window not shown"
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_activate_help.py b/src/test/golden/doc_browser/scenarios/db_activate_help.py
new file mode 100644
index 000000000..e0d2b0ce2
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_activate_help.py
@@ -0,0 +1,29 @@
+"""Scenario: Help menu activates doc browser (COVERAGE §A2).
+
+Uses ``--menu-bar`` when Help is on the QMenuBar; otherwise falls back to the
+``modeManager.activateMode`` path from ``openrv_help_menu_mode.mu``.
+"""
+
+import os
+
+import rv.commands as rvc
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+if rvc.isModeActive(db.MODE_RUNTIME_NAME):
+    db.deactivate_doc_browser(log=log)
+
+db.activate_via_help_menu(log=log)
+assert rvc.isModeActive(db.MODE_RUNTIME_NAME)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_asciidoc_module.py b/src/test/golden/doc_browser/scenarios/db_asciidoc_module.py
new file mode 100644
index 000000000..69bcd731f
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_asciidoc_module.py
@@ -0,0 +1,24 @@
+"""Scenario: ``asciidoc_to_html`` module docs (COVERAGE §D1–D6 markup in module docstring)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_by_display_name(browser, db.ASCIIDOC_MODULE, log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_back_forward.py b/src/test/golden/doc_browser/scenarios/db_back_forward.py
new file mode 100644
index 000000000..15671991e
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_back_forward.py
@@ -0,0 +1,35 @@
+"""Scenario: back/forward toolbar history (COVERAGE §C4, §C5).
+
+Navigates start → ``commands`` → ``addSources``, back to module page (``browser.png``).
+"""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert window is not None and browser is not None
+
+db.select_symbol_path(browser, [db.MODULE_SYMBOL], log=log)
+db.select_symbol_path(browser, [db.MODULE_SYMBOL, "addSources"], log=log)
+db.click_toolbar_action(window, "backButton", log=log)
+
+column_view = db.find_column_view(browser, log=log)
+current = column_view.currentIndex().data()
+assert current == db.MODULE_SYMBOL, f"expected {db.MODULE_SYMBOL!r} after back, got {current!r}"
+if log:
+    log("after back, selection", current)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_deactivate.py b/src/test/golden/doc_browser/scenarios/db_deactivate.py
new file mode 100644
index 000000000..e78a8c86d
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_deactivate.py
@@ -0,0 +1,26 @@
+"""Scenario: deactivate doc browser (COVERAGE §A4)."""
+
+import os
+
+import rv.commands as rvc
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+assert window is not None and window.isVisible()
+
+db.grab_browser_png(out_dir, log=log)
+db.deactivate_doc_browser(log=log)
+assert not rvc.isModeActive(db.MODE_RUNTIME_NAME)
+
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_doc_browser_internals.py b/src/test/golden/doc_browser/scenarios/db_doc_browser_internals.py
new file mode 100644
index 000000000..f72d2f9d4
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_doc_browser_internals.py
@@ -0,0 +1,24 @@
+"""Scenario: browse ``doc_browser`` package internals (COVERAGE §B DocModel/DocBrowser classes)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_path(browser, [db.DOC_BROWSER_MODULE, "DocModel"], log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_link_nav.py b/src/test/golden/doc_browser/scenarios/db_link_nav.py
new file mode 100644
index 000000000..42a10970e
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_link_nav.py
@@ -0,0 +1,30 @@
+"""Scenario: ``mudoc://`` link to ``commands.addSources`` (COVERAGE primary #4, §B7).
+
+Selects the commands module first, then navigates via handleLink to a function doc page.
+"""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+MUDOC_URL = f"mudoc:///{db.FUNCTION_SYMBOL}"
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+assert window is not None
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_by_display_name(browser, db.MODULE_SYMBOL, log=log)
+db.navigate_mudoc_link(window, MUDOC_URL, log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_search.py b/src/test/golden/doc_browser/scenarios/db_search.py
new file mode 100644
index 000000000..5e8ba06f8
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_search.py
@@ -0,0 +1,26 @@
+"""Scenario: search for ``commands`` (COVERAGE primary #3, §C1).
+
+Pixel: search results page must differ from start page.
+"""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+assert window is not None
+
+db.run_search(window, db.MODULE_SYMBOL, log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_search_doc_match.py b/src/test/golden/doc_browser/scenarios/db_search_doc_match.py
new file mode 100644
index 000000000..d2fad5fdb
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_search_doc_match.py
@@ -0,0 +1,26 @@
+"""Scenario: search matches symbol documentation text (COVERAGE §C1 doc-match branch)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+# Appears in asciidoc_to_html module documentation, not necessarily in symbol names alone.
+SEARCH_DOC_TERM = "asciidoc"
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+assert window is not None
+
+db.run_search(window, SEARCH_DOC_TERM, log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_select_constant.py b/src/test/golden/doc_browser/scenarios/db_select_constant.py
new file mode 100644
index 000000000..3d7fb6e20
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_select_constant.py
@@ -0,0 +1,26 @@
+"""Scenario: select ``math.pi`` constant (COVERAGE §B symbolic constant)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_path(
+    browser, [db.CONSTANT_MODULE, db.CONSTANT_SYMBOL], log=log
+)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_select_function.py b/src/test/golden/doc_browser/scenarios/db_select_function.py
new file mode 100644
index 000000000..affb45ce4
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_select_function.py
@@ -0,0 +1,24 @@
+"""Scenario: select ``commands.addSources`` function (COVERAGE §B5)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_path(browser, [db.MODULE_SYMBOL, "addSources"], log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_select_method.py b/src/test/golden/doc_browser/scenarios/db_select_method.py
new file mode 100644
index 000000000..ff0674df7
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_select_method.py
@@ -0,0 +1,26 @@
+"""Scenario: select ``rvtypes.MinorMode.init`` method (COVERAGE §B5 method table)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_path(
+    browser, [db.TYPE_MODULE, db.TYPE_SYMBOL, db.METHOD_SYMBOL], log=log
+)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_select_symbol.py b/src/test/golden/doc_browser/scenarios/db_select_symbol.py
new file mode 100644
index 000000000..cfc8b65ae
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_select_symbol.py
@@ -0,0 +1,28 @@
+"""Scenario: select ``commands`` module in tree (COVERAGE primary #2, §B3).
+
+Pixel: module documentation page must differ from start page.
+"""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+assert window is not None
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_by_display_name(browser, db.MODULE_SYMBOL, log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_select_type.py b/src/test/golden/doc_browser/scenarios/db_select_type.py
new file mode 100644
index 000000000..29e65a2d9
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_select_type.py
@@ -0,0 +1,24 @@
+"""Scenario: select ``rvtypes.MinorMode`` type page (COVERAGE §B6)."""
+
+import os
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+window = db.find_browser_window(log=log)
+browser = db.find_doc_browser_widget(window, log=log)
+assert browser is not None
+
+db.select_symbol_path(browser, [db.TYPE_MODULE, db.TYPE_SYMBOL], log=log)
+
+db.grab_browser_png(out_dir, log=log)
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/doc_browser/scenarios/db_window_hide.py b/src/test/golden/doc_browser/scenarios/db_window_hide.py
new file mode 100644
index 000000000..62cdb7f89
--- /dev/null
+++ b/src/test/golden/doc_browser/scenarios/db_window_hide.py
@@ -0,0 +1,23 @@
+"""Scenario: closing browser window toggles mode off (COVERAGE §A5)."""
+
+import os
+
+import rv.commands as rvc
+
+import _db_common as db
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+db.activate_doc_browser(log=log)
+db.grab_browser_png(out_dir, log=log)
+db.hide_browser_window(log=log)
+assert not rvc.isModeActive(db.MODE_RUNTIME_NAME), "mode still active after window close"
+
+db.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/harness/compare.py b/src/test/golden/harness/compare.py
new file mode 100644
index 000000000..fa85bc492
--- /dev/null
+++ b/src/test/golden/harness/compare.py
@@ -0,0 +1,305 @@
+#!/usr/bin/env python3
+"""Comparators for golden tests: behavioral (GTO node graph) and pixel (PNG).
+
+Behavioral gate:
+    Normalize a captured text-GTO session and compare it byte-for-byte against
+    the stored golden. Normalization removes environment-specific noise (absolute
+    paths, a few volatile session-header fields) so the same graph compares equal
+    across machines/checkouts. The default (empty) session is already
+    byte-identical run-to-run, so normalization is a no-op there; the hooks exist
+    for later media-bearing scenarios.
+
+Pixel gate:
+    Thin wrapper over the built `rmsImageDiff -cmp -dmax ` tool (whole-image,
+    no ROI). Gate at 0 (exact) on the pinned Xvfb + software-Mesa path.
+
+CLI:
+    compare.py --golden-dir DIR --actual-dir DIR [--dmax 0]
+Expects `session.rv` in each dir; compares `panel.png` too if present in both.
+"""
+
+import argparse
+import os
+import re
+import subprocess
+import sys
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+REPO_ROOT = os.path.abspath(os.path.join(_HERE, "..", "..", "..", ".."))
+
+
+def _find_rms_image_diff() -> str:
+    """Locate the built rmsImageDiff binary across staging layouts.
+
+    Linux stages flat under app/bin/; the macOS build only stages inside the
+    .app bundle (verified 2026-07-24: no app/bin/ exists on a Mac build at
+    all). RMS_IMAGE_DIFF overrides both for a nonstandard layout.
+    """
+    override = os.environ.get("RMS_IMAGE_DIFF")
+    if override:
+        return override
+    candidates = [
+        os.path.join(REPO_ROOT, "_build", "stage", "app", "bin", "rmsImageDiff"),
+        os.path.join(REPO_ROOT, "_build", "stage", "app", "RV.app", "Contents", "MacOS", "rmsImageDiff"),
+    ]
+    for c in candidates:
+        if os.path.isfile(c):
+            return c
+    return candidates[0]  # preserve prior default for the "not found" error message
+
+
+RMS_IMAGE_DIFF = _find_rms_image_diff()
+
+# Session-header properties that reflect UI/playback state rather than graph
+# structure; drop whole GTO property lines whose name matches, so they can't
+# cause spurious behavioral diffs.
+_VOLATILE_PROP_RE = re.compile(r"^\s*(string sessionName|int currentFrame|int\[\] marks)\b")
+# sRGB2linear is set by source_setup / rendering path (Xvfb vs real GPU), not
+# by session_manager graph logic. Only relaxed for the GUI sanity gate, which
+# compares real-display output against Linux Xvfb-captured golden/ baselines
+# that predate GOLDEN_SOURCE_SETUP=1 -- see run_gui_sanity_gate.sh.
+_RENDER_PATH_PROP_RE = re.compile(r"^\s*int (sRGB2linear|Rec709ToLinear)\b")
+# Absolute media paths vary by machine; canonicalize to a stable token.
+_MOVIE_LINE_RE = re.compile(r'^(\s*string movie = ")([^"]+)("\s*)$')
+_FIXTURE_SUFFIX = "/src/test/golden/session_manager/fixtures/"
+_SESSION_BLOCK_START = re.compile(r"^\s{4}session\s*$")
+_SESSION_BLOCK_END = re.compile(r"^\s{4}\}\s*$")
+
+
+def _canonicalize_movie_path(path: str) -> str:
+    """Map any checkout's absolute fixture path to a stable /... token."""
+    if path in ("", ""):
+        return path
+    if path.endswith(".mp4") or path.endswith(".mov"):
+        return ""
+    if path.endswith(".exr"):
+        return ""
+    idx = path.find("/src/test/golden/layer_select/fixtures/")
+    if idx >= 0:
+        return "" + path[idx:]
+    idx = path.find(_FIXTURE_SUFFIX)
+    if idx >= 0:
+        return "" + path[idx:]
+    home = os.path.expanduser("~")
+    return path.replace(REPO_ROOT, "").replace(home, "")
+
+
+def normalize_gto(
+    text: str,
+    *,
+    relax_render_path: bool = False,
+    relax_session_playback: bool = False,
+) -> str:
+    """Return a canonical form of a text-GTO session for comparison."""
+    out_lines = []
+    in_session_block = False
+    session_depth = 0
+    for line in text.splitlines():
+        if _VOLATILE_PROP_RE.match(line):
+            continue
+        if relax_render_path and _RENDER_PATH_PROP_RE.match(line):
+            continue
+        if _SESSION_BLOCK_START.match(line):
+            in_session_block = True
+            session_depth = 0
+            out_lines.append(line)
+            continue
+        if in_session_block and relax_session_playback:
+            if line.strip() == "{":
+                session_depth += 1
+                out_lines.append(line)
+                continue
+            if line.strip() == "}":
+                session_depth -= 1
+                if session_depth <= 0:
+                    in_session_block = False
+                    session_depth = 0
+                out_lines.append(line)
+                continue
+            if session_depth == 1 and re.match(
+                r"^\s{8}(string viewNode|int\[2\] range|int\[2\] region|float fps)\b", line
+            ):
+                continue
+        elif in_session_block and line.strip() == "}":
+            in_session_block = False
+            session_depth = 0
+        m = _MOVIE_LINE_RE.match(line)
+        if m:
+            canon = _canonicalize_movie_path(m.group(2))
+            line = "%s%s%s" % (m.group(1), canon, m.group(3))
+        else:
+            home = os.path.expanduser("~")
+            line = line.replace(REPO_ROOT, "").replace(home, "")
+        out_lines.append(line)
+    return "\n".join(out_lines) + "\n"
+
+
+def compare_gto(
+    golden_path: str,
+    actual_path: str,
+    *,
+    relax_render_path: bool = False,
+    relax_session_playback: bool = False,
+) -> tuple[bool, str]:
+    norm_kw = {
+        "relax_render_path": relax_render_path,
+        "relax_session_playback": relax_session_playback,
+    }
+    with open(golden_path, "r") as f:
+        g = normalize_gto(f.read(), **norm_kw)
+    with open(actual_path, "r") as f:
+        a = normalize_gto(f.read(), **norm_kw)
+    if g == a:
+        return True, "behavioral: MATCH"
+    # Produce a short unified diff for the report.
+    import difflib
+
+    diff = "\n".join(
+        difflib.unified_diff(
+            g.splitlines(),
+            a.splitlines(),
+            fromfile="golden",
+            tofile="actual",
+            lineterm="",
+            n=2,
+        )
+    )
+    return False, "behavioral: MISMATCH\n" + diff
+
+
+def compare_png(golden_png: str, actual_png: str, dmax: float) -> tuple[bool, str]:
+    if not os.path.isfile(RMS_IMAGE_DIFF):
+        return False, f"pixel: rmsImageDiff not found at {RMS_IMAGE_DIFF}"
+    # Parse stdout's verdict line. The exit code is NOT usable: rmsImageDiff -cmp
+    # exits 0 for a mismatch as well as a match -- it only returns non-zero when it
+    # cannot read or compare the files at all (e.g. 255 for "channel size does not
+    # match"). An ad-hoc `rmsImageDiff -cmp ... && echo same` therefore reports every
+    # mismatch as a match, which is exactly how a real pixel-gate failure got
+    # misread as flakiness once. Check for "Images are matched." and nothing else.
+    #
+    # Do not pass -m alongside -cmp: in the per-pixel loop, -m's branch shadows
+    # -cmp's comparison entirely, so the dmax check would never run.
+    proc = subprocess.run(
+        [RMS_IMAGE_DIFF, "-cmp", "-dmax", str(dmax), golden_png, actual_png],
+        capture_output=True,
+        text=True,
+    )
+    stdout = proc.stdout.strip()
+    ok = "Images are matched." in stdout
+    return ok, f"pixel: {'MATCH' if ok else 'MISMATCH'} (dmax={dmax})\n{stdout}"
+
+
+def report_png(golden_png: str, actual_png: str) -> str:
+    """Non-gating pixel report: RMS + max-diff location/values, no verdict.
+
+    Used by the GUI sanity gate, which has no scripted pixel pass/fail --
+    real GPU/font/compositor rendering is never byte-identical to the pinned
+    Xvfb+software-Mesa goldens, so a threshold here would either mask real
+    regressions (too loose) or flag rendering noise as failures forever (too
+    tight). Instead this prints quantitative info plus both PNG paths for a
+    human or an AI reviewer to look at and judge -- see
+    ../VERIFICATION.md#gui-sanity-gate-real-display.
+    """
+    if not os.path.isfile(RMS_IMAGE_DIFF):
+        return f"pixel: rmsImageDiff not found at {RMS_IMAGE_DIFF}"
+    proc = subprocess.run(
+        [RMS_IMAGE_DIFF, "-m", golden_png, actual_png],
+        capture_output=True,
+        text=True,
+    )
+    stdout = proc.stdout.strip()
+    return f"pixel: INFO (no threshold -- review required)\n{stdout}\ngolden={golden_png}\nactual={actual_png}"
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser(description=__doc__)
+    ap.add_argument("--golden-dir", required=True, help="Pixel baseline dir (and behavioral if --behavioral-golden-dir omitted)")
+    ap.add_argument(
+        "--behavioral-golden-dir",
+        default=None,
+        help="Behavioral session.rv baseline (defaults to --golden-dir). GUI sanity "
+        "gate on macOS passes golden-mac/ here while pixel report still uses golden/.",
+    )
+    ap.add_argument("--actual-dir", required=True)
+    ap.add_argument("--dmax", type=float, default=0.0)
+    ap.add_argument(
+        "--pixel-mode",
+        choices=("gate", "report"),
+        default="gate",
+        help="gate (default): -cmp at --dmax, a mismatch fails the run (used by "
+        "run_all_goldens.sh). report: no threshold, no verdict -- print RMS/"
+        "max-diff + both PNG paths for a human/AI to judge (used by "
+        "run_gui_sanity_gate.sh); never contributes to the exit code.",
+    )
+    ap.add_argument(
+        "--relax-render-path",
+        action="store_true",
+        help="Drop int sRGB2linear lines (GUI sanity gate only -- real GPU vs Xvfb "
+        "baseline drift, not session_manager graph logic).",
+    )
+    ap.add_argument(
+        "--relax-session-playback",
+        action="store_true",
+        help="Drop session-block viewNode/range/region (GUI sanity gate only -- "
+        "Linux-vs-Mac capture timing drift, not graph structure).",
+    )
+    args = ap.parse_args()
+    relax_render_path = args.relax_render_path or os.environ.get("COMPARE_RELAX_RENDER_PATH") == "1"
+    relax_session_playback = (
+        args.relax_session_playback or os.environ.get("COMPARE_RELAX_SESSION_PLAYBACK") == "1"
+    )
+
+    results = []
+    ok_all = True
+
+    behavioral_golden = args.behavioral_golden_dir or args.golden_dir
+    g_sess = os.path.join(behavioral_golden, "session.rv")
+    a_sess = os.path.join(args.actual_dir, "session.rv")
+    if os.path.isfile(g_sess) and os.path.isfile(a_sess):
+        ok, msg = compare_gto(
+            g_sess,
+            a_sess,
+            relax_render_path=relax_render_path,
+            relax_session_playback=relax_session_playback,
+        )
+        ok_all &= ok
+        results.append(msg)
+    else:
+        ok_all = False
+        results.append(
+            f"behavioral: missing session.rv (golden={os.path.isfile(g_sess)}, actual={os.path.isfile(a_sess)})"
+        )
+
+    # Compare every PNG artifact present in the golden dir (not just
+    # panel.png -- popup-menu scenarios grab their own top-level window,
+    # e.g. configmenu.png). A golden PNG with no matching actual PNG is a
+    # hard FAIL, not a silently-skipped gate, in BOTH modes: a broken port
+    # that can't find the widget (and so never writes the artifact) must not
+    # pass, even under the report-only GUI sanity gate -- whether the artifact
+    # exists at all is objective, only its pixel content is left to review.
+    golden_pngs = (
+        sorted(f for f in os.listdir(args.golden_dir) if f.endswith(".png")) if os.path.isdir(args.golden_dir) else []
+    )
+    for name in golden_pngs:
+        g_png = os.path.join(args.golden_dir, name)
+        a_png = os.path.join(args.actual_dir, name)
+        if not os.path.isfile(a_png):
+            ok_all = False
+            results.append(f"pixel: missing actual {name} (golden exists)")
+            continue
+        if args.pixel_mode == "report":
+            results.append(f"[{name}] {report_png(g_png, a_png)}")
+        else:
+            ok, msg = compare_png(g_png, a_png, args.dmax)
+            ok_all &= ok
+            results.append(f"[{name}] {msg}")
+    # (If the golden dir has no PNGs at all, the pixel gate simply isn't
+    # exercised for this scenario.)
+
+    print("\n".join(results))
+    print("RESULT:", "PASS" if ok_all else "FAIL")
+    return 0 if ok_all else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/src/test/golden/harness/golden_bootstrap.py b/src/test/golden/harness/golden_bootstrap.py
new file mode 100644
index 000000000..480710259
--- /dev/null
+++ b/src/test/golden/harness/golden_bootstrap.py
@@ -0,0 +1,47 @@
+#
+# In-RV bootstrap for golden scenarios (imported from run_scenario.py -pyeval wrapper).
+#
+# Ensures immediate modes used by session_manager goldens are active before the
+# scenario script runs.  RV loads these at state-initialized but they start
+# inactive in headless -pyeval runs, so color setup and other handlers never fire.
+#
+# Copyright (C) 2026  Autodesk, Inc. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+import os
+
+
+def ensure_source_setup() -> None:
+    """Activate the source_setup minor mode (idempotent)."""
+    try:
+        import source_setup
+
+        source_setup.createMode()
+    except Exception:
+        pass
+
+
+def ensure_local_thumbnail_gen() -> None:
+    """Ensure local_thumbnail_gen is registered and active (idempotent)."""
+    try:
+        import local_thumbnail_gen
+
+        local_thumbnail_gen.createMode()
+        import rv.commands as rvc
+
+        if not rvc.isModeActive("local_thumbnail_gen"):
+            rvc.activateMode("local_thumbnail_gen")
+    except Exception:
+        pass
+
+
+def bootstrap_from_env() -> None:
+    if os.environ.get("GOLDEN_SOURCE_SETUP", "0") == "1":
+        ensure_source_setup()
+    # Default off: session_manager.activate() ensures local_thumbnail_gen.
+    # Set GOLDEN_THUMBNAIL_GEN=1 only to test the legacy bootstrap path.
+    if os.environ.get("GOLDEN_THUMBNAIL_GEN", "0") == "1":
+        ensure_local_thumbnail_gen()
+
+
+bootstrap_from_env()
diff --git a/src/test/golden/harness/migration_loop_agent_reminder.sh b/src/test/golden/harness/migration_loop_agent_reminder.sh
new file mode 100755
index 000000000..f31dea845
--- /dev/null
+++ b/src/test/golden/harness/migration_loop_agent_reminder.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+# Printed at the start of every ./run_migration_loop*.sh invocation.
+# The shell does not parse VERIFICATION.md or COVERAGE.md — this reminds the agent to.
+#
+# Usage (from run_migration_loop*.sh):
+#   GOLDEN_PKG_DIR="$HERE" source "$REPO_ROOT/src/test/golden/harness/migration_loop_agent_reminder.sh"
+#
+set -euo pipefail
+
+_GOLDEN_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+_PKG_DIR="${GOLDEN_PKG_DIR:-$(pwd)}"
+_VERIFICATION="$_GOLDEN_ROOT/VERIFICATION.md"
+_COVERAGE="$_PKG_DIR/COVERAGE.md"
+
+echo
+echo ">>> AGENT (mandatory — scripts do NOT enforce this; you must):"
+echo "    0. Loop purpose: drive migration with /loop — re-run the migration prompt each tick"
+echo "       until VERIFICATION.md Definition of done (see skill §5)."
+echo "    1. Start of migration session: read ALL of $_VERIFICATION once."
+echo "    2. EVERY loop iteration (including this run): read $_COVERAGE"
+echo "       — Primary outcomes table first, then statuses (no unjustified 🟡/⬜)."
+echo "       — Mu methods → Python unit tests table: no ⬜ at migration done (gate 5)."
+echo "    3. Loop procedure: .agents/skills/mu-python-migration/SKILL.md §5"
+echo "    4. Loop exit 0 ≠ migration done until VERIFICATION.md Definition of done."
+echo
+
+if [ ! -f "$_COVERAGE" ]; then
+    echo "WARNING: missing $_COVERAGE — create from COVERAGE.template.md before looping."
+else
+    if ! grep -q '^## Primary outcomes' "$_COVERAGE" 2>/dev/null; then
+        echo "WARNING: $_COVERAGE has no '## Primary outcomes' section — see VERIFICATION.md."
+    fi
+    if ! grep -q '^## Mu methods' "$_COVERAGE" 2>/dev/null; then
+        echo "WARNING: $_COVERAGE has no '## Mu methods' section — gate 5 requires it (see VERIFICATION.md)."
+    fi
+fi
+
+echo "    COVERAGE: $_COVERAGE"
+echo "    VERIFY:   $_VERIFICATION"
+echo
diff --git a/src/test/golden/harness/qt_scenario_utils.py b/src/test/golden/harness/qt_scenario_utils.py
new file mode 100644
index 000000000..16885c34e
--- /dev/null
+++ b/src/test/golden/harness/qt_scenario_utils.py
@@ -0,0 +1,189 @@
+#
+# Shared Qt helpers for in-RV golden scenarios (package-agnostic).
+#
+# Every scenario needs the same handful of things: a Qt binding that works on
+# both Qt5 and Qt6 builds, a way to pump the event loop (``-pyeval`` runs
+# before QCoreApplication::exec(), so nothing paints on its own), and now a
+# way to drive *real* widgets with synthetic input instead of calling the
+# command each widget is wired to. Plain clicks (QTest.mouseClick) are not
+# subject to the drag/drop limitation documented in COVERAGE.md section G
+# (synthesized QDropEvents have a null source()) -- only the drag *gesture*
+# is blocked headlessly, so button/menu clicks are a genuine way to exercise
+# the real UI trigger rather than just pinning its outcome.
+#
+# Copyright (C) 2026  Autodesk, Inc. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+from __future__ import annotations
+
+import time
+
+try:
+    from PySide6 import QtWidgets, QtCore, QtGui, QtTest
+    import shiboken6 as shiboken  # noqa: F401  (parity with existing scenarios)
+
+    QTest = QtTest.QTest
+except ImportError:  # pragma: no cover - older Qt
+    from PySide2 import QtWidgets, QtCore, QtGui, QtTest
+    import shiboken2 as shiboken  # noqa: F401
+
+    QTest = QtTest.QTest
+
+
+def pump(ms: int) -> None:
+    """Pump the Qt event loop for ~ms without a bare sleep."""
+    app = QtWidgets.QApplication.instance()
+    end = time.time() + ms / 1000.0
+    while time.time() < end:
+        app.processEvents(QtCore.QEventLoop.AllEvents, 20)
+
+
+def click_button(button, settle_ms: int = 300) -> None:
+    """Synthesize a real left-click on a QAbstractButton (or subclass).
+
+    Fails loudly on a missing/hidden/disabled target rather than silently
+    no-op'ing -- a scenario that can't find the real widget must not report
+    a pass, since that would mean the button was never actually exercised.
+    """
+    if button is None:
+        raise AssertionError("click_button: target widget is None")
+    if not button.isVisible():
+        raise AssertionError(f"click_button: {button.objectName()!r} is not visible")
+    if not button.isEnabled():
+        raise AssertionError(f"click_button: {button.objectName()!r} is not enabled")
+    QTest.mouseClick(button, QtCore.Qt.LeftButton)
+    pump(settle_ms)
+
+
+def open_tool_button_menu(button, settle_ms: int = 300):
+    """Show a QToolButton's attached QMenu without relying on InstantPopup click tracking.
+
+    Raises if the button has no menu attached -- that's a wiring change the
+    scenario must catch, not silently skip.
+
+    Uses ``QMenu.popup()`` at the button's global position instead of synthesizing
+    a tool-button click.  Empirically, ``QTest.mouseClick`` on InstantPopup buttons
+    can hang or never show the menu under Xvfb (especially after a prior killed RV
+    process); ``popup()`` is deterministic headlessly.
+    """
+    if button is None:
+        raise AssertionError("open_tool_button_menu: target widget is None")
+    if not button.isVisible():
+        raise AssertionError(f"open_tool_button_menu: {button.objectName()!r} is not visible")
+    if not button.isEnabled():
+        raise AssertionError(f"open_tool_button_menu: {button.objectName()!r} is not enabled")
+    menu = button.menu()
+    if menu is None:
+        raise AssertionError(
+            f"open_tool_button_menu: {button.objectName()!r} has no menu() attached"
+        )
+    menu.popup(button.mapToGlobal(button.rect().bottomLeft()))
+    pump(settle_ms)
+    return menu
+
+
+def click_menu_action(menu, text: str, settle_ms: int = 250) -> None:
+    """Click the QAction in ``menu`` whose (accelerator-stripped) text matches.
+
+    Raises if not found, listing available actions -- a renamed/removed menu
+    item must break the scenario, not vanish quietly.
+    """
+    if menu is None:
+        raise AssertionError("click_menu_action: menu is None")
+    pump(settle_ms)
+    target = None
+    for action in menu.actions():
+        if action.text().replace("&", "") == text:
+            target = action
+            break
+    if target is None:
+        available = [a.text() for a in menu.actions()]
+        raise AssertionError(
+            f"click_menu_action: no action {text!r} found; available: {available}"
+        )
+    # trigger() is reliable headlessly; mouseClick on menu actionGeometry often
+    # misses under Xvfb and leaves graph mutations (setViewNode, etc.) undone.
+    target.trigger()
+    pump(settle_ms)
+
+
+def clear_hover(widget) -> None:
+    """Drop mouse-hover state from ``widget`` and everything under it.
+
+    ``QWidget.grab()`` renders the widget's *current* state, and hover is part of
+    that state: the tree row under the physical pointer paints with the hover
+    highlight, and a toolbar button under it paints raised. The pointer is wherever
+    the person running the capture happened to leave it, so a grab that does not
+    clear hover makes the PNG depend on that.
+
+    This is not hypothetical — it is what a pixel-gate failure across 20 of 37
+    scenarios turned out to be. The same scenario put an extra highlight on
+    ``OTHER`` in one run and on ``Default Stack`` in the next, with the port
+    unchanged in between. Clearing hover before every grab makes the PNGs a
+    function of the session alone.
+
+    Two mechanisms have to be cleared, because Qt sources ``State_MouseOver`` from
+    different places depending on the widget. An item view keeps a private hover
+    *index*, set on ``HoverMove`` and cleared on ``HoverLeave`` — that is the tree row
+    highlight. A button instead reads ``QWidget::underMouse()``, i.e. the
+    ``WA_UnderMouse`` attribute, which Qt normally clears when it delivers ``Leave``.
+    Clearing only the first left a 2/255 difference on one pixel of the inputs
+    panel's trash button, which the capture script's double-run caught as
+    non-determinism.
+
+    The widget list comes from ``QApplication.allWidgets()``, not from
+    ``widget.findChildren()``. That is not a stylistic choice: calling
+    ``findChildren()`` on the panel is enough on its own to leave the caller's
+    QTreeView reference dead with "Internal C++ object already deleted" — verified by
+    reducing this function to the bare enumeration, which still killed six
+    scenarios. The panel is reached through ``wrapInstance``, and minting a second
+    set of wrappers inside that tree invalidates the first. ``allWidgets()`` is what
+    every accessor in ``_sm_common`` already uses to find the panel's widgets, and it
+    does not have the problem.
+    """
+    if widget is None:
+        return
+
+    app = QtWidgets.QApplication.instance()
+    outside = QtCore.QPointF(-1.0, -1.0)
+
+    for w in QtWidgets.QApplication.allWidgets():
+        w.setAttribute(QtCore.Qt.WA_UnderMouse, False)
+        app.sendEvent(
+            w,
+            QtGui.QHoverEvent(QtCore.QEvent.HoverLeave, outside, outside),
+        )
+
+
+def opaque_rgb(pixmap):
+    """A pixmap as a plain 8-bit RGB image, with no alpha channel.
+
+    Whether ``QWidget.grab()`` hands back a pixmap with alpha depends on Qt's
+    opacity heuristics for the widget tree, and those are not stable across runs:
+    the same panel produced an RGB PNG one run and an RGBA one the next, which
+    rmsImageDiff refuses outright with "channel size does not match" rather than
+    reporting a pixel difference. The panel is opaque, so the alpha channel carries
+    nothing — fixing the format here makes the comparison well defined instead of
+    dependent on that heuristic.
+    """
+    return pixmap.toImage().convertToFormat(QtGui.QImage.Format_RGB888)
+
+
+def grab_widget_png(widget, path: str, settle_ms: int = 400):
+    """Pump, grab ``widget`` to a PNG, and return (ok, width, height).
+
+    Raises if the save fails outright (bad path etc.); a False ``ok`` from
+    QPixmap.save is still returned to the caller to log, since a 0x0 grab is
+    a real signal something's wrong with the widget, not a harness bug.
+    """
+    if widget is None:
+        raise AssertionError("grab_widget_png: widget is None")
+    if not widget.isVisible():
+        widget.show()
+    pump(settle_ms)
+    clear_hover(widget)
+    pump(50)
+    pixmap = widget.grab()
+    image = opaque_rgb(pixmap)
+    ok = image.save(path, "PNG")
+    return ok, image.width(), image.height()
diff --git a/src/test/golden/harness/run_scenario.py b/src/test/golden/harness/run_scenario.py
new file mode 100644
index 000000000..144ddd632
--- /dev/null
+++ b/src/test/golden/harness/run_scenario.py
@@ -0,0 +1,449 @@
+#!/usr/bin/env python3
+"""Outer runner for golden tests.
+
+Launches the real RV application headless (Xvfb + software Mesa), executes an
+in-process *scenario* (a Python file run inside RV via ``-pyeval`` with the
+``rv.commands`` API available), and collects the artifacts the scenario writes
+into an output directory.
+
+Why it is shaped this way (all learned empirically on 2026-07-21):
+  * RV needs an OpenGL/GLX context at startup; ``QT_QPA_PLATFORM=offscreen``
+    segfaults, so we run under ``xvfb-run`` with ``LIBGL_ALWAYS_SOFTWARE=1``
+    (software Mesa / llvmpipe) which is also deterministic for the pixel gate.
+  * RV redirects stdout to its own log, so scenarios must write results to
+    explicit files under ``$GOLDEN_OUT`` rather than printing them.
+  * ``close()`` does not quit a windowless app, so the scenario must end the
+    process itself; this runner wraps every scenario so it always ``os._exit``s.
+
+Usage:
+    run_scenario.py --scenario PATH --out DIR [--rv PATH] [--timeout N]
+    [--impl mu|python] [--mode MODE[,MODE...]] [--package PKG[,PKG...]]
+"""
+
+import argparse
+import os
+import shutil
+import subprocess
+import sys
+
+from runtime_log_check import check_runtime_delta, signatures_from_out_dir
+
+# Repo root = five levels up from this file
+#   src/test/golden/harness/run_scenario.py -> 
+_HERE = os.path.dirname(os.path.abspath(__file__))
+REPO_ROOT = os.path.abspath(os.path.join(_HERE, "..", "..", "..", ".."))
+DEFAULT_RV = os.path.join(REPO_ROOT, "_build", "stage", "app", "bin", "rv")
+MODE_IMPL_ENV_PREFIX = "RV_MODE_IMPL_"
+SESSION_MANAGER_PKG = "session_manager"
+# Edit/stack/switch modes ship inside the session_manager package directory.
+SESSION_MANAGER_SIBLING_MODES = {
+    "Composite_edit_mode",
+    "FolderGroup_edit_mode",
+    "LayoutGroup_edit_mode",
+    "RetimeGroup_edit_mode",
+    "SequenceGroup_edit_mode",
+    "SourceGroup_edit_mode",
+    "Stack_edit_mode",
+    "StackGroup_edit_mode",
+    "Switch_edit_mode",
+    "SwitchGroup_edit_mode",
+    "transform_manip",
+}
+SESSION_MANAGER_ALL_MODES = [SESSION_MANAGER_PKG] + sorted(SESSION_MANAGER_SIBLING_MODES)
+LAYER_SELECT_PKG = "layer_select"
+
+
+def package_dir_for_mode(mode_name: str) -> str | None:
+    """Map an RV mode name to its package source directory on PYTHONPATH."""
+    direct = os.path.join(REPO_ROOT, "src", "plugins", "rv-packages", mode_name)
+    if os.path.isdir(direct):
+        return direct
+    sm_pkg = os.path.join(REPO_ROOT, "src", "plugins", "rv-packages", SESSION_MANAGER_PKG)
+    if mode_name in SESSION_MANAGER_SIBLING_MODES or mode_name == SESSION_MANAGER_PKG:
+        if os.path.isdir(sm_pkg):
+            return sm_pkg
+    return None
+
+
+def stage_python_modes(pkg_dirs: list[str], stage_py_dirs: list[str]) -> None:
+    """Copy each package's Python modes into the staged app bundle.
+
+    A Python mode can only find its .ui/.png assets when it is imported from the
+    staged PlugIns/Python: MinorMode.supportPath() derives the asset directory
+    from the loaded module's __file__, and only the staged tree has a sibling
+    PlugIns/SupportFiles//. Without this, a gate would either fail on
+    missing assets or silently test whatever .py was last installed by rvpkg
+    rather than the working tree. Set RV_GOLDEN_NO_STAGE_SYNC=1 to skip.
+    """
+    if os.environ.get("RV_GOLDEN_NO_STAGE_SYNC", "0") == "1" or not stage_py_dirs:
+        return
+
+    for pkg_dir in pkg_dirs:
+        sources = sorted(n for n in os.listdir(pkg_dir) if n.endswith(".py"))
+
+        for name in sources:
+            src = os.path.join(pkg_dir, name)
+            for stage_py in stage_py_dirs:
+                dst = os.path.join(stage_py, name)
+                if not os.path.exists(dst) or os.path.getmtime(src) > os.path.getmtime(dst):
+                    shutil.copy2(src, dst)
+
+        #
+        #  Copying alone is not enough. The staged directories precede the package
+        #  directories on PYTHONPATH, so a module deleted or renamed in the working
+        #  tree would keep loading from its last staged copy — and every gate would
+        #  pass against code that is no longer in the tree, which is exactly the
+        #  failure this function exists to prevent. Anything staged for this package
+        #  that no longer has a source is removed.
+        #
+        #  Scoped to names this package has staged before (tracked in a manifest) so
+        #  a shared staged directory keeps other packages' modules.
+        #
+        for stage_py in stage_py_dirs:
+            manifest = os.path.join(stage_py, ".golden_staged_%s" % os.path.basename(pkg_dir))
+            previous: set[str] = set()
+            if os.path.exists(manifest):
+                with open(manifest) as fh:
+                    previous = {line.strip() for line in fh if line.strip()}
+
+            for orphan in sorted(previous - set(sources)):
+                stale = os.path.join(stage_py, orphan)
+                if os.path.exists(stale):
+                    os.remove(stale)
+                    print("[run_scenario] un-staged %s (no longer in %s)"
+                          % (orphan, pkg_dir))
+
+            with open(manifest, "w") as fh:
+                fh.write("\n".join(sources) + "\n")
+
+
+def apply_mode_impl(env: dict[str, str], modes: list[str], impl: str) -> None:
+    """Set per-mode impl env vars."""
+    for name in modes:
+        env[f"{MODE_IMPL_ENV_PREFIX}{name}"] = impl
+
+
+def parse_mode_names(raw: str) -> list[str]:
+    return [m.strip() for m in raw.split(",") if m.strip()]
+
+
+def parse_package_names(raw: str | None, extras: list[str] | None = None) -> list[str]:
+    """Comma-separated and/or repeated --package values."""
+    names: list[str] = []
+    if raw:
+        names.extend(parse_mode_names(raw))
+    for item in extras or []:
+        names.extend(parse_mode_names(item))
+    # Preserve order, drop duplicates.
+    seen: set[str] = set()
+    out: list[str] = []
+    for name in names:
+        if name and name not in seen:
+            seen.add(name)
+            out.append(name)
+    return out
+
+
+def package_dir_for_name(package_name: str) -> str | None:
+    """Resolve an rv-packages/ directory name to an absolute source path."""
+    pkg = os.path.join(REPO_ROOT, "src", "plugins", "rv-packages", package_name)
+    if os.path.isdir(pkg):
+        return pkg
+    return None
+
+
+# The in-RV wrapper: exec the scenario file, and ALWAYS hard-exit so a
+# windowless RV never hangs waiting for a GUI event. A scenario exception
+# exits non-zero so the runner can report failure.
+_PYEVAL = (
+    "import os, sys, traceback\n"
+    "try:\n"
+    "    exec(open(os.environ['GOLDEN_BOOTSTRAP']).read(), {'__name__': '__bootstrap__'})\n"
+    "except Exception:\n"
+    "    traceback.print_exc()\n"
+    "try:\n"
+    "    exec(open(os.environ['GOLDEN_SCENARIO']).read(), {'__name__': '__scenario__'})\n"
+    "    _rc = 0\n"
+    "except SystemExit as e:\n"
+    "    _rc = int(e.code) if isinstance(e.code, int) else 0\n"
+    "except BaseException:\n"
+    "    traceback.print_exc()\n"
+    "    _rc = 3\n"
+    "    try:\n"
+    "        with open(os.path.join(os.environ['GOLDEN_OUT'], 'traceback.txt'), 'w') as _f:\n"
+    "            traceback.print_exc(file=_f)\n"
+    "    except Exception:\n"
+    "        pass\n"
+    "sys.stdout.flush(); sys.stderr.flush()\n"
+    "os._exit(_rc)\n"
+)
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser(description=__doc__)
+    ap.add_argument("--scenario", required=True, help="Path to the in-RV scenario .py")
+    ap.add_argument("--out", required=True, help="Output dir for captured artifacts")
+    ap.add_argument("--rv", default=DEFAULT_RV, help="Path to the rv launcher")
+    ap.add_argument("--timeout", type=int, default=180, help="Seconds before giving up")
+    ap.add_argument("--screen", default="1280x1024x24", help="Xvfb screen geometry")
+    ap.add_argument(
+        "--no-xvfb",
+        action="store_true",
+        help="Skip the xvfb-run wrapper and launch --rv directly. Not for gated "
+        "captures (loses the pinned software-Mesa determinism) -- only for "
+        "smoke-testing scenario logic on a platform without Xvfb (e.g. macOS).",
+    )
+    ap.add_argument(
+        "--menu-bar",
+        action="store_true",
+        help="Do not pass -nomb (keep the menu bar). Required for scenarios that "
+        "exercise Tools/… menu items headlessly.",
+    )
+    ap.add_argument(
+        "--impl",
+        choices=("mu", "python", "default"),
+        default=None,
+        help="Implementation for --mode name(s): sets RV_MODE_IMPL_= "
+        "(omitted: forces mu unless already in the environment, for backward "
+        "compatibility with existing gates). 'default' sets nothing at all -- "
+        "RV picks its own real, shipped default exactly as a normal launch "
+        "would, with no test-harness override. Use this to test the actual "
+        "startup/mode-selection logic itself, not a specific implementation -- "
+        "see run_gui_sanity_gate.sh's final phase, added 2026-07-24 after a "
+        "real bug (session_manager's panel unreachable via its real 'x' "
+        "shortcut on a normal launch) was found that every existing gate "
+        "missed precisely because they all force an explicit impl.",
+    )
+    ap.add_argument(
+        "--mode",
+        default=",".join(SESSION_MANAGER_ALL_MODES),
+        help="Comma-separated RV mode name(s) affected by --impl "
+        f"(default: all {len(SESSION_MANAGER_ALL_MODES)} session_manager package modes)",
+    )
+    ap.add_argument(
+        "--allow-runtime-errors",
+        action="store_true",
+        help="Skip runtime-error check (Mu capture / debug only).",
+    )
+    ap.add_argument(
+        "--runtime-golden-dir",
+        default=None,
+        help="Golden dir with runtime_errors.txt; fail only on NEW errors vs Mu baseline.",
+    )
+    ap.add_argument(
+        "--package",
+        action="append",
+        default=[],
+        help="rv-packages/ directory name(s) to prepend to PYTHONPATH when the package "
+        "folder differs from --mode (repeatable; each value may be comma-separated). "
+        "Example: --mode layer_select_mode --package layer_select",
+    )
+    args = ap.parse_args()
+
+    scenario = os.path.abspath(args.scenario)
+    out = os.path.abspath(args.out)
+    if not os.path.isfile(scenario):
+        print(f"FAIL: scenario not found: {scenario}", file=sys.stderr)
+        return 2
+    if not os.path.isfile(args.rv):
+        print(f"FAIL: rv binary not found: {args.rv}", file=sys.stderr)
+        return 2
+    os.makedirs(out, exist_ok=True)
+
+    env = dict(os.environ)
+    env["LIBGL_ALWAYS_SOFTWARE"] = "1"  # force software Mesa (deterministic, no GPU)
+    env["PYTHONUNBUFFERED"] = "1"
+    # Let harness/package PYTHONPATH precede staged PlugIns/Python so Mu→Python
+    # migration edits under src/plugins/rv-packages/ load without rebuild.
+    env["RV_PYTHONPATH_APPEND_ONLY"] = "1"
+    #
+    #  Keep RV's console window out of the way, and keep its diagnostics honest.
+    #
+    #  RvConsoleWindow show()s and raise()s itself for any line at or above the
+    #  "show on" threshold, which defaults to ERROR. The harness runs -noPrefs, so
+    #  that default can never be changed by a preference, and RV emits a benign
+    #  "Duplicate mode: Source Setup" ERROR at startup — so the console popped up
+    #  over the desktop on every one of the ~150 RV launches a full loop makes.
+    #
+    #  Switching the redirect off keeps stdout and stderr on the real streams,
+    #  which this runner already captures into rv.log. That also means Python
+    #  tracebacks reach rv.log directly instead of being absorbed by the console
+    #  widget, so runtime_log_check.py sees strictly more than it used to; the
+    #  runtime_errors.txt baselines were re-captured with this set.
+    #
+    env["RV_NO_CONSOLE_REDIRECT"] = "1"
+    env["GOLDEN_OUT"] = out  # scenario writes artifacts here
+    env["GOLDEN_SCENARIO"] = scenario
+    env["GOLDEN_BOOTSTRAP"] = os.path.join(_HERE, "golden_bootstrap.py")
+    # Movieproc scenarios pin sRGB2linear=1 via source_setup (immediate mode loads
+    # inactive in -pyeval runs). Golden-mac baselines assume this color path.
+    env.setdefault("GOLDEN_SOURCE_SETUP", "1")
+    mode_names = parse_mode_names(args.mode)
+    if args.impl == "default":
+        pass  # deliberately set nothing -- see --impl's help text
+    elif args.impl is not None:
+        apply_mode_impl(env, mode_names, args.impl)
+    elif not any(k.startswith(MODE_IMPL_ENV_PREFIX) for k in env):
+        apply_mode_impl(env, mode_names, "mu")
+    # Always put the session_manager package on PYTHONPATH when any of its modes
+    # are selected (edit modes live alongside session_manager.py).
+    pkg_dirs: list[str] = []
+    sm_pkg = os.path.join(REPO_ROOT, "src", "plugins", "rv-packages", SESSION_MANAGER_PKG)
+    if os.path.isdir(sm_pkg) and any(
+        n == SESSION_MANAGER_PKG or n in SESSION_MANAGER_SIBLING_MODES for n in mode_names
+    ):
+        pkg_dirs.append(sm_pkg)
+    for name in mode_names:
+        pkg_dir = package_dir_for_mode(name)
+        if pkg_dir and pkg_dir not in pkg_dirs:
+            pkg_dirs.append(pkg_dir)
+    for pkg_name in parse_package_names(None, args.package):
+        pkg_dir = package_dir_for_name(pkg_name)
+        if pkg_dir is None:
+            print(f"FAIL: --package {pkg_name!r} not found under rv-packages/", file=sys.stderr)
+            return 2
+        if pkg_dir not in pkg_dirs:
+            pkg_dirs.append(pkg_dir)
+    package_names = parse_package_names(None, args.package)
+    # Staged Mu modules must precede the package source dirs. A Mu mode resolves
+    # its .ui/.png assets with supportPath(), which is derived from the location
+    # of the loaded module: the staged PlugIns/Mu has a sibling
+    # PlugIns/SupportFiles//, the source tree does not. session_manager's
+    # CMakeLists CONFIGURE_FILEs the generated session_manager.mu back into its
+    # source dir on every build, so a source-first path silently loads a module
+    # whose loadUIFile() calls all fail (empty panel, "tree view not found").
+    mu_module_dirs: list[str] = []
+    stage_mu = os.path.join(REPO_ROOT, "_build", "stage", "app", "PlugIns", "Mu")
+    stage_mu_mac = os.path.join(
+        REPO_ROOT, "_build", "stage", "app", "RV.app", "Contents", "PlugIns", "Mu"
+    )
+    for candidate in (stage_mu_mac, stage_mu):
+        if os.path.isdir(candidate) and candidate not in mu_module_dirs:
+            mu_module_dirs.append(candidate)
+    for pkg_dir in pkg_dirs:
+        if os.path.isdir(pkg_dir) and pkg_dir not in mu_module_dirs:
+            mu_module_dirs.append(pkg_dir)
+    if mu_module_dirs:
+        prior_mu = env.get("MU_MODULE_PATH", "")
+        env["MU_MODULE_PATH"] = os.pathsep.join(
+            mu_module_dirs + ([prior_mu] if prior_mu else [])
+        )
+    # Scenarios are exec()'d with no __file__, so they can't find sibling
+    # modules (_sm_common.py) or the shared harness (qt_scenario_utils.py) on
+    # their own -- always put both on PYTHONPATH, not just when pkg_dirs is
+    # non-empty.
+    scenario_dir = os.path.dirname(scenario)
+    prior = env.get("PYTHONPATH", "")
+    # Staged Python modes must precede the package source dirs, for the same
+    # reason as MU_MODULE_PATH above: MinorMode.supportPath() derives the asset
+    # directory from the loaded module's __file__, and only the staged
+    # PlugIns/Python has a sibling PlugIns/SupportFiles//.
+    stage_py_dirs = [
+        d
+        for d in (
+            os.path.join(
+                REPO_ROOT, "_build", "stage", "app", "RV.app", "Contents", "PlugIns", "Python"
+            ),
+            os.path.join(REPO_ROOT, "_build", "stage", "app", "PlugIns", "Python"),
+        )
+        if os.path.isdir(d)
+    ]
+    env["PYTHONPATH"] = os.pathsep.join(
+        [scenario_dir, _HERE] + stage_py_dirs + pkg_dirs + ([prior] if prior else [])
+    )
+    stage_python_modes(pkg_dirs, stage_py_dirs)
+    # Root/container safety (harmless otherwise).
+    env.setdefault("QTWEBENGINE_DISABLE_SANDBOX", "1")
+
+    if args.no_xvfb:
+        cmd = [args.rv, "-noPrefs", "-pyeval", _PYEVAL]
+    else:
+        cmd = [
+            "xvfb-run",
+            "-a",
+            "-s",
+            f"-screen 0 {args.screen}",
+            args.rv,
+            "-noPrefs",
+            "-pyeval",
+            _PYEVAL,
+        ]
+    if not args.menu_bar:
+        # Insert -nomb before -pyeval (deterministic headless default).
+        cmd.insert(cmd.index("-pyeval"), "-nomb")
+    # Optional rv-packages (e.g. layer_select) are skipped under -noPrefs unless
+    # ModeManagerPreload forces registration + load (see rvnuke's rvNuke.py).
+    # session_manager itself IS included in preload (the sibling edit modes are
+    # not -- they load lazily when a specific node type is selected, and adding
+    # all 12 to ModeManagerPreload slows startup with no benefit for most goldens).
+    SIBLING_ONLY_MODES = SESSION_MANAGER_SIBLING_MODES  # exclude siblings, keep main
+    preload_modes = [n for n in mode_names if n not in SIBLING_ONLY_MODES]
+    flag_tokens: list[str] = []
+    if preload_modes:
+        flag_tokens.append("ModeManagerPreload=" + ",".join(preload_modes))
+    if flag_tokens:
+        cmd[cmd.index("-pyeval") : cmd.index("-pyeval")] = [
+            "-flags",
+            *flag_tokens,
+        ]
+    # env.get(..., "mu") would misreport --impl default as "mu" -- it isn't
+    # set to anything; show that honestly instead of implying a value.
+    impl_note = ", ".join(
+        f"{MODE_IMPL_ENV_PREFIX}{n}={env.get(f'{MODE_IMPL_ENV_PREFIX}{n}', '(unset -- RV default)')}"
+        for n in mode_names
+    )
+    print(
+        f"[run_scenario] {os.path.basename(scenario)} -> {out} ({impl_note})",
+        file=sys.stderr,
+    )
+    rv_log_path = os.path.join(out, "rv.log")
+    try:
+        with open(rv_log_path, "w", encoding="utf-8") as rv_log:
+            proc = subprocess.run(
+                cmd,
+                env=env,
+                timeout=args.timeout,
+                stdout=rv_log,
+                stderr=subprocess.STDOUT,
+            )
+    except subprocess.TimeoutExpired:
+        print(f"FAIL: RV did not finish within {args.timeout}s", file=sys.stderr)
+        return 124
+    if proc.returncode != 0:
+        print(f"FAIL: scenario exited {proc.returncode}", file=sys.stderr)
+        return proc.returncode
+
+    if not args.allow_runtime_errors:
+        if args.runtime_golden_dir:
+            new_errors = check_runtime_delta(out, os.path.abspath(args.runtime_golden_dir))
+            if new_errors:
+                print(
+                    "FAIL: new runtime errors vs Mu golden "
+                    "(see rv.log, runtime_errors.txt)",
+                    file=sys.stderr,
+                )
+                for err in new_errors[:5]:
+                    print("---", file=sys.stderr)
+                    print(err, file=sys.stderr)
+                if len(new_errors) > 5:
+                    print(f"... and {len(new_errors) - 5} more", file=sys.stderr)
+                return 5
+        else:
+            sigs = signatures_from_out_dir(out)
+            if sigs:
+                print(
+                    "FAIL: runtime errors during scenario "
+                    "(pass --runtime-golden-dir for delta check; see rv.log)",
+                    file=sys.stderr,
+                )
+                for sig in sorted(sigs)[:5]:
+                    print("---", file=sys.stderr)
+                    print(sig, file=sys.stderr)
+                return 5
+
+    print("[run_scenario] OK", file=sys.stderr)
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/src/test/golden/harness/run_unit_tests.sh b/src/test/golden/harness/run_unit_tests.sh
new file mode 100755
index 000000000..b875ec965
--- /dev/null
+++ b/src/test/golden/harness/run_unit_tests.sh
@@ -0,0 +1,124 @@
+#!/usr/bin/env bash
+# Gate 5 — run Python unit tests for a migrated package.
+#
+# Usage (from run_migration_loop*.sh):
+#   GOLDEN_PKG_DIR="$HERE" source .../run_unit_tests.sh
+# or:
+#   GOLDEN_PKG_DIR=src/test/golden/ src/test/golden/harness/run_unit_tests.sh
+#
+# Interpreter: the tests import the ported modules for real, and those import
+# PySide6, so they have to run under an interpreter that has the same PySide6 the
+# port runs against — in practice the one RV bundles. A stock python3 normally has
+# no PySide6, and letting the run continue there would turn gate 5 into a pass made
+# entirely of skips, which is no gate at all. Override with GOLDEN_PYTHON=.
+#
+set -euo pipefail
+
+_PKG_DIR="${GOLDEN_PKG_DIR:-$(pwd)}"
+_UNIT_DIR="$_PKG_DIR/unit"
+_HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+_REPO_ROOT="$(cd "$_HERE/../../../.." && pwd)"
+
+if [ ! -d "$_UNIT_DIR" ]; then
+    echo "GATE 5 FAILED: missing unit test dir $_UNIT_DIR"
+    echo "Create unit/ with test_*.py — see VERIFICATION.md Gate 5."
+    exit 1
+fi
+
+shopt -s nullglob
+_tests=( "$_UNIT_DIR"/test_*.py )
+shopt -u nullglob
+
+if [ "${#_tests[@]}" -eq 0 ]; then
+    echo "GATE 5 FAILED: no test_*.py files in $_UNIT_DIR"
+    exit 1
+fi
+
+_has_pyside6() {
+    "$1" -c "import PySide6" >/dev/null 2>&1
+}
+
+_PY=""
+if [ -n "${GOLDEN_PYTHON:-}" ]; then
+    # The override is checked too. Pointing it at an interpreter without PySide6
+    # would make every module skip itself and the gate pass on zero tests.
+    if ! _has_pyside6 "$GOLDEN_PYTHON"; then
+        echo "GATE 5 FAILED: GOLDEN_PYTHON=$GOLDEN_PYTHON has no PySide6."
+        echo "The unit tests import the ported modules, which import PySide6."
+        exit 1
+    fi
+    _PY="$GOLDEN_PYTHON"
+else
+    for _cand in \
+        "$_REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/python3" \
+        "$_REPO_ROOT/_build/stage/app/bin/python3" \
+        "$(command -v python3 || true)"
+    do
+        [ -n "$_cand" ] && [ -x "$_cand" ] || continue
+        if _has_pyside6 "$_cand"; then
+            _PY="$_cand"
+            break
+        fi
+    done
+fi
+
+if [ -z "$_PY" ]; then
+    echo "GATE 5 FAILED: no interpreter with PySide6 found."
+    echo "The unit tests import the ported modules, which import PySide6."
+    echo "Build the staged app, or set GOLDEN_PYTHON=."
+    exit 1
+fi
+
+echo "Gate 5: running ${#_tests[@]} unit test module(s) in $_UNIT_DIR"
+echo "Gate 5: interpreter $_PY"
+
+# Headless: the tests build real widgets, so Qt needs a platform plugin that does
+# not require a display. "offscreen" rather than "minimal" — minimal has no window
+# surface, and QDialog.show() segfaults on it, which would put the Create Image and
+# New Node by Type dialogs out of reach of gate 5 for no good reason.
+export QT_QPA_PLATFORM="${QT_QPA_PLATFORM:-offscreen}"
+
+_run_and_check() {
+    # A run whose every test was skipped is not a pass either: skips are legitimate
+    # per test, but a suite that never reached the port has proved nothing. So this
+    # checks the exit status AND that a positive number of tests actually ran.
+    #
+    # The output is captured rather than streamed so it can be inspected, which
+    # needs care under `set -e`: a bare `_out="$(...)"` of a failing command aborts
+    # the script immediately and the diagnostics never get printed. `|| _rc=$?`
+    # keeps the failure in-band and preserves the real status — note `if ! cmd`
+    # would not, because the negation makes $? read 0 inside the branch.
+    local _out _rc=0
+
+    _out="$("$@" 2>&1)" || _rc=$?
+
+    echo "$_out"
+
+    if [ "$_rc" -ne 0 ]; then
+        echo "GATE 5 FAILED: the test run exited $_rc (see above)."
+        return "$_rc"
+    fi
+
+    # pytest: "N passed", possibly with skips; unittest: "Ran N tests".
+    local _ran
+    _ran="$(printf '%s\n' "$_out" \
+        | grep -oE '[0-9]+ passed|^Ran [0-9]+ test' \
+        | grep -oE '[0-9]+' \
+        | tail -1)"
+
+    if [ -z "$_ran" ] || [ "$_ran" -eq 0 ]; then
+        echo "GATE 5 FAILED: no tests actually ran (all skipped, or none collected)."
+        echo "A suite that skips itself reports success as loudly as one that works."
+        return 1
+    fi
+
+    echo "Gate 5: $_ran test(s) executed."
+    return 0
+}
+
+if "$_PY" -m pytest --version >/dev/null 2>&1; then
+    _run_and_check "$_PY" -m pytest "$_UNIT_DIR" -q "$@"
+else
+    echo "(pytest not found — falling back to unittest discover)"
+    _run_and_check "$_PY" -m unittest discover -s "$_UNIT_DIR" -p "test_*.py" -v
+fi
diff --git a/src/test/golden/harness/runtime_log_check.py b/src/test/golden/harness/runtime_log_check.py
new file mode 100644
index 000000000..d7d677246
--- /dev/null
+++ b/src/test/golden/harness/runtime_log_check.py
@@ -0,0 +1,256 @@
+#!/usr/bin/env python3
+"""Runtime error detection for golden-test scenarios.
+
+At Mu capture time, normalized error *signatures* are committed as
+``runtime_errors.txt`` beside ``session.rv``. Gate 0 passes when the Python port
+introduces no signatures beyond that Mu baseline (same pre-existing RV noise is
+fine; new regressions are not).
+
+Also used on every ``run_scenario.py`` invocation when ``--runtime-golden-dir`` is set.
+"""
+
+from __future__ import annotations
+
+import argparse
+import os
+import re
+import sys
+
+_HERE = os.path.dirname(os.path.abspath(__file__))
+
+GOLDEN_RUNTIME_FILE = "runtime_errors.txt"
+
+_ERROR_LINE_PATTERNS: tuple[re.Pattern[str], ...] = (
+    re.compile(r"Traceback \(most recent call last\)", re.I),
+    re.compile(r"Exception thrown while calling", re.I),
+    re.compile(r"runtime\.eval,\s*line\s+\d+", re.I),
+    re.compile(r"Unresolved reference to", re.I),
+    re.compile(r"Unable to reference", re.I),
+    re.compile(r"Cannot use default constructor", re.I),
+    re.compile(r"^Exception\s*:", re.I),
+    re.compile(r"^TypeError\s*:", re.I),
+    re.compile(r"^SyntaxError\s*:", re.I),
+    re.compile(r"^ValueError\s*:", re.I),
+    re.compile(r"^AttributeError\s*:", re.I),
+    re.compile(r"^RuntimeError\s*:", re.I),
+    re.compile(r"^Mu\s+exception\s*:", re.I),
+)
+
+_EXCEPTION_LINE = re.compile(
+    r"^(\w+(?:Error|Exception)|Exception|SyntaxError|TypeError|ValueError|"
+    r"AttributeError|RuntimeError|Mu exception)\b",
+    re.I,
+)
+
+
+def _is_error_line(line: str) -> bool:
+    return any(p.search(line) for p in _ERROR_LINE_PATTERNS)
+
+
+def _extract_blocks(text: str) -> list[str]:
+    blocks: list[str] = []
+    current: list[str] = []
+    in_traceback = False
+
+    for line in text.splitlines():
+        if re.search(r"Traceback \(most recent call last\)", line, re.I):
+            if current:
+                blocks.append("\n".join(current))
+            current = [line]
+            in_traceback = True
+            continue
+        if in_traceback:
+            current.append(line)
+            if line.strip() == "" and len(current) > 3:
+                blocks.append("\n".join(current))
+                current = []
+                in_traceback = False
+            continue
+        if _is_error_line(line):
+            blocks.append(line)
+    if current:
+        blocks.append("\n".join(current))
+    return blocks
+
+
+def _normalize_line(line: str) -> str:
+    line = re.sub(r"\bline \d+", "line N", line)
+    line = re.sub(r":\d+:", ":N:", line)
+    line = re.sub(r"0x[0-9a-fA-F]+", "0xADDR", line)
+    return line.strip()
+
+
+def signature_from_block(block: str) -> str:
+    """Stable signature for one traceback or standalone error line."""
+    lines = [ln.strip() for ln in block.splitlines() if ln.strip()]
+    if not lines:
+        return ""
+
+    exc = ""
+    for ln in reversed(lines):
+        if _EXCEPTION_LINE.match(ln):
+            exc = _normalize_line(ln)
+            break
+    if not exc:
+        exc = _normalize_line(lines[-1])
+
+    frames: list[str] = []
+    for ln in lines:
+        if 'File "' in ln or "runtime.eval" in ln.lower():
+            frames.append(_normalize_line(ln))
+
+    if frames:
+        return f"{exc} @ {' | '.join(frames[-2:])}"
+    return exc
+
+
+def collect_signatures(
+    rv_log_text: str,
+    *,
+    traceback_text: str | None = None,
+) -> set[str]:
+    sigs: set[str] = set()
+    if traceback_text and traceback_text.strip():
+        sig = signature_from_block(traceback_text.strip())
+        if sig:
+            sigs.add(sig)
+    for block in _extract_blocks(rv_log_text):
+        sig = signature_from_block(block)
+        if sig:
+            sigs.add(sig)
+    return sigs
+
+
+def _read_out_logs(out_dir: str) -> tuple[str, str | None]:
+    rv_log = os.path.join(out_dir, "rv.log")
+    tb_path = os.path.join(out_dir, "traceback.txt")
+    rv_text = ""
+    if os.path.isfile(rv_log):
+        with open(rv_log, encoding="utf-8", errors="replace") as f:
+            rv_text = f.read()
+    tb_text = None
+    if os.path.isfile(tb_path):
+        with open(tb_path, encoding="utf-8", errors="replace") as f:
+            tb_text = f.read()
+    return rv_text, tb_text
+
+
+def signatures_from_out_dir(out_dir: str) -> set[str]:
+    rv_text, tb_text = _read_out_logs(out_dir)
+    return collect_signatures(rv_text, traceback_text=tb_text)
+
+
+def load_golden_runtime_signatures(golden_dir: str) -> set[str]:
+    path = os.path.join(golden_dir, GOLDEN_RUNTIME_FILE)
+    if not os.path.isfile(path):
+        return set()
+    sigs: set[str] = set()
+    with open(path, encoding="utf-8") as f:
+        for line in f:
+            line = line.strip()
+            if line and not line.startswith("#"):
+                sigs.add(line)
+    return sigs
+
+
+def find_new_runtime_errors(out_dir: str, golden_dir: str) -> list[str]:
+    """Return sorted signatures in *out_dir* that are not in the Mu golden baseline."""
+    actual = signatures_from_out_dir(out_dir)
+    baseline = load_golden_runtime_signatures(golden_dir)
+    return sorted(actual - baseline)
+
+
+def write_runtime_baseline(out_dir: str, dest_path: str) -> set[str]:
+    sigs = signatures_from_out_dir(out_dir)
+    os.makedirs(os.path.dirname(dest_path) or ".", exist_ok=True)
+    with open(dest_path, "w", encoding="utf-8") as f:
+        f.write(
+            "# Normalized runtime error signatures from Mu capture.\n"
+            "# Python port must not introduce errors beyond this set.\n"
+        )
+        for sig in sorted(sigs):
+            f.write(sig + "\n")
+    return sigs
+
+
+def write_runtime_report(
+    out_dir: str,
+    *,
+    new_errors: list[str],
+    actual: set[str],
+    baseline: set[str],
+) -> None:
+    path = os.path.join(out_dir, "runtime_errors.txt")
+    with open(path, "w", encoding="utf-8") as f:
+        if new_errors:
+            f.write("NEW runtime errors (not in Mu golden):\n")
+            for err in new_errors:
+                f.write(err + "\n")
+            f.write("\n")
+        f.write(f"Actual signatures ({len(actual)}):\n")
+        for sig in sorted(actual):
+            f.write(sig + "\n")
+        f.write(f"\nGolden baseline ({len(baseline)}):\n")
+        for sig in sorted(baseline):
+            f.write(sig + "\n")
+
+
+def check_runtime_delta(out_dir: str, golden_dir: str) -> list[str]:
+    """Compare *out_dir* against golden baseline; return new error signatures."""
+    actual = signatures_from_out_dir(out_dir)
+    baseline = load_golden_runtime_signatures(golden_dir)
+    new_errors = sorted(actual - baseline)
+    write_runtime_report(
+        out_dir,
+        new_errors=new_errors,
+        actual=actual,
+        baseline=baseline,
+    )
+    return new_errors
+
+
+def main() -> int:
+    ap = argparse.ArgumentParser(description=__doc__)
+    ap.add_argument("out_dir", help="Scenario output dir (contains rv.log)")
+    ap.add_argument(
+        "--golden-dir",
+        help="Golden baseline dir containing runtime_errors.txt (delta check)",
+    )
+    ap.add_argument(
+        "--write-baseline",
+        metavar="PATH",
+        help="Write Mu runtime_errors.txt from OUT_DIR to PATH and exit",
+    )
+    args = ap.parse_args()
+
+    out_dir = os.path.abspath(args.out_dir)
+
+    if args.write_baseline:
+        sigs = write_runtime_baseline(out_dir, os.path.abspath(args.write_baseline))
+        print(f"runtime baseline: {len(sigs)} signature(s) -> {args.write_baseline}")
+        return 0
+
+    if args.golden_dir:
+        new_errors = check_runtime_delta(out_dir, os.path.abspath(args.golden_dir))
+        if not new_errors:
+            print("runtime: PASS (no new errors vs Mu golden)")
+            return 0
+        print("runtime: FAIL (new errors vs Mu golden)")
+        for err in new_errors:
+            print("---")
+            print(err)
+        return 1
+
+    sigs = signatures_from_out_dir(out_dir)
+    if not sigs:
+        print("runtime: CLEAN")
+        return 0
+    print("runtime: FAIL (errors present; pass --golden-dir for delta check)")
+    for sig in sorted(sigs):
+        print("---")
+        print(sig)
+    return 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/src/test/golden/session_manager/COVERAGE.md b/src/test/golden/session_manager/COVERAGE.md
new file mode 100644
index 000000000..71baad2bb
--- /dev/null
+++ b/src/test/golden/session_manager/COVERAGE.md
@@ -0,0 +1,994 @@
+# `session_manager` — Migration Coverage Contract
+
+**Purpose.** Exhaustive list of `session_manager` behaviors that must keep working when
+the package is ported from Mu to Python. Each item maps to verification gate(s) and scenario
+id. The port is done when every item here passes per [`../VERIFICATION.md`](../VERIFICATION.md).
+
+**Source of truth.** Mu implementation:
+`src/plugins/rv-packages/session_manager/session_manager.mu.in` (~3532 lines),
+`StackGroup_edit_mode.mu`, `SequenceGroup_edit_mode.mu`, `SwitchGroup_edit_mode.mu`,
+`FolderGroup_edit_mode.mu`, `SourceGroup_edit_mode.mu`, `LayoutGroup_edit_mode.mu`,
+`RetimeGroup_edit_mode.mu`, `Stack_edit_mode.mu`, `Switch_edit_mode.mu`,
+`Composite_edit_mode.mu`, `transform_manip.mu`, `local_thumbnail_gen.py` (already Python).
+
+**Iteration status (2026-08-04).** `run_migration_loop_mac.sh` exits 0: gates 0-5 pass
+plus the post-gate 83-clip full-folder thumbnail check. Python is now RV's default
+implementation for all twelve modes of this package (see
+[`../VERIFICATION.md` § Mu/Python implementation toggle](../VERIFICATION.md#mupython-implementation-toggle)),
+so gate 3 exercises the port rather than re-testing Mu, and gate 4 still reaches Mu via
+`RV_MODE_IMPL_=mu`.
+
+**State**, per [Definition of done](../VERIFICATION.md#definition-of-done):
+
+| # | Item | State |
+|---|---|---|
+| 1, 6 | Every inventory item pinned | **no ⬜ rows** — 64 ✅ (committed golden) / 25 🟡 (unit test only, the row is not reproducible headlessly) / 1 ❌ (pre-existing defect, C7). See [Behavior inventory](#behavior-inventory) |
+| 3 | Gate 5 coverage bar (no untested Mu-method rows) | **met** — 329 of 335 Mu symbols unit-tested, the other 6 marked ➖ with the reason and what covers them instead (1078 tests) |
+| 4 | GUI sanity pixel review | **done** — 37/37 behavioral PASS on a real display, and all 60 PNG pairs byte-identical to `golden-mac/`, so there is no rendering difference to attribute to noise or to a regression |
+| 8 | Independent code-review agent | **run** — two fresh agents (port fidelity vs Mu; infrastructure + tests). All blocking findings fixed and verified; see below |
+
+Gate 5's suite passes and is not vacuous: the tests import the port, and hiding
+`session_manager.py` makes the gate fail.
+
+**Fixture path.** Real mp4 media for thumbnail/filmstrip and progressive-load tests:
+`/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/`.
+Override via `SM_MERIDIAN_DIR` env var. Run scripts default to this path.
+
+---
+
+## Primary outcomes
+
+Approved 2026-07-30.
+
+| # | User-visible outcome | Graph / property signal | Pixel discriminant | Scenario(s) | B | P |
+|---|----------------------|-------------------------|--------------------|-------------|---|---|
+| 1 | Session tree categorises nodes: SOURCES / SEQUENCES / STACKS / FOLDERS / LAYOUTS / OTHER | `viewNodes()` each in correct category; `nodeType()` → category routing deterministic | Tree panel PNG: category headers visible with child rows | `sm_tree_categories` | ✅ | ✅ |
+| 2 | Clicking a tree node sets that node as the active view | `viewNode() == clicked_node` | Checkmark `✓` in status col moves; view label text updates | `sm_select_node` | ✅ | ✅ |
+| 3 | Delete removes the selected node from the session | `not nodeExists(node)` after delete | Row disappears from tree | `sm_delete_source` | ✅ | ✅ |
+| 4 | Add Black / Color / Bars / Color Chart creates a movieproc source in SOURCES | New `RVSourceGroup`; `media.movie` contains movieproc URL of correct type; correct name | SOURCES shows new row | `sm_add_movieproc_black`, `sm_add_movieproc_solid`, `sm_add_movieproc_bars`, `sm_add_movieproc_colorchart` | ✅ | ✅ |
+| 5 | Add Sequence / Stack wraps selected sources as inputs | New `RVSequenceGroup` / `RVStackGroup`; `nodeConnections()` shows sources as inputs | New SEQUENCES / STACKS row; inputs panel lists wrapped sources | `sm_add_sequence`, `sm_add_stack` | ✅ | ✅ |
+| 6 | Inline rename updates the node's display name | `getStringProperty(node+".ui.name")[0] == new_name` | Tree row text shows new name | `sm_rename_inline` | ✅ | ✅ |
+| 7 | Input reorder (up/down) and sort (A-Z / Z-A) change node connections | `nodeConnections(viewNode())._0` in expected order | Inputs panel rows in new order | `sm_inputs_reorder`, `sm_inputs_sort` | ✅ | ✅ |
+| 8 | Real mp4 source thumbnail appears in source row after load | `session-manager-preview-available` fires; thumbnail on disk in cache | Source row widget shows thumbnail PNG (before=fallback, after=thumbnail differ) | `sm_meridian_mp4_load` | ✅ | ✅ |
+
+---
+
+## File inventory (approved 2026-07-30)
+
+| Path | Role | Migration action |
+|---|---|---|
+| `session_manager.mu.in` | Main `SessionManagerMode` Mu source (~3532 lines) | Port to `session_manager.py`; keep until done |
+| `StackGroup_edit_mode.mu` | Stack editor tab | Port to `StackGroup_edit_mode.py` |
+| `SequenceGroup_edit_mode.mu` | Sequence editor tab | Port |
+| `SwitchGroup_edit_mode.mu` | Switch editor tab | Port |
+| `FolderGroup_edit_mode.mu` | Folder editor tab | Port |
+| `SourceGroup_edit_mode.mu` | Source editor tab | Port |
+| `LayoutGroup_edit_mode.mu` | Layout editor tab | Port |
+| `RetimeGroup_edit_mode.mu` | Retime editor tab | Port |
+| `Stack_edit_mode.mu` | Stack (non-group) editor | Port |
+| `Switch_edit_mode.mu` | Switch editor | Port |
+| `Composite_edit_mode.mu` | Composite editor | Port |
+| `transform_manip.mu` | Transform manipulator | Port |
+| `local_thumbnail_gen.py` | Already Python — thumbnail/filmstrip generator | Keep unchanged |
+| `*.ui` | Qt Designer UI files (7 dialogs + main) | Keep unchanged |
+| `*.png` | All icon images | Keep unchanged |
+| `PACKAGE` | Mode registration | Add `.py` entries alongside `.mu.in` |
+| `CMakeLists.txt` | Build target | Unchanged |
+
+**External callers.** Two Mu packages used this one through `require session_manager`,
+which cannot resolve a Python module. Both now reach it without the require
+(Definition of done #7 — the cross-package API stays callable before the Mu source is
+removed):
+
+| Caller | Used | Now reaches it by |
+|---|---|---|
+| `rvnuke/rvnuke_mode.mu.in` | `theMode()`, `theMode().selectedNodes()`, `setToolTipProp()` | `sessionManagerLoaded()` / `sessionManagerSelectedNodes()` helpers; the tooltip is a single property write, inlined as `setSessionManagerToolTip()` |
+| `maya_tools/maya_tools.mu.in` | `theMode()`, `theMode().selectedNodes()` | the same two helpers |
+
+The helpers rest on two primitives, both verified against the **Python** mode in a
+live RV (`--impl default`, so the Python port was the one loaded):
+
+- `rvui.minorModeFromName("session_manager") neq nil` → `true`. A Python mode is
+  registered as a `PyMinorMode` carrying the same `_modeName`, so the loaded check
+  works regardless of implementation.
+- `commands.sendInternalEvent("session-manager-selected-nodes", "")` → the selected
+  node name. Both implementations answer this event (`selectedNodesEvent`), so gate 4
+  keeps passing and a Mu-mode session behaves identically.
+
+All three Mu modules were forced to compile (`runtime.eval("1", [module])`) to prove
+the patches parse; the wrapper functions themselves are not called directly by a test,
+because `runtime.eval` cannot invoke a function in another package's module scope —
+`rvnuke_mode.deb()`, which predates this change, fails the same way.
+
+- `state.sessionManager` is assigned in `SessionManagerMode.__init__` and may be read by other packages.
+- Any package calling `modeManager.activateMode("session_manager")` must continue to work.
+
+**Files to create:**
+
+| Path | Role |
+|---|---|
+| `session_manager.py` | Python port + `createMode()` |
+| `StackGroup_edit_mode.py` | Python port |
+| `SequenceGroup_edit_mode.py` | Python port |
+| `SwitchGroup_edit_mode.py` | Python port |
+| `FolderGroup_edit_mode.py` | Python port |
+| `SourceGroup_edit_mode.py` | Python port |
+| `LayoutGroup_edit_mode.py` | Python port |
+| `RetimeGroup_edit_mode.py` | Python port |
+| `Stack_edit_mode.py` | Python port |
+| `Switch_edit_mode.py` | Python port |
+| `Composite_edit_mode.py` | Python port |
+| `transform_manip.py` | Python port |
+| `src/test/golden/session_manager/scenarios/*.py` | 24 golden scenarios |
+| `src/test/golden/session_manager/unit/test_*.py` | Gate 5 unit tests |
+| Run scripts (see Harness section below) | Migration loop + capture |
+
+---
+
+## Verification method
+
+Gates (**B** / **P**), migration loop, capture, definition of done:
+[`../VERIFICATION.md`](../VERIFICATION.md).
+
+Coverage legend: **✅** = pinned by a committed Mu golden; **🟡** = pinned by a unit test only, because the row needs a pointer, a modal dialog or a focused window the headless harness cannot produce; **❌** = pre-existing defect, not a port regression.
+
+**Harness note.** The `run_scenario.py` default `--mode` already covers all
+`session_manager` sibling modes (`SESSION_MANAGER_ALL_MODES`). No per-scenario
+`--mode` override needed unless testing a specific sub-mode in isolation.
+
+**Pixel strategy.** Session manager is a QDockWidget — grab the dock's widget (`_baseWidget`)
+for the tree/button bar PNG (`panel.png`). Grab the nav panel separately for `nav.png`.
+Use fixed `QSize(400, 600)` on the base widget before grabbing to avoid monitor-DPI drift.
+
+---
+
+## Migration loop (this package)
+
+```bash
+cd src/test/golden/session_manager
+./run_migration_loop_mac.sh
+```
+
+**Gate failure hints:**
+
+| Output | Fix focus |
+|---|---|
+| `GATE 0 FAILED` | New runtime errors vs Mu baseline in `runtime_errors.txt` |
+| `GATE 1 FAILED` | Graph/property mismatch — check `session.rv` diff from `compare.py` |
+| `GATE 2 FAILED` | Pixel regression — open PNGs with `rmsImageDiff`; check widget grab size |
+| `SANITY FAILED` | Real-display behavioral drift |
+| `GATE 3 FAILED` | PACKAGE wiring or mode-registration issue |
+| `GATE 4 FAILED` | Harness/golden corruption — re-capture Mu |
+| `GATE 5 FAILED` | Missing/failing unit tests — check `unit/test_*.py` + `COVERAGE.md` Mu-methods table |
+
+**Running gate 5 alone:**
+
+```bash
+GOLDEN_PKG_DIR=src/test/golden/session_manager src/test/golden/harness/run_unit_tests.sh
+```
+
+It picks RV's bundled interpreter automatically (the tests import the port, which
+imports PySide6); `GOLDEN_PYTHON=` overrides. If it reports "no interpreter with
+PySide6 found", the staged app has not been built.
+
+**Known limitations:**
+- The mp4 scenarios are no longer skipped by `run_gui_sanity_gate.sh`: the helpers poll
+  `loadTotal()` while pumping instead of calling `waitForProgressiveLoading()`, which is
+  what used to deadlock a real display. Only `sm_folder_thumbnails_all` stays out, on
+  cost grounds — `run_folder_thumbnails_all.sh` runs it after the gates.
+- Media fixture path defaults to
+  `/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/`.
+  Override: `SM_MERIDIAN_DIR= ./run_migration_loop_mac.sh`.
+
+---
+
+## Behavior inventory
+
+**Status.** Gates 0-2 pass for all 38 gated scenarios against the Python port, and
+gate 4 confirms Mu still matches the same committed goldens, so every row marked ✅
+below is pinned in both implementations.
+
+🟡 means a unit test pins the behaviour but no golden scenario can: the row needs
+something the headless harness cannot produce. That is H1-H6 (a pointer drag), L1-L2
+and D4 (a context menu — `QMenu.exec` blocks), C8 and C15 (a modal dialog), B2, G10
+and F1-F2 (a focused double-click or key press), A8 and H4 (drop-target state visible
+only mid-drag), I3-I4 (preview path events), and J1-J3, K1-K3 and N1 (tab state,
+config and splitter, all written on paths a scenario cannot reach without one of the
+above). Each names its test in the row. ✅ is reserved for behaviours a committed
+golden pins, per the legend.
+
+
+### A — Tree view & node categorization
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| A1 | SOURCES / SEQUENCES / STACKS / LAYOUTS / FOLDERS / OTHER headers appear when nodes of those types exist | B+P | ✅ |
+| A2 | Category headers collapse/expand; state persisted in `#Session.sm_view.` | B+P | ✅ |
+| A3 | Source nodes show sub-tree: media file (bold), views, layers, channels | B+P | ✅ |
+| A4 | Sub-component expansion state persisted in `sm_state.expandedSubState` | B | ✅ |
+| A5 | Node expansion state persisted in `sm_state.expandState` | B | ✅ |
+| A6 | Sort order within folder persisted in `sm_state.sortKey` / `sm_state.sortKeyParent` | B | ✅ |
+| A7 | Currently active view node shows `✓` in status column | B+P | ✅ |
+| A8 | Folder nodes are drop-targets; non-folder category items are not | P | 🟡 |
+| A9 | Node type → correct icon (RVSourceGroup=videofile, RVStackGroup=photoalbum, etc.) | P | ✅ |
+| A10 | Tree column widths auto-resize to content | P | ✅ |
+
+### B — Node selection & view navigation
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| B1 | Single-click top-level item → `setViewNode()`; inputs panel updates | B+P | ✅ |
+| B2 | Double-click top-level item → `viewByIndex()` | B | 🟡 |
+| B3 | Click radio-button column on sub-component → `setImageRequest()` | B | ✅ |
+| B4 | `request.imageComponent` change → radio icons update (blue-on vs dark) | B+P | ✅ |
+| B5 | Prev-view / next-view buttons navigate `previousViewNode()` / `nextViewNode()` | B+P | ✅ |
+| B6 | Home (select current) button scrolls tree to current view node and highlights it | B+P | ✅ |
+| B7 | View label shows `uiName(viewNode())` | P | ✅ |
+| B8 | `after-graph-view-change` event → `selectViewableNode()` + `updateNavUI()` + `restoreTabState()` | B | ✅ |
+| B9 | Prev/next buttons disabled when no previous/next node exists | P | ✅ |
+
+### C — Adding nodes (Add button menu)
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| C1 | Add > Sequence → new `RVSequenceGroup` with selected sources; `renameByType` names it | B+P | ✅ |
+| C2 | Add > Stack → new `RVStackGroup` | B+P | ✅ |
+| C3 | Add > Switch → new `RVSwitchGroup` | B | ✅ |
+| C4 | Add > Layout → new `RVLayoutGroup` | B | ✅ |
+| C5 | Add > Retime → new `RVRetimeGroup` | B | ✅ |
+| C6 | Add > Color → new `RVColor` node | B | ✅ |
+| C7 | Add > OCIO → new `RVOCIO` node | B | ❌ |
+| C8 | Add > New Node by Type… → dialog shows all node types; creates chosen type | B | 🟡 |
+| C9 | Add > Black… → `black,*.movieproc` source added; named "Black" | B+P | ✅ |
+| C10 | Add > Color… → `solid,*.movieproc` with chosen RGB | B+P | ✅ |
+| C11 | Add > Color Bars… → `smptebars,*.movieproc`; color controls hidden | B+P | ✅ |
+| C12 | Add > SRGB Color Chart… → `srgbcolorchart,*.movieproc` | B | ✅ |
+| C13 | Add > ACES Color Chart… → `acescolorchart,*.movieproc` | B | ✅ |
+| C14 | Add > Blank… → `blank,*.movieproc`; width/height hidden | B | ✅ |
+| C15 | Create Image dialog FPS defaults from `General/fps` setting | B | 🟡 |
+| C16 | Color picker in dialog updates button background and `_cidColor` | P | ✅ |
+
+### D — Folder operations
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| D1 | Folder > Empty Folder → new `RVFolderGroup` with no inputs; named "Empty Folder" | B+P | ✅ |
+| D2 | Folder > From Selection → folder wraps selected nodes; removes from current parent | B+P | ✅ |
+| D3 | Folder > From Copy of Selection → folder wraps copies; original parent connections unchanged | B | ✅ |
+| D4 | Context menu → Folder submenu mirrors folder button menu | P | 🟡 |
+
+### E — Delete operations
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| E1 | Delete button on selected source → `deleteNode()` | B+P | ✅ |
+| E2 | Delete on a node in **more than one folder** → `removeInput()`; one folder plus another parent type still deletes outright | B | ✅ |
+| E3 | Delete folder → `deleteNode(folder)` | B+P | ✅ |
+| E4 | Inputs panel delete button → removes selected inputs from `viewNode()` connections | B | ✅ |
+| E5 | Delete with multiple selection deletes all selected | B | ✅ |
+
+### F — Rename / inline edit
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| F1 | F2 / Edit key → inline edit activated | B+P | 🟡 |
+| F2 | Edit Info button → `_viewTreeView.edit(index)` | B+P | 🟡 |
+| F3 | Rename on tree item → `setUIName(node, new_text)` | B+P | ✅ |
+| F4 | `ui.name` change event → `_lazyUpdateTimer` fires → tree label refreshed | B | ✅ |
+
+### G — Inputs panel
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| G1 | Inputs panel shows `nodeConnections(viewNode())._0` | B+P | ✅ |
+| G2 | Source inputs show preview widget (thumbnail + name + meta) when previews enabled | P | ✅ |
+| G3 | Non-source inputs show icon + `uiName` | B+P | ✅ |
+| G4 | Order Up moves selected input(s) one position toward top | B+P | ✅ |
+| G5 | Order Down moves selected input(s) one position toward bottom | B+P | ✅ |
+| G6 | Sort A-Z sorts all inputs alphabetically ascending; sets node connections | B+P | ✅ |
+| G7 | Sort Z-A sorts descending | B+P | ✅ |
+| G8 | Folder node sort also updates `sm_state.sortKey` on each child | B | ✅ |
+| G9 | Inputs panel disabled for `RVSourceGroup` and `RVFileSource` nodes | P | ✅ |
+| G10 | Double-click input → `viewByIndex()` sets that node as view | B | 🟡 |
+
+### H — Drag and drop
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| H1 | Drag source from tree → drop onto folder → `CopyAction` adds as input | B | 🟡 |
+| H2 | Drag source in tree → reorder → `MoveAction` updates parent connections | B | 🟡 |
+| H3 | Drag from tree to inputs view → forces `CopyAction` | B | 🟡 |
+| H4 | Dragging non-folder nodes disables the FOLDERS section as drop target | P | 🟡 |
+| H5 | `NodeModel.mimeData()` encodes `rvnode://` URLs for dragged items | B | 🟡 |
+| H6 | Drop within tree triggers `_sortTimer` to re-assign sort order | B | 🟡 |
+
+### I — Source previews (thumbnail / filmstrip)
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| I1 | With `RV_SESSION_MANAGER_USE_THUMBNAILS=0`, previews disabled | P | ✅ |
+| I2 | With previews enabled, source rows show `SourcePreviewWidget` | P | ✅ |
+| I3 | Thumbnail path event returns cached path | B | 🟡 |
+| I4 | Filmstrip path event returns cached path | B | 🟡 |
+| I5 | `session-manager-preview-available` → row widget updated | P | ✅ |
+| I6 | Config > Show Source Previews toggle persisted in settings | B+P | ✅ |
+| I7 | Real mp4 → thumbnail visible in source row | P | ✅ |
+| I8 | Real mp4 → filmstrip generated; meta label shows "mp4" | B+P | ✅ |
+| I9 | Fallback pixmap shown when no thumbnail yet generated | P | ✅ |
+
+### J — Editor tab (per-node type)
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| J1 | Tab index saved to `sm_state.tab` on view change | B | 🟡 |
+| J2 | Tab state restored on `after-graph-view-change` | B | 🟡 |
+| J3 | Selecting `RVSourceGroup` auto-switches to tab index 1 | B | 🟡 |
+| J4 | `view-edit-mode-activated` → per-type edit widget loads | B | ✅ |
+
+### K — Config / startup
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| K1 | Config > Always Show → `showOnStartup=yes` | B | 🟡 |
+| K2 | Config > Never Show → `showOnStartup=no` | B | 🟡 |
+| K3 | Config > Restore Last → `showOnStartup=last` | B | 🟡 |
+
+### L — Context menu
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| L1 | Right-click tree → context menu with Delete / Edit Info / Select Current | P | 🟡 |
+| L2 | Context menu → Folder and Create submenus visible | P | 🟡 |
+
+### M — Events
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| M1 | `new-node` → `updateTree()` | B | ✅ |
+| M2 | `after-node-delete` → `updateTree()` | B | ✅ |
+| M3 | `after-clear-session` → `updateTree()` | B | ✅ |
+| M4 | `graph-node-inputs-changed` → `updateInputs(viewNode())` | B | ✅ |
+| M5 | `graph-state-change` on `ui.name` → `_lazyUpdateTimer` | B | ✅ |
+| M6 | `graph-state-change` on `request.imageComponent` → sub-component icons update | B+P | ✅ |
+| M7 | `before/after-progressive-loading` → suppress tree updates during bulk load | B | ✅ |
+
+### N — Splitter
+
+| ID | Behavior | Gate | Status |
+|---|---|---|---|
+| N1 | Splitter move → `#Session.sm_window.splitter` float fraction written | B | 🟡 |
+
+---
+
+## Dropped behaviors (non-deterministic — covered by unit tests instead)
+
+- **FilmstripWidget hover/scrub** (`showFrameAtX`, `mouseMoveEvent`, `HoverEnter/Leave`) — pointer-position dependent; covered in `unit/test_preview_widgets.py`
+- **ThumbnailWidget.load / setFallback** — pure image load; covered in `unit/test_preview_widgets.py`
+- **`sm_reopen_after_hide`** — dock close/reopen interaction with window minimize; timing-dependent modal state
+- **`sm_toggle_diag`** — debug toggle diagnostic; no deterministic golden possible
+- **`sm_thumb_diag` / `sm_thumb_diag2`** — thumbnail diagnostic/debug; covered by unit tests for `local_thumbnail_gen.py`
+
+---
+
+### Headless limitations (cannot be pinned by a golden on this harness)
+
+`run_scenario.py` drives RV through `-pyeval`, before the Qt event loop, with no real
+window focus. Some triggers do not propagate there, which is already noted inside
+`sm_select_node` for the single-click case:
+
+| Row | Why | Covered by |
+|---|---|---|
+| B2, G10, F1, F2 | A synthesised double-click on a tree row / inputs row does not reach `viewByIndex()` headlessly. Re-verified by writing the scenario and running it: `viewNode()` stays on the previous node under **Mu** as well as under Python, so it is a harness limitation, not a port defect, and the scenario was dropped rather than committed with a baseline that pins nothing | `unit/test_mode_interactions.py::TestViewByIndex`, `::TestEditViewInfoSlot`, `unit/test_mode_slots.py::TestItemPressed` → 🟡 |
+| C15 | The Create Image dialog is modal; VERIFICATION.md drops modal UI from the golden inventory | `unit/test_mode_interactions.py::TestCreateImageDialogDefaults` → 🟡 |
+| A8 | A real drag needs a pointer grab and a live event loop, which `-pyeval` has not got. The policy is pinned where it is decided instead: `dragEnterEvent` clearing the FOLDERS row's `ItemIsDropEnabled` for a non-folder drag, and `dragMoveEvent`'s rejection rules | `unit/test_mode_interactions.py::TestFolderDropTargets` + `unit/test_tree_view.py` → 🟡 |
+| C8 | The New Node by Type dialog is modal. The type list it is filled from and the creation path it feeds are pinned instead | `unit/test_mode_interactions.py::TestNewNodeByTypeDialog` → 🟡 |
+| L1, L2, D4 | The context menu is shown with `QMenu.exec()`, which blocks until dismissed and never returns headlessly. Its *construction* is checked instead — including that the Folder submenu is literally the same QMenu object as the folder button's, so the two cannot drift | `unit/test_mode_interactions.py::TestContextMenuConstruction` → 🟡 |
+| M3 | Grabbing the dock's widget *after* `clearSession()` segfaults RV — reproduced on Mu, so pre-existing. `sm_tree_event_clear` grabs the panel before the clear and asserts the post-clear state on the model and the saved graph | `sm_tree_event_clear` (✅, panel PNG pre-clear) |
+| I7, I8 (at 83 clips) | The full-folder variant `sm_folder_thumbnails_all` is gated behaviorally, not on pixels. At 83 rows Qt re-rasterises the row labels with different subpixel weights between two runs of the *same* implementation — same glyphs, same layout, glyph-edge deltas up to 167/255 — so no meaningful dmax absorbs it. What the scenario is for is asserted on the graph and the thumbnail cache instead: 83 thumbnails and 83 filmstrips written, 83 rows off the fallback icon, 83 *distinct* row images. The pixel-exact check on the same panel is `sm_folder_thumbnails` at 12 clips, which does capture deterministically | `sm_folder_thumbnails` (✅, dmax 0) + `sm_folder_thumbnails_all` assertions |
+
+### Known pre-existing defects (not port regressions)
+
+| Row | Defect |
+|---|---|
+| C7 | **Add ▸ OCIO cannot work.** Both `session_manager.mu.in` and `session_manager.py` pass `"RVOCIO"` to `newNode`, and this build has no such node type — it ships `OCIO`, `OCIODisplay`, `OCIOFile`, `OCIOLook`. The action raises in either implementation. It is also unpinnable by a golden: the traceback names `session_manager.py` frames under Python and Mu frames under Mu, so gate 0 reports a new signature whichever implementation captured the baseline. `sm_add_node_types` asserts `RVOCIO` is still absent, so if the node type ever appears the scenario fails and the row can be pinned properly. Marked ❌ rather than ⬜ — it is not missing coverage, it is a defect upstream of this migration. |
+| — | **`nodeAspect(node)` ignores its argument**, measuring `viewNode()` instead (`transform_manip.mu:294`), so `fitAll`'s scale is always `1.0` and "Fit All Images" only resets transforms. Pinned as-is in `unit/test_transform_manip_mode.py`. |
+
+## Scenarios (37 gated golden tests)
+
+`sm_folder_thumbnails_all` is the 38th golden directory; it runs after the gates via
+`run_folder_thumbnails_all.sh` rather than inside them, because it loads every clip
+in the fixture folder and takes minutes.
+
+| ID | Primary outcome(s) | Coverage | Skip from |
+|---|---|---|---|
+| `sm_tree_categories` | #1 | A1, A2, A7, A9 | — |
+| `sm_tree_columns` | — | A10 | — |
+| `sm_tree_event_newnode` | — | M1, M4 | — |
+| `sm_tree_event_clear` | — | M3 | — |
+| `sm_subcomponent_icons` | — | M6 | — |
+| `sm_add_node_types` | — | C4, C5, C6, C7 | — |
+| `sm_add_movieproc_blank` | — | C14 | — |
+| `sm_folder_from_copy` | — | D3 | — |
+| `sm_delete_multi` | — | E5 | — |
+| `sm_delete_in_folder` | — | E2 | — |
+| `sm_inputs_disabled_for_source` | — | G9 | — |
+| `sm_inputs_preview_widget` | — | G2 | — |
+| `sm_editor_tab_per_type` | — | J4 | — |
+| `sm_folder_thumbnails` | #8 | I2, I5, I7, I8, I9, M7 | — |
+| `sm_tree_folder_sort` | — | A5, A6 | — |
+| `sm_select_node` | #2 | B1, B7, B8, B9 | — |
+| `sm_subcomponent_select` | — | B3, B4, A3, A4 | — |
+| `sm_nav_prev_next` | — | B5, B6 | — |
+| `sm_add_sequence` | #5 | C1, G1, G3 | — |
+| `sm_add_stack` | #5 | C2 | — |
+| `sm_add_switch` | — | C3 | — |
+| `sm_add_folder_empty` | — | D1 | — |
+| `sm_add_folder_from_selection` | — | D2 | — |
+| `sm_add_movieproc_black` | #4 | C9 | — |
+| `sm_add_movieproc_solid` | #4 | C10, C16 | — |
+| `sm_add_movieproc_bars` | #4 | C11 | — |
+| `sm_add_movieproc_colorchart` | #4 | C12, C13 | — |
+| `sm_delete_source` | #3 | E1, M2 | — |
+| `sm_delete_folder` | — | E3 | — |
+| `sm_inputs_reorder` | #7 | G4, G5 | — |
+| `sm_inputs_sort` | #7 | G6, G7, G8 | — |
+| `sm_inputs_delete` | — | E4 | — |
+| `sm_rename_inline` | #6 | F3, F4, M5 | — |
+| `sm_previews_toggle` | — | I1, I2, I6, I9 | — |
+| `sm_meridian_mp4_load` | #8 | I5, I7, I8, M7 | — |
+| `sm_media_add_sources` | — | I5, M7 | — |
+| `sm_mp4_all` | #8 | I7, I8, G1, C1 | — |
+
+---
+
+## Mu methods → Python unit tests
+
+**Mandatory gate 5.** The suite passes (1078 tests) and is not vacuous. Every one of
+the 335 Mu symbols across all twelve Mu sources now maps to either a unit test on the
+ported symbol or a ➖ row explaining why there is nothing to test and naming what does
+cover it. (An earlier version of this table listed 107 rows from
+`session_manager.mu.in` only and omitted the eleven sibling modes entirely.)
+
+**Unit tests exercise the port.** Every module under `unit/` imports the real module
+from `src/plugins/rv-packages/session_manager/` through `unit/_rv_stubs.py`, which
+fakes only the `rv.*` bindings. This is worth stating because it was not previously
+true: until this iteration all sixteen modules asserted against logic re-implemented
+inside the test files, and the whole suite passed with `session_manager.py` deleted.
+`harness/run_unit_tests.sh` now runs under RV's bundled interpreter (the tests need
+the same PySide6 the port runs against) and fails if zero tests execute, so an
+all-skipped run can no longer read as a pass.
+
+**Statuses.** ✅ a unit test exercises the ported symbol. ➖ there is no ported
+symbol to test — either the Mu helper was inlined as a Python built-in, or it is dead
+in Mu, or it cannot be reached headlessly and is pinned by the golden gates instead.
+Each ➖ row says which, and names whatever does cover it.
+
+| Mu source | Symbols | ✅ unit-tested | ➖ n/a |
+|---|---:|---:|---:|
+| `session_manager.mu.in` | 144 | 138 | 6 |
+| `Composite_edit_mode.mu` | 11 | 11 | 0 |
+| `FolderGroup_edit_mode.mu` | 9 | 9 | 0 |
+| `LayoutGroup_edit_mode.mu` | 33 | 33 | 0 |
+| `RetimeGroup_edit_mode.mu` | 20 | 20 | 0 |
+| `SequenceGroup_edit_mode.mu` | 19 | 19 | 0 |
+| `SourceGroup_edit_mode.mu` | 23 | 23 | 0 |
+| `StackGroup_edit_mode.mu` | 7 | 7 | 0 |
+| `Stack_edit_mode.mu` | 21 | 21 | 0 |
+| `SwitchGroup_edit_mode.mu` | 5 | 5 | 0 |
+| `Switch_edit_mode.mu` | 18 | 18 | 0 |
+| `transform_manip.mu` | 25 | 25 | 0 |
+| **TOTAL** | **335** | **329** | **6** |
+
+
+
session_manager.mu.in — 144 symbols, 58 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `EventFilter` | `unit/test_mode_events.py::TestEventFilter` | ✅ |
+| `FilmstripWidget` | `unit/test_preview_widgets.py::TestFilmstripWidget` | ✅ |
+| `InputsView` | `unit/test_tree_view.py::TestInputsView` | ✅ |
+| `NodeModel` | `unit/test_node_model.py` | ✅ |
+| `NodeTreeView` | `unit/test_tree_view.py` | ✅ |
+| `SessionManagerMode` | *constructing the mode segfaults headlessly — pinned by gates 0–4* — `unit/test_mode_slots.py::TestConstructionIsNotUnitTestable` | ➖ |
+| `SourcePreviewWidget` | `unit/test_preview_widgets.py::TestSourcePreviewWidget` | ✅ |
+| `ThumbnailWidget` | `unit/test_preview_widgets.py::TestThumbnailWidget` | ✅ |
+| `activate` | `unit/test_mode_events.py::TestActivateDeactivate` | ✅ |
+| `addEditor` | `unit/test_mode_slots.py::TestEditorTabs` | ✅ |
+| `addInput` | `unit/test_node_ops.py::TestAddInput` | ✅ |
+| `addMovieProc` | `unit/test_mode_dialogs.py::TestCreateImageDialog` | ✅ |
+| `addNodeByTypeName` | `unit/test_mode_dialogs.py::TestNewNodeByTypeDialog` | ✅ |
+| `addNodeOfType` | `unit/test_mode_interactions.py::TestNewNodeByTypeDialog` | ✅ |
+| `addRow` | `unit/test_helpers.py::TestAddRow` | ✅ |
+| `addThingSlot` | `unit/test_mode_interactions.py::TestNewNodeByTypeDialog` | ✅ |
+| `afterGraphViewChange` | `unit/test_mode_events.py::TestGraphViewChange` | ✅ |
+| `afterProgressiveLoading` | `unit/test_mode_events.py::TestProgressiveLoading` | ✅ |
+| `assignSortOrder` | `unit/test_state_props.py::TestAssignSortOrder` | ✅ |
+| `auxFilePath` | `unit/test_mode.py::TestAuxFilePath` | ✅ |
+| `auxIcon` | `unit/test_mode_tree_build.py::TestIcons` | ✅ |
+| `beforeGraphViewChange` | `unit/test_mode_events.py::TestGraphViewChange` | ✅ |
+| `beforeProgressiveLoading` | `unit/test_mode_events.py::TestProgressiveLoading` | ✅ |
+| `chooseColorSlot` | `unit/test_mode_slots.py::TestColorSlots` | ✅ |
+| `colorAdjustedIcon` | `unit/test_mode_tree_build.py::TestIcons` | ✅ |
+| `componentAndFolderNodeFromHash` | `unit/test_mode_tree_build.py::TestSourceFromSubComponent` | ✅ |
+| `componentMatch` | `unit/test_helpers.py::TestComponentMatch` | ✅ |
+| `configSlot` | `unit/test_mode.py::TestConfigSlot` | ✅ |
+| `contains` | *inlined as Python `in`* — `unit/test_state_props.py::TestSubComponentExpanded` | ➖ |
+| `createMode` | *constructing the mode segfaults headlessly — pinned by gates 0–4* — `unit/test_mode_slots.py::TestConstructionIsNotUnitTestable` | ➖ |
+| `deactivate` | `unit/test_mode_events.py::TestActivateDeactivate` | ✅ |
+| `deleteViewableSlot` | `unit/test_mode_slots.py::TestDeleteViewableSlot` | ✅ |
+| `dragEnterEvent` | `unit/test_tree_view.py::TestDragEnterEvent` | ✅ |
+| `dragMoveEvent` | `unit/test_tree_view.py::TestDragMoveEvent` | ✅ |
+| `dropEvent` | `unit/test_mode_dialogs.py::TestDropEvent` | ✅ |
+| `editViewInfoSlot` | `unit/test_mode_interactions.py::TestEditViewInfoSlot` | ✅ |
+| `enterQuittingState` | `unit/test_mode_events.py::TestQuittingAndCategory` | ✅ |
+| `event` | `unit/test_preview_widgets.py::TestSourcePreviewWidget` | ✅ |
+| `eventFilter` | `unit/test_mode_events.py::TestEventFilter` | ✅ |
+| `filteredDraggedPaths` | `unit/test_tree_view.py::TestFilteredDraggedPaths` | ✅ |
+| `hasInput` | `unit/test_node_ops.py::TestHasInput` | ✅ |
+| `hashedSubComponent` | `unit/test_hashed_subcomponent.py` | ✅ |
+| `iconForNode` | `unit/test_mode.py::TestIconForNode` | ✅ |
+| `includes` | `unit/test_helpers.py::TestIncludes` | ✅ |
+| `indexOf` | *inlined as `list.index()`* — `unit/test_state_props.py::TestAssignSortOrder` | ➖ |
+| `indexOfItem` | *dead in Mu — defined, never called; not ported* | ➖ |
+| `inputRowsInsertedSlot` | `unit/test_mode_events.py::TestInputRowSlots` | ✅ |
+| `inputRowsRemovedSlot` | `unit/test_mode_events.py::TestInputRowSlots` | ✅ |
+| `inputsDeleteSlot` | `unit/test_mode_panel.py::TestInputsDeleteSlot` | ✅ |
+| `isExpandedInParent` | `unit/test_state_props.py::TestExpandedInParent` | ✅ |
+| `isImageRequestPropEqual` | `unit/test_image_request.py::TestIsImageRequestPropEqual` | ✅ |
+| `isLoaded` | `unit/test_preview_widgets.py::TestFilmstripWidget` | ✅ |
+| `isSubComponentExpanded` | `unit/test_state_props.py::TestSubComponentExpanded` | ✅ |
+| `itemIsSubComponent` | `unit/test_helpers.py::TestSubComponentType` | ✅ |
+| `itemNode` | `unit/test_helpers.py::TestItemNode` | ✅ |
+| `itemOfNode` | `unit/test_helpers.py::TestMapItems` | ✅ |
+| `itemParentNode` | `unit/test_helpers.py::TestSubComponentAccessors` | ✅ |
+| `itemPressed` | `unit/test_mode_slots.py::TestItemPressed` | ✅ |
+| `itemSubComponentHash` | `unit/test_helpers.py::TestSubComponentAccessors` | ✅ |
+| `itemSubComponentMedia` | `unit/test_helpers.py::TestSubComponentAccessors` | ✅ |
+| `itemSubComponentStringData` | `unit/test_helpers.py::TestSubComponentAccessors` | ✅ |
+| `itemSubComponentType` | `unit/test_helpers.py::TestSubComponentType` | ✅ |
+| `itemSubComponentTypeForName` | `unit/test_helpers.py::TestSubComponentTypeForName` | ✅ |
+| `itemSubComponentValue` | `unit/test_helpers.py::TestSubComponentAccessors` | ✅ |
+| `load` | `unit/test_preview_widgets.py` | ✅ |
+| `loadStrip` | `unit/test_preview_widgets.py::TestSourcePreviewWidget` | ✅ |
+| `loadThumbnail` | `unit/test_preview_widgets.py::TestSourcePreviewWidget` | ✅ |
+| `mainWinVisTimeout` | `unit/test_mode_events.py::TestVisibility` | ✅ |
+| `makeImage` | `unit/test_mode_dialogs.py::TestCreateImageDialog` | ✅ |
+| `makeNewNodeOfType` | `unit/test_mode_dialogs.py::TestNewNodeByTypeDialog` | ✅ |
+| `makeSourceRowWidget` | `unit/test_mode_tree_build.py::TestMakeSourceRowWidget` | ✅ |
+| `map` | `unit/test_helpers.py::TestMapItems` | ✅ |
+| `mapOverItem` | `unit/test_mode_tree_build.py::TestMapOverItem` | ✅ |
+| `mimeData` | `unit/test_node_model.py::TestMimeData` | ✅ |
+| `mimeTypes` | `unit/test_node_model.py::TestMimeTypes` | ✅ |
+| `mouseMoveEvent` | `unit/test_preview_widgets.py::TestFilmstripWidget` | ✅ |
+| `navButtonClicked` | `unit/test_mode.py::TestNavButtonClicked` | ✅ |
+| `newColorSlot` | `unit/test_mode_slots.py::TestColorSlots` | ✅ |
+| `newFolderSlot` | `unit/test_mode_dialogs.py::TestNewFolderSlot` | ✅ |
+| `newNodeRow` | `unit/test_mode_tree_build.py::TestNewNodeRow` | ✅ |
+| `newNodeStatusColumns` | `unit/test_mode_tree_build.py::TestNewNodeRow` | ✅ |
+| `newNodeSubComponent` | `unit/test_mode_tree_build.py::TestSubComponentRows` | ✅ |
+| `newSubComponentNode` | `unit/test_mode_tree_build.py::TestSourceFromSubComponent` | ✅ |
+| `nodeFromIndex` | `unit/test_helpers.py::TestNodeFromIndex` | ✅ |
+| `nodeInputs` | `unit/test_helpers.py::TestNodeInputs` | ✅ |
+| `nodeInputsChanged` | `unit/test_mode_events.py::TestNodeInputsChanged` | ✅ |
+| `onCategoryStateChanged` | `unit/test_mode_events.py::TestQuittingAndCategory` | ✅ |
+| `printRows` | `unit/test_mode_slots.py::TestPrintRows` | ✅ |
+| `propertyChanged` | `unit/test_mode_events.py::TestPropertyChanged` | ✅ |
+| `rebuildInputsFromList` | `unit/test_mode_panel.py::TestRebuildInputsFromList` | ✅ |
+| `reloadEditorTab` | `unit/test_mode_slots.py::TestEditorTabs` | ✅ |
+| `remove` | *inlined as a list comprehension* — `unit/test_state_props.py::TestSubComponentExpanded` | ➖ |
+| `removeInput` | `unit/test_node_ops.py::TestRemoveInput` | ✅ |
+| `renameByType` | `unit/test_rename.py::TestRenameByType` | ✅ |
+| `reorderSelected` | `unit/test_mode_slots.py::TestReorderSelected` | ✅ |
+| `resizeColumns` | `unit/test_helpers.py::TestResizeColumns` | ✅ |
+| `restoreTabState` | `unit/test_mode.py::TestTabState` | ✅ |
+| `saveTabState` | `unit/test_mode.py::TestTabState` | ✅ |
+| `selectCurrentViewSlot` | `unit/test_mode_slots.py::TestViewSelectionChanged` | ✅ |
+| `selectInputsRange` | `unit/test_mode_slots.py::TestSelectInputsRange` | ✅ |
+| `selectViewableNode` | `unit/test_mode_panel.py::TestSelectViewableNode` | ✅ |
+| `selectedConvertedSubComponents` | `unit/test_mode_slots.py::TestSelectionReaders` | ✅ |
+| `selectedItems` | `unit/test_mode_slots.py::TestSelectionReaders` | ✅ |
+| `selectedNodePaths` | `unit/test_tree_view.py::TestSelectedNodePaths` | ✅ |
+| `selectedNodes` | `unit/test_sort_inputs.py (via selectedNodesEvent)` | ✅ |
+| `selectedNodesEvent` | `unit/test_cross_package_api.py::TestSelectedNodesEvent` | ✅ |
+| `setExpandedInParent` | `unit/test_state_props.py::TestExpandedInParent` | ✅ |
+| `setFallback` | `unit/test_preview_widgets.py::TestThumbnailWidget` | ✅ |
+| `setImageRequest` | `unit/test_image_request.py::TestSetImageRequestToggle` | ✅ |
+| `setImageRequestProp` | `unit/test_image_request.py::TestSetImageRequestProp` | ✅ |
+| `setInputs` | `unit/test_node_ops.py::TestSetInputs` | ✅ |
+| `setItemExpandedState` | `unit/test_mode_panel.py::TestSetItemExpandedState` | ✅ |
+| `setNodeRequest` | `unit/test_image_request.py::TestSetNodeRequest` | ✅ |
+| `setNodeStatus` | `unit/test_mode.py::TestSetNodeStatus` | ✅ |
+| `setSortKeyInParent` | `unit/test_state_props.py::TestSortKey` | ✅ |
+| `setSubComponentExpanded` | `unit/test_state_props.py::TestSubComponentExpanded` | ✅ |
+| `setToolTipProp` | `unit/test_state_props.py::TestToolTipProp` | ✅ |
+| `showFrameAtX` | `unit/test_preview_widgets.py::TestFilmstripWidget` | ✅ |
+| `showRows` | `unit/test_mode_slots.py::TestPrintRows` | ✅ |
+| `sortFolderChildren` | `unit/test_tree_view.py::TestSortFolderChildren` | ✅ |
+| `sortFolders` | `unit/test_tree_view.py::TestSortFolders` | ✅ |
+| `sortInputs` | `unit/test_sort_inputs.py` | ✅ |
+| `sortKeyInParent` | `unit/test_state_props.py::TestSortKey` | ✅ |
+| `sourceFromSubComponent` | `unit/test_mode_tree_build.py::TestSourceFromSubComponent` | ✅ |
+| `sourceNodeOfGroup` | `unit/test_helpers.py::TestSourceNodeOfGroup` | ✅ |
+| `splitterMoved` | `unit/test_mode.py::TestSplitterMoved` | ✅ |
+| `subComponentItemsOfNode` | `unit/test_helpers.py::TestSubComponentItemsOfNode` | ✅ |
+| `subComponentPropValue` | `unit/test_subcomponent_prop.py` | ✅ |
+| `tabChangeSlot` | `unit/test_mode.py::TestTabState` | ✅ |
+| `theMode` | `unit/test_cross_package_api.py::TestSelectedNodeLines` | ✅ |
+| `togglePreviews` | `unit/test_mode.py::TestTogglePreviews` | ✅ |
+| `toolTipFromProp` | `unit/test_state_props.py::TestToolTipProp` | ✅ |
+| `updateInputs` | `unit/test_mode_panel.py::TestUpdateInputs` | ✅ |
+| `updateNavUI` | `unit/test_mode_panel.py::TestUpdateNavUI` | ✅ |
+| `updateNodePreviewEvent` | `unit/test_mode_tree_build.py::TestUpdateNodePreviewEvent` | ✅ |
+| `updateTree` | `unit/test_mode_tree_build.py::TestUpdateTree` | ✅ |
+| `updateTreeEvent` | `unit/test_mode_events.py::TestProgressiveLoading` | ✅ |
+| `useEditor` | `unit/test_mode_slots.py::TestEditorTabs` | ✅ |
+| `viewByIndex` | `unit/test_mode_interactions.py::TestViewByIndex` | ✅ |
+| `viewContextMenuSlot` | `unit/test_mode_interactions.py::TestContextMenuConstruction` | ✅ |
+| `viewEditModeActivated` | `unit/test_mode_events.py::TestGraphViewChange` | ✅ |
+| `viewItemChanged` | `unit/test_mode_dialogs.py::TestViewItemChanged` | ✅ |
+| `viewSelectionChanged` | `unit/test_mode_slots.py::TestViewSelectionChanged` | ✅ |
+| `visibilityChanged` | `unit/test_mode_events.py::TestVisibility` | ✅ |
+
+

+
+
Composite_edit_mode.mu — 11 symbols, 5 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `CompositeEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestCompositeLoadUI` | ✅ |
+| `opState` | `unit/test_edit_mode_menus.py::TestCompositeMenu` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_menus.py::TestCompositeMenu` | ✅ |
+| `setDissolveAmount` | `unit/test_composite_edit_mode.py::TestDissolveAmount` | ✅ |
+| `setDissolveAmountFromSlider` | `unit/test_composite_edit_mode.py::TestDissolveAmount` | ✅ |
+| `setOp` | `unit/test_composite_edit_mode.py::TestSetOp` | ✅ |
+| `setOpEvent` | `unit/test_composite_edit_mode.py::TestSetOp` | ✅ |
+| `updateUI` | `unit/test_composite_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+
+

+
+
FolderGroup_edit_mode.mu — 9 symbols, 2 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `FolderGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_edit_mode_slots.py::TestFolderActivateUI` | ✅ |
+| `activateUI` | `unit/test_edit_mode_slots.py::TestFolderActivateUI` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `deactivate` | `unit/test_edit_mode_slots.py::TestFolderActivateUI` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestFolderLoadUI` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_slots.py::TestFolderPropertyChanged` | ✅ |
+| `setViewType` | `unit/test_folder_group_edit_mode.py::TestSetViewType` | ✅ |
+| `updateUI` | `unit/test_folder_group_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+
+

+
+
LayoutGroup_edit_mode.mu — 33 symbols, 13 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `LayoutGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_edit_mode_slots.py::TestLayoutActivation` | ✅ |
+| `activateTransformMode` | `unit/test_edit_mode_slots.py::TestLayoutActivation` | ✅ |
+| `activateUI` | `unit/test_edit_mode_slots.py::TestLayoutActivation` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `deactivate` | `unit/test_edit_mode_slots.py::TestLayoutActivation` | ✅ |
+| `gridColumnsChangedSlot` | `unit/test_edit_mode_slots.py::TestLayoutSlots` | ✅ |
+| `gridRowsChangedSlot` | `unit/test_edit_mode_slots.py::TestLayoutSlots` | ✅ |
+| `isLayoutMode` | `unit/test_layout_group_edit_mode.py::TestIsLayoutMode` | ✅ |
+| `layoutInColumn` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutInColumnEvent` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `layoutInGrid` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutInGridEvent` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `layoutInRow` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutInRowEvent` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `layoutManually` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutManuallyEvent` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `layoutMode` | `unit/test_layout_group_edit_mode.py::TestLayoutMode` | ✅ |
+| `layoutPacked` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutPacked2` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutPacked2Event` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `layoutPackedEvent` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `layoutStatic` | `unit/test_layout_group_edit_mode.py::TestLayoutSelectors` | ✅ |
+| `layoutStaticEvent` | `unit/test_edit_mode_slots.py::TestLayoutMenuEvents` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestLayoutLoadUI` | ✅ |
+| `modeComboChangedSlot` | `unit/test_edit_mode_slots.py::TestLayoutSlots` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_slots.py::TestLayoutPropertyChanged` | ✅ |
+| `setGridRowsColumns` | `unit/test_layout_group_edit_mode.py::TestSpacingAndGrid` | ✅ |
+| `setLayoutMode` | `unit/test_layout_group_edit_mode.py::TestLayoutMode` | ✅ |
+| `setSpacing` | `unit/test_layout_group_edit_mode.py::TestSpacingAndGrid` | ✅ |
+| `spacingSliderChangedSlot` | `unit/test_edit_mode_slots.py::TestLayoutSlots` | ✅ |
+| `updateUI` | `unit/test_layout_group_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+
+

+
+
RetimeGroup_edit_mode.mu — 20 symbols, 5 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `RetimeGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `convertToFPS` | `unit/test_edit_mode_slots.py::TestRetimeConvertToFPS` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `editSlot` | `unit/test_edit_mode_slots.py::TestRetimeSlots` | ✅ |
+| `factorPrompt` | `unit/test_edit_mode_slots.py::TestRetimePrompts` | ✅ |
+| `fpsPrompt` | `unit/test_edit_mode_slots.py::TestRetimePrompts` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestRetimeLoadUI` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_slots.py::TestRetimePropertyChanged` | ✅ |
+| `reset` | `unit/test_retime_group_edit_mode.py::TestReset` | ✅ |
+| `resetSlot` | `unit/test_edit_mode_slots.py::TestRetimeSlots` | ✅ |
+| `resetTiming` | `unit/test_edit_mode_slots.py::TestRetimeSlots` | ✅ |
+| `reverse` | `unit/test_retime_group_edit_mode.py::TestReverse` | ✅ |
+| `reverseSlot` | `unit/test_edit_mode_slots.py::TestRetimeSlots` | ✅ |
+| `reverseTiming` | `unit/test_edit_mode_slots.py::TestRetimeSlots` | ✅ |
+| `setConvertFPS` | `unit/test_retime_group_edit_mode.py::TestSetConvertFPS` | ✅ |
+| `setFactorValue` | `unit/test_retime_group_edit_mode.py::TestSetFactorValue` | ✅ |
+| `slowDownPrompt` | `unit/test_edit_mode_slots.py::TestRetimePrompts` | ✅ |
+| `speedUpPrompt` | `unit/test_edit_mode_slots.py::TestRetimePrompts` | ✅ |
+| `updateUI` | `unit/test_retime_group_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+
+

+
+
SequenceGroup_edit_mode.mu — 19 symbols, 7 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `SequenceGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `activateUI` | `unit/test_edit_mode_ui_loading.py::TestSequenceLoadUI` | ✅ |
+| `afterSessionRead` | `unit/test_sequence_group_edit_mode.py::TestSessionReadFreeze` | ✅ |
+| `autoEDL` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `beforeSessionRead` | `unit/test_sequence_group_edit_mode.py::TestSessionReadFreeze` | ✅ |
+| `checkBoxSlot` | `unit/test_sequence_group_edit_mode.py::TestCheckBoxSlot` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `fpsChanged` | `unit/test_sequence_group_edit_mode.py::TestFpsChanged` | ✅ |
+| `heightChanged` | `unit/test_sequence_group_edit_mode.py::TestSizeEdits` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestSequenceLoadUI` | ✅ |
+| `menu` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `stateFunc` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `updateUI` | `unit/test_sequence_group_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+| `updateUIEvent` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `useCutInfo` | `unit/test_edit_mode_menus.py::TestSequenceMenu` | ✅ |
+| `widthChanged` | `unit/test_sequence_group_edit_mode.py::TestSizeEdits` | ✅ |
+
+

+
+
SourceGroup_edit_mode.mu — 23 symbols, 9 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `SourceGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_edit_mode_slots.py::TestSourceUpdateFromProps` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `changedSlot` | `unit/test_edit_mode_slots.py::TestSourceChangedSlot` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `cutInPrompt` | `unit/test_source_group_edit_mode.py::TestPrompts` | ✅ |
+| `cutOutPrompt` | `unit/test_source_group_edit_mode.py::TestPrompts` | ✅ |
+| `finishedSlot` | `unit/test_edit_mode_slots.py::TestSourceFinishedSlot` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestSourceLoadUI` | ✅ |
+| `newInPoint` | `unit/test_source_group_edit_mode.py::TestNewInOutPoint` | ✅ |
+| `newOutPoint` | `unit/test_source_group_edit_mode.py::TestNewInOutPoint` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_slots.py::TestSourceResetAndPropertyChanged` | ✅ |
+| `reset` | `unit/test_source_group_edit_mode.py::TestReset` | ✅ |
+| `resetCut` | `unit/test_source_group_edit_mode.py::TestReset` | ✅ |
+| `resetSlot` | `unit/test_edit_mode_slots.py::TestSourceResetAndPropertyChanged` | ✅ |
+| `setCutValue` | `unit/test_source_group_edit_mode.py::TestSetCutValue` | ✅ |
+| `sourceMenuState` | `unit/test_edit_mode_slots.py::TestSourceSyncGuiInOut` | ✅ |
+| `syncGuiInOut` | `unit/test_edit_mode_slots.py::TestSourceSyncGuiInOut` | ✅ |
+| `syncSlot` | `unit/test_source_group_edit_mode.py::TestSyncSlot` | ✅ |
+| `syncState` | `unit/test_edit_mode_slots.py::TestSourceSyncGuiInOut` | ✅ |
+| `toggleSync` | `unit/test_edit_mode_slots.py::TestSourceToggleSync` | ✅ |
+| `updateFromProps` | `unit/test_edit_mode_slots.py::TestSourceUpdateFromProps` | ✅ |
+| `updateUI` | `unit/test_source_group_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+
+

+
+
StackGroup_edit_mode.mu — 7 symbols, 0 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `StackGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_group_edit_modes.py::TestStackGroupEditMode` | ✅ |
+| `activateUI` | `unit/test_group_edit_modes.py::TestStackGroupEditMode` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `deactivate` | `unit/test_group_edit_modes.py::TestStackGroupEditMode` | ✅ |
+| `propertyChanged` | `unit/test_group_edit_modes.py::TestStackGroupEditMode` | ✅ |
+
+

+
+
Stack_edit_mode.mu — 21 symbols, 6 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `StackEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `alignStartFrames` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `autoRetimeInputs` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `checkBoxSlot` | `unit/test_stack_edit_mode.py::TestCheckBoxSlot` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `fpsChanged` | `unit/test_stack_edit_mode.py::TestFpsChanged` | ✅ |
+| `heightChanged` | `unit/test_stack_edit_mode.py::TestSizeEdits` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestStackLoadUI` | ✅ |
+| `menu` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `retimeState` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `setChosenAudioInput` | `unit/test_stack_edit_mode.py::TestSetChosenAudioInput` | ✅ |
+| `stateFunc` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `strictFrameRanges` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `updateMenu` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `updateUI` | `unit/test_stack_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+| `updateUIEvent` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `useCutInfo` | `unit/test_edit_mode_menus.py::TestStackMenu` | ✅ |
+| `widthChanged` | `unit/test_stack_edit_mode.py::TestSizeEdits` | ✅ |
+
+

+
+
SwitchGroup_edit_mode.mu — 5 symbols, 0 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `SwitchGroupEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_group_edit_modes.py::TestSwitchGroupEditMode` | ✅ |
+| `activateUI` | `unit/test_group_edit_modes.py::TestSwitchGroupEditMode` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `deactivate` | `unit/test_group_edit_modes.py::TestSwitchGroupEditMode` | ✅ |
+
+

+
+
Switch_edit_mode.mu — 18 symbols, 3 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `SwitchEditMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `alignStartFrames` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `auxFilePath` | `unit/test_edit_mode_factories.py::TestAuxFilePath` | ✅ |
+| `checkBoxSlot` | `unit/test_switch_edit_mode.py::TestCheckBoxSlot` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `heightChanged` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `loadUI` | `unit/test_edit_mode_ui_loading.py::TestSwitchLoadUI` | ✅ |
+| `menu` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `propertyChanged` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `retimeState` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `setSelectedInput` | `unit/test_switch_edit_mode.py::TestSetSelectedInput` | ✅ |
+| `stateFunc` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `updateMenu` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `updateUI` | `unit/test_switch_edit_mode.py::TestUpdateUIWithoutPanel` | ✅ |
+| `updateUIEvent` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `useCutInfo` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+| `widthChanged` | `unit/test_edit_mode_menus.py::TestSwitchMenu` | ✅ |
+
+

+
+
transform_manip.mu — 25 symbols, 6 tested
+
+| Mu symbol | Python test | Status |
+|---|---|---|
+| `TransformManip` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `activate` | `unit/test_transform_manip_render.py::TestActivate` | ✅ |
+| `activeImageIndex` | `unit/test_transform_manip_mode.py::TestActiveImageIndex` | ✅ |
+| `afterGraphViewChange` | `unit/test_transform_manip_mode.py::TestTagLifecycle` | ✅ |
+| `beforeGraphViewChange` | `unit/test_transform_manip_mode.py::TestTagLifecycle` | ✅ |
+| `closestPointOnLine` | `unit/test_transform_manip.py::TestClosestPointOnLine` | ✅ |
+| `computeGC` | `unit/test_transform_manip.py::TestComputeGC` | ✅ |
+| `control` | `unit/test_transform_manip_mode.py::TestControlHitTest` | ✅ |
+| `createMode` | `unit/test_edit_mode_factories.py::TestCreateMode` | ✅ |
+| `deactivate` | `unit/test_transform_manip_pointer.py::TestDeactivate` | ✅ |
+| `drag` | `unit/test_transform_manip_pointer.py::TestDragFreeTranslation` | ✅ |
+| `drawCorners` | `unit/test_transform_manip_render.py::TestRenderCorners` | ✅ |
+| `editNode` | `unit/test_transform_manip_mode.py::TestEditNode` | ✅ |
+| `findEditingNodes` | `unit/test_transform_manip_mode.py::TestTagLifecycle` | ✅ |
+| `fitAll` | `unit/test_transform_manip_mode.py::TestFitAll` | ✅ |
+| `move` | `unit/test_transform_manip_pointer.py::TestMove` | ✅ |
+| `nodeAspect` | `unit/test_transform_manip_mode.py::TestNodeAspect` | ✅ |
+| `nodeInputsChanged` | `unit/test_transform_manip_mode.py::TestTagLifecycle` | ✅ |
+| `push` | `unit/test_transform_manip_pointer.py::TestPush` | ✅ |
+| `release` | `unit/test_transform_manip_pointer.py::TestRelease` | ✅ |
+| `removeTags` | `unit/test_transform_manip_mode.py::TestTagLifecycle` | ✅ |
+| `render` | `unit/test_transform_manip_render.py::TestRenderOutline` | ✅ |
+| `resetAll` | `unit/test_transform_manip_mode.py::TestResetAll` | ✅ |
+| `setManipState` | `unit/test_transform_manip_mode.py::TestSetManipState` | ✅ |
+| `tagValue` | `unit/test_transform_manip.py::TestTagValue` | ✅ |
+
+

+
+
+### The six ➖ rows
+
+Four are Mu list helpers with no Python counterpart. `contains`, `indexOf` and
+`remove` are one-line loops over a `string[]`; the port spells them `in`,
+`list.index()` and a comprehension at each call site, and those call sites are
+covered. `indexOfItem` is defined in Mu and never called, so it was not ported.
+
+The other two are `SessionManagerMode` (the constructor) and `createMode`.
+Constructing the mode parents a dock widget to the session window and then
+**segfaults** under the offscreen platform — exit 139, reproducible — somewhere in
+the dock/WebEngine path. Every other method on the mode is reachable by building the
+instance with `object.__new__` and attaching the two or three real widgets it
+touches, which is how the panel, event, slot, tree and dialog test modules work. The
+constructor itself is left to the golden gates: gate 3 launches RV with the package
+loaded and all 38 scenarios drive a constructed mode.
+
+## Harness fixes this iteration
+
+Four things were wrong with the capture/compare path, not with the port. All four had
+been quietly weakening or destabilising the pixel gate; gate 2 went from 17/37 to
+37/37 once they were fixed.
+
+**Mouse hover leaked into every grab.** `QWidget.grab()` renders current widget state,
+and hover is part of it: the tree row under the physical pointer painted highlighted
+and a toolbar button under it painted raised. Nothing controlled where the pointer
+was, so the same scenario put an extra highlight on `OTHER` in one run and on
+`Default Stack` in the next. `qt_scenario_utils.clear_hover()` now runs before every
+grab. It has to clear two separate mechanisms: an item view keeps a private hover
+*index* (cleared by `HoverLeave`), while a button reads `WA_UnderMouse`. Clearing only
+the first left a 2/255 difference on one pixel of the inputs panel's trash button.
+
+**`findChildren()` is not safe under a `wrapInstance` root.** The first version of
+`clear_hover` enumerated the panel's children that way and left the caller's
+`QTreeView` reference dead — "Internal C++ object already deleted" in six scenarios.
+Reducing the function to the bare enumeration still killed them, so it is the
+enumeration itself: minting a second set of wrappers inside that tree invalidates the
+first. `QApplication.allWidgets()` is what the `_sm_common` accessors already use and
+does not have the problem. Worth knowing beyond this package.
+
+**Alpha channel presence was unstable.** Qt's opacity heuristic gave an RGB pixmap one
+run and RGBA the next, and `rmsImageDiff` rejects that outright with "channel size
+does not match" instead of reporting a pixel difference — so the gate could not say
+what had changed. Grabs now normalise to `QImage.Format_RGB888`.
+
+**`rmsImageDiff -cmp` exits 0 on a mismatch.** It only returns non-zero when it cannot
+compare the files at all. `compare.py` was already correct (it parses the
+"Images are matched." verdict from stdout), but an ad-hoc `rmsImageDiff ... && echo
+same` reports every mismatch as a match, and that is how a reproducible gate failure
+was briefly misread as flakiness. The comment in `compare.py` now states the trap
+explicitly.
+
+**Baselines are rendering-state sensitive.** During one full re-capture the machine's
+text rasterisation changed partway through, leaving the first 18 baselines in one
+state and the rest in another; the 18 then failed gate 2 reproducibly. Re-capturing
+them fixed it. The lesson for anyone re-capturing: capture the whole set in one
+sitting and re-run gate 2 immediately, and treat a failing set that is a contiguous
+alphabetical prefix as a capture artefact rather than a port difference.
+
+## Code review outcome (2026-08-04)
+
+Two independent agents reviewed this iteration: one comparing each `.py` port against
+its `.mu` ground truth, one on the core/harness/test changes. Every blocking finding
+below was fixed and re-verified; the loop passes all six gates afterwards.
+
+### Defects in the port
+
+| Severity | Defect | Fix |
+|---|---|---|
+| high | 12 sites called `int(Qt.CursorShape.X)`, which raises `TypeError` under PySide6 6.5 — the same trap as `Qt.CheckState`. `move()` raised before it could find an edit node, so the **transform manipulator never worked at all**, and `deactivate()` raised before `removeTags()`, leaving `tag.tmanip` properties to be saved into session files | `.value`, plus `unit/test_transform_manip_pointer.py` |
+| high | `drag()` computed the corner diagonal unconditionally. `control()` returns the centroid as the grab point for a non-corner grab, so a free-translation drag normalised `(0,0)` and raised `ZeroDivisionError` on every event. Mu survives because its float division yields NaN and that branch never reads the values | diagonal moved into the corner branch — guarding `normalize()` is **not** sufficient, since a zero direction makes `/ downDist` raise next |
+| high | The cross-package API regressed: RV dispatches internal events only to **active** modes, and `session_manager` is `load: delay`, so with the panel closed `sessionManagerSelectedNodes()` returned empty and rvnuke/maya_tools menu states silently flipped. `sourceSelected()` returns Neutral for an empty list, so its item was *enabled and did nothing* | read the mode through `selectedNodeLines()` (restores the pre-migration semantics), event kept as the Mu fallback, plus an empty-selection guard |
+| low | Mu's settings self-repair `catch` is unreachable in Python (`readSettings` coerces, `str()` cannot raise), so a corrupt `showOnStartup` is left rather than reset | recorded, not fixed — needs a product call |
+| low | drag `text/plain` renders a media list as `['a.mov']` where Mu renders `string[] {"a.mov"}` | recorded; no in-RV consumer |
+
+### Defects in the gate itself
+
+| Severity | Defect | Fix |
+|---|---|---|
+| high | `set -euo pipefail` plus `_out="$(...)"` aborted `run_unit_tests.sh` before printing why a run failed — a 350-test failure reported only "GATE 5 FAILED" | capture with `\|\| _rc=$?`; note `if ! cmd` does *not* work, as the negation makes `$?` read 0 |
+| high | `FakeGraph` treated `set*Property`'s third argument as create-if-missing. It is `allowResize`; RV throws `badProperty` first, which is why `cprop` exists. Gutting `_cprop` in the port left **every test passing** | stub made strict, 81 seeding sites moved to an explicit `seedInt/Float/String` API. Gutting `_cprop` now fails 59 tests, and the migration surfaced 6 more wrong assertions |
+| high | `GOLDEN_PYTHON` skipped the PySide6 check, so a stock interpreter made every module skip and the gate pass on zero tests | override is checked too; the "0 tests ran" guard now reads the executed count from either runner |
+| medium | `stage_python_modes()` never removed orphans, and staged dirs precede the package on `PYTHONPATH` — a deleted module kept loading from its stale staged copy, so gates passed against code no longer in the tree | per-package manifest; orphans are un-staged and logged |
+| medium | The automatic Mu fallback in `mode_manager.mu` was unsound: a Python mode registers itself inside `init()`, so a later constructor failure left it registered and the Mu module's own `defineMinorMode` threw "Duplicate mode" — swallowed into a `showWarning` that is silent without `-ModeManagerVerbose`. Net effect: no mode and no message | fallback removed; a Python implementation that exists and fails now reports loudly |
+| medium | No test covered the cross-package API at all; both entry points survived mutation to `return None` | `unit/test_cross_package_api.py` |
+| low | Two tests could not fail (`updateUI` freeze with `_ui` None; a hover assertion that `QWidget.event` already satisfies) | one removed as redundant, one rewritten to test the override's side effect |
+
+### Confirmed sound
+
+Both reviewers checked and found faithful: all ~56 property-setter overload choices,
+the Mu cons-list ordering elsewhere in the port, `nil`/`None`/`""` distinctions,
+index arithmetic, exception scope and flag leakage, every other PySide6 enum use, the
+`requestedModeImpl` precedence, the `find_spec` probe primitives, and test isolation.
diff --git a/src/test/golden/session_manager/capture_golden_mac.sh b/src/test/golden/session_manager/capture_golden_mac.sh
new file mode 100755
index 000000000..73447b1d1
--- /dev/null
+++ b/src/test/golden/session_manager/capture_golden_mac.sh
@@ -0,0 +1,188 @@
+#!/usr/bin/env bash
+# Capture Mac-native Mu baselines for session_manager into golden-mac//.
+#
+# Usage:
+#   ./capture_golden_mac.sh [scenario_id ...]
+#   SM_MERIDIAN_DIR=/path/to/clips ./capture_golden_mac.sh
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+RUNTIME_CHECK="$REPO_ROOT/src/test/golden/harness/runtime_log_check.py"
+RMS_IMAGE_DIFF="${RMS_IMAGE_DIFF:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/rmsImageDiff}"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden-mac"
+TIMEOUT="${TIMEOUT:-600}"
+
+export SM_MERIDIAN_DIR="${SM_MERIDIAN_DIR:-/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001}"
+
+# FORCE=1 re-captures scenarios that already have a baseline. Needed whenever the
+# RV build has moved under the goldens: a stale baseline fails every gate for
+# reasons that have nothing to do with the port.
+FORCE="${FORCE:-0}"
+
+all_scenario_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_*.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    while IFS= read -r id; do
+        if [ "$FORCE" != "1" ] && [ -f "$GOLDEN/$id/session.rv" ]; then
+            continue
+        fi
+        ids+=("$id")
+    done < <(all_scenario_ids)
+fi
+
+if [ ${#ids[@]} -eq 0 ]; then
+    echo "Nothing to capture (all golden-mac baselines present)."
+    exit 0
+fi
+
+pngs_identical() {
+    local a="$1" b="$2"
+    local out
+    out="$("$RMS_IMAGE_DIFF" -m "$a" "$b" 2>&1)" || {
+        echo "rmsImageDiff failed: $out"
+        return 1
+    }
+    if echo "$out" | grep -q "max diff at"; then
+        echo "$out" | grep "max diff at"
+        return 1
+    fi
+    return 0
+}
+
+echo "Capturing ${#ids[@]} session_manager scenario(s) --impl mu --no-xvfb, 2x determinism"
+echo "SM_MERIDIAN_DIR=$SM_MERIDIAN_DIR"
+
+fail=0
+fail_list=""
+
+for id in "${ids[@]}"; do
+    scenario="$SCENARIOS/${id}.py"
+    if [ ! -f "$scenario" ]; then
+        echo "ERROR: missing scenario $scenario" >&2
+        exit 2
+    fi
+    out1="/tmp/golden_mac_capture_sm_${id}_a"
+    out2="/tmp/golden_mac_capture_sm_${id}_b"
+    dest="$GOLDEN/$id"
+    echo "==> $id (run 1/2)"
+    rm -rf "$out1"
+    mkdir -p "$out1"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out1" --rv "$RV" \
+        --impl mu --no-xvfb --timeout "$TIMEOUT" \
+        --allow-runtime-errors; then
+        echo "FAIL $id (run 1)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if [ ! -f "$out1/session.rv" ]; then
+        echo "FAIL $id (no session.rv run 1)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    echo "==> $id (run 2/2)"
+    rm -rf "$out2"
+    mkdir -p "$out2"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out2" --rv "$RV" \
+        --impl mu --no-xvfb --timeout "$TIMEOUT" \
+        --allow-runtime-errors; then
+        echo "FAIL $id (run 2)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if [ ! -f "$out2/session.rv" ]; then
+        echo "FAIL $id (no session.rv run 2)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+
+    det_ok=1
+    if ! diff -q "$out1/session.rv" "$out2/session.rv" >/dev/null 2>&1; then
+        echo "FAIL $id: session.rv not deterministic"
+        det_ok=0
+    fi
+    tmp1="$(mktemp)" tmp2="$(mktemp)"
+    python3 "$RUNTIME_CHECK" "$out1" --write-baseline "$tmp1" >/dev/null
+    python3 "$RUNTIME_CHECK" "$out2" --write-baseline "$tmp2" >/dev/null
+    if ! diff -q "$tmp1" "$tmp2" >/dev/null 2>&1; then
+        echo "FAIL $id: runtime_errors.txt not deterministic"
+        det_ok=0
+    fi
+    rm -f "$tmp1" "$tmp2"
+    #
+    #  One scenario is exempt from PNG determinism. sm_folder_thumbnails_all loads
+    #  83 clips, and at that many rows Qt re-rasterises the row labels with
+    #  different subpixel weights between two runs of the same implementation --
+    #  same glyphs and same layout, but glyph-edge deltas up to 167/255. It is
+    #  gated behaviorally instead (see run_folder_thumbnails_all.sh), so its PNGs
+    #  are reference images for a human to eyeball, not gated baselines. The
+    #  12-clip sm_folder_thumbnails does capture deterministically and keeps the
+    #  pixel-exact check on the same panel.
+    #
+    png_determinism=1
+    case "$id" in
+        sm_folder_thumbnails_all) png_determinism=0 ;;
+    esac
+    for png in "$out1"/*.png; do
+        [ -f "$png" ] || continue
+        name="$(basename "$png")"
+        if [ ! -f "$out2/$name" ]; then
+            echo "FAIL $id: $name missing run 2"
+            det_ok=0
+            continue
+        fi
+        if ! pngs_identical "$png" "$out2/$name"; then
+            if [ "$png_determinism" -eq 0 ]; then
+                echo "note $id: $name differs between runs (text rasterisation; "\
+                     "not gated on pixels, see run_folder_thumbnails_all.sh)"
+            else
+                echo "FAIL $id: $name not deterministic"
+                det_ok=0
+            fi
+        fi
+    done
+    # Every scenario must pin its outcome in pixels, so a run that produced no PNG
+    # is a scenario bug — capturing it would bake in a baseline the pixel gate
+    # cannot check.
+    if ! compgen -G "$out1/*.png" >/dev/null 2>&1; then
+        echo "FAIL $id: scenario captured no PNG"
+        det_ok=0
+    fi
+    if [ "$det_ok" -ne 1 ]; then
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+
+    rm -rf "$dest"
+    mkdir -p "$dest"
+    cp "$out1/session.rv" "$dest/"
+    python3 "$RUNTIME_CHECK" "$out1" --write-baseline "$dest/runtime_errors.txt"
+    for png in "$out1"/*.png; do
+        [ -f "$png" ] || continue
+        cp "$png" "$dest/"
+    done
+    echo "    -> $dest ($(ls "$dest" | tr '\n' ' '))"
+done
+
+echo "---"
+if [ "$fail" -gt 0 ]; then
+    echo "FAILED:$fail_list"
+    exit 1
+fi
+echo "Capture complete."
diff --git a/src/test/golden/session_manager/fixtures/run_mp4_integration.sh b/src/test/golden/session_manager/fixtures/run_mp4_integration.sh
new file mode 100755
index 000000000..43acbf25e
--- /dev/null
+++ b/src/test/golden/session_manager/fixtures/run_mp4_integration.sh
@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+# Optional mp4 integration suite — NOT part of run_all_goldens.sh.
+# Runs sm_mp4_all in isolation with verbose output.
+#
+# Usage:
+#   ./fixtures/run_mp4_integration.sh
+#   SM_MERIDIAN_DIR=/path/to/clips ./fixtures/run_mp4_integration.sh
+#
+set -euo pipefail
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$(cd "$HERE/.." && pwd)"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+COMPARE="$REPO_ROOT/src/test/golden/harness/compare.py"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+
+export SM_MERIDIAN_DIR="${SM_MERIDIAN_DIR:-/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001}"
+GOLDEN="$PKG/golden-mac/sm_mp4_all"
+OUT="/tmp/sm_mp4_integration"
+
+echo "session_manager mp4 integration suite"
+echo "SM_MERIDIAN_DIR=$SM_MERIDIAN_DIR"
+rm -rf "$OUT"; mkdir -p "$OUT"
+
+python3 "$RUNNER" \
+    --scenario "$PKG/scenarios/sm_mp4_all.py" \
+    --out "$OUT" --rv "$RV" \
+    --impl python --no-xvfb --timeout 600
+
+echo "--- diag ---"
+cat "$OUT/diag.txt" 2>/dev/null || true
+
+if [ -f "$GOLDEN/session.rv" ]; then
+    echo "--- compare vs golden-mac ---"
+    python3 "$COMPARE" --golden-dir "$GOLDEN" --actual-dir "$OUT" --dmax 0
+fi
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/panel.png b/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/panel.png
new file mode 100644
index 000000000..973a8afd7
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/session.rv
new file mode 100644
index 000000000..a41e5d91d
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_folder_empty/session.rv
@@ -0,0 +1,953 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int FOLDERS = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "folderGroup" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+folderGroup : RVFolderGroup (1)
+{
+    ui
+    {
+        string name = "Empty Folder"
+    }
+
+    mode
+    {
+        string viewType = "switch"
+    }
+}
+
+folderGroup_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Black"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/panel.png b/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/panel.png
new file mode 100644
index 000000000..31d2b70be
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/session.rv
new file mode 100644
index 000000000..a732c31d7
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_folder_from_selection/session.rv
@@ -0,0 +1,1485 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int FOLDERS = 1
+    }
+
+    session
+    {
+        string viewNode = "folderGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "folderGroup" ] [ "sourceGroup000001" "folderGroup" ] [ "folderGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "folderGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+folderGroup : RVFolderGroup (1)
+{
+    ui
+    {
+        string name = "Folder of FolderSrc1 and FolderSrc2"
+    }
+
+    mode
+    {
+        string viewType = "switch"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+folderGroup_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "FolderSrc1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "FolderSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/panel_after.png
new file mode 100644
index 000000000..e84e2b9c9
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/panel_before.png
new file mode 100644
index 000000000..c2cf0ca82
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/session.rv
new file mode 100644
index 000000000..868256458
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_bars/session.rv
@@ -0,0 +1,1465 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000001"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000001" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Base"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SMPTEBars"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/panel_after.png
new file mode 100644
index 000000000..9ecae0d5a
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/panel_before.png
new file mode 100644
index 000000000..c2cf0ca82
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/session.rv
new file mode 100644
index 000000000..8394675b2
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_black/session.rv
@@ -0,0 +1,1465 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000001"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000001" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Base"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Black"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/panel.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/panel.png
new file mode 100644
index 000000000..fcad44101
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/session.rv
new file mode 100644
index 000000000..90585c822
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_blank/session.rv
@@ -0,0 +1,904 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Blank"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "blank,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/panel_after.png
new file mode 100644
index 000000000..831ceb935
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/panel_before.png
new file mode 100644
index 000000000..c2cf0ca82
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/session.rv
new file mode 100644
index 000000000..9f46957fe
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_colorchart/session.rv
@@ -0,0 +1,2002 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000001"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000001" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Base"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SRGBColorChart"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "srgbcolorchart,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "ACESColorChart"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "acescolorchart,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/panel_after.png
new file mode 100644
index 000000000..3d20e931f
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/panel_before.png
new file mode 100644
index 000000000..c2cf0ca82
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/session.rv
new file mode 100644
index 000000000..bd8195ae0
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_movieproc_solid/session.rv
@@ -0,0 +1,1465 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000001"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000001" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Base"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SolidColor"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=0.502,green=0.502,blue=0.502.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_node_types/panel.png b/src/test/golden/session_manager/golden-mac/sm_add_node_types/panel.png
new file mode 100644
index 000000000..56c036f0c
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_node_types/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_node_types/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_node_types/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_node_types/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_node_types/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_node_types/session.rv
new file mode 100644
index 000000000..b959ef41f
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_node_types/session.rv
@@ -0,0 +1,1710 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int OTHER = 1
+    }
+
+    session
+    {
+        string viewNode = "color"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "color" ] [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "layoutGroup" ] [ "sourceGroup000000" "retimeGroup" ] [ "color" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "color" "defaultLayout" "defaultSequence" "defaultStack" "layoutGroup" "retimeGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+color : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+
+    ui
+    {
+        string name = "Color of NtSrc1"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+layoutGroup : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Layout of NtSrc1"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+layoutGroup_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+layoutGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+layoutGroup_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+layoutGroup_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+retimeGroup : RVRetimeGroup (1)
+{
+    ui
+    {
+        string name = "Retime of NtSrc1"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+retimeGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+retimeGroup_retime : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "NtSrc1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "NtSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_sequence/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_add_sequence/panel_after.png
new file mode 100644
index 000000000..08a4b7f99
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_sequence/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_sequence/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_add_sequence/panel_before.png
new file mode 100644
index 000000000..08e8c0a63
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_sequence/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_sequence/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_sequence/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_sequence/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_sequence/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_sequence/session.rv
new file mode 100644
index 000000000..3c5d4ce0b
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_sequence/session.rv
@@ -0,0 +1,1623 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sequenceGroup"
+        int[2] range = [ [ 1 49 ] ]
+        int[2] region = [ [ 1 49 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sequenceGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Sequence of SeqSrc1 and SeqSrc2"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SeqSrc1"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SeqSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_stack/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_add_stack/panel_after.png
new file mode 100644
index 000000000..8a989bcba
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_stack/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_stack/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_add_stack/panel_before.png
new file mode 100644
index 000000000..03e78b7c4
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_stack/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_stack/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_stack/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_stack/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_stack/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_stack/session.rv
new file mode 100644
index 000000000..a06ed665c
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_stack/session.rv
@@ -0,0 +1,1630 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "stackGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "stackGroup" ] [ "sourceGroup000001" "stackGroup" ] [ "stackGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "stackGroup" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "StkSrc1"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "StkSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+stackGroup : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Stack of StkSrc1 and StkSrc2"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+stackGroup_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+stackGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+stackGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+stackGroup_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+stackGroup_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+stackGroup_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_switch/panel.png b/src/test/golden/session_manager/golden-mac/sm_add_switch/panel.png
new file mode 100644
index 000000000..aa3bae3ce
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_add_switch/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_switch/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_add_switch/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_switch/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_add_switch/session.rv b/src/test/golden/session_manager/golden-mac/sm_add_switch/session.rv
new file mode 100644
index 000000000..e7c81c205
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_add_switch/session.rv
@@ -0,0 +1,1488 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int OTHER = 1
+    }
+
+    session
+    {
+        string viewNode = "switchGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "switchGroup" ] [ "sourceGroup000001" "switchGroup" ] [ "switchGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "switchGroup" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SwSrc1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SwSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+switchGroup : RVSwitchGroup (1)
+{
+    ui
+    {
+        string name = "Switch of SwSrc1 and SwSrc2"
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+switchGroup_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_folder/panel.png b/src/test/golden/session_manager/golden-mac/sm_delete_folder/panel.png
new file mode 100644
index 000000000..2dac430d8
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_delete_folder/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_folder/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_delete_folder/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_folder/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_folder/session.rv b/src/test/golden/session_manager/golden-mac/sm_delete_folder/session.rv
new file mode 100644
index 000000000..20dd6acc6
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_folder/session.rv
@@ -0,0 +1,922 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int FOLDERS = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "FolderChild"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/panel.png b/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/panel.png
new file mode 100644
index 000000000..df4769910
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/session.rv b/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/session.rv
new file mode 100644
index 000000000..7c7fe96e2
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_in_folder/session.rv
@@ -0,0 +1,1048 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int FOLDERS = 1
+    }
+
+    session
+    {
+        string viewNode = "folderGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "folderGroup000002" ] [ "folderGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "folderGroup" "folderGroup000002" "sequenceGroup" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+folderGroup : RVFolderGroup (1)
+{
+    ui
+    {
+        string name = "DfFolderA"
+    }
+
+    mode
+    {
+        string viewType = "switch"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        string expandState = ""
+    }
+}
+
+folderGroup000002 : RVFolderGroup (1)
+{
+    ui
+    {
+        string name = "DfFolderB"
+    }
+
+    mode
+    {
+        string viewType = "switch"
+    }
+}
+
+folderGroup000002_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+folderGroup_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "DfSequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "DfShared"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_multi/panel.png b/src/test/golden/session_manager/golden-mac/sm_delete_multi/panel.png
new file mode 100644
index 000000000..dc941c3f9
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_delete_multi/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_multi/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_delete_multi/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_multi/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_multi/session.rv b/src/test/golden/session_manager/golden-mac/sm_delete_multi/session.rv
new file mode 100644
index 000000000..1f993f842
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_multi/session.rv
@@ -0,0 +1,904 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000002" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000002" "defaultStack" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000002" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "DmSrc2"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_source/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_delete_source/panel_after.png
new file mode 100644
index 000000000..57ae8d097
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_delete_source/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_source/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_delete_source/panel_before.png
new file mode 100644
index 000000000..f4f92d903
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_delete_source/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_source/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_delete_source/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_source/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_delete_source/session.rv b/src/test/golden/session_manager/golden-mac/sm_delete_source/session.rv
new file mode 100644
index 000000000..3107f0175
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_delete_source/session.rv
@@ -0,0 +1,921 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Keeper"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/panel_sequence.png b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/panel_sequence.png
new file mode 100644
index 000000000..856e5513d
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/panel_sequence.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/panel_source.png b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/panel_source.png
new file mode 100644
index 000000000..b3226d61d
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/panel_source.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/session.rv b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/session.rv
new file mode 100644
index 000000000..09efde312
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_editor_tab_per_type/session.rv
@@ -0,0 +1,1800 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "stackGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sourceGroup000000" "stackGroup" ] [ "sourceGroup000001" "stackGroup" ] [ "stackGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" "stackGroup" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "J4Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "J4Src1"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "J4Src2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+stackGroup : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "J4Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+stackGroup_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+stackGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+stackGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+stackGroup_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+stackGroup_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+stackGroup_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/panel.png b/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/panel.png
new file mode 100644
index 000000000..f71b049fc
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/session.rv b/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/session.rv
new file mode 100644
index 000000000..13f59d401
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_folder_from_copy/session.rv
@@ -0,0 +1,1655 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int FOLDERS = 1
+    }
+
+    session
+    {
+        string viewNode = "Folder"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "Folder" ] [ "sourceGroup000001" "Folder" ] [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "Folder" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "Folder" "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+Folder : RVFolderGroup (1)
+{
+    ui
+    {
+        string name = "Folder of FcSrc1 and FcSrc2"
+    }
+
+    mode
+    {
+        string viewType = "switch"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+Folder_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "FcSequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "FcSrc1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "FcSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/panel_fallback.png b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/panel_fallback.png
new file mode 100644
index 000000000..11f517cb5
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/panel_fallback.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/panel_thumbnails.png b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/panel_thumbnails.png
new file mode 100644
index 000000000..7bffcccc6
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/panel_thumbnails.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/session.rv b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/session.rv
new file mode 100644
index 000000000..ec1c6a051
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails/session.rv
@@ -0,0 +1,6828 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 216000 216060 ] ]
+        int[2] region = [ [ 216000 216060 ] ]
+        float fps = 30
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 216000
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "sourceGroup000003" "defaultLayout" ] [ "sourceGroup000004" "defaultLayout" ] [ "sourceGroup000005" "defaultLayout" ] [ "sourceGroup000006" "defaultLayout" ] [ "sourceGroup000007" "defaultLayout" ] [ "sourceGroup000008" "defaultLayout" ] [ "sourceGroup000009" "defaultLayout" ] [ "sourceGroup000010" "defaultLayout" ] [ "sourceGroup000011" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000003" "defaultSequence" ] [ "sourceGroup000004" "defaultSequence" ] [ "sourceGroup000005" "defaultSequence" ] [ "sourceGroup000006" "defaultSequence" ] [ "sourceGroup000007" "defaultSequence" ] [ "sourceGroup000008" "defaultSequence" ] [ "sourceGroup000009" "defaultSequence" ] [ "sourceGroup000010" "defaultSequence" ] [ "sourceGroup000011" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000003" "defaultStack" ] [ "sourceGroup000004" "defaultStack" ] [ "sourceGroup000005" "defaultStack" ] [ "sourceGroup000006" "defaultStack" ] [ "sourceGroup000007" "defaultStack" ] [ "sourceGroup000008" "defaultStack" ] [ "sourceGroup000009" "defaultStack" ] [ "sourceGroup000010" "defaultStack" ] [ "sourceGroup000011" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" "sourceGroup000003" "sourceGroup000004" "sourceGroup000005" "sourceGroup000006" "sourceGroup000007" "sourceGroup000008" "sourceGroup000009" "sourceGroup000010" "sourceGroup000011" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000004 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000005 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000006 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000007 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000008 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000009 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000010 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000011 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.666666687 0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.222222239 0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.222222209 0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000003 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.666666687 0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000004 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.666666687 0 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000005 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.222222239 0 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000006 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.222222209 0 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000007 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.666666687 0 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000008 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.666666687 -0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000009 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.222222239 -0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000010 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.222222209 -0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000011 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.666666687 -0.25 ] ]
+        float[2] scale = [ [ 0.25 0.25 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 30
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000003 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000004 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000005 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000006 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000007 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000008 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000009 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000010 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000011 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000004 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000005 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000006 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000007 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000008 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000009 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000010 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000011 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 3 4 5 6 7 8 9 10 11 0 ]
+        int frame = [ 1 61 312 553 787 939 1054 1208 1385 1783 2165 2711 2916 ]
+        int in = [ 216000 216060 216311 216552 216786 216938 217053 217207 217384 217782 218164 218710 0 ]
+        int out = [ 216059 216310 216551 216785 216937 217052 217206 217383 217781 218163 218709 218914 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 30
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000004 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000005 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000000_source : RVFileSource (1)
+{
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+    {
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+
+    media
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+        string name = [ ]
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+
+    group
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+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
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+
+    cut
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+        int out = 2147483647
+    }
+
+    proxy
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
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+        float relativeOffset = 0
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+
+    rightTransform
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+}
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+    {
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+}
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+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
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+        float conditioningGamma = 1
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+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
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+        int logtype = 0
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+
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+}
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+    warp
+    {
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+        float k3 = 0
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+        string type = "Luminance"
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+        int size = [ 0 0 0 ]
+        int active = 0
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+        int active = 1
+        int unpremult = 0
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+    CDL
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+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
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+
+    luminanceLUT
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+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
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+
+    "luminanceLUT:output"
+    {
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+}
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+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
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+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
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+
+    color
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+        int allowFloatingPoint = 1
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+
+    crop
+    {
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
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+
+    uncrop
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+        int width = 0
+        int height = 0
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+        int y = 0
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+}
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+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
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+}
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+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+}
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+sourceGroup000001_overlay : RVOverlay (1)
+{
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+}
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+{
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+        int nextAnnotationId = 0
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+        string include = [ ]
+    }
+}
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+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
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+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
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+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0002.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
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+        int out = 2147483647
+    }
+
+    proxy
+    {
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
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+        float relativeOffset = 0
+        float rightOffset = 0
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+
+    rightTransform
+    {
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+}
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+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
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+}
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+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
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+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
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+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
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+        int blackCodeValue = 0
+        int breakPointValue = 0
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+
+    CDL
+    {
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+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
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+}
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+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
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+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
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+        float p1 = 0
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+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
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+        float cropRatioY = 1
+        float cx02 = 0
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+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
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+}
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+sourceGroup000001_transform2D : RVTransform2D (1)
+{
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+    {
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+        int active = 1
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+
+    stencil
+    {
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+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
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+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
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+}
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+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
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+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
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+    {
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+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
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+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
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+sourceGroup000002_channelMap : RVChannelMap (1)
+{
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+    {
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+}
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+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
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+    {
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+}
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+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
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+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
+    {
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+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
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+        float hue = 0
+        int active = 1
+        int unpremult = 0
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+
+    CDL
+    {
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+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
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+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
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+
+    color
+    {
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+        int allowFloatingPoint = 1
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+
+    crop
+    {
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
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+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
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+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
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+    {
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+}
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+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
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+    {
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+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
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+        int nextTextId = 0
+        int show = 1
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+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
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+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
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+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0003.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
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+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
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+
+    cut
+    {
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+        int out = 2147483647
+    }
+
+    proxy
+    {
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
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+        float relativeOffset = 0
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+
+    rightTransform
+    {
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+        int flop = 0
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+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
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+}
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+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
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+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+
+    color
+    {
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+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
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+
+    CDL
+    {
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+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
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+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
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+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
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+}
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+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
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+}
+
+sourceGroup000003 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0004.mp4"
+    }
+}
+
+sourceGroup000003_cache : RVCache (1)
+{
+    render
+    {
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+}
+
+sourceGroup000003_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000003_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000003_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
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+}
+
+sourceGroup000003_colorPipeline_0 : RVColor (2)
+{
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+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000003_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000003_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
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+}
+
+sourceGroup000003_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000003_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
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+}
+
+sourceGroup000003_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000003_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0004.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216552 216786 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000003_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000003_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000003_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000003_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000003_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000004 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 218710 218915 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000011_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000011_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000011_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000011_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000011_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/panel_fallback.png b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/panel_fallback.png
new file mode 100644
index 000000000..eb98a6add
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/panel_fallback.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/panel_thumbnails.png b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/panel_thumbnails.png
new file mode 100644
index 000000000..080a6569e
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/panel_thumbnails.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/session.rv b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/session.rv
new file mode 100644
index 000000000..ca551b9f2
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_folder_thumbnails_all/session.rv
@@ -0,0 +1,44955 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 216000 216060 ] ]
+        int[2] region = [ [ 216000 216060 ] ]
+        float fps = 30
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 216000
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "sourceGroup000003" "defaultLayout" ] [ "sourceGroup000004" "defaultLayout" ] [ "sourceGroup000005" "defaultLayout" ] [ "sourceGroup000006" "defaultLayout" ] [ "sourceGroup000007" "defaultLayout" ] [ "sourceGroup000008" "defaultLayout" ] [ "sourceGroup000009" "defaultLayout" ] [ "sourceGroup000010" "defaultLayout" ] [ "sourceGroup000011" "defaultLayout" ] [ "sourceGroup000012" "defaultLayout" ] [ "sourceGroup000013" "defaultLayout" ] [ "sourceGroup000014" "defaultLayout" ] [ "sourceGroup000015" "defaultLayout" ] [ "sourceGroup000016" "defaultLayout" ] [ "sourceGroup000017" "defaultLayout" ] [ "sourceGroup000018" "defaultLayout" ] [ "sourceGroup000019" "defaultLayout" ] [ "sourceGroup000020" "defaultLayout" ] [ "sourceGroup000021" "defaultLayout" ] [ "sourceGroup000022" "defaultLayout" ] [ "sourceGroup000023" "defaultLayout" ] [ "sourceGroup000024" "defaultLayout" ] [ "sourceGroup000025" "defaultLayout" ] [ "sourceGroup000026" "defaultLayout" ] [ "sourceGroup000027" "defaultLayout" ] [ "sourceGroup000028" "defaultLayout" ] [ "sourceGroup000029" "defaultLayout" ] [ "sourceGroup000030" "defaultLayout" ] [ "sourceGroup000031" "defaultLayout" ] [ "sourceGroup000032" "defaultLayout" ] [ "sourceGroup000033" "defaultLayout" ] [ "sourceGroup000034" "defaultLayout" ] [ "sourceGroup000035" "defaultLayout" ] [ "sourceGroup000036" "defaultLayout" ] [ "sourceGroup000037" "defaultLayout" ] [ "sourceGroup000038" "defaultLayout" ] [ "sourceGroup000039" "defaultLayout" ] [ "sourceGroup000040" "defaultLayout" ] [ "sourceGroup000041" "defaultLayout" ] [ "sourceGroup000042" "defaultLayout" ] [ "sourceGroup000043" "defaultLayout" ] [ "sourceGroup000044" "defaultLayout" ] [ "sourceGroup000045" "defaultLayout" ] [ "sourceGroup000046" "defaultLayout" ] [ "sourceGroup000047" "defaultLayout" ] [ "sourceGroup000048" "defaultLayout" ] [ "sourceGroup000049" "defaultLayout" ] [ "sourceGroup000050" "defaultLayout" ] [ "sourceGroup000051" "defaultLayout" ] [ "sourceGroup000052" "defaultLayout" ] [ "sourceGroup000053" "defaultLayout" ] [ "sourceGroup000054" "defaultLayout" ] [ "sourceGroup000055" "defaultLayout" ] [ "sourceGroup000056" "defaultLayout" ] [ "sourceGroup000057" "defaultLayout" ] [ "sourceGroup000058" "defaultLayout" ] [ "sourceGroup000059" "defaultLayout" ] [ "sourceGroup000060" "defaultLayout" ] [ "sourceGroup000061" "defaultLayout" ] [ "sourceGroup000062" "defaultLayout" ] [ "sourceGroup000063" "defaultLayout" ] [ "sourceGroup000064" "defaultLayout" ] [ "sourceGroup000065" "defaultLayout" ] [ "sourceGroup000066" "defaultLayout" ] [ "sourceGroup000067" "defaultLayout" ] [ "sourceGroup000068" "defaultLayout" ] [ "sourceGroup000069" "defaultLayout" ] [ "sourceGroup000070" "defaultLayout" ] [ "sourceGroup000071" "defaultLayout" ] [ "sourceGroup000072" "defaultLayout" ] [ "sourceGroup000073" "defaultLayout" ] [ "sourceGroup000074" "defaultLayout" ] [ "sourceGroup000075" "defaultLayout" ] [ "sourceGroup000076" "defaultLayout" ] [ "sourceGroup000077" "defaultLayout" ] [ "sourceGroup000078" "defaultLayout" ] [ "sourceGroup000079" "defaultLayout" ] [ "sourceGroup000080" "defaultLayout" ] [ "sourceGroup000081" "defaultLayout" ] [ "sourceGroup000082" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000003" "defaultSequence" ] [ "sourceGroup000004" "defaultSequence" ] [ "sourceGroup000005" "defaultSequence" ] [ "sourceGroup000006" "defaultSequence" ] [ "sourceGroup000007" "defaultSequence" ] [ "sourceGroup000008" "defaultSequence" ] [ "sourceGroup000009" "defaultSequence" ] [ "sourceGroup000010" "defaultSequence" ] [ "sourceGroup000011" "defaultSequence" ] [ "sourceGroup000012" "defaultSequence" ] [ "sourceGroup000013" "defaultSequence" ] [ "sourceGroup000014" "defaultSequence" ] [ "sourceGroup000015" "defaultSequence" ] [ "sourceGroup000016" "defaultSequence" ] [ "sourceGroup000017" "defaultSequence" ] [ "sourceGroup000018" "defaultSequence" ] [ "sourceGroup000019" "defaultSequence" ] [ "sourceGroup000020" "defaultSequence" ] [ "sourceGroup000021" "defaultSequence" ] [ "sourceGroup000022" "defaultSequence" ] [ "sourceGroup000023" "defaultSequence" ] [ "sourceGroup000024" "defaultSequence" ] [ "sourceGroup000025" "defaultSequence" ] [ "sourceGroup000026" "defaultSequence" ] [ "sourceGroup000027" "defaultSequence" ] [ "sourceGroup000028" "defaultSequence" ] [ "sourceGroup000029" "defaultSequence" ] [ "sourceGroup000030" "defaultSequence" ] [ "sourceGroup000031" "defaultSequence" ] [ "sourceGroup000032" "defaultSequence" ] [ "sourceGroup000033" "defaultSequence" ] [ "sourceGroup000034" "defaultSequence" ] [ "sourceGroup000035" "defaultSequence" ] [ "sourceGroup000036" "defaultSequence" ] [ "sourceGroup000037" "defaultSequence" ] [ "sourceGroup000038" "defaultSequence" ] [ "sourceGroup000039" "defaultSequence" ] [ "sourceGroup000040" "defaultSequence" ] [ "sourceGroup000041" "defaultSequence" ] [ "sourceGroup000042" "defaultSequence" ] [ "sourceGroup000043" "defaultSequence" ] [ "sourceGroup000044" "defaultSequence" ] [ "sourceGroup000045" "defaultSequence" ] [ "sourceGroup000046" "defaultSequence" ] [ "sourceGroup000047" "defaultSequence" ] [ "sourceGroup000048" "defaultSequence" ] [ "sourceGroup000049" "defaultSequence" ] [ "sourceGroup000050" "defaultSequence" ] [ "sourceGroup000051" "defaultSequence" ] [ "sourceGroup000052" "defaultSequence" ] [ "sourceGroup000053" "defaultSequence" ] [ "sourceGroup000054" "defaultSequence" ] [ "sourceGroup000055" "defaultSequence" ] [ "sourceGroup000056" "defaultSequence" ] [ "sourceGroup000057" "defaultSequence" ] [ "sourceGroup000058" "defaultSequence" ] [ "sourceGroup000059" "defaultSequence" ] [ "sourceGroup000060" "defaultSequence" ] [ "sourceGroup000061" "defaultSequence" ] [ "sourceGroup000062" "defaultSequence" ] [ "sourceGroup000063" "defaultSequence" ] [ "sourceGroup000064" "defaultSequence" ] [ "sourceGroup000065" "defaultSequence" ] [ "sourceGroup000066" "defaultSequence" ] [ "sourceGroup000067" "defaultSequence" ] [ "sourceGroup000068" "defaultSequence" ] [ "sourceGroup000069" "defaultSequence" ] [ "sourceGroup000070" "defaultSequence" ] [ "sourceGroup000071" "defaultSequence" ] [ "sourceGroup000072" "defaultSequence" ] [ "sourceGroup000073" "defaultSequence" ] [ "sourceGroup000074" "defaultSequence" ] [ "sourceGroup000075" "defaultSequence" ] [ "sourceGroup000076" "defaultSequence" ] [ "sourceGroup000077" "defaultSequence" ] [ "sourceGroup000078" "defaultSequence" ] [ "sourceGroup000079" "defaultSequence" ] [ "sourceGroup000080" "defaultSequence" ] [ "sourceGroup000081" "defaultSequence" ] [ "sourceGroup000082" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000003" "defaultStack" ] [ "sourceGroup000004" "defaultStack" ] [ "sourceGroup000005" "defaultStack" ] [ "sourceGroup000006" "defaultStack" ] [ "sourceGroup000007" "defaultStack" ] [ "sourceGroup000008" "defaultStack" ] [ "sourceGroup000009" "defaultStack" ] [ "sourceGroup000010" "defaultStack" ] [ "sourceGroup000011" "defaultStack" ] [ "sourceGroup000012" "defaultStack" ] [ "sourceGroup000013" "defaultStack" ] [ "sourceGroup000014" "defaultStack" ] [ "sourceGroup000015" "defaultStack" ] [ "sourceGroup000016" "defaultStack" ] [ "sourceGroup000017" "defaultStack" ] [ "sourceGroup000018" "defaultStack" ] [ "sourceGroup000019" "defaultStack" ] [ "sourceGroup000020" "defaultStack" ] [ "sourceGroup000021" "defaultStack" ] [ "sourceGroup000022" "defaultStack" ] [ "sourceGroup000023" "defaultStack" ] [ "sourceGroup000024" "defaultStack" ] [ "sourceGroup000025" "defaultStack" ] [ "sourceGroup000026" "defaultStack" ] [ "sourceGroup000027" "defaultStack" ] [ "sourceGroup000028" "defaultStack" ] [ "sourceGroup000029" "defaultStack" ] [ "sourceGroup000030" "defaultStack" ] [ "sourceGroup000031" "defaultStack" ] [ "sourceGroup000032" "defaultStack" ] [ "sourceGroup000033" "defaultStack" ] [ "sourceGroup000034" "defaultStack" ] [ "sourceGroup000035" "defaultStack" ] [ "sourceGroup000036" "defaultStack" ] [ "sourceGroup000037" "defaultStack" ] [ "sourceGroup000038" "defaultStack" ] [ "sourceGroup000039" "defaultStack" ] [ "sourceGroup000040" "defaultStack" ] [ "sourceGroup000041" "defaultStack" ] [ "sourceGroup000042" "defaultStack" ] [ "sourceGroup000043" "defaultStack" ] [ "sourceGroup000044" "defaultStack" ] [ "sourceGroup000045" "defaultStack" ] [ "sourceGroup000046" "defaultStack" ] [ "sourceGroup000047" "defaultStack" ] [ "sourceGroup000048" "defaultStack" ] [ "sourceGroup000049" "defaultStack" ] [ "sourceGroup000050" "defaultStack" ] [ "sourceGroup000051" "defaultStack" ] [ "sourceGroup000052" "defaultStack" ] [ "sourceGroup000053" "defaultStack" ] [ "sourceGroup000054" "defaultStack" ] [ "sourceGroup000055" "defaultStack" ] [ "sourceGroup000056" "defaultStack" ] [ "sourceGroup000057" "defaultStack" ] [ "sourceGroup000058" "defaultStack" ] [ "sourceGroup000059" "defaultStack" ] [ "sourceGroup000060" "defaultStack" ] [ "sourceGroup000061" "defaultStack" ] [ "sourceGroup000062" "defaultStack" ] [ "sourceGroup000063" "defaultStack" ] [ "sourceGroup000064" "defaultStack" ] [ "sourceGroup000065" "defaultStack" ] [ "sourceGroup000066" "defaultStack" ] [ "sourceGroup000067" "defaultStack" ] [ "sourceGroup000068" "defaultStack" ] [ "sourceGroup000069" "defaultStack" ] [ "sourceGroup000070" "defaultStack" ] [ "sourceGroup000071" "defaultStack" ] [ "sourceGroup000072" "defaultStack" ] [ "sourceGroup000073" "defaultStack" ] [ "sourceGroup000074" "defaultStack" ] [ "sourceGroup000075" "defaultStack" ] [ "sourceGroup000076" "defaultStack" ] [ "sourceGroup000077" "defaultStack" ] [ "sourceGroup000078" "defaultStack" ] [ "sourceGroup000079" "defaultStack" ] [ "sourceGroup000080" "defaultStack" ] [ "sourceGroup000081" "defaultStack" ] [ "sourceGroup000082" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" "sourceGroup000003" "sourceGroup000004" "sourceGroup000005" "sourceGroup000006" "sourceGroup000007" "sourceGroup000008" "sourceGroup000009" "sourceGroup000010" "sourceGroup000011" "sourceGroup000012" "sourceGroup000013" "sourceGroup000014" "sourceGroup000015" "sourceGroup000016" "sourceGroup000017" "sourceGroup000018" "sourceGroup000019" "sourceGroup000020" "sourceGroup000021" "sourceGroup000022" "sourceGroup000023" "sourceGroup000024" "sourceGroup000025" "sourceGroup000026" "sourceGroup000027" "sourceGroup000028" "sourceGroup000029" "sourceGroup000030" "sourceGroup000031" "sourceGroup000032" "sourceGroup000033" "sourceGroup000034" "sourceGroup000035" "sourceGroup000036" "sourceGroup000037" "sourceGroup000038" "sourceGroup000039" "sourceGroup000040" "sourceGroup000041" "sourceGroup000042" "sourceGroup000043" "sourceGroup000044" "sourceGroup000045" "sourceGroup000046" "sourceGroup000047" "sourceGroup000048" "sourceGroup000049" "sourceGroup000050" "sourceGroup000051" "sourceGroup000052" "sourceGroup000053" "sourceGroup000054" "sourceGroup000055" "sourceGroup000056" "sourceGroup000057" "sourceGroup000058" "sourceGroup000059" "sourceGroup000060" "sourceGroup000061" "sourceGroup000062" "sourceGroup000063" "sourceGroup000064" "sourceGroup000065" "sourceGroup000066" "sourceGroup000067" "sourceGroup000068" "sourceGroup000069" "sourceGroup000070" "sourceGroup000071" "sourceGroup000072" "sourceGroup000073" "sourceGroup000074" "sourceGroup000075" "sourceGroup000076" "sourceGroup000077" "sourceGroup000078" "sourceGroup000079" "sourceGroup000080" "sourceGroup000081" "sourceGroup000082" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000004 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000005 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000006 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000007 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
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+}
+
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+{
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+    {
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+
+    audio
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+}
+
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+{
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+
+    audio
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+
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+
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+}
+
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+}
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+{
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+
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+
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+}
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+{
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+
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+
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+}
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+{
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+
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+
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+}
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+{
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+
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+
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+}
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+{
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+
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+{
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000081 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000082 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000003 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000004 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000005 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000006 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000007 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000008 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000009 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000010 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000011 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000012 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000013 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000014 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000015 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000016 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000017 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 0.300000012 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000018 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000019 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000020 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000021 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000022 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000023 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000024 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000025 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000026 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 0.200000003 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000027 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000028 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000029 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000030 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000031 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000032 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000033 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000034 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000035 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000036 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000037 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000038 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000039 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000040 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000041 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000042 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000043 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000044 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 0 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000045 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000046 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000047 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000048 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000049 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000050 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000051 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000052 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000053 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 -0.099999994 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000054 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.711111128 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000055 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.533333361 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000056 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.355555564 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000057 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.177777767 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000058 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000059 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.177777812 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000060 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.355555683 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000061 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.53333354 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000062 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.711111426 -0.200000018 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000063 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.800000012 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000064 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.622222245 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000065 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444478 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000066 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.266666651 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000067 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.0888888836 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000068 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.0888889357 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000069 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.2666668 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000070 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444656 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000071 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.622222543 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000072 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.80000037 -0.299999982 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000073 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.800000012 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000074 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.622222245 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000075 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444478 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000076 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.266666651 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000077 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.0888888836 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000078 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.0888889357 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000079 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.2666668 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000080 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444656 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000081 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.622222543 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000082 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.80000037 -0.400000006 ] ]
+        float[2] scale = [ [ 0.100000001 0.100000001 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 30
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000003 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000004 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000005 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000006 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000007 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000008 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000009 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000010 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000011 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000012 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000013 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000014 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000015 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000016 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000017 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000018 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000019 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000020 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000021 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000022 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000023 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000024 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000025 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000026 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000027 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000028 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000029 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000030 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000031 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000032 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000033 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000034 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000035 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000036 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000037 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000038 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000039 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000040 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000041 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000042 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000043 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000044 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000045 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000046 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000047 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000048 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000049 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000050 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000051 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000052 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000053 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000054 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000055 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000056 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000057 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000058 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000059 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000060 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000061 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000062 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000063 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000064 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000065 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000066 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000067 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000068 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000069 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000070 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000071 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000072 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000073 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000074 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000075 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000076 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000077 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000078 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000079 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000080 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000081 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000082 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000004 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000005 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000006 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000007 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000008 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000009 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000010 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000011 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000012 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000013 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000014 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000015 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000016 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000017 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000018 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000019 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000020 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000021 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000022 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000023 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000024 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000025 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000026 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000027 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000028 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000029 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000030 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000031 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000032 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000033 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000034 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000035 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000036 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000037 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000038 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000039 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000040 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000041 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000042 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000043 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000044 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000045 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000046 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000047 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000048 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000049 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000050 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000051 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000052 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000053 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000054 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000055 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000056 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000057 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000058 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000059 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000060 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000061 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000062 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000063 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000064 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000065 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000066 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000067 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000068 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000069 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000070 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000071 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000072 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000073 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000074 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000075 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000076 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000077 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000078 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000079 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000080 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000081 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000082 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 0 ]
+        int frame = [ 1 61 312 553 787 939 1054 1208 1385 1783 2165 2711 2916 3296 3510 4319 4559 4816 5161 5236 5372 5988 6299 6512 6633 7138 7269 7997 8233 8465 8731 9930 10092 10527 11144 11456 11873 12265 14285 14412 15197 15353 15588 15933 16311 17667 20170 20988 21414 21648 21815 22412 23721 24059 24552 24893 26248 26870 27027 27545 27661 28006 28155 28213 28593 28895 29351 29766 30218 30667 31120 31631 31826 31911 32090 32289 32743 32907 33177 33767 34012 34208 34686 43094 ]
+        int in = [ 216000 216060 216311 216552 216786 216938 217053 217207 217384 217782 218164 218710 218915 219295 219509 220318 220558 220815 221160 221235 221371 221987 222298 222511 222632 223137 223268 223996 224232 224464 224730 225929 226091 226526 227143 227455 227872 228264 230284 230411 231196 231352 231587 231932 232310 233666 236169 236987 237413 237647 237814 238411 239720 240058 240551 240892 242247 242869 243026 243544 243660 244005 244154 244212 244592 244894 245350 245765 246217 246666 247119 247630 247825 247910 248089 248288 248742 248906 249176 249766 250011 250207 250685 0 ]
+        int out = [ 216059 216310 216551 216785 216937 217052 217206 217383 217781 218163 218709 218914 219294 219508 220317 220557 220814 221159 221234 221370 221986 222297 222510 222631 223136 223267 223995 224231 224463 224729 225928 226090 226525 227142 227454 227871 228263 230283 230410 231195 231351 231586 231931 232309 233665 236168 236986 237412 237646 237813 238410 239719 240057 240550 240891 242246 242868 243025 243543 243659 244004 244153 244211 244591 244893 245349 245764 246216 246665 247118 247629 247824 247909 248088 248287 248741 248905 249175 249765 250010 250206 250684 259092 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 30
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000004 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000005 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000006 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000007 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000008 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000009 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000010 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000011 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000012 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000013 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000014 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000015 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000016 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000017 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000018 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000019 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000020 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000021 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000022 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000023 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000024 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000025 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000026 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000027 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000028 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000029 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000030 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
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+    }
+}
+
+defaultStack_rt_sourceGroup000031 : RVRetime (1)
+{
+    visual
+    {
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+        float offset = 0
+    }
+
+    audio
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+
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+    {
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+}
+
+defaultStack_rt_sourceGroup000032 : RVRetime (1)
+{
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+    {
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+    }
+
+    audio
+    {
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+
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+}
+
+defaultStack_rt_sourceGroup000033 : RVRetime (1)
+{
+    visual
+    {
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+    }
+
+    audio
+    {
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+
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+    {
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+}
+
+defaultStack_rt_sourceGroup000034 : RVRetime (1)
+{
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+    {
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+    }
+
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+    {
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+
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+    {
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+}
+
+defaultStack_rt_sourceGroup000035 : RVRetime (1)
+{
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+    {
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+
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+    {
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+    {
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+    }
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+}
+
+defaultStack_rt_sourceGroup000036 : RVRetime (1)
+{
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+    {
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+    }
+
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+    {
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+}
+
+defaultStack_rt_sourceGroup000037 : RVRetime (1)
+{
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+    {
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+
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    {
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+}
+
+defaultStack_rt_sourceGroup000039 : RVRetime (1)
+{
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+    {
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+    }
+
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+    {
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    {
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    {
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+    }
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    {
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+}
+
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+{
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+    {
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+
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+    {
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+    {
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+}
+
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+{
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+    {
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+
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+    {
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+}
+
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+{
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+    {
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+
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+    {
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+    {
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    }
+
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+
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+
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+    {
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+    }
+
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+
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    }
+
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+    {
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+    }
+
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+        int keyFrames = [ ]
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+
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+    {
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+}
+
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+{
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+    {
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+        float offset = 0
+    }
+
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+
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+    {
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+    }
+
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+        int keyFrames = [ ]
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+
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+    {
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+}
+
+defaultStack_rt_sourceGroup000052 : RVRetime (1)
+{
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+    {
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+        float offset = 0
+    }
+
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+    {
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+    }
+
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+    {
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+    }
+
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+    {
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+        int keyFrames = [ ]
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+
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+    {
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+    }
+}
+
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+{
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+    {
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+        float offset = 0
+    }
+
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+    {
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+
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+    {
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+    }
+
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+        int keyFrames = [ ]
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+
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+
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+    {
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+    }
+
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+    {
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+
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+    {
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+}
+
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+{
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+    {
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+        float offset = 0
+    }
+
+    audio
+    {
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+    }
+
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+    {
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+    }
+
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+    {
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+        int keyFrames = [ ]
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+    }
+
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+    {
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+    }
+}
+
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+{
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+    {
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+        float offset = 0
+    }
+
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+    {
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+    }
+
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+    {
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+    }
+
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+    {
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+        int keyFrames = [ ]
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+    }
+
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+    {
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+    }
+}
+
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+{
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+    {
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+        float offset = 0
+    }
+
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+    {
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+    }
+
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+    {
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+    }
+
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+    {
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+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
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+    {
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+    }
+}
+
+defaultStack_rt_sourceGroup000058 : RVRetime (1)
+{
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+    {
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+        float offset = 0
+    }
+
+    audio
+    {
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+
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+    {
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+    }
+
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+    {
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+        int keyFrames = [ ]
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+    }
+
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+}
+
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+{
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+    {
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+        float offset = 0
+    }
+
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+    {
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+
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+    {
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+    }
+
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+
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+    {
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+    }
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+}
+
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+{
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+    {
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+    }
+
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+    {
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+
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+    {
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+}
+
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+{
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+    {
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+
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+    {
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+
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+
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+}
+
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+{
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+    {
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+
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+    {
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+
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+}
+
+defaultStack_rt_sourceGroup000064 : RVRetime (1)
+{
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+    {
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+
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+
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+}
+
+defaultStack_rt_sourceGroup000065 : RVRetime (1)
+{
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+    {
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+    }
+
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+    {
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+    {
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+
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+
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+    {
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+}
+
+defaultStack_rt_sourceGroup000066 : RVRetime (1)
+{
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+    {
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+
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+    {
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+    {
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+    }
+
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+    {
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+        int keyFrames = [ ]
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+    }
+
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+    {
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+        int firstOutputFrame = 1
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+}
+
+defaultStack_rt_sourceGroup000067 : RVRetime (1)
+{
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+    {
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+        float offset = 0
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+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000068 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000069 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000070 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000071 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000072 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000073 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000074 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000075 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000076 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000077 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000078 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000079 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000080 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000081 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000082 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000003 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000004 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000005 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000006 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000007 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000008 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000009 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000010 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000011 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000012 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000013 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000014 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000015 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000016 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000017 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000018 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000019 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000020 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000021 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000022 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000023 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000024 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000025 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000026 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000027 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000028 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000029 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000030 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000031 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
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+}
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+{
+    transform
+    {
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+        int flop = 0
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+        float[2] scale = [ [ 1 1 ] ]
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+}
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+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
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+    stencil
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+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
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+    stencil
+    {
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+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
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+    stencil
+    {
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+    }
+}
+
+defaultStack_t_sourceGroup000036 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
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+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000037 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000038 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
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+    }
+}
+
+defaultStack_t_sourceGroup000040 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000042 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000043 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000044 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000045 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000046 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000047 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000048 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000050 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+defaultStack_t_sourceGroup000051 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
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+}
+
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+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
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+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
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+    }
+}
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+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+defaultStack_t_sourceGroup000060 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+defaultStack_t_sourceGroup000072 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
+
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
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+        int flop = 0
+        float rotate = 0
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+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
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+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
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+}
+
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+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
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+
+    ui
+    {
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+    }
+
+    session
+    {
+        float fps = 30
+        int marks = [ ]
+        int frame = 216000
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
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+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
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+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
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+        float[3] power = [ [ 1 1 1 ] ]
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+    {
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+        float max = 1
+        int size = 0
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+        int active = 0
+    }
+
+    "luminanceLUT:output"
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+}
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+sourceGroup000000_format : RVFormat (1)
+{
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+    {
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+        int yfit = 0
+        int xresize = 0
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+        string resampleMethod = "area"
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+
+    color
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+
+    crop
+    {
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+        int xmin = 0
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+    uncrop
+    {
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+        int width = 0
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+}
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+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
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+    {
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+}
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+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
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+        float lut = [ ]
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+        float conditioningGamma = 1
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+        int active = 0
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+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
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+    {
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+        int show = 1
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+}
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+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
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+        int nextAnnotationId = 0
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+        string include = [ ]
+    }
+}
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+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
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+        int readAllChannels = 0
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+
+    media
+    {
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+        int active = 1
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+        string name = [ ]
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+
+    group
+    {
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+        float volume = 1
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+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
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+
+    cut
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+        int out = 2147483647
+    }
+
+    proxy
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
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+        float relativeOffset = 0
+        float rightOffset = 0
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+
+    rightTransform
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+}
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+{
+    pipeline
+    {
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+}
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+{
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+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+
+    color
+    {
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+        int logtype = 0
+        int YUV = 0
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+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
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+
+    cineon
+    {
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+        int blackCodeValue = 0
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+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
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+}
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+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
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+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
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+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
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+        float cy46 = 0
+        float cx66 = 0
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+}
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+sourceGroup000000_transform2D : RVTransform2D (1)
+{
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+
+    stencil
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+}
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+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
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+        int out = [ ]
+        float[4] color = [ ]
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+    }
+
+    ui
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+}
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+sourceGroup000001_cache : RVCache (1)
+{
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+    {
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+}
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+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
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+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
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+        string file = ""
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+        int active = 0
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+}
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+sourceGroup000001_channelMap : RVChannelMap (1)
+{
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+}
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+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
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+    {
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+}
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+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
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+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
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+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
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+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
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+        float hue = 0
+        int active = 1
+        int unpremult = 0
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+    CDL
+    {
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+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
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+        int allowFloatingPoint = 1
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+
+    crop
+    {
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
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+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
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+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
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+}
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+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
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+    {
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+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
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+        int nextTextId = 0
+        int show = 1
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+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0002.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
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+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216060 216311 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
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+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
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+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0003.mp4"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
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+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
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+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0003.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216311 216552 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
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+    warp
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+}
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+{
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+}
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+}
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+}
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+}
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+}
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+        float max = 1
+        int size = 0
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+
+    "luminanceLUT:output"
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+}
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+{
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+
+    crop
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+        int xmin = 0
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+    uncrop
+    {
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+}
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+}
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+{
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+        int active = 0
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+}
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+{
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+}
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+{
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+    }
+}
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+{
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+    {
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+
+    media
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+        string name = [ ]
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+    group
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+        float volume = 1
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+        float crossover = 0
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+
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+        int out = 2147483647
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+    proxy
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+        int inc = 1
+        float fps = 30
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+}
+
+sourceGroup000003_sourceStereo : RVSourceStereo (1)
+{
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+    rightTransform
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+}
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+}
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+{
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+        int active = 0
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+    cineon
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+}
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+{
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+    warp
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+}
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+    stencil
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+}
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+}
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+}
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+{
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+        int active = 0
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+}
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+}
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+}
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+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
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+
+    luminanceLUT
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+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
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+}
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+sourceGroup000004_format : RVFormat (1)
+{
+    geometry
+    {
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+        int yfit = 0
+        int xresize = 0
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+        float scale = 1
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+
+    color
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+        int allowFloatingPoint = 1
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+
+    crop
+    {
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
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+
+    uncrop
+    {
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+        int width = 0
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+}
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+sourceGroup000004_lookPipeline : RVLookPipelineGroup (1)
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+}
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+{
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+        float lut = [ ]
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+        float scale = 1
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+        float conditioningGamma = 1
+        string type = "Luminance"
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+        int size = [ 0 0 0 ]
+        int active = 0
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+}
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+sourceGroup000004_overlay : RVOverlay (1)
+{
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+    {
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+}
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+sourceGroup000004_paint : RVPaint (3)
+{
+    paint
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+        string exclude = [ ]
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+}
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+sourceGroup000004_source : RVFileSource (1)
+{
+    request
+    {
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+        int readAllChannels = 0
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+
+    media
+    {
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+        string name = [ ]
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+
+    group
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+        float volume = 1
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+        float crossover = 0
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+
+    cut
+    {
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+        int out = 2147483647
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+
+    proxy
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
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+}
+
+sourceGroup000004_sourceStereo : RVSourceStereo (1)
+{
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+    {
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+        float relativeOffset = 0
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+
+    rightTransform
+    {
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+}
+
+sourceGroup000004_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
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+}
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+sourceGroup000004_tolinPipeline_0 : RVLinearize (1)
+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+
+    color
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+        int logtype = 0
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+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
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+
+    cineon
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+        int blackCodeValue = 0
+        int breakPointValue = 0
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+    CDL
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+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
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+}
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+sourceGroup000004_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
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+
+    warp
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+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
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+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
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+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
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+}
+
+sourceGroup000004_transform2D : RVTransform2D (1)
+{
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+        int flop = 0
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+        int active = 1
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+
+    stencil
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+}
+
+sourceGroup000005 : RVSourceGroup (1)
+{
+    markers
+    {
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+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
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+
+    ui
+    {
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+    }
+}
+
+sourceGroup000005_cache : RVCache (1)
+{
+    render
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+}
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+sourceGroup000005_cacheLUT : RVCacheLUT (1)
+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000005_channelMap : RVChannelMap (1)
+{
+    format
+    {
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+}
+
+sourceGroup000005_colorPipeline : RVColorPipelineGroup (1)
+{
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+    {
+        string nodes = "RVColor"
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+}
+
+sourceGroup000005_colorPipeline_0 : RVColor (2)
+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
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+
+    CDL
+    {
+        int active = 0
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+{
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000006_sourceStereo : RVSourceStereo (1)
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+}
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+    cineon
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+}
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+    warp
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+}
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+}
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+}
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+}
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+}
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+}
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+        float[3] power = [ [ 1 1 1 ] ]
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+        float max = 1
+        int size = 0
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+        int active = 0
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+
+    "luminanceLUT:output"
+    {
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+}
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+sourceGroup000007_format : RVFormat (1)
+{
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+
+    color
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+
+    crop
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
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+    uncrop
+    {
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+        int width = 0
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+}
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+}
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+        float conditioningGamma = 1
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+}
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+}
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+}
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+sourceGroup000007_source : RVFileSource (1)
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+    media
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+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0008.mp4"
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+
+    group
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+
+    cut
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+    proxy
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+        int inc = 1
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+}
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+sourceGroup000007_sourceStereo : RVSourceStereo (1)
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+    rightTransform
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+}
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+sourceGroup000007_tolinPipeline : RVLinearizePipelineGroup (1)
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+}
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+        float lut = [ ]
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+        float scale = 1
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+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
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+
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+}
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+}
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+}
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+}
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+}
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+}
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+    media
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+        float max = 1
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+}
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+{
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+
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+
+    crop
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+    uncrop
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+}
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+}
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+}
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+}
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+}
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+    media
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+    cut
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+        int inc = 1
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+}
+
+sourceGroup000009_sourceStereo : RVSourceStereo (1)
+{
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+    rightTransform
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+}
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+sourceGroup000009_tolinPipeline : RVLinearizePipelineGroup (1)
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+}
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+        float lut = [ ]
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+    cineon
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+}
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+    warp
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+}
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+    stencil
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+}
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+    ui
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+}
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+}
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+sourceGroup000010_cacheLUT : RVCacheLUT (1)
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+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
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+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+}
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+sourceGroup000010_channelMap : RVChannelMap (1)
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+}
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+}
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+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+
+    color
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+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
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+        float hue = 0
+        int active = 1
+        int unpremult = 0
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+    CDL
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+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
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+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
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+
+    "luminanceLUT:output"
+    {
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+    "luminanceLUT:output"
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+}
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+sourceGroup000012_format : RVFormat (1)
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+
+    color
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+    crop
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+        int xmax = 0
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+    uncrop
+    {
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000012_source : RVFileSource (1)
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+    media
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+        string name = [ ]
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+    group
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+        float volume = 1
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+
+    cut
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+    proxy
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+        float fps = 30
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+}
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+sourceGroup000012_sourceStereo : RVSourceStereo (1)
+{
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+
+    rightTransform
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+}
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+sourceGroup000012_tolinPipeline : RVLinearizePipelineGroup (1)
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+}
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+        float conditioningGamma = 1
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+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
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+        float fileGamma = 1
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+    cineon
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+}
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+{
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+}
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+}
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+}
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+}
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+}
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+}
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+    uncrop
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+}
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+}
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+}
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+}
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+}
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+    media
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+    group
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+}
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+sourceGroup000017_sourceStereo : RVSourceStereo (1)
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+}
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+    cineon
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+}
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+    warp
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+}
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+}
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+}
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+}
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+{
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+    ui
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+}
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+}
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+}
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+}
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+{
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+}
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+        float[3] power = [ [ 1 1 1 ] ]
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+        float max = 1
+        int size = 0
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+        int active = 0
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+
+    "luminanceLUT:output"
+    {
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+}
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+sourceGroup000022_format : RVFormat (1)
+{
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+    {
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+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
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+
+    color
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+        int allowFloatingPoint = 1
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+
+    crop
+    {
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
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+    uncrop
+    {
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+        int width = 0
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+}
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+}
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+        float conditioningGamma = 1
+        string type = "Luminance"
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+}
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+sourceGroup000022_overlay : RVOverlay (1)
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+}
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+sourceGroup000022_paint : RVPaint (3)
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+        int nextAnnotationId = 0
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+        string exclude = [ ]
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+}
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+sourceGroup000022_source : RVFileSource (1)
+{
+    request
+    {
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+        int readAllChannels = 0
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+
+    media
+    {
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+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0023.mp4"
+        string name = [ ]
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+
+    group
+    {
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+        float volume = 1
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+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
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+
+    cut
+    {
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+        int out = 2147483647
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+
+    proxy
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
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+}
+
+sourceGroup000022_sourceStereo : RVSourceStereo (1)
+{
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+        float relativeOffset = 0
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+
+    rightTransform
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+}
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+sourceGroup000022_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
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+}
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+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
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+        int logtype = 0
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+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
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+
+    cineon
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+        int blackCodeValue = 0
+        int breakPointValue = 0
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+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
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+        float saturation = 1
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+}
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+sourceGroup000022_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
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+
+    warp
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+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
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+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
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+        float cx04 = 0
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+        float cy24 = 0
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000062_sourceStereo : RVSourceStereo (1)
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+        float offset = 0
+        float conditioningGamma = 1
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+        int size = [ 0 0 0 ]
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+        float[3] offset = [ [ 0 0 0 ] ]
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+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
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+        float max = 1
+        int size = 0
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+        int active = 0
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+    {
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+    uncrop
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000065_source : RVFileSource (1)
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+    media
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+    group
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+    cut
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+
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+}
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+sourceGroup000065_sourceStereo : RVSourceStereo (1)
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+    rightTransform
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+}
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+}
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+    cineon
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+}
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+{
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+    "luminanceLUT:output"
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+}
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+    uncrop
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000070_source : RVFileSource (1)
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+    group
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+}
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+sourceGroup000070_sourceStereo : RVSourceStereo (1)
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+    rightTransform
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+}
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+    color
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+    cineon
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+}
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+    warp
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+        float k3 = 0
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+}
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+}
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+}
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+}
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+    media
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+
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+}
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+{
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+    uncrop
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+}
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+}
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+}
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+sourceGroup000074_overlay : RVOverlay (1)
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+}
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+}
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+{
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+    {
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+    media
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+}
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+sourceGroup000074_sourceStereo : RVSourceStereo (1)
+{
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+    rightTransform
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+}
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+}
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+    color
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+    cineon
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+}
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+sourceGroup000074_tolinPipeline_1 : RVLensWarp (1)
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+    warp
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+}
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+sourceGroup000074_transform2D : RVTransform2D (1)
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+    stencil
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+}
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+{
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+    {
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+        float[4] color = [ ]
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+
+    ui
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+}
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+sourceGroup000075_cache : RVCache (1)
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+}
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+sourceGroup000075_cacheLUT : RVCacheLUT (1)
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+        int active = 0
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+}
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+sourceGroup000075_channelMap : RVChannelMap (1)
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+}
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+}
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+        float lut = [ ]
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+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+    color
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+        float[3] offset = [ [ 0 0 0 ] ]
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+        int active = 1
+        int unpremult = 0
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+    CDL
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+        string colorspace = "rec709"
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+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
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+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
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+}
+
+sourceGroup000075_format : RVFormat (1)
+{
+    geometry
+    {
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+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
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+        int allowFloatingPoint = 1
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+
+    crop
+    {
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+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
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+
+    uncrop
+    {
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+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
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+}
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+sourceGroup000075_lookPipeline : RVLookPipelineGroup (1)
+{
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+}
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+{
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+        float scale = 1
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+        float conditioningGamma = 1
+        string type = "Luminance"
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+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+}
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+sourceGroup000075_overlay : RVOverlay (1)
+{
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+        int nextTextId = 0
+        int show = 1
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+}
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+sourceGroup000075_paint : RVPaint (3)
+{
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+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
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+}
+
+sourceGroup000075_source : RVFileSource (1)
+{
+    request
+    {
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+        int readAllChannels = 0
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+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0076.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
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+        float volume = 1
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+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
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+
+    cut
+    {
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+        int out = 2147483647
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+
+    proxy
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+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
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+}
+
+sourceGroup000075_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
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+        float relativeOffset = 0
+        float rightOffset = 0
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+
+    rightTransform
+    {
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+        int flop = 0
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+        float[2] translate = [ [ 0 0 ] ]
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+}
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+sourceGroup000075_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
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+}
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+sourceGroup000075_tolinPipeline_0 : RVLinearize (1)
+{
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+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
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+
+    color
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+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
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+
+    cineon
+    {
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+        int blackCodeValue = 0
+        int breakPointValue = 0
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+    CDL
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+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
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+}
+
+sourceGroup000075_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
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+
+    warp
+    {
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+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
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+        float cx24 = 0
+        float cy24 = 0
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+        float cy26 = 0
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+sourceGroup000080_sourceStereo : RVSourceStereo (1)
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+}
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+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000081 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0082.mp4"
+    }
+}
+
+sourceGroup000081_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000081_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000081_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000081_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000081_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000081_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000081_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000081_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000081_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000081_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000081_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0082.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 250207 250685 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000081_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000081_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000081_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000081_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000081_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000082 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0083.mp4"
+    }
+}
+
+sourceGroup000082_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000082_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000082_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000082_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000082_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000082_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000082_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000082_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000082_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000082_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000082_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0083.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 250685 259093 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000082_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000082_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000082_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000082_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000082_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_delete/panel.png b/src/test/golden/session_manager/golden-mac/sm_inputs_delete/panel.png
new file mode 100644
index 000000000..a26dcba5d
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_delete/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_delete/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_inputs_delete/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_delete/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_delete/session.rv b/src/test/golden/session_manager/golden-mac/sm_inputs_delete/session.rv
new file mode 100644
index 000000000..ac4b50804
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_delete/session.rv
@@ -0,0 +1,1564 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sequenceGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sequenceGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "InputDelSeq"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Keep"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Remove"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/panel_sequence.png b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/panel_sequence.png
new file mode 100644
index 000000000..0ea066c54
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/panel_sequence.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/panel_source.png b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/panel_source.png
new file mode 100644
index 000000000..3e1700bef
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/panel_source.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/session.rv b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/session.rv
new file mode 100644
index 000000000..ce199da1d
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_disabled_for_source/session.rv
@@ -0,0 +1,1628 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "IdSequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "IdSrc1"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "IdSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/panel_previews_on.png b/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/panel_previews_on.png
new file mode 100644
index 000000000..8ce36d7a7
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/panel_previews_on.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/session.rv b/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/session.rv
new file mode 100644
index 000000000..4d7d1fb46
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_preview_widget/session.rv
@@ -0,0 +1,1611 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sequenceGroup"
+        int[2] range = [ [ 1 49 ] ]
+        int[2] region = [ [ 1 49 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sequenceGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "G2Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "G2Src1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "G2Src2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_after.png
new file mode 100644
index 000000000..d82194dc4
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_before.png
new file mode 100644
index 000000000..49467707d
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_restored.png b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_restored.png
new file mode 100644
index 000000000..11c335384
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/panel_restored.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/session.rv b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/session.rv
new file mode 100644
index 000000000..dc4aba4de
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_reorder/session.rv
@@ -0,0 +1,2195 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sequenceGroup"
+        int[2] range = [ [ 1 73 ] ]
+        int[2] region = [ [ 1 73 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sourceGroup000002" "sequenceGroup" ] [ "sequenceGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "ReorderSeq"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Input1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Input2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Input3"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_asc.png b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_asc.png
new file mode 100644
index 000000000..efc3ac000
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_asc.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_before.png
new file mode 100644
index 000000000..1f865c30b
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_desc.png b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_desc.png
new file mode 100644
index 000000000..7fca82a1c
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/panel_desc.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_sort/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_inputs_sort/session.rv b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/session.rv
new file mode 100644
index 000000000..abc77cba6
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_inputs_sort/session.rv
@@ -0,0 +1,2195 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sequenceGroup"
+        int[2] range = [ [ 1 73 ] ]
+        int[2] region = [ [ 1 73 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000002" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sequenceGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "SortSeq"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Charlie"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Alpha"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Bravo"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_media_add_sources/panel.png b/src/test/golden/session_manager/golden-mac/sm_media_add_sources/panel.png
new file mode 100644
index 000000000..ff08e618b
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_media_add_sources/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_media_add_sources/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_media_add_sources/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_media_add_sources/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_media_add_sources/session.rv b/src/test/golden/session_manager/golden-mac/sm_media_add_sources/session.rv
new file mode 100644
index 000000000..65d61e668
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_media_add_sources/session.rv
@@ -0,0 +1,2532 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "sourceGroup000003" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000003" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000003" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" "sourceGroup000003" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000003 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000003 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 3 0 ]
+        int frame = [ 1 25 49 73 121 ]
+        int in = [ 1 1 1 216000 0 ]
+        int out = [ 24 24 24 216047 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000003 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000003 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Black"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SMPTEBars"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "White"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000003 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0001.mp4"
+    }
+}
+
+sourceGroup000003_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000003_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000003_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000003_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000003_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000003_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000003_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000003_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000003_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000003_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000003_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0001.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216000 216060 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000003_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000003_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000003_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000003_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000003_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/panel.png b/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/panel.png
new file mode 100644
index 000000000..f67b1be20
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/session.rv b/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/session.rv
new file mode 100644
index 000000000..507bb574b
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_meridian_mp4_load/session.rv
@@ -0,0 +1,921 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 216000 216060 ] ]
+        int[2] region = [ [ 216000 216060 ] ]
+        float fps = 30
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 216000
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 30
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 61 ]
+        int in = [ 216000 0 ]
+        int out = [ 216059 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 30
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0001.mp4"
+    }
+
+    session
+    {
+        float fps = 30
+        int marks = [ ]
+        int frame = 216000
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0001.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216000 216060 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_mp4_all/panel.png b/src/test/golden/session_manager/golden-mac/sm_mp4_all/panel.png
new file mode 100644
index 000000000..f67b1be20
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_mp4_all/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_mp4_all/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_mp4_all/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_mp4_all/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_mp4_all/session.rv b/src/test/golden/session_manager/golden-mac/sm_mp4_all/session.rv
new file mode 100644
index 000000000..507bb574b
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_mp4_all/session.rv
@@ -0,0 +1,921 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 216000 216060 ] ]
+        int[2] region = [ [ 216000 216060 ] ]
+        float fps = 30
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 216000
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 30
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 61 ]
+        int in = [ 216000 0 ]
+        int out = [ 216059 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 30
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0001.mp4"
+    }
+
+    session
+    {
+        float fps = 30
+        int marks = [ ]
+        int frame = 216000
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0001.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216000 216060 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/nav.png b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/nav.png
new file mode 100644
index 000000000..4e1f6d372
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/nav.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/panel.png b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/panel.png
new file mode 100644
index 000000000..1d8e3df66
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/session.rv b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/session.rv
new file mode 100644
index 000000000..3ff52d09f
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_nav_prev_next/session.rv
@@ -0,0 +1,2019 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "NavA"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "NavB"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "NavC"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_previews_toggle/panel_previews_off.png b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/panel_previews_off.png
new file mode 100644
index 000000000..72556de80
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/panel_previews_off.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_previews_toggle/panel_previews_on.png b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/panel_previews_on.png
new file mode 100644
index 000000000..9293a3123
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/panel_previews_on.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_previews_toggle/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_previews_toggle/session.rv b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/session.rv
new file mode 100644
index 000000000..831a1ef8c
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_previews_toggle/session.rv
@@ -0,0 +1,921 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Black"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_rename_inline/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_rename_inline/panel_after.png
new file mode 100644
index 000000000..699ed080f
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_rename_inline/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_rename_inline/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_rename_inline/panel_before.png
new file mode 100644
index 000000000..ab26a0451
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_rename_inline/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_rename_inline/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_rename_inline/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_rename_inline/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_rename_inline/session.rv b/src/test/golden/session_manager/golden-mac/sm_rename_inline/session.rv
new file mode 100644
index 000000000..f664e2ccf
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_rename_inline/session.rv
@@ -0,0 +1,921 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "NewNameAfterRename"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_select_node/nav_after.png b/src/test/golden/session_manager/golden-mac/sm_select_node/nav_after.png
new file mode 100644
index 000000000..092a9e8b5
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_select_node/nav_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_select_node/nav_before.png b/src/test/golden/session_manager/golden-mac/sm_select_node/nav_before.png
new file mode 100644
index 000000000..0e531fc98
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_select_node/nav_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_select_node/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_select_node/panel_after.png
new file mode 100644
index 000000000..6a4fb2a50
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_select_node/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_select_node/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_select_node/panel_before.png
new file mode 100644
index 000000000..5ab79e260
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_select_node/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_select_node/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_select_node/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_select_node/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_select_node/session.rv b/src/test/golden/session_manager/golden-mac/sm_select_node/session.rv
new file mode 100644
index 000000000..598966356
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_select_node/session.rv
@@ -0,0 +1,1465 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000001"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000001" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SourceOne"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SourceTwo"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/panel_set.png b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/panel_set.png
new file mode 100644
index 000000000..6ed6bc8d3
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/panel_set.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/panel_unset.png b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/panel_unset.png
new file mode 100644
index 000000000..6ed6bc8d3
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/panel_unset.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/session.rv b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/session.rv
new file mode 100644
index 000000000..864e4c8fb
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_subcomponent_icons/session.rv
@@ -0,0 +1,921 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 216000 216060 ] ]
+        int[2] region = [ [ 216000 216060 ] ]
+        float fps = 30
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 216000
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 30
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 61 ]
+        int in = [ 216000 0 ]
+        int out = [ 216059 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 30
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "IcSrc"
+    }
+
+    session
+    {
+        float fps = 30
+        int marks = [ ]
+        int frame = 216000
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ "view" "left" ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0001.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216000 216060 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/panel.png b/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/panel.png
new file mode 100644
index 000000000..0440ab17d
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/session.rv b/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/session.rv
new file mode 100644
index 000000000..d5b15e1bd
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_subcomponent_select/session.rv
@@ -0,0 +1,922 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 216000 216060 ] ]
+        int[2] region = [ [ 216000 216060 ] ]
+        float fps = 30
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 216000
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 30
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 61 ]
+        int in = [ 216000 0 ]
+        int out = [ 216059 0 ]
+    }
+
+    output
+    {
+        int size = [ 1920 1080 ]
+        float fps = 30
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 30
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 30
+        int size = [ 1920 1080 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Meridian_-_Clip_0001.mp4"
+    }
+
+    session
+    {
+        float fps = 30
+        int marks = [ ]
+        int frame = 216000
+    }
+
+    sm_state
+    {
+        int tab = 1
+        string expandState = ""
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = "track 1"
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001/Meridian_-_Clip_0001.mp4"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 216000 216060 ] ]
+        int inc = 1
+        float fps = 30
+        int[2] size = [ [ 1920 1080 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 0
+        int Rec709ToLinear = 1
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_categories/panel_after.png b/src/test/golden/session_manager/golden-mac/sm_tree_categories/panel_after.png
new file mode 100644
index 000000000..64f443199
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_categories/panel_after.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_categories/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_tree_categories/panel_before.png
new file mode 100644
index 000000000..2b8a49517
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_categories/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_categories/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_tree_categories/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_categories/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_categories/session.rv b/src/test/golden/session_manager/golden-mac/sm_tree_categories/session.rv
new file mode 100644
index 000000000..0868df2a3
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_categories/session.rv
@@ -0,0 +1,1781 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sourceGroup000000"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sourceGroup000000" "stackGroup" ] [ "sourceGroup000001" "stackGroup" ] [ "sourceGroup000000" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" "stackGroup" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "TestSeq"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Black"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        int tab = 1
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "SMPTEBars"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+stackGroup : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "TestStack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+stackGroup_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+stackGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+stackGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+stackGroup_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+stackGroup_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+stackGroup_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_columns/panel_long.png b/src/test/golden/session_manager/golden-mac/sm_tree_columns/panel_long.png
new file mode 100644
index 000000000..1339c07d2
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_columns/panel_long.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_columns/panel_short.png b/src/test/golden/session_manager/golden-mac/sm_tree_columns/panel_short.png
new file mode 100644
index 000000000..d671ef930
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_columns/panel_short.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_columns/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_tree_columns/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_columns/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_columns/session.rv b/src/test/golden/session_manager/golden-mac/sm_tree_columns/session.rv
new file mode 100644
index 000000000..9c9f286d6
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_columns/session.rv
@@ -0,0 +1,904 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sourceGroup000000" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 0 ]
+        int frame = [ 1 25 ]
+        int in = [ 1 0 ]
+        int out = [ 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/panel_before.png b/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/panel_before.png
new file mode 100644
index 000000000..45822e98a
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/panel_before.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/session.rv b/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/session.rv
new file mode 100644
index 000000000..3374eabb7
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_event_clear/session.rv
@@ -0,0 +1,371 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.660000026
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+    }
+
+    session
+    {
+        string viewNode = "defaultSequence"
+        int[2] range = [ [ 1 2 ] ]
+        int[2] region = [ [ 1 2 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "viewGroup" "defaultOutputGroup" ] [ "defaultSequence" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ ]
+        int frame = [ ]
+        int in = [ ]
+        int out = [ ]
+    }
+
+    output
+    {
+        int size = [ 720 480 ]
+        float fps = 0
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 0
+        int size = [ 720 480 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/panel.png b/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/panel.png
new file mode 100644
index 000000000..20b5ec8ec
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/session.rv b/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/session.rv
new file mode 100644
index 000000000..b7c14b8b9
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_event_newnode/session.rv
@@ -0,0 +1,1611 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+    }
+
+    session
+    {
+        string viewNode = "sequenceGroup"
+        int[2] range = [ [ 1 49 ] ]
+        int[2] region = [ [ 1 49 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000000" "sequenceGroup" ] [ "sourceGroup000001" "sequenceGroup" ] [ "sequenceGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "sequenceGroup" "sourceGroup000000" "sourceGroup000001" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sequenceGroup : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "EvSequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+}
+
+sequenceGroup_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+sequenceGroup_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 0 ]
+        int frame = [ 1 25 49 ]
+        int in = [ 1 1 0 ]
+        int out = [ 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "EvSrc1"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "EvSrc2"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/panel.png b/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/panel.png
new file mode 100644
index 000000000..fd9252b85
Binary files /dev/null and b/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/panel.png differ
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/runtime_errors.txt b/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/runtime_errors.txt
new file mode 100644
index 000000000..524a1305e
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/runtime_errors.txt
@@ -0,0 +1,4 @@
+# Normalized runtime error signatures from Mu capture.
+# Python port must not introduce errors beyond this set.
+ERROR: Exception thrown while calling commands.defineMinorMode, Duplicate mode: Source Setup
+RuntimeError: bad any cast @ File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in load_manifest | File "/Users/termev/Documents/Dub/OpenRV-AI-loop-main/_build/stage/app/RV.app/Contents/lib/python3.11/site-packages/opentimelineio/plugins/manifest.py", line N, in manifest_from_file
diff --git a/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/session.rv b/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/session.rv
new file mode 100644
index 000000000..34e7d7d75
--- /dev/null
+++ b/src/test/golden/session_manager/golden-mac/sm_tree_folder_sort/session.rv
@@ -0,0 +1,2028 @@
+GTOa (4)
+
+rv : RVSession (4)
+{
+    matte
+    {
+        int show = 0
+        float aspect = 1.33000004
+        float opacity = 0.330000013
+        float heightVisible = -1
+        float[2] centerPoint = [ [ 0 0 ] ]
+    }
+
+    paintEffects
+    {
+        int hold = 0
+        int ghost = 0
+        int ghostBefore = 5
+        int ghostAfter = 5
+    }
+
+    sm_view
+    {
+        int SEQUENCES = 1
+        int STACKS = 1
+        int LAYOUTS = 1
+        int SOURCES = 1
+        int FOLDERS = 1
+    }
+
+    session
+    {
+        string viewNode = "folderGroup"
+        int[2] range = [ [ 1 25 ] ]
+        int[2] region = [ [ 1 25 ] ]
+        float fps = 24
+        int realtime = 0
+        int inc = 1
+        int currentFrame = 1
+        int marks = [ ]
+        int version = 2
+    }
+}
+
+connections : connection (2)
+{
+    evaluation
+    {
+        string[2] connections = [ [ "sourceGroup000000" "defaultLayout" ] [ "sourceGroup000001" "defaultLayout" ] [ "sourceGroup000002" "defaultLayout" ] [ "viewGroup" "defaultOutputGroup" ] [ "sourceGroup000000" "defaultSequence" ] [ "sourceGroup000001" "defaultSequence" ] [ "sourceGroup000002" "defaultSequence" ] [ "sourceGroup000000" "defaultStack" ] [ "sourceGroup000001" "defaultStack" ] [ "sourceGroup000002" "defaultStack" ] [ "sourceGroup000000" "folderGroup" ] [ "sourceGroup000001" "folderGroup" ] [ "sourceGroup000002" "folderGroup" ] [ "folderGroup" "viewGroup" ] ]
+        string roots = "defaultOutputGroup"
+    }
+
+    top
+    {
+        string nodes = [ "defaultLayout" "defaultSequence" "defaultStack" "folderGroup" "sourceGroup000000" "sourceGroup000001" "sourceGroup000002" ]
+    }
+}
+
+defaultLayout : RVLayoutGroup (1)
+{
+    ui
+    {
+        string name = "Default Layout"
+    }
+
+    layout
+    {
+        string mode = "packed"
+        float spacing = 1
+        int gridRows = 0
+        int gridColumns = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+}
+
+defaultLayout_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultLayout_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultLayout_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ -0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0.444444448 0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultLayout_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 -0.25 ] ]
+        float[2] scale = [ [ 0.5 0.5 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultOutputGroup : RVOutputGroup (1)
+{
+    output
+    {
+        int active = 1
+        int width = 0
+        int height = 0
+        string dataType = "uint8"
+        float pixelAspect = 1
+    }
+}
+
+defaultOutputGroup_colorPipeline : RVDisplayPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVDisplayColor"
+    }
+}
+
+defaultOutputGroup_colorPipeline_0 : RVDisplayColor (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        string channelOrder = "RGBA"
+        int channelFlood = 0
+        int premult = 0
+        float gamma = 1
+        int sRGB = 0
+        int Rec709 = 0
+        float brightness = 0
+        int outOfRange = 0
+        int dither = 0
+        int ditherLast = 1
+        int active = 1
+    }
+
+    chromaticities
+    {
+        int active = 0
+        int adoptedNeutral = 1
+        float[2] white = [ [ 0.312700003 0.328999996 ] ]
+        float[2] red = [ [ 0.639999986 0.330000013 ] ]
+        float[2] green = [ [ 0.300000012 0.600000024 ] ]
+        float[2] blue = [ [ 0.150000006 0.0599999987 ] ]
+        float[2] neutral = [ [ 0.312700003 0.328999996 ] ]
+    }
+}
+
+defaultOutputGroup_stereo : RVDisplayStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+        string type = "off"
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+defaultSequence : RVSequenceGroup (1)
+{
+    ui
+    {
+        string name = "Default Sequence"
+    }
+
+    soundtrack
+    {
+        string file = ""
+        float offset = 0
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    session
+    {
+        int marks = [ ]
+        int frame = 1
+        float fps = 24
+    }
+
+    sm_state
+    {
+        int tab = 0
+    }
+}
+
+defaultSequence_p_sourceGroup000000 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000001 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_p_sourceGroup000002 : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultSequence_sequence : RVSequence (1)
+{
+    edl
+    {
+        int source = [ 0 1 2 0 ]
+        int frame = [ 1 25 49 73 ]
+        int in = [ 1 1 1 0 ]
+        int out = [ 24 24 24 0 ]
+    }
+
+    output
+    {
+        int size = [ 1280 720 ]
+        float fps = 24
+        int interactiveSize = 1
+        int autoSize = 1
+    }
+
+    mode
+    {
+        int autoEDL = 1
+        int useCutInfo = 1
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string inputBlendModes = [ ]
+        float inputOpacities = [ ]
+        float inputAngularMaskPivotX = [ ]
+        float inputAngularMaskPivotY = [ ]
+        float inputAngularMaskAngleInRadians = [ ]
+        int inputAngularMaskActive = [ ]
+        int swapAngularMaskInput = [ ]
+    }
+}
+
+defaultStack : RVStackGroup (1)
+{
+    ui
+    {
+        string name = "Default Stack"
+    }
+
+    timing
+    {
+        int retimeInputs = 1
+    }
+
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+}
+
+defaultStack_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000000 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000001 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_rt_sourceGroup000002 : RVRetime (1)
+{
+    visual
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    audio
+    {
+        float scale = 1
+        float offset = 0
+    }
+
+    output
+    {
+        float fps = 24
+    }
+
+    warp
+    {
+        int active = 0
+        int style = 0
+        int keyFrames = [ ]
+        float keyRates = [ ]
+    }
+
+    explicit
+    {
+        int active = 0
+        int firstOutputFrame = 1
+        int inputFrames = [ ]
+    }
+}
+
+defaultStack_stack : RVStack (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string chosenAudioInput = ".all."
+        int interactiveSize = 0
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int alignStartFrames = 0
+        int strictFrameRanges = 0
+        int supportReversedOrderBlending = 1
+    }
+
+    composite
+    {
+        string type = "over"
+        float dissolveAmount = 0.5
+    }
+}
+
+defaultStack_t_sourceGroup000000 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000001 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+defaultStack_t_sourceGroup000002 : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+folderGroup : RVFolderGroup (1)
+{
+    ui
+    {
+        string name = "SortedFolder"
+    }
+
+    mode
+    {
+        string viewType = "switch"
+    }
+
+    session
+    {
+        float fps = 24
+        int marks = [ ]
+        int frame = 1
+    }
+
+    sm_state
+    {
+        string sortKeyParent = [ "sourceGroup000002" "sourceGroup000000" "sourceGroup000001" ]
+        int[3] sortKey = [ [ 0 1 2 ] ]
+    }
+}
+
+folderGroup_switch : RVSwitch (1)
+{
+    output
+    {
+        float fps = 24
+        int size = [ 1280 720 ]
+        int autoSize = 1
+        string input = ""
+    }
+
+    mode
+    {
+        int useCutInfo = 1
+        int autoEDL = 1
+        int alignStartFrames = 0
+    }
+}
+
+sourceGroup000000 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Alpha"
+    }
+}
+
+sourceGroup000000_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000000_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000000_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000000_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000000_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000000_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000000_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000000_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000000_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000000_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "black,width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000000_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000000_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000000_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000000_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000000_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000001 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Beta"
+    }
+}
+
+sourceGroup000001_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000001_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000001_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000001_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000001_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000001_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000001_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000001_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000001_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000001_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "smptebars,width=1280,height=720,fps=24,start=1,end=24.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000001_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000001_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000001_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000001_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000001_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+sourceGroup000002 : RVSourceGroup (1)
+{
+    markers
+    {
+        int in = [ ]
+        int out = [ ]
+        float[4] color = [ ]
+        string name = [ ]
+    }
+
+    ui
+    {
+        string name = "Gamma"
+    }
+}
+
+sourceGroup000002_cache : RVCache (1)
+{
+    render
+    {
+        int downSampling = 1
+    }
+}
+
+sourceGroup000002_cacheLUT : RVCacheLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_channelMap : RVChannelMap (1)
+{
+    format
+    {
+        string channels = [ ]
+    }
+}
+
+sourceGroup000002_colorPipeline : RVColorPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVColor"
+    }
+}
+
+sourceGroup000002_colorPipeline_0 : RVColor (2)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int invert = 0
+        float[3] gamma = [ [ 1 1 1 ] ]
+        string lut = "default"
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] scale = [ [ 1 1 1 ] ]
+        float[3] exposure = [ [ 0 0 0 ] ]
+        float[3] contrast = [ [ 0 0 0 ] ]
+        float saturation = 1
+        int normalize = 0
+        float hue = 0
+        int active = 1
+        int unpremult = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        string colorspace = "rec709"
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+
+    luminanceLUT
+    {
+        float lut = [ ]
+        float max = 1
+        int size = 0
+        string name = ""
+        int active = 0
+    }
+
+    "luminanceLUT:output"
+    {
+        int size = 256
+    }
+}
+
+sourceGroup000002_format : RVFormat (1)
+{
+    geometry
+    {
+        int xfit = 0
+        int yfit = 0
+        int xresize = 0
+        int yresize = 0
+        float scale = 1
+        string resampleMethod = "area"
+    }
+
+    color
+    {
+        int maxBitDepth = 0
+        int allowFloatingPoint = 1
+    }
+
+    crop
+    {
+        int active = 0
+        int xmin = 0
+        int ymin = 0
+        int xmax = 0
+        int ymax = 0
+    }
+
+    uncrop
+    {
+        int active = 0
+        int width = 0
+        int height = 0
+        int x = 0
+        int y = 0
+    }
+}
+
+sourceGroup000002_lookPipeline : RVLookPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = "RVLookLUT"
+    }
+}
+
+sourceGroup000002_lookPipeline_0 : RVLookLUT (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+}
+
+sourceGroup000002_overlay : RVOverlay (1)
+{
+    overlay
+    {
+        int nextRectId = 0
+        int nextTextId = 0
+        int show = 1
+    }
+}
+
+sourceGroup000002_paint : RVPaint (3)
+{
+    paint
+    {
+        int nextId = 0
+        int nextAnnotationId = 0
+        int show = 1
+        string exclude = [ ]
+        string include = [ ]
+    }
+}
+
+sourceGroup000002_source : RVFileSource (1)
+{
+    request
+    {
+        string imageComponent = [ ]
+        string stereoViews = [ ]
+        int readAllChannels = 0
+    }
+
+    media
+    {
+        string repName = ""
+        int active = 1
+        string movie = "solid,width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1.movieproc"
+        string name = [ ]
+    }
+
+    group
+    {
+        float fps = 0
+        float volume = 1
+        float audioOffset = 0
+        int rangeOffset = 0
+        int noMovieAudio = 0
+        float balance = 0
+        float crossover = 0
+    }
+
+    cut
+    {
+        int in = -2147483647
+        int out = 2147483647
+    }
+
+    proxy
+    {
+        int[2] range = [ [ 1 25 ] ]
+        int inc = 1
+        float fps = 24
+        int[2] size = [ [ 1280 720 ] ]
+    }
+}
+
+sourceGroup000002_sourceStereo : RVSourceStereo (1)
+{
+    stereo
+    {
+        int swap = 0
+        float relativeOffset = 0
+        float rightOffset = 0
+    }
+
+    rightTransform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+    }
+}
+
+sourceGroup000002_tolinPipeline : RVLinearizePipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ "RVLinearize" "RVLensWarp" ]
+    }
+}
+
+sourceGroup000002_tolinPipeline_0 : RVLinearize (1)
+{
+    lut
+    {
+        float[16] inMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float[16] outMatrix = [ [ 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 ] ]
+        float lut = [ ]
+        float prelut = [ ]
+        float scale = 1
+        float offset = 0
+        float conditioningGamma = 1
+        string type = "Luminance"
+        string name = ""
+        string file = ""
+        int size = [ 0 0 0 ]
+        int active = 0
+    }
+
+    color
+    {
+        int alphaType = 0
+        int logtype = 0
+        int YUV = 0
+        int sRGB2linear = 1
+        int Rec709ToLinear = 0
+        float fileGamma = 1
+        int active = 1
+        int ignoreChromaticities = 0
+    }
+
+    cineon
+    {
+        int whiteCodeValue = 0
+        int blackCodeValue = 0
+        int breakPointValue = 0
+    }
+
+    CDL
+    {
+        int active = 0
+        float[3] slope = [ [ 1 1 1 ] ]
+        float[3] offset = [ [ 0 0 0 ] ]
+        float[3] power = [ [ 1 1 1 ] ]
+        float saturation = 1
+        int noClamp = 0
+    }
+}
+
+sourceGroup000002_tolinPipeline_1 : RVLensWarp (1)
+{
+    node
+    {
+        int active = 1
+    }
+
+    warp
+    {
+        float pixelAspectRatio = 0
+        string model = "brown"
+        float k1 = 0
+        float k2 = 0
+        float k3 = 0
+        float d = 1
+        float p1 = 0
+        float p2 = 0
+        float[2] center = [ [ 0.5 0.5 ] ]
+        float[2] offset = [ [ 0 0 ] ]
+        float fx = 1
+        float fy = 1
+        float cropRatioX = 1
+        float cropRatioY = 1
+        float cx02 = 0
+        float cy02 = 0
+        float cx22 = 0
+        float cy22 = 0
+        float cx04 = 0
+        float cy04 = 0
+        float cx24 = 0
+        float cy24 = 0
+        float cx44 = 0
+        float cy44 = 0
+        float cx06 = 0
+        float cy06 = 0
+        float cx26 = 0
+        float cy26 = 0
+        float cx46 = 0
+        float cy46 = 0
+        float cx66 = 0
+        float cy66 = 0
+    }
+}
+
+sourceGroup000002_transform2D : RVTransform2D (1)
+{
+    transform
+    {
+        int flip = 0
+        int flop = 0
+        float rotate = 0
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+        int active = 1
+    }
+
+    stencil
+    {
+        float visibleBox = [ 0 1 0 1 ]
+    }
+}
+
+viewGroup_dxform : RVDispTransform2D (1)
+{
+    transform
+    {
+        float[2] translate = [ [ 0 0 ] ]
+        float[2] scale = [ [ 1 1 ] ]
+    }
+}
+
+viewGroup_soundtrack : RVSoundTrack (1)
+{
+    audio
+    {
+        float volume = 1
+        float balance = 0
+        float offset = 0
+        float internalOffset = 0
+        int mute = 0
+        int softClamp = 1
+    }
+
+    visual
+    {
+        int width = 0
+        int height = 0
+        int frameStart = 0
+        int frameEnd = 0
+    }
+}
+
+viewGroup_viewPipeline : RVViewPipelineGroup (1)
+{
+    pipeline
+    {
+        string nodes = [ ]
+    }
+}
diff --git a/src/test/golden/session_manager/run_all_goldens_mac.sh b/src/test/golden/session_manager/run_all_goldens_mac.sh
new file mode 100755
index 000000000..288e1dc15
--- /dev/null
+++ b/src/test/golden/session_manager/run_all_goldens_mac.sh
@@ -0,0 +1,169 @@
+#!/usr/bin/env bash
+# Run session_manager golden scenarios against golden-mac/ (macOS native display).
+#
+# Usage:
+#   ./run_all_goldens_mac.sh              # verify Python port (default)
+#   IMPL=mu ./run_all_goldens_mac.sh      # Mu determinism check
+#   ./run_all_goldens_mac.sh sm_select_node  # single scenario
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+COMPARE="$REPO_ROOT/src/test/golden/harness/compare.py"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden-mac"
+IMPL="${IMPL:-python}"
+TIMEOUT="${TIMEOUT:-600}"
+DMAX="${DMAX:-0}"
+GATE="${GATE:-both}"
+
+export SM_MERIDIAN_DIR="${SM_MERIDIAN_DIR:-/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001}"
+
+# Not part of the per-gate suite: 83 clips x 2 rvio jobs at MAX_WORKERS=2 would be
+# paid once per gate. run_folder_thumbnails_all.sh runs it after the gates pass.
+# Still runnable by naming it explicitly.
+GATE_EXCLUDED_IDS="${GATE_EXCLUDED_IDS:-sm_folder_thumbnails_all}"
+
+all_required_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_*.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+is_gate_excluded() {
+    for skip in $GATE_EXCLUDED_IDS; do
+        [ "$1" = "$skip" ] && return 0
+    done
+    return 1
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    ids=()
+    while IFS= read -r id; do
+        is_gate_excluded "$id" && continue
+        ids+=("$id")
+    done < <(all_required_ids)
+fi
+
+pass=0
+fail=0
+fail_list=""
+
+if [ "$GATE" = "default" ]; then
+    IMPL=default
+fi
+
+gate_note="behavioral+pixel dmax=$DMAX"
+case "$GATE" in
+    behavioral) gate_note="behavioral-only" ;;
+    pixel)      gate_note="pixel-only dmax=$DMAX" ;;
+    default)    gate_note="default-launch behavioral-only" ;;
+    runtime)    gate_note="runtime delta vs Mu golden (runtime_errors.txt)" ;;
+esac
+
+echo "session_manager goldens (Mac): impl=$IMPL gate=$GATE ($gate_note) timeout=${TIMEOUT}s (${#ids[@]} scenarios)"
+
+for id in "${ids[@]}"; do
+    golden_dir="$GOLDEN/$id"
+    scenario="$SCENARIOS/${id}.py"
+    out="/tmp/golden_sm_${id}"
+    if [ ! -f "$golden_dir/session.rv" ]; then
+        echo "FAIL $id (no golden-mac baseline — run capture_golden_mac.sh $id)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    rm -rf "$out"
+    mkdir -p "$out"
+    runtime_golden_flag=(--runtime-golden-dir "$golden_dir")
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out" --rv "$RV" \
+        --impl "$IMPL" --no-xvfb --timeout "$TIMEOUT" \
+        "${runtime_golden_flag[@]}" >/dev/null 2>&1; then
+        if [ "$GATE" = "runtime" ]; then
+            echo "FAIL $id (runtime — new errors vs golden; see $out/runtime_errors.txt)"
+        else
+            echo "FAIL $id (run_scenario)"
+        fi
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        pkill -f "${RV} " 2>/dev/null || true
+        sleep 0.3
+        continue
+    fi
+    if [ "$GATE" = "runtime" ]; then
+        echo "PASS $id"
+        pass=$((pass + 1))
+        pkill -f "${RV} " 2>/dev/null || true
+        sleep 0.3
+        continue
+    fi
+    compare_rc=0
+    compare_out="$(python3 "$COMPARE" \
+        --golden-dir "$golden_dir" --actual-dir "$out" --dmax "$DMAX" 2>&1)" || compare_rc=$?
+    compare_rc=${compare_rc:-0}
+    behavioral_ok=0
+    pixel_ok=0
+    if echo "$compare_out" | grep -q "^behavioral: MATCH"; then
+        behavioral_ok=1
+    fi
+    if echo "$compare_out" | grep -q "pixel: MATCH"; then
+        pixel_ok=1
+    fi
+    has_png_golden=0
+    if compgen -G "$golden_dir/*.png" >/dev/null 2>&1; then
+        has_png_golden=1
+    fi
+    case "$GATE" in
+        behavioral|default)
+            if [ "$behavioral_ok" -eq 1 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (behavioral)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+        pixel)
+            # A scenario with no PNG baseline is a hole in the pixel gate, not a
+            # pass: every scenario must pin its outcome in pixels.
+            if [ "$has_png_golden" -eq 0 ]; then
+                echo "FAIL $id (no PNG baseline — scenario must capture at least one image)"
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            elif [ "$pixel_ok" -eq 1 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (pixel)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+        both)
+            if [ "$compare_rc" -eq 0 ]; then
+                echo "PASS $id"
+                pass=$((pass + 1))
+            else
+                echo "FAIL $id (compare)"
+                echo "$compare_out" | head -10
+                fail=$((fail + 1)); fail_list="$fail_list $id"
+            fi
+            ;;
+    esac
+    pkill -f "${RV} " 2>/dev/null || true
+    sleep 0.3
+done
+
+echo "--- PASS=$pass FAIL=$fail"
+if [ "$fail" -gt 0 ]; then
+    echo "Failed:$fail_list"
+    exit 1
+fi
diff --git a/src/test/golden/session_manager/run_folder_thumbnails_all.sh b/src/test/golden/session_manager/run_folder_thumbnails_all.sh
new file mode 100755
index 000000000..82e60bd04
--- /dev/null
+++ b/src/test/golden/session_manager/run_folder_thumbnails_all.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+# Full-folder thumbnail check: load EVERY clip in SM_MERIDIAN_DIR (83 at the time
+# of writing) and wait for all thumbnails and filmstrips to be generated.
+#
+# Behavioral gate only, unlike every other scenario. At 83 rows the panel PNG is
+# not bit-reproducible between two runs of the *same* implementation: Qt
+# re-rasterises the row labels with different subpixel weights under the font-cache
+# churn of that many rows, and the per-pixel delta on a glyph edge reaches 167/255,
+# so no dmax that still means anything can absorb it. Verified by capturing twice
+# and diffing -- same glyphs, same layout, different rasterisation, in both the
+# fallback and the generated half.
+#
+# Nothing is lost by dropping the pixel half here. What this scenario is for is
+# asserted inside the scenario, on the graph and the cache rather than on pixels:
+# 83 thumbnails and 83 filmstrips written, 83 rows off the fallback icon, and 83
+# *distinct* row images (identical ones would mean rows sharing one thumbnail).
+# The pixel-exact version of the same panel is sm_folder_thumbnails, at 12 clips,
+# which does capture deterministically and is gated at dmax 0 like everything else.
+#
+# Kept out of the per-gate suite (GATE_EXCLUDED_IDS in run_all_goldens_mac.sh)
+# because it is 2 rvio jobs per clip at MAX_WORKERS=2; it is a mandatory check
+# after all six gates pass, run automatically at the end of
+# run_migration_loop_mac.sh.
+#
+# Usage:
+#   ./run_folder_thumbnails_all.sh              # verify the Python port
+#   IMPL=mu ./run_folder_thumbnails_all.sh      # Mu baseline integrity
+#   CAPTURE=1 ./run_folder_thumbnails_all.sh    # (re)capture the Mu baseline, 2x
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+ID="sm_folder_thumbnails_all"
+IMPL="${IMPL:-python}"
+CAPTURE="${CAPTURE:-0}"
+# 83 clips through a 2-worker rvio pool, plus per-clip load: minutes, not seconds.
+TIMEOUT="${TIMEOUT:-3600}"
+
+export SM_MERIDIAN_DIR="${SM_MERIDIAN_DIR:-/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001}"
+
+clips=$(find "$SM_MERIDIAN_DIR" -maxdepth 1 -name '*.mp4' | wc -l | tr -d ' ')
+echo "full-folder thumbnail check: $clips clips from $SM_MERIDIAN_DIR"
+
+if [ "$CAPTURE" = "1" ]; then
+    echo "capturing Mu baseline for $ID (2 runs, determinism enforced)"
+    exec env FORCE=1 TIMEOUT="$TIMEOUT" "$PKG/capture_golden_mac.sh" "$ID"
+fi
+
+exec env IMPL="$IMPL" TIMEOUT="$TIMEOUT" GATE="${GATE:-behavioral}" DMAX="${DMAX:-0}" \
+    "$PKG/run_all_goldens_mac.sh" "$ID"
diff --git a/src/test/golden/session_manager/run_gui_sanity_gate.sh b/src/test/golden/session_manager/run_gui_sanity_gate.sh
new file mode 100755
index 000000000..21298cf2e
--- /dev/null
+++ b/src/test/golden/session_manager/run_gui_sanity_gate.sh
@@ -0,0 +1,121 @@
+#!/usr/bin/env bash
+# GUI sanity gate for session_manager — real display, behavioral hard, pixel report-only.
+#
+# Known limitation: sm_meridian_mp4_load, sm_media_add_sources, sm_mp4_all use
+# addSources() + waitForProgressiveLoading() which hangs forever under a real display
+# (confirmed 2026-07-24 on macOS native). Skipped here only; all three have golden
+# baselines and run in run_all_goldens_mac.sh under --no-xvfb.
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PKG="$HERE"
+REPO_ROOT="$(cd "$PKG/../../../.." && pwd)"
+RUNNER="$REPO_ROOT/src/test/golden/harness/run_scenario.py"
+COMPARE="$REPO_ROOT/src/test/golden/harness/compare.py"
+RV="${RV:-$REPO_ROOT/_build/stage/app/RV.app/Contents/MacOS/RV}"
+SCENARIOS="$PKG/scenarios"
+GOLDEN="$PKG/golden-mac"
+IMPL="${IMPL:-python}"
+TIMEOUT="${TIMEOUT:-600}"
+
+export SM_MERIDIAN_DIR="${SM_MERIDIAN_DIR:-/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001}"
+
+# The mp4 scenarios used to be skipped here: they called
+# rvc.waitForProgressiveLoading(), which deadlocks on a real display because the
+# loader needs the event loop the blocking wait stops. The helpers now poll
+# loadTotal() while pumping and load folders with addSourceVerbose, so every mp4
+# scenario runs under this gate (verified 2026-08-03: sm_meridian_mp4_load 4.9s).
+# Only the full-folder scenario stays out, on cost grounds.
+SKIP_IDS="${SKIP_IDS:-sm_folder_thumbnails_all}"
+
+should_skip() {
+    local id="$1"
+    for skip in $SKIP_IDS; do
+        [ "$id" = "$skip" ] && return 0
+    done
+    return 1
+}
+
+all_required_ids() {
+    find "$SCENARIOS" -maxdepth 1 -name '*.py' ! -name '_*.py' -exec basename {} \; \
+        | sed 's/\.py$//' | sort
+}
+
+ids=("$@")
+if [ ${#ids[@]} -eq 0 ]; then
+    ids=()
+    while IFS= read -r id; do
+        ids+=("$id")
+    done < <(all_required_ids)
+fi
+
+pass=0
+fail=0
+fail_list=""
+review_ids=""
+skipped=0
+
+echo "session_manager GUI sanity: impl=$IMPL real-display (${#ids[@]} scenarios)"
+echo "Skipping (covered by run_folder_thumbnails_all.sh after the gates): $SKIP_IDS"
+
+for id in "${ids[@]}"; do
+    if should_skip "$id"; then
+        echo "SKIP $id (run separately by run_folder_thumbnails_all.sh)"
+        skipped=$((skipped + 1))
+        continue
+    fi
+    golden_dir="$GOLDEN/$id"
+    scenario="$SCENARIOS/${id}.py"
+    out="/tmp/sm_gui_sanity_${id}"
+    if [ ! -f "$golden_dir/session.rv" ]; then
+        echo "FAIL $id (no golden-mac baseline)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    rm -rf "$out"
+    mkdir -p "$out"
+    if ! python3 "$RUNNER" \
+        --scenario "$scenario" --out "$out" --rv "$RV" \
+        --impl "$IMPL" --no-xvfb --timeout "$TIMEOUT" \
+        --runtime-golden-dir "$golden_dir" >/dev/null 2>&1; then
+        echo "FAIL $id (run_scenario)"
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    compare_rc=0
+    compare_out="$(python3 "$COMPARE" \
+        --golden-dir "$golden_dir" \
+        --behavioral-golden-dir "$golden_dir" \
+        --actual-dir "$out" \
+        --pixel-mode report 2>&1)" || compare_rc=$?
+    if [ "$compare_rc" -ne 0 ]; then
+        echo "FAIL $id (behavioral mismatch or missing artifact)"
+        echo "$compare_out" | head -8
+        fail=$((fail + 1)); fail_list="$fail_list $id"
+        continue
+    fi
+    if echo "$compare_out" | grep -q "pixel: INFO"; then
+        review_ids="$review_ids $id"
+        echo "PASS $id (behavioral OK — pixel report needs review)"
+    else
+        echo "PASS $id"
+    fi
+    pass=$((pass + 1))
+done
+
+echo "---"
+echo "PASS=$pass FAIL=$fail SKIP=$skipped"
+if [ -n "$review_ids" ]; then
+    echo "NEEDS_AI_REVIEW:$review_ids"
+fi
+
+if [ "$fail" -gt 0 ]; then
+    echo "Failed:$fail_list"
+    exit 1
+fi
diff --git a/src/test/golden/session_manager/run_migration_loop_mac.sh b/src/test/golden/session_manager/run_migration_loop_mac.sh
new file mode 100755
index 000000000..be6aef902
--- /dev/null
+++ b/src/test/golden/session_manager/run_migration_loop_mac.sh
@@ -0,0 +1,122 @@
+#!/usr/bin/env bash
+# Full migration loop — session_manager (macOS, golden-mac/).
+#
+# Usage:
+#   ./run_migration_loop_mac.sh
+#   SKIP_SANITY=1 ./run_migration_loop_mac.sh
+#   SKIP_REVIEW=1 ./run_migration_loop_mac.sh
+#   SM_MERIDIAN_DIR=/path/to/clips ./run_migration_loop_mac.sh
+#
+set -euo pipefail
+
+if [ -z "${CAFFEINATED:-}" ]; then
+    export CAFFEINATED=1
+    exec caffeinate -d -i "$0" "$@"
+fi
+
+HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "$HERE/../../../.." && pwd)"
+GOLDEN_PKG_DIR="$HERE"
+# shellcheck disable=SC1091
+source "$REPO_ROOT/src/test/golden/harness/migration_loop_agent_reminder.sh"
+SKIP_SANITY="${SKIP_SANITY:-0}"
+SKIP_REVIEW="${SKIP_REVIEW:-0}"
+
+# Default media fixture path — override with SM_MERIDIAN_DIR env var.
+export SM_MERIDIAN_DIR="${SM_MERIDIAN_DIR:-/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001}"
+
+echo "=============================================="
+echo "session_manager migration loop (Mac)"
+echo "See: $REPO_ROOT/src/test/golden/VERIFICATION.md"
+echo "SM_MERIDIAN_DIR=$SM_MERIDIAN_DIR"
+echo "=============================================="
+
+echo
+echo ">>> GATE 0 (MANDATORY): Runtime clean"
+if ! GATE=runtime IMPL=python "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 0 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 1 (MANDATORY): Behavioral"
+if ! GATE=behavioral IMPL=python "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 1 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 2 (MANDATORY): Pixel"
+if ! GATE=pixel IMPL=python "$HERE/run_all_goldens_mac.sh"; then
+    if [ "${SKIP_PIXEL_GATE:-0}" = "1" ]; then
+        echo "GATE 2 FAILED — SKIP_PIXEL_GATE=1, continuing"
+    else
+        echo "GATE 2 FAILED"
+        exit 1
+    fi
+else
+    echo "GATE 2 PASSED"
+fi
+
+if [ "${SKIP_PIXEL_GATE:-0}" != "1" ]; then
+    if [ "$SKIP_SANITY" = "1" ]; then
+        echo "SKIP sanity (SKIP_SANITY=1)"
+    else
+        echo
+        echo ">>> SANITY (conditional): GUI real-display gate"
+        if ! "$HERE/run_gui_sanity_gate.sh"; then
+            echo "SANITY FAILED (behavioral)"
+            exit 1
+        fi
+    fi
+
+    if [ "$SKIP_REVIEW" = "1" ]; then
+        echo "SKIP review agent (SKIP_REVIEW=1)"
+    else
+        echo
+        echo ">>> REVIEW AGENT (conditional)"
+        PARENT="$(git -C "$REPO_ROOT" rev-parse HEAD~1 2>/dev/null || echo "")"
+        HEAD="$(git -C "$REPO_ROOT" rev-parse HEAD 2>/dev/null || echo "")"
+        echo "Review diff: $PARENT..$HEAD"
+        echo "Scope: src/plugins/rv-packages/session_manager/*.py"
+        git -C "$REPO_ROOT" diff --name-only "$PARENT" HEAD -- \
+            'src/plugins/rv-packages/session_manager/*.py' 2>/dev/null || true
+    fi
+fi
+
+echo
+echo ">>> GATE 3 (MANDATORY): Default launch"
+if ! GATE=default "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 3 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 4 (MANDATORY): Mu baseline integrity"
+if ! GATE=both IMPL=mu "$HERE/run_all_goldens_mac.sh"; then
+    echo "GATE 4 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> GATE 5 (MANDATORY): Python unit tests"
+if ! GOLDEN_PKG_DIR="$HERE" "$REPO_ROOT/src/test/golden/harness/run_unit_tests.sh"; then
+    echo "GATE 5 FAILED"
+    exit 1
+fi
+
+echo
+echo ">>> FULL-FOLDER THUMBNAILS (MANDATORY, post-gate)"
+# The gated suite loads a 12-clip subset so each gate stays affordable; the whole
+# folder is checked once here, after the gates are green.
+if ! IMPL=python "$HERE/run_folder_thumbnails_all.sh"; then
+    echo "FULL-FOLDER THUMBNAIL CHECK FAILED"
+    exit 1
+fi
+
+echo
+echo "=============================================="
+echo "MIGRATION LOOP PASSED"
+echo "Confirm: sanity pixel review + code review (no blocking findings)."
+echo "Update COVERAGE.md; ask user about removing Mu sources."
+echo "=============================================="
diff --git a/src/test/golden/session_manager/scenarios/_sm_common.py b/src/test/golden/session_manager/scenarios/_sm_common.py
new file mode 100644
index 000000000..35be2150c
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/_sm_common.py
@@ -0,0 +1,1643 @@
+#
+# Shared helpers for session_manager golden scenarios.
+#
+# Copyright (C) 2026  Autodesk, Inc. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+from __future__ import annotations
+
+import hashlib
+import os
+import time
+
+import rv.commands as rvc
+import rv.qtutils as qtutils
+from qt_scenario_utils import QtCore, QtWidgets, QTest, pump, clear_hover, opaque_rgb, click_button, open_tool_button_menu, click_menu_action
+
+SM_MODE = "session_manager"
+
+
+# ---------------------------------------------------------------------------
+# RV Python API shims (functions missing from rv.commands in installed RV)
+# ---------------------------------------------------------------------------
+
+def set_ui_name(node: str, name: str) -> None:
+    """Set a node's display name via the ui.name property."""
+    prop = node + ".ui.name"
+    if not rvc.propertyExists(prop):
+        rvc.newProperty(prop, rvc.StringType, 1)
+    rvc.setStringProperty(prop, [name], True)
+
+
+def get_ui_name(node: str) -> str:
+    """Get a node's display name from the ui.name property, or the node name."""
+    prop = node + ".ui.name"
+    if rvc.propertyExists(prop):
+        vals = rvc.getStringProperty(prop)
+        if vals and vals[0]:
+            return vals[0]
+    return node
+
+# Media fixture — override with SM_MERIDIAN_DIR env var.
+_DEFAULT_MERIDIAN = (
+    "/Users/termev/Documents/media/Meridian-PS-Cloth/Meridian-Cloth-PS-V001"
+)
+SM_MERIDIAN_DIR = os.environ.get("SM_MERIDIAN_DIR", _DEFAULT_MERIDIAN)
+SM_CLIP_1 = os.path.join(SM_MERIDIAN_DIR, "Meridian_-_Clip_0001.mp4")
+SM_CLIP_2 = os.path.join(SM_MERIDIAN_DIR, "Meridian_-_Clip_0002.mp4")
+SM_CLIP_3 = os.path.join(SM_MERIDIAN_DIR, "Meridian_-_Clip_0003.mp4")
+
+
+# How many clips of the fixture folder the gated scenario loads. The folder holds
+# 83 clips; generation is two rvio jobs per clip at MAX_WORKERS=2, and the gated
+# scenario runs once per gate, so the full folder is exercised separately by
+# run_folder_thumbnails_all.sh after the gates pass instead.
+SM_FOLDER_CLIP_COUNT = int(os.environ.get("SM_FOLDER_CLIP_COUNT", "12"))
+
+# Source-row preview widget size (mirrors SOURCE_PREVIEW_WIDTH/HEIGHT in the mode).
+SOURCE_PREVIEW_WIDTH = 80
+SOURCE_PREVIEW_HEIGHT = 45
+
+# Panel grab size — fixed logical size for deterministic pixel golden.
+PANEL_GRAB_W = 400
+PANEL_GRAB_H = 600
+NAV_GRAB_W = 400
+NAV_GRAB_H = 40
+
+# Source preview box (session_manager.mu.in SOURCE_PREVIEW_WIDTH/HEIGHT).
+SOURCE_PREVIEW_WIDTH = 80
+SOURCE_PREVIEW_HEIGHT = 45
+
+# Movieproc templates — %s filled with param string.
+MOVIEPROC_FMT = "%s.movieproc"
+
+
+# ---------------------------------------------------------------------------
+# Mode helpers
+# ---------------------------------------------------------------------------
+
+def activate_session_manager(log=None) -> None:
+    """Activate session_manager and confirm the dock widget is accessible.
+
+    Key constraint: the installed RV's session_manager calls deleteLater() on its
+    dock within ~1ms of activation (its lazy update timer fires, detects no viewable
+    nodes, and hides/destroys the dock). Pumping the event loop after activateMode
+    triggers this deletion. Solution: find the dock BEFORE pumping, then store a
+    direct reference the caller can use via find_dock_widget() (re-calls findChild
+    each time for a fresh C++ wrapper).
+
+    Callers should add any needed sources BEFORE calling activate_session_manager,
+    so the mode sees media and does NOT auto-deactivate.
+    """
+    if log:
+        log("activateMode", SM_MODE)
+    try:
+        rvc.activateMode(SM_MODE)
+    except Exception as e:
+        if log:
+            log("activateMode raised (non-fatal):", e)
+    # Minimal pump — enough for the dock to be created but NOT for the lazy timer to fire.
+    pump(50)
+    dock = find_dock_widget(log=log)
+    assert dock is not None, (
+        "session_manager dock widget not found after activateMode. "
+        "Ensure ModeManagerPreload=session_manager is in the RV flags "
+        "(run_scenario.py handles this automatically)."
+    )
+    if log:
+        log("session_manager dock found and accessible")
+
+
+def deactivate_session_manager(log=None) -> None:
+    if rvc.isModeActive(SM_MODE):
+        if log:
+            log("deactivateMode", SM_MODE)
+        rvc.deactivateMode(SM_MODE)
+    pump(300)
+
+
+# ---------------------------------------------------------------------------
+# Widget finders — all search within the dock or main window
+# ---------------------------------------------------------------------------
+
+def find_dock_widget(log=None) -> QtWidgets.QDockWidget | None:
+    """Find the session manager QDockWidget.
+
+    Searches by objectName first, then falls back to window title
+    ("Session Manager") to handle installed-RV builds whose dock
+    objectName may be empty or differ from the source-tree name.
+    """
+    _TITLE_VARIANTS = ("Session Manager", "session_manager", SM_MODE)
+
+    def _is_sm_dock(dock):
+        if dock.objectName() == SM_MODE:
+            return True
+        return dock.windowTitle() in _TITLE_VARIANTS
+
+    # Scan allWidgets first and validate each candidate by touching it. The mode
+    # tears down and recreates its dock as the session changes, and findChild()
+    # will hand back a wrapper for one that is already destroyed in C++ -- every
+    # later call on it (or on a widget looked up through it) then raises
+    # "Internal C++ object already deleted".
+    app = QtWidgets.QApplication.instance()
+    live: list[tuple[int, int, QtWidgets.QDockWidget]] = []
+    for w in app.allWidgets():
+        try:
+            if not isinstance(w, QtWidgets.QDockWidget):
+                continue
+            if not _is_sm_dock(w):
+                continue
+            live.append((int(w.isVisible()), int(w.widget() is not None), w))
+        except RuntimeError:
+            continue
+    if live:
+        live.sort(key=lambda c: (-c[0], -c[1]))
+        best = live[0]
+        if log:
+            log("dock found via allWidgets, visible:", bool(best[0]),
+                f"({len(live)} candidate(s))")
+        return best[2]
+
+    win = qtutils.sessionWindow()
+    if win is not None:
+        # Prefer by objectName.
+        dock = win.findChild(QtWidgets.QDockWidget, SM_MODE)
+        if dock is not None:
+            if log:
+                log("dock found by objectName via sessionWindow", dock.isVisible())
+            return dock
+        # Fall back: any dock whose title matches.
+        for dock in win.findChildren(QtWidgets.QDockWidget):
+            if _is_sm_dock(dock):
+                if log:
+                    log("dock found by title", repr(dock.windowTitle()), dock.isVisible())
+                return dock
+        # Last resort: the only dock widget in the window (session_manager is
+        # typically the only dock in a -noPrefs headless launch).
+        all_docks = win.findChildren(QtWidgets.QDockWidget)
+        if len(all_docks) == 1:
+            dock = all_docks[0]
+            if log:
+                log("dock found (sole dock, objectName={!r})".format(dock.objectName()), dock.isVisible())
+            return dock
+
+    # Also scan all top-level widgets.
+    app = QtWidgets.QApplication.instance()
+    for w in app.topLevelWidgets():
+        if w is win:
+            continue
+        dock = w.findChild(QtWidgets.QDockWidget, SM_MODE)
+        if dock is not None:
+            if log:
+                log("dock found in top-level widget", w.objectName(), dock.isVisible())
+            return dock
+        for dock in w.findChildren(QtWidgets.QDockWidget):
+            if _is_sm_dock(dock):
+                if log:
+                    log("dock found by title in top-level", dock.windowTitle())
+                return dock
+
+    if log:
+        log("dock NOT found")
+    return None
+
+
+def find_base_widget(log=None) -> QtWidgets.QWidget | None:
+    """Return the active session_manager content widget (objectName 'sessionManager').
+
+    Uses QApplication.allWidgets() directly — the most reliable approach because
+    any parent-chain traversal (dock.widget(), sessionWindow.findChild) is fragile
+    when the session_manager rebuilds its widget hierarchy via deleteLater cycles.
+    Prefers visible widgets so stale old instances are ranked lower.
+
+    Single allWidgets() pass, no nested lookups: a second scan from inside this
+    function invalidates the wrappers collected by the first, and the widget
+    returned then raises "already deleted" on first use.
+    """
+    app = QtWidgets.QApplication.instance()
+    candidates = []
+    for w in app.allWidgets():
+        try:
+            if w.objectName() == "sessionManager":
+                vis = w.isVisible()
+                candidates.append((vis, w))
+        except RuntimeError:
+            continue
+    if not candidates:
+        if log:
+            log("base widget NOT found")
+        return None
+    candidates.sort(key=lambda x: -int(x[0]))  # prefer visible
+    best = candidates[0][1]
+    if log:
+        log("base widget found via allWidgets, visible:", candidates[0][0],
+            f"({len(candidates)} candidate(s))")
+    return best
+
+
+def _find_titlebar(log=None) -> QtWidgets.QWidget | None:
+    """Return the dock titleBarWidget (objectName 'navPanel')."""
+    app = QtWidgets.QApplication.instance()
+    for w in app.allWidgets():
+        try:
+            if w.objectName() == "navPanel":
+                return w
+        except RuntimeError:
+            continue
+    # Fall back: look inside the dock.
+    dock = find_dock_widget(log=log)
+    if dock is not None:
+        try:
+            return dock.titleBarWidget()
+        except RuntimeError:
+            pass
+    return None
+
+
+def _is_descendant_of(widget, ancestor) -> bool:
+    try:
+        node = widget.parentWidget()
+        while node is not None:
+            if node is ancestor:
+                return True
+            node = node.parentWidget()
+    except RuntimeError:
+        return False
+    return False
+
+
+def _find_child(name: str, cls=QtWidgets.QWidget, log=None):
+    """Find a named widget inside the session_manager UI via allWidgets().
+
+    Goes directly to QApplication.allWidgets() to avoid parent-chain traversal
+    and stale-reference issues when the session_manager rebuilds its widget tree.
+
+    Kept to a single allWidgets() pass with no nested lookups. Scanning again from
+    inside this function (e.g. to resolve the live dock and prefer its
+    descendants) invalidates the wrappers this pass just collected, so the widget
+    returned then raises "Internal C++ object already deleted" on first use even
+    though the underlying panel is alive and well.
+    """
+    app = QtWidgets.QApplication.instance()
+    fallback = None
+    for w in app.allWidgets():
+        try:
+            if w.objectName() != name:
+                continue
+            if not isinstance(w, cls):
+                continue
+            if w.isVisible():
+                return w
+            if fallback is None:
+                fallback = w
+        except RuntimeError:
+            continue
+    return fallback
+
+
+def find_tree_view(log=None):
+    """Return the session tree QTreeView (unnamed, uses QStandardItemModel).
+
+    Searches allWidgets() rather than going through the dock/base widget chain,
+    because intermediate widget wrappers may be stale after the session_manager
+    fires its lazy-update cycle. The session tree is the only unnamed QTreeView
+    (not QTreeWidget) whose model is a QStandardItemModel with invisibleRootItem.
+    """
+    from qt_scenario_utils import QtCore
+    app = QtWidgets.QApplication.instance()
+    candidates = []
+    for w in app.allWidgets():
+        try:
+            if not isinstance(w, QtWidgets.QTreeView):
+                continue
+            if isinstance(w, QtWidgets.QTreeWidget):
+                continue
+            if w.objectName():
+                continue
+            model = w.model()
+            if model is None:
+                continue
+            if not hasattr(model, "invisibleRootItem"):
+                continue
+            root = model.invisibleRootItem()
+            if root is None:
+                continue
+            candidates.append((w, root.rowCount()))
+        except RuntimeError:
+            continue
+    # Prefer the candidate with the most rows (populated tree over empty one).
+    if not candidates:
+        if log:
+            log("tree view NOT found via allWidgets")
+        return None
+    candidates.sort(key=lambda x: -x[1])
+    tv = candidates[0][0]
+    if log:
+        log("tree view found via allWidgets, rows:", candidates[0][1])
+    return tv
+
+
+def find_inputs_view(log=None):
+    """Return the InputsView (QListView, objectName 'inputsViewList') via allWidgets."""
+    app = QtWidgets.QApplication.instance()
+    for w in app.allWidgets():
+        try:
+            if w.objectName() == "inputsViewList" and isinstance(w, QtWidgets.QListView):
+                if log:
+                    log("inputs view found via allWidgets")
+                return w
+        except RuntimeError:
+            continue
+    if log:
+        log("inputs view NOT found")
+    return None
+
+
+def find_button(name: str, log=None) -> QtWidgets.QToolButton | None:
+    btn = _find_child(name, QtWidgets.QToolButton, log=log)
+    if btn is not None:
+        try:
+            _ = btn.isEnabled()  # validity check
+        except RuntimeError:
+            btn = None
+    return btn
+
+
+def find_add_button(log=None):    return find_button("addButton", log=log)
+def find_folder_button(log=None): return find_button("folderButton", log=log)
+def find_delete_button(log=None): return find_button("deleteButton", log=log)
+def find_config_button(log=None): return find_button("configButton", log=log)
+def find_rename_button(log=None): return find_button("renameButton", log=log)
+def find_home_button(log=None):   return find_button("selectCurrentButton", log=log)
+def find_prev_button(log=None):   return find_button("prevViewButton", log=log)
+def find_next_button(log=None):   return find_button("nextViewButton", log=log)
+def find_order_up_button(log=None):     return find_button("orderUpButton", log=log)
+def find_order_down_button(log=None):   return find_button("orderDownButton", log=log)
+def find_sort_asc_button(log=None):     return find_button("sortAscButton", log=log)
+def find_sort_desc_button(log=None):    return find_button("sortDescButton", log=log)
+def find_inputs_delete_button(log=None): return find_button("inputsDeleteButton", log=log)
+
+
+def select_inputs_tab(log=None) -> None:
+    """Ensure the session manager's inputs tab (index 0) is active.
+
+    The tabWidget can be on the viewUITab (index 1) if a source group was
+    previously viewed. Calling this before clicking inputs-panel buttons
+    prevents intermittent 'button not visible' failures when running the full
+    suite sequentially.
+    """
+    app = QtWidgets.QApplication.instance()
+    for w in app.allWidgets():
+        try:
+            if isinstance(w, QtWidgets.QTabWidget) and w.objectName() == "tabWidget":
+                if w.currentIndex() != 0:
+                    w.setCurrentIndex(0)
+                    pump(100)
+                    if log:
+                        log("select_inputs_tab: switched to inputsTab (was index 1)")
+                else:
+                    if log:
+                        log("select_inputs_tab: already on inputsTab")
+                return
+        except RuntimeError:
+            continue
+    if log:
+        log("select_inputs_tab: tabWidget not found")
+
+
+def find_view_label(log=None) -> QtWidgets.QLabel | None:
+    """Find the viewLabel QLabel in the nav bar via allWidgets (stale-ref-safe)."""
+    app = QtWidgets.QApplication.instance()
+    for w in app.allWidgets():
+        try:
+            if w.objectName() == "viewLabel" and isinstance(w, QtWidgets.QLabel):
+                return w
+        except RuntimeError:
+            continue
+    return _find_child("viewLabel", QtWidgets.QLabel, log=log)
+
+
+def find_tab_widget(log=None) -> QtWidgets.QTabWidget | None:
+    return _find_child("tabWidget", QtWidgets.QTabWidget, log=log)
+
+
+# ---------------------------------------------------------------------------
+# Movieproc source creation helpers (via command API — bypasses dialog)
+# ---------------------------------------------------------------------------
+
+def add_movieproc_source(fmtspec: str, params: str, name: str, log=None) -> str:
+    """Add a movieproc source and return the source node name.
+
+    fmtspec: e.g. "black" → full URL "black,width=1280,...movieproc"
+    """
+    url = f"{fmtspec},{params}.movieproc"
+    if log:
+        log("addSourceVerbose", url)
+    snode = rvc.addSourceVerbose([url])
+    pump(400)
+    group = rvc.nodeGroup(snode)
+    set_ui_name(group, name)
+    pump(200)
+    if log:
+        log("created", group, "media", rvc.getStringProperty(snode + ".media.movie"))
+    return group
+
+
+def add_black_source(log=None) -> str:
+    return add_movieproc_source(
+        "black",
+        "width=1280,height=720,fps=24,start=1,end=24,red=0,green=0,blue=0",
+        "Black",
+        log=log,
+    )
+
+
+def add_white_source(log=None) -> str:
+    return add_movieproc_source(
+        "solid",
+        "width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1",
+        "White",
+        log=log,
+    )
+
+
+def add_bars_source(log=None) -> str:
+    return add_movieproc_source(
+        "smptebars",
+        "width=1280,height=720,fps=24,start=1,end=24",
+        "SMPTEBars",
+        log=log,
+    )
+
+
+def add_base_source(log=None) -> str:
+    """A neutral white source, so the panel has a viewable node to render before
+    the case under test is added.
+
+    session_manager hides and destroys its dock when viewNodes() is empty, so a
+    "before" capture is only possible once some source already exists.
+    """
+    return add_movieproc_source(
+        "solid",
+        "width=1280,height=720,fps=24,start=1,end=24,red=1,green=1,blue=1",
+        "Base",
+        log=log,
+    )
+
+
+def add_colorchart_source(log=None) -> str:
+    return add_movieproc_source(
+        "srgbcolorchart",
+        "width=1280,height=720,fps=24,start=1,end=24",
+        "SRGBColorChart",
+        log=log,
+    )
+
+
+# ---------------------------------------------------------------------------
+# Tree inspection helpers
+# ---------------------------------------------------------------------------
+
+def _safe_tree_view(tree_view=None, log=None):
+    """Return a valid QTreeView, re-finding it if the given ref is stale."""
+    if tree_view is not None:
+        try:
+            _ = tree_view.model()  # validity check
+            return tree_view
+        except RuntimeError:
+            pass
+    return find_tree_view(log=log)
+
+
+def _safe_inputs_view(inputs_view=None, log=None):
+    """Return a valid QListView for inputs, re-finding if the given ref is stale."""
+    if inputs_view is not None:
+        try:
+            _ = inputs_view.model()
+            return inputs_view
+        except RuntimeError:
+            pass
+    return find_inputs_view(log=log)
+
+
+def tree_category_items(tree_view=None, log=None) -> dict[str, list[str]]:
+    """Return {category_name: [child_node_uinames]} from the tree model.
+
+    Accepts a tree_view widget or None (auto-finds it). Handles stale refs.
+    """
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return {}
+    try:
+        model = tv.model()
+    except RuntimeError:
+        return {}
+    if model is None:
+        return {}
+    root = model.invisibleRootItem()
+    result: dict[str, list[str]] = {}
+    for row in range(root.rowCount()):
+        cat_item = root.child(row, 0)
+        if cat_item is None:
+            continue
+        cat_name = cat_item.text()
+        children = []
+        for crow in range(cat_item.rowCount()):
+            child = cat_item.child(crow, 0)
+            if child is not None:
+                children.append(child.text())
+        result[cat_name] = children
+    if log:
+        log("tree categories", result)
+    return result
+
+
+def select_tree_item_for_node(tree_view, node: str, log=None) -> bool:
+    """Select the first tree item whose node data matches `node`.
+
+    Accepts a tree_view widget or None (auto-finds it). Handles stale refs.
+    """
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return False
+    try:
+        model = tv.model()
+    except RuntimeError:
+        return False
+    if model is None:
+        return False
+    root = model.invisibleRootItem()
+
+    def search(parent_item):
+        for row in range(parent_item.rowCount()):
+            item = parent_item.child(row, 0)
+            if item is None:
+                continue
+            node_data = item.data(QtCore.Qt.UserRole + 2)
+            if node_data == node:
+                try:
+                    idx = model.indexFromItem(item)
+                    tv.scrollTo(idx)
+                    # Programmatic selection first.
+                    tv.setCurrentIndex(idx)
+                    tv.selectionModel().select(
+                        idx,
+                        QtCore.QItemSelectionModel.SelectCurrent
+                        | QtCore.QItemSelectionModel.Rows,
+                    )
+                    # Also simulate a mouse click so any clicked() or pressed()
+                    # signal handlers in the installed session_manager fire.
+                    rect = tv.visualRect(idx)
+                    if rect.isValid() and rect.width() > 0:
+                        from qt_scenario_utils import QTest
+                        QTest.mouseClick(
+                            tv.viewport(),
+                            QtCore.Qt.LeftButton,
+                            QtCore.Qt.NoModifier,
+                            rect.center(),
+                        )
+                except RuntimeError:
+                    pass
+                pump(400)
+                if log:
+                    log("selected item for node", node, "row", row)
+                return True
+            if search(item):
+                return True
+        return False
+
+    return search(root)
+
+
+def the_mode(log=None):
+    """The session manager mode object, whichever implementation is loaded.
+
+    The Python port exposes it as a module global; under the Mu implementation the
+    module has no mode and this returns None, so callers that need the mode must
+    assert on it rather than assume.
+    """
+    try:
+        import session_manager
+
+        mode = session_manager.theMode()
+    except Exception as exc:
+        if log:
+            log("the_mode unavailable:", exc)
+        return None
+    if log:
+        log("the_mode ->", type(mode).__name__ if mode else None)
+    return mode
+
+
+def select_tree_items_for_nodes(tree_view, nodes, log=None) -> list:
+    """Select several tree rows at once, for the multi-selection behaviours.
+
+    select_tree_item_for_node() replaces the selection each time (it uses
+    SelectCurrent and also synthesises a plain click), so it cannot build up a
+    multi-row selection. This adds each row with Select instead and leaves the
+    click out, since a plain click would collapse the selection again.
+    """
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return []
+    try:
+        model = tv.model()
+    except RuntimeError:
+        return []
+    if model is None:
+        return []
+
+    wanted = list(nodes)
+    found = []
+    root = model.invisibleRootItem()
+
+    def walk(parent_item):
+        for row in range(parent_item.rowCount()):
+            item = parent_item.child(row, 0)
+            if item is None:
+                continue
+            node = item.data(QtCore.Qt.UserRole + 2)
+            isSubComponent = item.data(QtCore.Qt.UserRole + 4) not in (None, 0)
+            if node in wanted and not isSubComponent and node not in found:
+                idx = model.indexFromItem(item)
+                tv.scrollTo(idx)
+                tv.selectionModel().select(
+                    idx,
+                    QtCore.QItemSelectionModel.Select
+                    | QtCore.QItemSelectionModel.Rows,
+                )
+                found.append(node)
+            walk(item)
+
+    tv.selectionModel().clearSelection()
+    walk(root)
+    pump(400)
+    if log:
+        log("selected", len(found), "of", len(wanted), "requested rows:", found)
+    return found
+
+
+def get_inputs_node_list(inputs_view=None, log=None) -> list[str]:
+    """Return list of node names from the inputs view model (UserRole+2 data).
+
+    Accepts inputs_view widget or None (auto-finds it). Handles stale refs.
+    """
+    iv = _safe_inputs_view(inputs_view, log=log)
+    if iv is None:
+        return []
+    try:
+        model = iv.model()
+    except RuntimeError:
+        return []
+    if model is None:
+        return []
+    nodes = []
+    for row in range(model.rowCount(QtCore.QModelIndex())):
+        idx = model.index(row, 0, QtCore.QModelIndex())
+        node_data = model.data(idx, QtCore.Qt.UserRole + 2)
+        if node_data:
+            nodes.append(node_data)
+    if log:
+        log("inputs nodes", nodes)
+    return nodes
+
+
+def select_inputs_item(inputs_view, row_or_node, log=None) -> bool:
+    """Select a single row in the inputs view by row index or node name string.
+
+    Accepts inputs_view widget or None (auto-finds it). Handles stale refs.
+    """
+    iv = _safe_inputs_view(inputs_view, log=log)
+    if iv is None:
+        return False
+    inputs_view = iv
+    try:
+        model = inputs_view.model()
+    except RuntimeError:
+        return False
+    if model is None:
+        return False
+    if isinstance(row_or_node, str):
+        # Find the row whose UserRole+2 data matches the node name.
+        for r in range(model.rowCount(QtCore.QModelIndex())):
+            idx = model.index(r, 0, QtCore.QModelIndex())
+            if model.data(idx, QtCore.Qt.UserRole + 2) == row_or_node:
+                inputs_view.selectionModel().clearSelection()
+                inputs_view.selectionModel().select(idx, QtCore.QItemSelectionModel.Select)
+                pump(100)
+                if log:
+                    log("selected inputs row", r, "for node", row_or_node)
+                return True
+        if log:
+            log("node not found in inputs view:", row_or_node)
+        return False
+    else:
+        idx = model.index(row_or_node, 0, QtCore.QModelIndex())
+        inputs_view.selectionModel().clearSelection()
+        inputs_view.selectionModel().select(idx, QtCore.QItemSelectionModel.Select)
+        pump(100)
+        if log:
+            log("selected inputs row", row_or_node)
+        return True
+
+
+# ---------------------------------------------------------------------------
+# Wait helpers
+# ---------------------------------------------------------------------------
+
+def wait_for_preview(source_node: str = "", timeout_s: float = 10.0, log=None) -> bool:
+    """Wait for local_thumbnail_gen to produce a preview (best-effort poll).
+
+    rvc.bindToEvent / unbindEvent are not available in the installed RV Python API.
+    Falls back to a simple timeout poll.
+    """
+    start = time.time()
+    while time.time() - start < timeout_s:
+        pump(200)
+        # If loadTotal drops to 0, progressive loading is complete.
+        if rvc.loadTotal() == 0:
+            pump(400)
+            if log:
+                log("preview wait done (loadTotal=0)", round(time.time() - start, 1), "s")
+            return True
+    if log:
+        log("preview wait timeout after", timeout_s, "s")
+    return False
+
+
+# Legacy alias used by older scenarios.
+wait_for_preview_available = wait_for_preview
+
+
+# ---------------------------------------------------------------------------
+# Source preview (thumbnail / filmstrip) helpers
+# ---------------------------------------------------------------------------
+
+def meridian_clips(limit: int | None = None) -> list[str]:
+    """Every .mp4 in the fixture folder, sorted by name (stable ordering).
+
+    ``limit`` (or SM_FOLDER_CLIPS) caps how many are used so the folder-load
+    scenario has a fixed, reviewable size regardless of what else lands in the
+    fixture directory.
+    """
+    names = sorted(n for n in os.listdir(SM_MERIDIAN_DIR) if n.lower().endswith(".mp4"))
+    paths = [os.path.join(SM_MERIDIAN_DIR, n) for n in names]
+    if limit is None:
+        env = os.environ.get("SM_FOLDER_CLIPS", "")
+        limit = int(env) if env.strip().isdigit() else None
+    return paths[:limit] if limit else paths
+
+
+def add_folder_sources(clips: list[str], log=None) -> list[str]:
+    """Load a list of media files one at a time and return their source groups.
+
+    Deliberately not ``addSources()``: that queues the files through the
+    progressive loader, which never advances in a ``-pyeval`` run (verified
+    2026-08-03 — loadTotal stays at the file count and no RVSourceGroup is ever
+    created, even while the Qt event loop is pumped for 180s, and even though
+    progressiveSourceLoading() is already False). ``addSourceVerbose`` loads
+    synchronously and returns the source node, which is both deterministic and
+    fast (~0.2s per clip).
+    """
+    groups = []
+    for clip in clips:
+        snode = add_source_verbose_group(clip)
+        groups.append(snode)
+        pump(50)
+    if log:
+        log("loaded", len(groups), "sources via addSourceVerbose")
+    return groups
+
+
+def add_source_verbose_group(path: str) -> str:
+    """addSourceVerbose one media file, returning its enclosing source group."""
+    snode = rvc.addSourceVerbose([path])
+    return rvc.nodeGroup(snode)
+
+
+def thumbnail_cache_dir() -> str:
+    """local_thumbnail_gen's cache dir for this RV process.
+
+    It keys the directory on the RV pid (see local_thumbnail_gen.py), and the
+    scenario runs inside RV, so os.getpid() resolves to the same directory.
+    Counting files here is how a scenario knows generation actually finished:
+    rvio runs in worker threads, so there is no synchronous "all done" call.
+    """
+    import tempfile
+
+    return os.path.join(tempfile.gettempdir(), f"rv_thumbnails_{os.getpid()}")
+
+
+def _cache_counts(cache_dir: str) -> tuple[int, int]:
+    """(thumbnails, filmstrips) fully written in the cache.
+
+    Zero-length files are not counted: rvio is suspended mid-write while playback
+    defers generation, which leaves a partial file behind that would otherwise read
+    as a finished preview.
+    """
+    try:
+        names = os.listdir(cache_dir)
+    except OSError:
+        return (0, 0)
+
+    def done(name: str) -> bool:
+        try:
+            return os.path.getsize(os.path.join(cache_dir, name)) > 0
+        except OSError:
+            return False
+
+    thumbs = sum(1 for n in names if n.endswith("_thumbnail.jpg") and done(n))
+    strips = sum(1 for n in names if n.endswith("_filmstrip.jpg") and done(n))
+    return (thumbs, strips)
+
+
+def wait_for_all_previews(expected: int, timeout_s: float = 900.0, log=None) -> tuple[int, int]:
+    """Block until every source has a generated thumbnail *and* filmstrip.
+
+    Waiting for the filmstrips too, not just the thumbnails, is what makes the
+    capture deterministic: each completed job fires
+    ``session-manager-preview-available``, which rebuilds that row's widget. A
+    grab taken while jobs are still landing can catch a half-rebuilt panel.
+    """
+    cache_dir = thumbnail_cache_dir()
+    start = time.time()
+    thumbs = strips = 0
+    while time.time() - start < timeout_s:
+        thumbs, strips = _cache_counts(cache_dir)
+        if thumbs >= expected and strips >= expected:
+            break
+        pump(500)
+    else:
+        # Returning here would grab a panel still showing fallback icons and
+        # commit that as the golden, which pins the opposite of what is intended.
+        raise AssertionError(
+            f"preview generation did not finish within {timeout_s}s: "
+            f"{thumbs}/{expected} thumbnails, {strips}/{expected} filmstrips in {cache_dir}"
+        )
+    # Let the queued preview-available events rebuild every row before returning.
+    pump(3000)
+    if log:
+        log("preview generation finished:", thumbs, "thumbnails,", strips, "filmstrips in",
+            round(time.time() - start, 1), "s (expected", expected, "each)")
+    return (thumbs, strips)
+
+
+def trigger_menu_action(button, label, log=None):
+    """Trigger the action named `label` in a QToolButton's menu.
+
+    Scenarios drive the package the way a user does, through the real menu action,
+    because they have to run against BOTH implementations: baselines are captured
+    from Mu, where the Python module's mode object does not exist, so a scenario
+    that called mode methods could never be baselined.
+
+    Matching ignores '&' accelerators and leading/trailing space, since the menu
+    labels carry indentation for grouping.
+    """
+    menu = open_tool_button_menu(button)
+    wanted = label.replace("&", "").strip()
+    target = None
+    available = []
+    for action in menu.actions():
+        text = action.text().replace("&", "").strip()
+        available.append(text)
+        if text == wanted:
+            target = action
+            break
+    assert target is not None, (
+        "menu action %r not found; available: %s" % (label, available))
+    assert target.isEnabled(), "menu action %r is disabled" % label
+    target.trigger()
+    pump(600)
+    try:
+        menu.close()
+    except RuntimeError:
+        pass          # triggering can rebuild the panel and take the menu with it
+    pump(300)
+    if log:
+        log("triggered menu action", wanted)
+    return True
+
+
+def submenu_action_labels(button, submenu_label, log=None) -> list:
+    """The action labels inside a named submenu, for the menu-structure rows."""
+    menu = open_tool_button_menu(button)
+    wanted = submenu_label.replace("&", "").strip()
+    for action in menu.actions():
+        if action.text().replace("&", "").strip() == wanted and action.menu():
+            labels = [a.text().replace("&", "").strip() for a in action.menu().actions()]
+            if log:
+                log("submenu", wanted, "->", labels)
+            try:
+                menu.close()
+            except RuntimeError:
+                pass
+            return labels
+    labels = [a.text().replace("&", "").strip() for a in menu.actions()]
+    if log:
+        log("no submenu", wanted, "; top level:", labels)
+    try:
+        menu.close()
+    except RuntimeError:
+        pass
+    return []
+
+
+def select_tree_item_under_parent(parent_node: str, node: str, tree_view=None,
+                                  log=None) -> bool:
+    """Select `node`'s row that sits beneath `parent_node`'s row.
+
+    Which row is selected changes what Delete does: from the top-level category row
+    the node is deleted outright (E1), while from inside a folder it is only removed
+    as that folder's input when it still has other parents (E2). Selecting "the first
+    row for this node" cannot distinguish them.
+    """
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return False
+    model = tv.model()
+    if model is None:
+        return False
+
+    def find_parent(parent_item):
+        for row in range(parent_item.rowCount()):
+            item = parent_item.child(row, 0)
+            if item is None:
+                continue
+            if item.data(QtCore.Qt.UserRole + 2) == parent_node:
+                return item
+            hit = find_parent(item)
+            if hit is not None:
+                return hit
+        return None
+
+    parent_item = find_parent(model.invisibleRootItem())
+    if parent_item is None:
+        if log:
+            log("no row found for parent", parent_node)
+        return False
+
+    tv.expand(model.indexFromItem(parent_item))
+    pump(200)
+
+    for row in range(parent_item.rowCount()):
+        item = parent_item.child(row, 0)
+        if item is None:
+            continue
+        if item.data(QtCore.Qt.UserRole + 2) != node:
+            continue
+        if item.data(QtCore.Qt.UserRole + 4) not in (None, 0):
+            continue                      # a sub-component row, not the node row
+        idx = model.indexFromItem(item)
+        tv.scrollTo(idx)
+        tv.setCurrentIndex(idx)
+        tv.selectionModel().select(
+            idx,
+            QtCore.QItemSelectionModel.SelectCurrent
+            | QtCore.QItemSelectionModel.Rows,
+        )
+        pump(300)
+        if log:
+            log("selected", node, "under", parent_node, "row", row)
+        return True
+
+    if log:
+        log("no row for", node, "under", parent_node)
+    return False
+
+
+def double_click_tree_item_for_node(tree_view, node: str, log=None) -> bool:
+    """Double-click the top-level tree row for `node` (COVERAGE B2).
+
+    A double-click has to land on the row's own viewport rect, and the row must be
+    the node's own row rather than one of its sub-component children, which carry the
+    same node in UserRole+2.
+    """
+    from qt_scenario_utils import QTest
+
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return False
+    model = tv.model()
+    if model is None:
+        return False
+
+    def walk(parent_item):
+        for row in range(parent_item.rowCount()):
+            item = parent_item.child(row, 0)
+            if item is None:
+                continue
+            if (item.data(QtCore.Qt.UserRole + 2) == node
+                    and item.data(QtCore.Qt.UserRole + 4) in (None, 0)):
+                idx = model.indexFromItem(item)
+                tv.scrollTo(idx)
+                tv.setCurrentIndex(idx)
+                pump(200)
+                rect = tv.visualRect(idx)
+                if rect.isValid() and rect.width() > 0:
+                    QTest.mouseDClick(
+                        tv.viewport(),
+                        QtCore.Qt.LeftButton,
+                        QtCore.Qt.NoModifier,
+                        rect.center(),
+                    )
+                    pump(600)
+                    if log:
+                        log("double-clicked tree row for", node)
+                    return True
+            if walk(item):
+                return True
+        return False
+
+    return walk(model.invisibleRootItem())
+
+
+def double_click_inputs_item(node: str, inputs_view=None, log=None) -> bool:
+    """Double-click the inputs-panel row standing for `node` (COVERAGE G10)."""
+    from qt_scenario_utils import QTest
+
+    iv = _safe_inputs_view(inputs_view, log=log)
+    if iv is None:
+        return False
+    model = iv.model()
+    if model is None:
+        return False
+
+    for row in range(model.rowCount()):
+        item = model.item(row)
+        if item is None:
+            continue
+        if item.data(QtCore.Qt.UserRole + 2) != node:
+            continue
+        idx = model.indexFromItem(item)
+        iv.scrollTo(idx)
+        iv.setCurrentIndex(idx)
+        pump(200)
+        rect = iv.visualRect(idx)
+        if rect.isValid() and rect.width() > 0:
+            QTest.mouseDClick(
+                iv.viewport(),
+                QtCore.Qt.LeftButton,
+                QtCore.Qt.NoModifier,
+                rect.center(),
+            )
+            pump(600)
+            if log:
+                log("double-clicked inputs row for", node)
+            return True
+    if log:
+        log("no inputs row for", node)
+    return False
+
+
+def source_node_of_group(group: str):
+    """The RVFileSource/RVImageSource inside a source group."""
+    for n in rvc.nodesInGroup(group):
+        if rvc.nodeType(n) in ("RVFileSource", "RVImageSource"):
+            return n
+    return None
+
+
+def inputs_rows_with_widgets(inputs_view=None, log=None) -> int:
+    """How many inputs-panel rows carry an index widget (COVERAGE G2).
+
+    updateInputs() installs a source-row widget only for source inputs and only when
+    previews are on, so this count is the discriminant between the two states.
+    """
+    iv = _safe_inputs_view(inputs_view, log=log)
+    if iv is None:
+        return 0
+    model = iv.model()
+    if model is None:
+        return 0
+    n = 0
+    for row in range(model.rowCount()):
+        item = model.item(row)
+        if item is None:
+            continue
+        if iv.indexWidget(model.indexFromItem(item)) is not None:
+            n += 1
+    if log:
+        log("inputs rows with an index widget:", n, "of", model.rowCount())
+    return n
+
+
+def editor_tab_names(log=None) -> list:
+    """Names of the per-type editors currently loaded into the panel (COVERAGE J4).
+
+    addEditor() puts each one in as a top-level row of the editor QTreeWidget, so the
+    row labels are the observable — implementation-agnostic, unlike asking the mode.
+    """
+    from PySide6 import QtWidgets
+
+    base = find_base_widget(log=log)
+    if base is None:
+        return []
+    names = []
+    for tw in base.findChildren(QtWidgets.QTreeWidget):
+        for row in range(tw.topLevelItemCount()):
+            item = tw.topLevelItem(row)
+            if item is not None and item.text(0):
+                names.append(item.text(0))
+    if log:
+        log("editor rows:", names)
+    return names
+
+
+def tree_selected_nodes(tree_view=None, log=None) -> list:
+    """The nodes currently selected in the tree, read straight off the widget.
+
+    Implementation-agnostic stand-in for the mode's selectedNodes(): reads the
+    selection model rather than asking the mode, so it works under Mu too.
+    """
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return []
+    model = tv.model()
+    if model is None:
+        return []
+    nodes = []
+    for idx in tv.selectionModel().selectedIndexes():
+        if idx.column() != 0:
+            continue
+        item = model.itemFromIndex(idx)
+        if item is None:
+            continue
+        node = item.data(QtCore.Qt.UserRole + 2)
+        isSubComponent = item.data(QtCore.Qt.UserRole + 4) not in (None, 0)
+        if node and not isSubComponent and rvc.nodeExists(node) and node not in nodes:
+            nodes.append(node)
+    if log:
+        log("tree selection:", nodes)
+    return nodes
+
+
+def find_config_menu(log=None):
+    """Return the config QToolButton's menu (Always/Never/Restore + previews)."""
+    btn = find_config_button(log=log)
+    assert btn is not None, "configButton not found"
+    return open_tool_button_menu(btn)
+
+
+def toggle_previews(log=None) -> bool:
+    """Flip Config > Show Source Previews and return the new checked state.
+
+    Drains pending events first: a session-manager-preview-available event landing
+    while the menu is open rebuilds the panel and destroys the config button's
+    menu under us ("Internal C++ object already deleted").
+    """
+    pump(600)
+    menu = find_config_menu(log=log)
+    target = None
+    for action in menu.actions():
+        if action.text().replace("&", "") == "Show Source Previews":
+            target = action
+            break
+    assert target is not None, (
+        "Show Source Previews action not found; available: "
+        f"{[a.text() for a in menu.actions()]}"
+    )
+    assert target.isEnabled(), (
+        "Show Source Previews is disabled — RV_SESSION_MANAGER_USE_THUMBNAILS=0 "
+        "forces previews off, so this scenario cannot toggle them"
+    )
+    was = target.isChecked()
+    target.trigger()
+    pump(800)
+    menu.close()
+    pump(300)
+    now = target.isChecked()
+    assert now != was, f"toggling previews did not change the action state (still {now})"
+    if log:
+        log("previews toggled", was, "->", now)
+    return now
+
+
+def source_row_widgets(log=None) -> list[QtWidgets.QWidget]:
+    """Every per-source row widget currently in the tree ('sourceRowWidget')."""
+    app = QtWidgets.QApplication.instance()
+    rows = []
+    for w in app.allWidgets():
+        try:
+            if w.objectName() == "sourceRowWidget":
+                rows.append(w)
+        except RuntimeError:
+            continue
+    if log:
+        log("source row widgets:", len(rows))
+    return rows
+
+
+def wait_for_rows_with_thumbnails(
+    expected: int, fallback_hash: str, timeout_s: float = 300.0, log=None
+) -> int:
+    """Wait until `expected` preview labels have replaced the fallback image.
+
+    The generated files landing in the cache is not the same event as the rows
+    repainting: the mode rebuilds each row from a queued
+    session-manager-preview-available event, several event loop turns later.
+    """
+    start = time.time()
+    shown = 0
+    while time.time() - start < timeout_s:
+        shown = tree_rows_with_thumbnails(fallback_hash, log=None)
+        if shown >= expected:
+            break
+        pump(400)
+    else:
+        raise AssertionError(
+            f"only {shown}/{expected} rows replaced the fallback image within {timeout_s}s"
+        )
+    pump(1500)
+    if log:
+        log("rows showing generated frames:", shown, "after", round(time.time() - start, 1), "s")
+    return shown
+
+
+def _preview_labels_of_row(row_widget) -> list[QtWidgets.QLabel]:
+    """The visible thumbnail label of one source row.
+
+    A sourceRowWidget holds four labels: sourceNameLabel, sourceMetaLabel, and the
+    ThumbnailWidget plus FilmstripWidget inside the unnamed SourcePreviewWidget.
+    Only the thumbnail is wanted -- the name/meta labels carry text, and the
+    filmstrip is kept hidden until hover, so including any of them makes a
+    "one image per source" check meaningless.
+    """
+    found = []
+    try:
+        children = row_widget.findChildren(QtWidgets.QLabel)
+    except RuntimeError:
+        return found
+    for label in children:
+        try:
+            if label.objectName():
+                continue
+            if (label.width(), label.height()) != (SOURCE_PREVIEW_WIDTH, SOURCE_PREVIEW_HEIGHT):
+                continue
+            if not label.isVisible():
+                continue
+        except RuntimeError:
+            continue
+        found.append(label)
+    return found
+
+
+def tree_source_row_previews(tree_view=None, log=None) -> list[QtWidgets.QLabel]:
+    """Preview labels installed as index widgets in the tree, right now.
+
+    Scoped to the tree rather than QApplication.allWidgets() on purpose: toggling
+    previews rebuilds the tree, and the discarded row widgets stay reachable
+    through allWidgets() until their deleteLater runs. Counting those would make
+    "previews are off" look like "previews are on" depending on when the event
+    loop got around to the deletions.
+    """
+    tv = _safe_tree_view(tree_view, log=log)
+    if tv is None:
+        return []
+    try:
+        model = tv.model()
+    except RuntimeError:
+        return []
+    if model is None:
+        return []
+    labels: list[QtWidgets.QLabel] = []
+
+    def walk(parent_item):
+        for row in range(parent_item.rowCount()):
+            item = parent_item.child(row, 0)
+            if item is None:
+                continue
+            try:
+                widget = tv.indexWidget(model.indexFromItem(item))
+            except RuntimeError:
+                widget = None
+            if widget is not None and widget.objectName() == "sourceRowWidget":
+                labels.extend(_preview_labels_of_row(widget))
+            walk(item)
+
+    walk(model.invisibleRootItem())
+    if log:
+        log("preview labels in tree row widgets:", len(labels))
+    return labels
+
+
+def tree_row_preview_hashes(tree_view=None, log=None) -> list[str]:
+    """Content hash of every preview pixmap currently installed in the tree.
+
+    Hashing the pixels is the only reliable way to tell the fallback icon from a
+    generated frame. Pixmap size does not work: the fallback is requested at the
+    preview box size but comes back at the display's device pixel ratio (160x45*2
+    on a Retina panel), so "bigger than the box" is true for the fallback too and
+    every row looks generated before anything has been generated.
+    """
+    hashes = []
+    for label in tree_source_row_previews(tree_view, log=None):
+        try:
+            pixmap = label.pixmap()
+            if pixmap is None or pixmap.isNull():
+                continue
+            image = pixmap.toImage()
+            data = bytes(image.constBits())
+        except (RuntimeError, TypeError):
+            continue
+        hashes.append(hashlib.sha1(data).hexdigest())
+    if log:
+        log("preview pixmap hashes:", len(hashes), "distinct:", len(set(hashes)))
+    return hashes
+
+
+def fallback_preview_hash(tree_view=None, log=None) -> str:
+    """The hash shared by every row while no thumbnail has been generated yet.
+
+    Calibrated from the live panel instead of hardcoded or read off disk, so it
+    stays correct across icon changes and display scaling.
+    """
+    hashes = tree_row_preview_hashes(tree_view, log=None)
+    assert hashes, "no preview pixmaps found to calibrate the fallback hash"
+    distinct = set(hashes)
+    assert len(distinct) == 1, (
+        f"expected every row to show the same fallback image, found {len(distinct)} "
+        "distinct images — generation already produced a thumbnail, so this state "
+        "is not a usable baseline"
+    )
+    fallback = hashes[0]
+    if log:
+        log("fallback preview hash:", fallback[:12], "across", len(hashes), "labels")
+    return fallback
+
+
+def tree_rows_with_thumbnails(fallback_hash: str, tree_view=None, log=None) -> int:
+    """Preview labels showing something other than the fallback image."""
+    count = sum(1 for h in tree_row_preview_hashes(tree_view, log=None) if h != fallback_hash)
+    if log:
+        log("preview labels showing a generated frame:", count)
+    return count
+
+
+def loaded_thumbnail_count(log=None) -> int:
+    """Count source rows whose preview label is showing a real (non-fallback) image.
+
+    The fallback and a generated thumbnail are both QPixmaps on the same QLabel
+    (ThumbnailWidget.load keeps the decoded image at its native size and relies on
+    scaledContents for display), so they are told apart by size: the fallback is
+    built at exactly the preview box size, a decoded movie frame is far larger.
+    """
+    count = 0
+    for row in source_row_widgets(log=None):
+        try:
+            labels = row.findChildren(QtWidgets.QLabel)
+        except RuntimeError:
+            continue
+        for label in labels:
+            try:
+                pixmap = label.pixmap()
+            except RuntimeError:
+                continue
+            if pixmap is None or pixmap.isNull():
+                continue
+            if pixmap.width() > SOURCE_PREVIEW_WIDTH:
+                count += 1
+                break
+    if log:
+        log("rows showing a generated thumbnail:", count)
+    return count
+
+
+def wait_for_progressive_loading(
+    timeout_s: float = 600.0, log=None, use_native: bool = False
+) -> None:
+    """Wait until progressive loading completes, pumping the event loop.
+
+    Deliberately does NOT call rvc.waitForProgressiveLoading() by default. That
+    native call blocks the calling thread, so on a real display (no Xvfb) it
+    deadlocks: the loader needs the main event loop to keep running to finish, and
+    the blocking wait is what stops it running. Polling loadTotal() while pumping
+    Qt events reaches the same state without the deadlock -- this is what lets the
+    mp4 scenarios run under the GUI sanity gate instead of being skipped.
+
+    Requires two consecutive idle polls, since loadTotal() reads 0 in the gap
+    between one source finishing and the next being queued.
+    """
+    start = time.time()
+    if use_native and hasattr(rvc, "waitForProgressiveLoading"):
+        rvc.waitForProgressiveLoading()
+        pump(600)
+        if log:
+            log("progressive loading done via native wait", round(time.time() - start, 1), "s")
+        return
+    idle_polls = 0
+    while time.time() - start < timeout_s:
+        if rvc.loadTotal() == 0:
+            idle_polls += 1
+            if idle_polls >= 2:
+                break
+        else:
+            idle_polls = 0
+        pump(300)
+    else:
+        raise AssertionError(
+            f"progressive loading did not finish within {timeout_s}s "
+            f"(loadTotal={rvc.loadTotal()})"
+        )
+    pump(600)
+    if log:
+        log("progressive loading done in", round(time.time() - start, 1), "s")
+
+
+# ---------------------------------------------------------------------------
+# PNG grab helpers
+# ---------------------------------------------------------------------------
+
+def grab_widget_png(widget, out_dir: str, name: str, w: int, h: int, log=None) -> str:
+    """Grab widget at fixed logical size w×h and save to out_dir/name.png.
+
+    Hover is cleared first — see qt_scenario_utils.clear_hover(). Without it the
+    row under the physical mouse pointer paints highlighted and the PNG depends on
+    where the pointer happened to be.
+    """
+    assert widget is not None, f"grab_widget_png: widget for {name} is None"
+    widget.setFixedSize(w, h)
+    pump(300)
+    clear_hover(widget)
+    pump(50)
+    pixmap = widget.grab()
+    if pixmap.width() != w or pixmap.height() != h:
+        pixmap = pixmap.scaled(
+            w, h,
+            QtCore.Qt.IgnoreAspectRatio,
+            QtCore.Qt.FastTransformation,
+        )
+    path = os.path.join(out_dir, name)
+    #  Fixed 8-bit RGB: see qt_scenario_utils.opaque_rgb().
+    pixmap = opaque_rgb(pixmap)
+    ok = pixmap.save(path, "PNG")
+    assert ok, f"grab_widget_png: failed to save {path}"
+    if log:
+        log("saved", path, pixmap.width(), pixmap.height())
+    return path
+
+
+def grab_panel_png(out_dir: str, name: str = "panel.png", log=None) -> str:
+    """Grab the main session manager panel (base widget)."""
+    base = find_base_widget(log=log)
+    assert base is not None, "panel widget not found"
+    return grab_widget_png(base, out_dir, name, PANEL_GRAB_W, PANEL_GRAB_H, log=log)
+
+
+def grab_nav_png(out_dir: str, name: str = "nav.png", log=None) -> str:
+    """Grab the nav bar (prevButton + label + nextButton)."""
+    nav = _find_child("navPanel", QtWidgets.QWidget, log=log)
+    if nav is None:
+        dock = find_dock_widget(log=log)
+        if dock:
+            nav = dock.titleBarWidget()
+    assert nav is not None, "navPanel not found"
+    return grab_widget_png(nav, out_dir, name, NAV_GRAB_W, NAV_GRAB_H, log=log)
+
+
+def assert_images_differ(path_a: str, path_b: str, what: str = "", log=None) -> None:
+    """Fail the scenario unless two captured PNGs actually differ.
+
+    VERIFICATION.md Primary outcomes rule 2: a user-visible outcome must be pinned
+    by two viewport states that must differ. Without this check a scenario can
+    happily commit a before/after pair that shows the same thing, which pins
+    nothing and silently passes the pixel gate forever after.
+    """
+    for path in (path_a, path_b):
+        assert os.path.isfile(path), f"assert_images_differ: missing {path}"
+    with open(path_a, "rb") as fa, open(path_b, "rb") as fb:
+        same_bytes = fa.read() == fb.read()
+    if not same_bytes:
+        if log:
+            log("images differ OK:", os.path.basename(path_a), "vs", os.path.basename(path_b), what)
+        return
+    raise AssertionError(
+        f"before/after captures are identical ({os.path.basename(path_a)} == "
+        f"{os.path.basename(path_b)}) — the outcome under test is not visible: {what}"
+    )
+
+
+# ---------------------------------------------------------------------------
+# Session save
+# ---------------------------------------------------------------------------
+
+def save_session(out_dir: str, log=None) -> None:
+    path = os.path.join(out_dir, "session.rv")
+    if log:
+        log("saveSession", path)
+    rvc.saveSession(path, True, False, False)
+
+
+# ---------------------------------------------------------------------------
+# Folder-of-clips thumbnail flow (shared by the gated and full-folder scenarios)
+# ---------------------------------------------------------------------------
+
+def folder_thumbnail_flow(out_dir: str, clip_limit=None, log=None) -> None:
+    """Load a folder of mp4s and pin the fully-generated thumbnail panel.
+
+    Shared by sm_folder_thumbnails (a 12-clip subset, cheap enough to run once per
+    gate) and sm_folder_thumbnails_all (the whole folder, run once after the gates
+    pass), so the two cannot drift apart.
+
+    Both halves of the pixel pair are quiescent, which is what allows a -dmax 0
+    gate over an asynchronous pipeline:
+
+      panel_fallback.png    every row on the fallback icon, with generation held
+                            off by the session-manager-previews-disabled internal
+                            event before any source exists. Nothing has been
+                            generated at all at that point (asserted against the
+                            cache), so the grab cannot race a finishing job.
+      panel_thumbnails.png  generation re-enabled and every thumbnail *and*
+                            filmstrip written, so no further preview-available
+                            event can rebuild a row after the grab.
+
+    Two routes to the fallback state were tried and rejected. The Config > Show
+    Source Previews menu action cannot be driven here: under the memory churn of a
+    folder-sized preview run the Mu mode's config QMenu gets collected (unlike
+    _folderMenu, no member holds it -- only Qt parenting), so every use raises
+    "Internal C++ object already deleted". sm_previews_toggle covers the menu path
+    on a single source, where the mode survives it. Running playback to defer
+    generation is not deterministic either: 6 of 12 clips still finished during
+    playback, and stopping mid-clip writes a varying current frame into session.rv.
+    """
+    clips = meridian_clips()
+    if log:
+        log("fixture dir:", SM_MERIDIAN_DIR, "clips in folder:", len(clips))
+    if clip_limit is not None:
+        clips = clips[:clip_limit]
+    assert len(clips) >= 2, f"expected a folder of mp4s in {SM_MERIDIAN_DIR}, found {len(clips)}"
+    for clip in clips:
+        assert os.path.exists(clip), f"media fixture not found: {clip}"
+    if log:
+        log("loading", len(clips), "clips")
+
+    # Hold generation off before any source exists, so not one job is ever
+    # submitted and the fallback state below is exact rather than "whatever had not
+    # finished yet".
+    rvc.sendInternalEvent("session-manager-previews-disabled", "")
+    pump(300)
+
+    add_folder_sources(clips, log=log)
+    pump(1000)
+
+    source_groups = [n for n in rvc.nodes() if rvc.nodeType(n) == "RVSourceGroup"]
+    assert len(source_groups) == len(clips), (
+        f"expected {len(clips)} sources, got {len(source_groups)}"
+    )
+
+    rvc.setViewNode(source_groups[0])
+    pump(300)
+
+    activate_session_manager(log=log)
+    pump(1500)
+
+    cats = tree_category_items(None, log=log)
+    assert "SOURCES" in cats, f"SOURCES not in tree: {list(cats.keys())}"
+    assert len(cats["SOURCES"]) == len(clips), (
+        f"tree should list every clip: {len(cats['SOURCES'])} rows for {len(clips)} clips"
+    )
+
+    # --- before half: every row still on the fallback icon --------------------
+    labels = tree_source_row_previews(log=log)
+    assert len(labels) == len(clips), (
+        f"expected one preview per clip, found {len(labels)} for {len(clips)} clips"
+    )
+    pre_thumbs, pre_strips = _cache_counts(thumbnail_cache_dir())
+    assert (pre_thumbs, pre_strips) == (0, 0), (
+        f"generation was supposed to be held off, but the cache already holds "
+        f"{pre_thumbs} thumbnails and {pre_strips} filmstrips"
+    )
+    fallback_hash = fallback_preview_hash(log=log)
+    panel_fallback = grab_panel_png(out_dir, "panel_fallback.png", log=log)
+
+    # --- after half: generation re-enabled and finished for every clip --------
+    rvc.sendInternalEvent("session-manager-previews-enabled", "")
+    pump(500)
+
+    thumbs, strips = wait_for_all_previews(len(clips), log=log)
+    assert thumbs >= len(clips), f"only {thumbs}/{len(clips)} thumbnails generated"
+    assert strips >= len(clips), f"only {strips}/{len(clips)} filmstrips generated"
+    shown = wait_for_rows_with_thumbnails(len(clips), fallback_hash, log=log)
+    assert shown == len(clips), (
+        f"only {shown}/{len(clips)} rows show a generated frame (rest still fallback)"
+    )
+    # Each clip is a different scene, so identical thumbnails would mean rows are
+    # sharing one image rather than each showing its own media.
+    row_hashes = tree_row_preview_hashes(log=log)
+    assert len(set(row_hashes)) == len(clips), (
+        f"{len(clips)} clips but only {len(set(row_hashes))} distinct thumbnails"
+    )
+
+    media_exts = set()
+    for group in source_groups:
+        for node in rvc.nodesInGroup(group):
+            if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+                movie = rvc.getStringProperty(node + ".media.movie")[0]
+                media_exts.add(os.path.basename(movie).rsplit(".", 1)[-1])
+    assert media_exts == {"mp4"}, f"expected only mp4 sources, got {sorted(media_exts)}"
+
+    panel_thumbs = grab_panel_png(out_dir, "panel_thumbnails.png", log=log)
+    assert_images_differ(
+        panel_fallback, panel_thumbs,
+        "generated thumbnails replace the fallback icons", log=log,
+    )
+    save_session(out_dir, log=log)
diff --git a/src/test/golden/session_manager/scenarios/sm_add_folder_empty.py b/src/test/golden/session_manager/scenarios/sm_add_folder_empty.py
new file mode 100644
index 000000000..4e305313c
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_folder_empty.py
@@ -0,0 +1,44 @@
+"""Scenario: Folder > Empty Folder creates an empty RVFolderGroup (COVERAGE D1)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+# Add one source to populate viewNodes() before activating session_manager.
+src1 = sm.add_black_source(log=log)
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(300)
+
+# Create empty folder (mirrors newFolderSlot(which=1)).
+folder = rvc.newNode("RVFolderGroup", "")
+sm.set_ui_name(folder, "Empty Folder")
+pump(300)
+
+assert rvc.nodeExists(folder), "folder node not created"
+assert rvc.nodeType(folder) == "RVFolderGroup"
+inputs = rvc.nodeConnections(folder, False)[0]
+assert inputs == [], f"empty folder should have no inputs, got: {inputs}"
+
+ui_name = sm.get_ui_name(folder)
+log("folder ui name", ui_name, "inputs", inputs)
+assert "Folder" in ui_name, f"unexpected folder name: {ui_name}"
+
+tree_view = sm.find_tree_view(log=log)
+cats = sm.tree_category_items(None, log=log)
+assert "FOLDERS" in cats, f"FOLDERS not in tree: {list(cats.keys())}"
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_folder_from_selection.py b/src/test/golden/session_manager/scenarios/sm_add_folder_from_selection.py
new file mode 100644
index 000000000..039ef1d5d
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_folder_from_selection.py
@@ -0,0 +1,41 @@
+"""Scenario: Folder > From Selection wraps selected nodes (COVERAGE D2)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "FolderSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "FolderSrc2")
+
+folder = rvc.newNode("RVFolderGroup", "")
+rvc.setNodeInputs(folder, [src1, src2])
+sm.set_ui_name(folder, "Folder of FolderSrc1 and FolderSrc2")
+rvc.setViewNode(folder)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+assert rvc.nodeExists(folder)
+inputs = rvc.nodeConnections(folder, False)[0]
+assert src1 in inputs and src2 in inputs
+log("folder", folder, "inputs", inputs)
+
+tree_view = sm.find_tree_view(log=log)
+cats = sm.tree_category_items(None, log=log)
+assert "FOLDERS" in cats, f"FOLDERS missing: {list(cats.keys())}"
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_movieproc_bars.py b/src/test/golden/session_manager/scenarios/sm_add_movieproc_bars.py
new file mode 100644
index 000000000..2fb909ccc
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_movieproc_bars.py
@@ -0,0 +1,55 @@
+"""Scenario: Add > Color Bars… creates smptebars movieproc source (COVERAGE C11, primary #4).
+
+Before/after pair around adding the bars source pins the new SOURCES row.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+base = sm.add_base_source(log=log)
+rvc.setViewNode(base)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+sources_before = sm.tree_category_items(None, log=log).get("SOURCES", [])
+log("SOURCES rows before", len(sources_before))
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+group = sm.add_bars_source(log=log)
+rvc.setViewNode(group)
+pump(600)
+
+def find_source_node(grp):
+    for node in rvc.nodesInGroup(grp):
+        if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+            return node
+    return None
+
+snode = find_source_node(group)
+assert snode is not None
+media = rvc.getStringProperty(snode + ".media.movie")
+log("media.movie", media)
+assert "smptebars" in media[0].lower()
+assert sm.get_ui_name(group) == "SMPTEBars"
+
+cats = sm.tree_category_items(None, log=log)
+assert len(cats.get("SOURCES", [])) == len(sources_before) + 1, (
+    f"SOURCES should gain one row: {len(sources_before)} -> {len(cats.get('SOURCES', []))}"
+)
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "new SMPTEBars source row", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_movieproc_black.py b/src/test/golden/session_manager/scenarios/sm_add_movieproc_black.py
new file mode 100644
index 000000000..249a7e3d7
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_movieproc_black.py
@@ -0,0 +1,65 @@
+"""Scenario: Add > Black… creates a black movieproc source (COVERAGE C9, primary #4).
+
+A neutral base source keeps the panel alive for panel_before.png; panel_after.png
+must show the extra SOURCES row for the new "Black" movieproc.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+base = sm.add_base_source(log=log)
+rvc.setViewNode(base)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+sources_before = sm.tree_category_items(None, log=log).get("SOURCES", [])
+log("SOURCES rows before", len(sources_before))
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+group = sm.add_black_source(log=log)
+rvc.setViewNode(group)
+pump(600)
+
+assert rvc.nodeExists(group)
+assert rvc.nodeType(group) == "RVSourceGroup"
+
+def find_source_node(grp):
+    for node in rvc.nodesInGroup(grp):
+        if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+            return node
+    return None
+
+snode = find_source_node(group)
+assert snode is not None, f"no source node in group {group}"
+media = rvc.getStringProperty(snode + ".media.movie")
+log("media.movie", media)
+assert len(media) > 0
+assert "black" in media[0].lower() or "movieproc" in media[0].lower(), (
+    f"expected black movieproc URL, got: {media}"
+)
+
+assert sm.get_ui_name(group) == "Black", f"expected 'Black', got '{sm.get_ui_name(group)}'"
+
+tree_view = sm.find_tree_view(log=log)
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats
+assert len(cats["SOURCES"]) == len(sources_before) + 1, (
+    f"SOURCES should gain one row: {len(sources_before)} -> {len(cats['SOURCES'])}"
+)
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "new Black source row", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_movieproc_blank.py b/src/test/golden/session_manager/scenarios/sm_add_movieproc_blank.py
new file mode 100644
index 000000000..43fa98578
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_movieproc_blank.py
@@ -0,0 +1,46 @@
+"""Scenario: a blank movieproc source (COVERAGE C14).
+
+Follows the same shape as the other movieproc scenarios: the source is created through
+addSourceVerbose with the URL the Add > Blank dialog builds, so the outcome is pinned
+without depending on a modal dialog. C15 (the dialog's FPS defaulting from
+General/fps) is covered by unit/test_mode.py instead — a modal has no deterministic
+golden, per VERIFICATION.md.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+group = sm.add_movieproc_source(
+    "blank", "width=1280,height=720,fps=24,start=1,end=24", "Blank", log=log)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+src = sm.source_node_of_group(group)
+assert src is not None, "no source node inside %s" % group
+media = rvc.getStringProperty(src + ".media.movie")[0]
+log("media:", media)
+
+assert media.startswith("blank,"), "expected a blank movieproc, got %r" % media
+assert media.endswith(".movieproc"), "expected a movieproc URL, got %r" % media
+assert rvc.nodeType(group) == "RVSourceGroup"
+assert sm.get_ui_name(group) == "Blank", "name should be Blank, got %r" % sm.get_ui_name(group)
+
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats, "SOURCES missing: %s" % list(cats)
+log("SOURCES rows:", cats["SOURCES"])
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_movieproc_colorchart.py b/src/test/golden/session_manager/scenarios/sm_add_movieproc_colorchart.py
new file mode 100644
index 000000000..8202b4e9d
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_movieproc_colorchart.py
@@ -0,0 +1,70 @@
+"""Scenario: Add > SRGB + ACES Color Chart creates colorchart movieproc sources (COVERAGE C12, C13, primary #4).
+
+Before/after pair around adding both chart sources: SOURCES must gain two rows.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+base = sm.add_base_source(log=log)
+rvc.setViewNode(base)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+sources_before = sm.tree_category_items(None, log=log).get("SOURCES", [])
+log("SOURCES rows before", len(sources_before))
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+srgb_group = sm.add_colorchart_source(log=log)
+pump(300)
+
+aces_group = sm.add_movieproc_source(
+    "acescolorchart",
+    "width=1280,height=720,fps=24,start=1,end=24",
+    "ACESColorChart",
+    log=log,
+)
+rvc.setViewNode(srgb_group)
+pump(600)
+
+def find_source_node(grp):
+    for node in rvc.nodesInGroup(grp):
+        if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+            return node
+    return None
+
+snode_srgb = find_source_node(srgb_group)
+snode_aces = find_source_node(aces_group)
+assert snode_srgb is not None
+assert snode_aces is not None
+
+media_srgb = rvc.getStringProperty(snode_srgb + ".media.movie")
+media_aces = rvc.getStringProperty(snode_aces + ".media.movie")
+log("srgb media", media_srgb)
+log("aces media", media_aces)
+assert "srgbcolorchart" in media_srgb[0].lower(), f"expected srgbcolorchart, got: {media_srgb}"
+assert "acescolorchart" in media_aces[0].lower(), f"expected acescolorchart, got: {media_aces}"
+
+tree_view = sm.find_tree_view(log=log)
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats
+assert len(cats["SOURCES"]) == len(sources_before) + 2, (
+    f"SOURCES should gain two rows: {len(sources_before)} -> {len(cats['SOURCES'])}"
+)
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "two new colour-chart rows", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_movieproc_solid.py b/src/test/golden/session_manager/scenarios/sm_add_movieproc_solid.py
new file mode 100644
index 000000000..84fdc87e1
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_movieproc_solid.py
@@ -0,0 +1,65 @@
+"""Scenario: Add > Color… creates a solid-color movieproc source (COVERAGE C10, C16, primary #4).
+
+Before/after pair around adding the chosen-colour source, so the new SOURCES row
+is pinned in pixels and not just in the graph.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+base = sm.add_base_source(log=log)
+rvc.setViewNode(base)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+sources_before = sm.tree_category_items(None, log=log).get("SOURCES", [])
+log("SOURCES rows before", len(sources_before))
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+group = sm.add_movieproc_source(
+    "solid",
+    "width=1280,height=720,fps=24,start=1,end=24,red=0.502,green=0.502,blue=0.502",
+    "SolidColor",
+    log=log,
+)
+rvc.setViewNode(group)
+pump(600)
+
+assert rvc.nodeExists(group)
+assert rvc.nodeType(group) == "RVSourceGroup"
+
+def find_source_node(grp):
+    for node in rvc.nodesInGroup(grp):
+        if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+            return node
+    return None
+
+snode = find_source_node(group)
+assert snode is not None
+media = rvc.getStringProperty(snode + ".media.movie")
+log("media.movie", media)
+assert "solid" in media[0].lower()
+assert "red=0.502" in media[0], f"chosen colour not in media URL: {media[0]}"
+assert sm.get_ui_name(group) == "SolidColor"
+
+cats = sm.tree_category_items(None, log=log)
+assert len(cats.get("SOURCES", [])) == len(sources_before) + 1, (
+    f"SOURCES should gain one row: {len(sources_before)} -> {len(cats.get('SOURCES', []))}"
+)
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "new SolidColor source row", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_node_types.py b/src/test/golden/session_manager/scenarios/sm_add_node_types.py
new file mode 100644
index 000000000..319f0441b
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_node_types.py
@@ -0,0 +1,61 @@
+"""Scenario: Add menu creates Layout / Retime / Color / OCIO (COVERAGE C4, C5, C6, C7).\n\nDriven through the real Add-button menu actions rather than the mode's slots, so the\nmenu wiring is pinned too and the scenario runs against either implementation."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "NtSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "NtSrc2")
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+add = sm.find_add_button(log=log)
+assert add is not None, "addButton not found"
+
+WANTED = {"Layout": "RVLayoutGroup", "Retime": "RVRetimeGroup", "Color": "RVColor"}
+created = {}
+
+for label, nodeType in WANTED.items():
+    sm.select_tree_item_for_node(None, src1, log=log)
+    pump(150)
+    before = set(rvc.nodes())
+    sm.trigger_menu_action(add, label, log=log)
+    made = [n for n in sorted(set(rvc.nodes()) - before) if rvc.nodeType(n) == nodeType]
+    assert made, "Add > %s created no %s (new: %s)" % (
+        label, nodeType, sorted(set(rvc.nodes()) - before))
+    created[nodeType] = made[0]
+    log("Add >", label, "->", made[0], "uiName", sm.get_ui_name(made[0]))
+
+for nodeType, node in created.items():
+    assert rvc.nodeExists(node) and rvc.nodeType(node) == nodeType
+
+#
+#  C7, Add > OCIO, is deliberately NOT exercised here. Both implementations pass
+#  "RVOCIO" to newNode and this build has no such node type (it ships OCIO /
+#  OCIODisplay / OCIOFile / OCIOLook), so the action raises in either one — a
+#  pre-existing package defect, not a port regression.
+#
+#  It cannot be pinned by a golden either: the raise produces a traceback naming
+#  session_manager.py frames under Python and Mu frames under Mu, so gate 0 sees a
+#  new signature whichever implementation captured the baseline. Recorded as a known
+#  defect in COVERAGE.md instead.
+#
+assert "RVOCIO" not in rvc.nodeTypes(True), (
+    "RVOCIO exists in this build now — Add > OCIO can work, so C7 should be pinned "
+    "properly and this note removed")
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_sequence.py b/src/test/golden/session_manager/scenarios/sm_add_sequence.py
new file mode 100644
index 000000000..b6db8d510
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_sequence.py
@@ -0,0 +1,69 @@
+"""Scenario: Add > Sequence wraps selected sources (COVERAGE C1, G1, G3, primary #5).
+
+panel_before.png is the panel with the two loose sources; panel_after.png is
+taken once the sequence exists and is the active view, so the pair pins both the
+new SEQUENCES row and the inputs panel listing the wrapped sources.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+# Add sources BEFORE activating.
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "SeqSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "SeqSrc2")
+
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+seqs_before = sm.tree_category_items(None, log=log).get("SEQUENCES", [])
+log("SEQUENCES rows before", seqs_before)
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "Sequence of SeqSrc1 and SeqSrc2")
+rvc.setViewNode(seq)
+pump(600)
+
+log("sequence node", seq)
+log("sequence inputs", rvc.nodeConnections(seq, False)[0])
+
+assert rvc.nodeExists(seq), "RVSequenceGroup not created"
+assert rvc.nodeType(seq) == "RVSequenceGroup", f"wrong type: {rvc.nodeType(seq)}"
+inputs = rvc.nodeConnections(seq, False)[0]
+assert src1 in inputs, f"{src1} not in sequence inputs: {inputs}"
+assert src2 in inputs, f"{src2} not in sequence inputs: {inputs}"
+
+tree_view = sm.find_tree_view(log=log)
+cats = sm.tree_category_items(None, log=log)
+assert "SEQUENCES" in cats, f"SEQUENCES not in tree: {list(cats.keys())}"
+assert len(cats["SEQUENCES"]) == len(seqs_before) + 1, (
+    f"SEQUENCES should gain one row: {seqs_before} -> {cats['SEQUENCES']}"
+)
+
+inputs_view = sm.find_inputs_view(log=log)
+assert inputs_view is not None, "inputs view not found"
+inp_nodes = sm.get_inputs_node_list(None, log=log)
+log("inputs panel nodes", inp_nodes)
+assert src1 in inp_nodes, f"{src1} not in inputs panel: {inp_nodes}"
+assert src2 in inp_nodes, f"{src2} not in inputs panel: {inp_nodes}"
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "new sequence row + inputs list", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_stack.py b/src/test/golden/session_manager/scenarios/sm_add_stack.py
new file mode 100644
index 000000000..9d6c211eb
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_stack.py
@@ -0,0 +1,57 @@
+"""Scenario: Add > Stack wraps selected sources (COVERAGE C2, primary #5).
+
+Before/after pair: loose sources only, then the stack exists and is the active
+view, so the new STACKS row is the pixel discriminant.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "StkSrc1")
+src2 = sm.add_white_source(log=log)
+sm.set_ui_name(src2, "StkSrc2")
+
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+stacks_before = sm.tree_category_items(None, log=log).get("STACKS", [])
+log("STACKS rows before", stacks_before)
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+stk = rvc.newNode("RVStackGroup", "")
+rvc.setNodeInputs(stk, [src1, src2])
+sm.set_ui_name(stk, "Stack of StkSrc1 and StkSrc2")
+rvc.setViewNode(stk)
+pump(600)
+
+assert rvc.nodeExists(stk)
+assert rvc.nodeType(stk) == "RVStackGroup"
+inputs = rvc.nodeConnections(stk, False)[0]
+assert src1 in inputs and src2 in inputs
+
+tree_view = sm.find_tree_view(log=log)
+cats = sm.tree_category_items(None, log=log)
+assert "STACKS" in cats, f"STACKS not in tree: {list(cats.keys())}"
+assert len(cats["STACKS"]) == len(stacks_before) + 1, (
+    f"STACKS should gain one row: {stacks_before} -> {cats['STACKS']}"
+)
+log("stack created", stk, "inputs", inputs)
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "new stack row", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_add_switch.py b/src/test/golden/session_manager/scenarios/sm_add_switch.py
new file mode 100644
index 000000000..7e8790e88
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_add_switch.py
@@ -0,0 +1,38 @@
+"""Scenario: Add > Switch creates RVSwitchGroup (COVERAGE C3)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "SwSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "SwSrc2")
+
+sw = rvc.newNode("RVSwitchGroup", "")
+rvc.setNodeInputs(sw, [src1, src2])
+sm.set_ui_name(sw, "Switch of SwSrc1 and SwSrc2")
+rvc.setViewNode(sw)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+assert rvc.nodeExists(sw)
+assert rvc.nodeType(sw) == "RVSwitchGroup"
+inputs = rvc.nodeConnections(sw, False)[0]
+assert src1 in inputs
+log("switch created", sw, "inputs", inputs)
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_delete_folder.py b/src/test/golden/session_manager/scenarios/sm_delete_folder.py
new file mode 100644
index 000000000..17df8fa50
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_delete_folder.py
@@ -0,0 +1,46 @@
+"""Scenario: delete folder via delete button (COVERAGE E3, E4)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, click_button
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "FolderChild")
+folder = rvc.newNode("RVFolderGroup", "")
+sm.set_ui_name(folder, "DeleteMe")
+rvc.setNodeInputs(folder, [src1])
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None
+
+ok = sm.select_tree_item_for_node(None, folder, log=log)
+assert ok, f"could not select folder {folder}"
+pump(300)
+
+del_btn = sm.find_delete_button(log=log)
+assert del_btn is not None
+click_button(del_btn, settle_ms=600)
+pump(600)
+
+assert not rvc.nodeExists(folder), f"folder {folder} should be deleted"
+# Child source should still exist (folder deletion only removes the container).
+assert rvc.nodeExists(src1), f"source {src1} should survive folder deletion"
+log("folder deleted", folder, "child still exists:", rvc.nodeExists(src1))
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_delete_in_folder.py b/src/test/golden/session_manager/scenarios/sm_delete_in_folder.py
new file mode 100644
index 000000000..3a96966aa
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_delete_in_folder.py
@@ -0,0 +1,80 @@
+"""Scenario: Delete on a node that is in more than one folder removes the input
+(COVERAGE E2).
+
+The rule is narrower than "has other parents". session_manager.mu.in's
+deleteViewableSlot counts how many of the node's *outputs are RVFolderGroups* and only
+calls removeInput when the selected row's parent is a folder AND that count is > 1:
+
+    if (parentType == "RVFolderGroup" && nfolders > 1) removeInput(parent, node);
+    else                                               deleteNode(node);
+
+So a source in one folder plus a sequence is still deleted outright. Both arms are
+pinned here, because the discriminant is the whole point of the row.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+# shared: lives in two folders     |     lone: one folder plus a sequence
+shared = sm.add_black_source(log=log)
+sm.set_ui_name(shared, "DfShared")
+lone = sm.add_bars_source(log=log)
+sm.set_ui_name(lone, "DfLone")
+
+folderA = rvc.newNode("RVFolderGroup", "")
+rvc.setNodeInputs(folderA, [shared, lone])
+sm.set_ui_name(folderA, "DfFolderA")
+
+folderB = rvc.newNode("RVFolderGroup", "")
+rvc.setNodeInputs(folderB, [shared])
+sm.set_ui_name(folderB, "DfFolderB")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [lone])
+sm.set_ui_name(seq, "DfSequence")
+
+rvc.setViewNode(folderA)
+pump(200)
+sm.activate_session_manager(log=log)
+pump(400)
+
+delete = sm.find_delete_button(log=log)
+assert delete is not None, "deleteButton not found"
+
+# --- arm 1: two folders -> removeInput, the node survives ------------------------
+assert sm.select_tree_item_under_parent(folderA, shared, log=log), (
+    "could not select %s under %s" % (shared, folderA))
+delete.click()
+pump(600)
+
+log("shared exists:", rvc.nodeExists(shared))
+log("folderA inputs:", rvc.nodeConnections(folderA, False)[0])
+log("folderB inputs:", rvc.nodeConnections(folderB, False)[0])
+assert rvc.nodeExists(shared), "a node in two folders must not be deleted outright"
+assert shared not in rvc.nodeConnections(folderA, False)[0], "it must leave folderA"
+assert shared in rvc.nodeConnections(folderB, False)[0], "folderB must still hold it"
+
+# --- arm 2: one folder plus a sequence -> deleted outright -----------------------
+assert sm.select_tree_item_under_parent(folderA, lone, log=log), (
+    "could not select %s under %s" % (lone, folderA))
+delete.click()
+pump(600)
+
+log("lone exists:", rvc.nodeExists(lone))
+log("sequence inputs:", rvc.nodeConnections(seq, False)[0])
+assert not rvc.nodeExists(lone), (
+    "only one folder holds it, so deleteViewableSlot deletes the node")
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_delete_multi.py b/src/test/golden/session_manager/scenarios/sm_delete_multi.py
new file mode 100644
index 000000000..2b2c0b999
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_delete_multi.py
@@ -0,0 +1,41 @@
+"""Scenario: the Delete button removes every selected row (COVERAGE E5)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+names = []
+for i in range(3):
+    n = sm.add_black_source(log=log)
+    sm.set_ui_name(n, "DmSrc%d" % i)
+    names.append(n)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+sm.select_tree_items_for_nodes(None, names[:2], log=log)
+selected = sm.tree_selected_nodes(log=log)
+assert len(selected) == 2, "expected a two-row selection, got %s" % (selected,)
+
+delete = sm.find_delete_button(log=log)
+assert delete is not None, "deleteButton not found"
+delete.click()
+pump(600)
+
+gone = [n for n in names[:2] if not rvc.nodeExists(n)]
+assert len(gone) == 2, "both selected sources should be gone, missing: %s" % (gone,)
+assert rvc.nodeExists(names[2]), "the unselected source must survive"
+log("remaining:", [n for n in names if rvc.nodeExists(n)])
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_delete_source.py b/src/test/golden/session_manager/scenarios/sm_delete_source.py
new file mode 100644
index 000000000..067e13d77
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_delete_source.py
@@ -0,0 +1,62 @@
+"""Scenario: delete source via delete button (COVERAGE E1, M2, primary #3).
+
+panel_before.png has both sources listed under SOURCES; panel_after.png is taken
+after the real delete button removes "Goner", so the pair pins the row actually
+disappearing rather than just the node leaving the graph.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, click_button
+
+src_keep = sm.add_black_source(log=log)
+sm.set_ui_name(src_keep, "Keeper")
+src_del = sm.add_bars_source(log=log)
+sm.set_ui_name(src_del, "Goner")
+rvc.setViewNode(src_keep)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None
+
+ok = sm.select_tree_item_for_node(None, src_del, log=log)
+assert ok, f"could not select {src_del}"
+pump(300)
+
+del_btn = sm.find_delete_button(log=log)
+assert del_btn is not None, "deleteButton not found"
+assert del_btn.isEnabled(), "delete button should be enabled when node is selected"
+
+sources_before = sm.tree_category_items(None, log=log).get("SOURCES", [])
+log("SOURCES rows before delete:", len(sources_before))
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+click_button(del_btn, settle_ms=600)
+pump(600)
+
+assert not rvc.nodeExists(src_del), f"{src_del} should be deleted after clicking delete"
+assert rvc.nodeExists(src_keep), f"{src_keep} should still exist"
+log("deleted", src_del, "Keeper still exists:", rvc.nodeExists(src_keep))
+
+sources_after = sm.tree_category_items(None, log=log).get("SOURCES", [])
+log("SOURCES rows after delete:", len(sources_after))
+assert len(sources_after) == len(sources_before) - 1, (
+    f"tree should lose exactly one SOURCES row: {len(sources_before)} -> {len(sources_after)}"
+)
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "deleted row disappears", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_editor_tab_per_type.py b/src/test/golden/session_manager/scenarios/sm_editor_tab_per_type.py
new file mode 100644
index 000000000..5ae48bfcc
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_editor_tab_per_type.py
@@ -0,0 +1,65 @@
+"""Scenario: the per-type editor tab loads on a view change (COVERAGE J4).
+
+Selecting a node fires view-edit-mode-activated, which the matching sibling edit mode
+answers by building its .ui and calling addEditor(). Nothing in the session manager
+asks for this — it is the mode manager activating the per-type mode — so the
+discriminant is the editor tree gaining a named editor for the new view type.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "J4Src1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "J4Src2")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "J4Sequence")
+
+stack = rvc.newNode("RVStackGroup", "")
+rvc.setNodeInputs(stack, [src1, src2])
+sm.set_ui_name(stack, "J4Stack")
+
+rvc.setViewNode(src1)
+pump(200)
+sm.activate_session_manager(log=log)
+pump(600)
+
+editorsForSource = sm.editor_tab_names(log=log)
+log("editors with a source in view:", editorsForSource)
+sm.grab_panel_png(out_dir, "panel_source.png", log=log)
+
+rvc.setViewNode(seq)
+pump(1200)
+editorsForSequence = sm.editor_tab_names(log=log)
+log("editors with a sequence in view:", editorsForSequence)
+sm.grab_panel_png(out_dir, "panel_sequence.png", log=log)
+
+rvc.setViewNode(stack)
+pump(1200)
+editorsForStack = sm.editor_tab_names(log=log)
+log("editors with a stack in view:", editorsForStack)
+
+assert editorsForSequence != editorsForSource or editorsForStack != editorsForSequence, (
+    "view-edit-mode-activated must load a per-type editor (J4); editors never "
+    "changed: source=%s sequence=%s stack=%s"
+    % (editorsForSource, editorsForSequence, editorsForStack))
+assert any("Sequence" in n for n in editorsForSequence) or \
+       any("Stack" in n for n in editorsForStack), (
+    "expected a Sequence or Stack editor to appear; got %s / %s"
+    % (editorsForSequence, editorsForStack))
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_folder_from_copy.py b/src/test/golden/session_manager/scenarios/sm_folder_from_copy.py
new file mode 100644
index 000000000..00ae05953
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_folder_from_copy.py
@@ -0,0 +1,50 @@
+"""Scenario: Folder > From Copy of Selection (COVERAGE D3).\n\nThe copy variant wraps copies, so the original parent's connections stay intact —\nthat is the discriminant against From Selection, which moves the nodes out."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "FcSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "FcSrc2")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "FcSequence")
+rvc.setViewNode(seq)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+before = list(rvc.nodeConnections(seq, False)[0])
+log("sequence inputs before:", before)
+
+sm.select_tree_items_for_nodes(None, [src1, src2], log=log)
+folderBtn = sm.find_folder_button(log=log)
+assert folderBtn is not None, "folderButton not found"
+sm.trigger_menu_action(folderBtn, "From Copy of Selection", log=log)
+
+folders = [n for n in rvc.nodes() if rvc.nodeType(n) == "RVFolderGroup"]
+assert folders, "no folder created"
+folder = folders[0]
+log("folder", folder, "inputs", rvc.nodeConnections(folder, False)[0])
+
+after = list(rvc.nodeConnections(seq, False)[0])
+assert after == before, (
+    "From Copy must not disturb the original parent: %s -> %s" % (before, after))
+assert rvc.nodeConnections(folder, False)[0], "the folder must wrap something"
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_folder_thumbnails.py b/src/test/golden/session_manager/scenarios/sm_folder_thumbnails.py
new file mode 100644
index 000000000..2e98fd9bf
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_folder_thumbnails.py
@@ -0,0 +1,21 @@
+"""Scenario: load a folder of mp4s and pin the fully-generated thumbnail panel
+(COVERAGE I2, I5, I7, I8, I9, M7, primary #8).
+
+Loads the first SM_FOLDER_CLIP_COUNT clips (12) rather than the whole fixture
+folder: generation is two rvio jobs per clip at MAX_WORKERS=2 and this scenario
+runs once per gate, so the full 83-clip folder is covered separately by
+run_folder_thumbnails_all.sh once the gates pass. Both use the same flow.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+sm.folder_thumbnail_flow(out_dir, clip_limit=sm.SM_FOLDER_CLIP_COUNT, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_folder_thumbnails_all.py b/src/test/golden/session_manager/scenarios/sm_folder_thumbnails_all.py
new file mode 100644
index 000000000..3d0b0692f
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_folder_thumbnails_all.py
@@ -0,0 +1,20 @@
+"""Scenario: load *every* clip in the fixture folder and pin the fully-generated
+thumbnail panel (COVERAGE I2, I5, I7, I8, I9, M7, primary #8 at full scale).
+
+Excluded from the gated suite by SKIP_IDS because 83 clips means 166 rvio jobs at
+MAX_WORKERS=2; run_folder_thumbnails_all.sh runs it as a mandatory check after all
+six gates pass. Same flow as sm_folder_thumbnails, no clip limit.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+sm.folder_thumbnail_flow(out_dir, clip_limit=None, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_inputs_delete.py b/src/test/golden/session_manager/scenarios/sm_inputs_delete.py
new file mode 100644
index 000000000..9514af06d
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_inputs_delete.py
@@ -0,0 +1,51 @@
+"""Scenario: delete-from-inputs removes an input from a node (COVERAGE G6, G7)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, click_button
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "Keep")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "Remove")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "InputDelSeq")
+rvc.setViewNode(seq)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+inputs_view = sm.find_inputs_view(log=log)
+assert inputs_view is not None
+
+sm.select_inputs_tab(log=log)
+sm.select_inputs_item(None, src2, log=log)
+pump(200)
+
+inputs_del_btn = sm.find_inputs_delete_button(log=log)
+assert inputs_del_btn is not None, "inputsDeleteButton not found"
+click_button(inputs_del_btn, settle_ms=400)
+pump(400)
+
+remaining = rvc.nodeConnections(seq, False)[0]
+log("inputs after delete", remaining)
+assert src2 not in remaining, f"{src2} should be removed from inputs"
+assert src1 in remaining, f"{src1} should remain in inputs"
+
+assert rvc.nodeExists(src2), "source node itself should not be deleted"
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_inputs_disabled_for_source.py b/src/test/golden/session_manager/scenarios/sm_inputs_disabled_for_source.py
new file mode 100644
index 000000000..bfc50759a
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_inputs_disabled_for_source.py
@@ -0,0 +1,53 @@
+"""Scenario: the inputs panel is disabled for source nodes (COVERAGE G9).\n\nA source has no editable inputs, so selecting one must leave the inputs view\ndisabled, while a sequence re-enables it. Both states are captured as PNGs so the\ndifference is pinned visually as well as by the widget flag."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "IdSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "IdSrc2")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "IdSequence")
+rvc.setViewNode(seq)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+sm.select_inputs_tab(log=log)
+
+iv = sm.find_inputs_view(log=log)
+assert iv is not None, "inputs view not found"
+
+# A sequence has editable inputs.
+rvc.setViewNode(seq)
+pump(600)
+enabledForSequence = iv.isEnabled()
+log("inputs view enabled for sequence:", enabledForSequence)
+sm.grab_panel_png(out_dir, "panel_sequence.png", log=log)
+
+# A source does not.
+rvc.setViewNode(src1)
+pump(600)
+enabledForSource = iv.isEnabled()
+log("inputs view enabled for source:", enabledForSource)
+sm.grab_panel_png(out_dir, "panel_source.png", log=log)
+
+assert enabledForSequence, "the inputs panel should be usable for a sequence"
+assert not enabledForSource, (
+    "the inputs panel must be disabled for an RVSourceGroup (G9)")
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_inputs_preview_widget.py b/src/test/golden/session_manager/scenarios/sm_inputs_preview_widget.py
new file mode 100644
index 000000000..9a6af5e9c
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_inputs_preview_widget.py
@@ -0,0 +1,63 @@
+"""Scenario: source rows in the inputs panel carry a preview widget (COVERAGE G2).
+
+With previews on, updateInputs() blanks the row text and installs a source-row widget
+(thumbnail + name + meta) as the index widget; with previews off the row is plain text.
+Both states are asserted and captured, so the discriminant is the presence of the
+widget rather than just a repaint.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "G2Src1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "G2Src2")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "G2Sequence")
+rvc.setViewNode(seq)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(600)
+sm.select_inputs_tab(log=log)
+pump(400)
+
+withPreviews = sm.inputs_rows_with_widgets(log=log)
+log("input rows carrying a preview widget:", withPreviews)
+sm.grab_panel_png(out_dir, "panel_previews_on.png", log=log)
+assert withPreviews > 0, (
+    "source inputs should carry a preview widget when previews are enabled (G2)")
+
+#
+#  The previews-off half is deliberately not driven here. Flipping the setting means
+#  opening the config menu, and a session-manager-preview-available event landing
+#  while it is open rebuilds the panel and destroys the menu — "Internal C++ object
+#  already deleted", reproduced on Mu. sm_previews_toggle already pins the toggle
+#  itself (I1, I2, I6, I9); this row is specifically "with previews enabled, source
+#  inputs show a preview widget", so the other half of the same code path is asserted
+#  instead: the row text is blanked when the widget takes over.
+#
+iv = sm.find_inputs_view(log=log)
+model = iv.model()
+blanked = [model.item(r).text() for r in range(model.rowCount())
+           if iv.indexWidget(model.indexFromItem(model.item(r))) is not None]
+log("text of rows carrying a widget:", blanked)
+assert blanked and all(t == "" for t in blanked), (
+    "a row that carries a preview widget must have its text blanked (G2); got %s"
+    % (blanked,))
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_inputs_reorder.py b/src/test/golden/session_manager/scenarios/sm_inputs_reorder.py
new file mode 100644
index 000000000..5722a7fba
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_inputs_reorder.py
@@ -0,0 +1,82 @@
+"""Scenario: order-up/down buttons reorder inputs (COVERAGE G4, G5, primary #7).
+
+The inputs panel row order is the visible outcome, so panel_before.png is taken
+with the original order and panel_after.png after Input2 has been moved up.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, click_button
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "Input1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "Input2")
+src3 = sm.add_white_source(log=log)
+sm.set_ui_name(src3, "Input3")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2, src3])
+sm.set_ui_name(seq, "ReorderSeq")
+rvc.setViewNode(seq)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+inputs_view = sm.find_inputs_view(log=log)
+assert inputs_view is not None, "inputs view not found"
+
+orig = sm.get_inputs_node_list(None, log=log)
+log("original inputs", orig)
+assert orig == [src1, src2, src3], f"unexpected initial order: {orig}"
+orig_conn = rvc.nodeConnections(seq, False)[0]
+assert orig_conn == [src1, src2, src3], f"unexpected initial connections: {orig_conn}"
+
+sm.select_inputs_tab(log=log)
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+# Select src2 and move it up.
+sm.select_inputs_item(None, src2, log=log)
+pump(200)
+
+up_btn = sm.find_order_up_button(log=log)
+assert up_btn is not None
+click_button(up_btn, settle_ms=400)
+pump(400)
+
+after_up = sm.get_inputs_node_list(None, log=log)
+log("after move-up", after_up)
+new_inputs = rvc.nodeConnections(seq, False)[0]
+log("node connections after up", new_inputs)
+assert new_inputs.index(src2) < new_inputs.index(src1), (
+    f"src2 should be before src1 after move-up: {new_inputs}"
+)
+panel_after_up = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after_up, "inputs rows reordered", log=log)
+
+down_btn = sm.find_order_down_button(log=log)
+assert down_btn is not None
+click_button(down_btn, settle_ms=400)
+pump(400)
+
+after_down = sm.get_inputs_node_list(None, log=log)
+log("after move-down", after_down)
+final_inputs = rvc.nodeConnections(seq, False)[0]
+log("node connections after down", final_inputs)
+assert final_inputs == orig_conn, (
+    f"move-down should restore the original order: {orig_conn} -> {final_inputs}"
+)
+
+sm.grab_panel_png(out_dir, "panel_restored.png", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_inputs_sort.py b/src/test/golden/session_manager/scenarios/sm_inputs_sort.py
new file mode 100644
index 000000000..a34ced2df
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_inputs_sort.py
@@ -0,0 +1,70 @@
+"""Scenario: sort-asc/sort-desc buttons sort inputs alphabetically (COVERAGE G6, G7, G8, primary #7).
+
+Three captures pin the visible order: unsorted, A-Z, then Z-A. A-Z and Z-A must
+differ from each other, otherwise the sort direction is not actually pinned.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, click_button
+
+src_c = sm.add_black_source(log=log)
+sm.set_ui_name(src_c, "Charlie")
+src_a = sm.add_bars_source(log=log)
+sm.set_ui_name(src_a, "Alpha")
+src_b = sm.add_white_source(log=log)
+sm.set_ui_name(src_b, "Bravo")
+
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src_c, src_a, src_b])
+sm.set_ui_name(seq, "SortSeq")
+rvc.setViewNode(seq)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+inputs_view = sm.find_inputs_view(log=log)
+assert inputs_view is not None
+
+sm.select_inputs_tab(log=log)
+unsorted_names = [sm.get_ui_name(n) for n in rvc.nodeConnections(seq, False)[0]]
+log("unsorted order", unsorted_names)
+assert unsorted_names == ["Charlie", "Alpha", "Bravo"], f"unexpected start: {unsorted_names}"
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+asc_btn = sm.find_sort_asc_button(log=log)
+assert asc_btn is not None, "sortAscButton not found"
+click_button(asc_btn, settle_ms=400)
+pump(400)
+
+asc_order = rvc.nodeConnections(seq, False)[0]
+log("asc order", [sm.get_ui_name(n) for n in asc_order])
+names_asc = [sm.get_ui_name(n) for n in asc_order]
+assert names_asc == sorted(names_asc), f"expected ascending sort, got: {names_asc}"
+panel_asc = sm.grab_panel_png(out_dir, "panel_asc.png", log=log)
+sm.assert_images_differ(panel_before, panel_asc, "inputs sorted A-Z", log=log)
+
+desc_btn = sm.find_sort_desc_button(log=log)
+assert desc_btn is not None
+click_button(desc_btn, settle_ms=400)
+pump(400)
+
+desc_order = rvc.nodeConnections(seq, False)[0]
+names_desc = [sm.get_ui_name(n) for n in desc_order]
+log("desc order", names_desc)
+assert names_desc == sorted(names_desc, reverse=True), f"expected descending, got: {names_desc}"
+
+panel_desc = sm.grab_panel_png(out_dir, "panel_desc.png", log=log)
+sm.assert_images_differ(panel_asc, panel_desc, "inputs sorted Z-A", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_media_add_sources.py b/src/test/golden/session_manager/scenarios/sm_media_add_sources.py
new file mode 100644
index 000000000..07986fc63
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_media_add_sources.py
@@ -0,0 +1,53 @@
+"""Scenario: add multiple different media sources and verify tree structure (COVERAGE A1–A4, C9–C11)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+# Add all movieproc sources.
+black_grp = sm.add_black_source(log=log)
+bars_grp = sm.add_bars_source(log=log)
+white_grp = sm.add_white_source(log=log)
+
+# Load one real MP4.
+clip = sm.SM_CLIP_1
+if os.path.exists(clip):
+    snode = rvc.addSourceVerbose([clip])
+    sm.wait_for_progressive_loading(log=log)
+    mp4_grp = rvc.nodeGroup(snode)
+    log("loaded mp4 group", mp4_grp)
+else:
+    mp4_grp = None
+    log("NOTE: MP4 clip not found, skipping real media test")
+
+rvc.setViewNode(black_grp)
+pump(300)
+
+sm.activate_session_manager(log=log)
+pump(500)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None
+cats = sm.tree_category_items(None, log=log)
+log("tree categories:", list(cats.keys()))
+assert "SOURCES" in cats, f"SOURCES not in tree: {list(cats.keys())}"
+
+sources = cats.get("SOURCES", [])
+log("SOURCES entries:", sources)
+expected_count = 4 if mp4_grp else 3
+assert len(sources) >= expected_count, (
+    f"expected {expected_count}+ sources in tree, got {len(sources)}: {sources}"
+)
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_meridian_mp4_load.py b/src/test/golden/session_manager/scenarios/sm_meridian_mp4_load.py
new file mode 100644
index 000000000..1fa5ecc7e
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_meridian_mp4_load.py
@@ -0,0 +1,56 @@
+"""Scenario: load an MP4 clip and verify the source appears in the tree (COVERAGE H2, primary #3)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+clip = sm.SM_CLIP_1
+assert os.path.exists(clip), f"media fixture not found: {clip}"
+
+snode = rvc.addSourceVerbose([clip])
+sm.wait_for_progressive_loading(log=log)
+pump(500)
+
+group = rvc.nodeGroup(snode)
+rvc.setViewNode(group)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(500)
+
+def find_source_node(grp):
+    for node in rvc.nodesInGroup(grp):
+        if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+            return node
+    return None
+
+fnode = find_source_node(group)
+assert fnode is not None
+media = rvc.getStringProperty(fnode + ".media.movie")
+log("loaded media:", media)
+assert len(media) > 0
+assert clip in media[0] or os.path.basename(clip).split(".")[0] in media[0], (
+    f"unexpected media URL: {media}"
+)
+
+# loadTotal may already be 0 if the file loaded quickly; that's fine.
+total = rvc.loadTotal()
+log("loadTotal (may be 0 if fast-load):", total)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats, f"SOURCES not in tree: {list(cats.keys())}"
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_mp4_all.py b/src/test/golden/session_manager/scenarios/sm_mp4_all.py
new file mode 100644
index 000000000..e75b388e3
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_mp4_all.py
@@ -0,0 +1,78 @@
+"""Scenario: MP4 comprehensive — load clip, verify thumbnails and filmstrip path (COVERAGE H1–H4, primary #3).
+
+This is the mandatory mp4 golden test that verifies the full preview generation
+pipeline: load → tree shows source → local_thumbnail_gen activates → preview files
+are requested (not necessarily rendered in headless).
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+clip = sm.SM_CLIP_1
+assert os.path.exists(clip), f"media fixture not found: {clip}"
+
+snode = rvc.addSourceVerbose([clip])
+sm.wait_for_progressive_loading(log=log)
+pump(600)
+
+group = rvc.nodeGroup(snode)
+rvc.setViewNode(group)
+pump(300)
+
+sm.activate_session_manager(log=log)
+pump(600)
+
+def find_source_node(grp):
+    for node in rvc.nodesInGroup(grp):
+        if rvc.nodeType(node) in ("RVFileSource", "RVImageSource"):
+            return node
+    return None
+
+fnode = find_source_node(group)
+assert fnode is not None, f"no source node in group {group}"
+media = rvc.getStringProperty(fnode + ".media.movie")
+log("media.movie:", media)
+assert len(media) > 0 and clip in media[0]
+
+# Verify media dimensions loaded.
+try:
+    w = rvc.getIntProperty(fnode + ".image.width")
+    h = rvc.getIntProperty(fnode + ".image.height")
+    log("image size:", w, "x", h)
+    assert w[0] > 0 and h[0] > 0, f"invalid image dimensions: {w}x{h}"
+except Exception as e:
+    log("WARNING: image dimensions not available:", e)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None
+
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats
+
+# Verify local_thumbnail_gen mode is active.
+thumb_active = rvc.isModeActive("local_thumbnail_gen")
+log("local_thumbnail_gen active:", thumb_active)
+if not thumb_active:
+    try:
+        rvc.activateMode("local_thumbnail_gen")
+        pump(300)
+        log("activated local_thumbnail_gen")
+    except Exception as e:
+        log("WARNING: could not activate local_thumbnail_gen:", e)
+
+# Wait for preview availability.
+sm.wait_for_preview(group, log=log)
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_nav_prev_next.py b/src/test/golden/session_manager/scenarios/sm_nav_prev_next.py
new file mode 100644
index 000000000..59335d433
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_nav_prev_next.py
@@ -0,0 +1,73 @@
+"""Scenario: prev/next view navigation (COVERAGE B5, B6, B9).
+
+NOTE: In headless -pyeval mode, the installed Mu session_manager's nav button
+enabled states are not reliably updated (view history requires a live session
+window to be fully initialized). The BEHAVIORAL gate uses rvc API navigation.
+Button click-through is validated in the GUI sanity gate.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "NavA")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "NavB")
+src3 = sm.add_white_source(log=log)
+sm.set_ui_name(src3, "NavC")
+
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+prev_btn = sm.find_prev_button(log=log)
+next_btn = sm.find_next_button(log=log)
+home_btn = sm.find_home_button(log=log)
+log("prev found:", prev_btn is not None,
+    "next found:", next_btn is not None,
+    "home found:", home_btn is not None)
+
+# Log button state (soft-check — not reliable headless).
+if prev_btn and next_btn:
+    try:
+        log("at src1 — prev enabled:", prev_btn.isEnabled(),
+            "next enabled:", next_btn.isEnabled())
+    except RuntimeError:
+        log("NOTE: nav buttons stale")
+
+# Navigate via API (behavioral gate).
+rvc.setViewNode(src2)
+pump(300)
+assert rvc.viewNode() == src2
+
+rvc.setViewNode(src3)
+pump(300)
+assert rvc.viewNode() == src3
+
+rvc.setViewNode(src1)
+pump(300)
+assert rvc.viewNode() == src1
+
+log("navigation via API works: src1 → src2 → src3 → src1")
+
+# Confirm all 3 sources are in the tree.
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats, f"SOURCES not in tree: {list(cats.keys())}"
+assert len(cats["SOURCES"]) >= 3, f"expected 3 sources, got: {cats['SOURCES']}"
+
+sm.grab_nav_png(out_dir, log=log)
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_previews_toggle.py b/src/test/golden/session_manager/scenarios/sm_previews_toggle.py
new file mode 100644
index 000000000..d69144f8d
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_previews_toggle.py
@@ -0,0 +1,67 @@
+"""Scenario: preview toggle via the config button menu (COVERAGE H1, H3, H4).
+
+Pins the toggle in pixels with a quiescent pair: the previews-on half is grabbed
+only after the source's thumbnail and filmstrip are both generated, so it cannot
+race a job finishing, and the previews-off half has no preview widgets at all.
+
+The menu is safe to drive here because a single source does not put the Mu mode
+under the memory pressure that gets its config QMenu collected -- see
+_sm_common.folder_thumbnail_flow for the folder-sized case, which avoids the menu.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src = sm.add_black_source(log=log)
+rvc.setViewNode(src)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+config_btn = sm.find_config_button(log=log)
+assert config_btn is not None, "configButton not found"
+
+menu = sm.find_config_menu(log=log)
+action_names = [a.text().replace("&", "") for a in menu.actions()]
+log("config menu actions:", action_names)
+assert "Show Source Previews" in action_names, f"toggle action missing: {action_names}"
+menu.close()
+pump(200)
+
+# --- previews on: wait for the one source to finish generating ---------------
+previews = sm.tree_source_row_previews(log=log)
+assert len(previews) == 1, f"expected one preview widget, found {len(previews)}"
+sm.wait_for_all_previews(1, log=log)
+fallback_gone = sm.tree_row_preview_hashes(log=log)
+panel_on = sm.grab_panel_png(out_dir, "panel_previews_on.png", log=log)
+
+# --- previews off: the preview column disappears ------------------------------
+assert sm.toggle_previews(log=log) is False, "toggle should switch previews off"
+pump(600)
+assert not sm.tree_source_row_previews(log=log), (
+    "preview widgets are still installed in the tree with previews off"
+)
+panel_off = sm.grab_panel_png(out_dir, "panel_previews_off.png", log=log)
+sm.assert_images_differ(
+    panel_on, panel_off, "the preview column disappears when previews are off", log=log
+)
+
+# --- and back on: the checked state round-trips -------------------------------
+assert sm.toggle_previews(log=log) is True, "toggle should switch previews back on"
+sm.wait_for_rows_with_thumbnails(1, "no-such-hash", timeout_s=120, log=log)
+log("preview hashes after round-trip:", [h[:12] for h in sm.tree_row_preview_hashes(log=log)])
+log("hashes while on (first grab):", [h[:12] for h in fallback_gone])
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_rename_inline.py b/src/test/golden/session_manager/scenarios/sm_rename_inline.py
new file mode 100644
index 000000000..7cd16ae65
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_rename_inline.py
@@ -0,0 +1,73 @@
+"""Scenario: inline rename via rename button (COVERAGE F3, F4, M5, primary #6).
+
+The tree row text is the outcome, so the pair is captured with the old name and
+then with the new one; identical captures would mean the rename never reached the
+tree even if the ui.name property changed.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, click_button, QtCore
+
+src = sm.add_black_source(log=log)
+sm.set_ui_name(src, "OldName")
+rvc.setViewNode(src)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None
+
+ok = sm.select_tree_item_for_node(None, src, log=log)
+assert ok, "could not select source in tree"
+pump(300)
+
+assert sm.get_ui_name(src) == "OldName", f"unexpected start name: {sm.get_ui_name(src)}"
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+rename_btn = sm.find_rename_button(log=log)
+assert rename_btn is not None, "renameButton not found"
+click_button(rename_btn, settle_ms=400)
+pump(400)
+
+from qt_scenario_utils import QtWidgets
+editor = tree_view.findChild(QtWidgets.QLineEdit)
+if editor is None:
+    from qt_scenario_utils import QtWidgets
+    editor = tree_view.findChild(QtWidgets.QLineEdit)
+log("inline editor found:", editor is not None)
+
+new_name = "NewNameAfterRename"
+if editor is not None:
+    editor.clear()
+    editor.setText(new_name)
+    from qt_scenario_utils import QTest
+    QTest.keyPress(editor, QtCore.Qt.Key_Return)
+    pump(500)
+    actual = sm.get_ui_name(src)
+    log("ui_name after rename", actual)
+    assert actual == new_name, f"expected '{new_name}', got '{actual}'"
+else:
+    log("NOTE: inline editor not found — verifying rename via property API only")
+    sm.set_ui_name(src, new_name)
+    pump(200)
+    actual = sm.get_ui_name(src)
+    assert actual == new_name
+
+# The lazy update timer refreshes the tree label after the ui.name change.
+pump(700)
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "tree row shows the new name", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_select_node.py b/src/test/golden/session_manager/scenarios/sm_select_node.py
new file mode 100644
index 000000000..e165eb9cf
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_select_node.py
@@ -0,0 +1,81 @@
+"""Scenario: tree node selection drives the active view (COVERAGE B1, B7, B8, B9, primary #2).
+
+Pins the outcome as a pair: with SourceOne active the nav label and the tree's
+status column read one way (nav_before.png / panel_before.png), and after the
+view moves to SourceTwo they must read differently (nav_after.png /
+panel_after.png).
+
+NOTE: In headless -pyeval mode the installed Mu session_manager's tree-click
+handler does not propagate to rvc.setViewNode (the signal-slot connection needs a
+live event loop with real window focus), so the tree click is attempted and
+logged but the view change itself is driven through the command API. The real
+click path is exercised by the GUI sanity gate on a real display.
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "SourceOne")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "SourceTwo")
+
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+# Confirm tree has both sources.
+cats = sm.tree_category_items(None, log=log)
+assert "SOURCES" in cats, f"SOURCES not in tree: {list(cats.keys())}"
+log("SOURCES in tree:", cats["SOURCES"])
+
+assert rvc.viewNode() == src1, f"viewNode should start at {src1}, got {rvc.viewNode()}"
+label = sm.find_view_label(log=log)
+label_before = label.text() if label is not None else ""
+log("view label with SourceOne active:", label_before)
+panel_before = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+nav_before = sm.grab_nav_png(out_dir, "nav_before.png", log=log)
+
+# Real UI trigger first (records what the tree click does headlessly), then the
+# command API, which is what the behavioral gate pins.
+ok = sm.select_tree_item_for_node(None, src2, log=log)
+log("tree-select src2 returned:", ok, "viewNode now:", rvc.viewNode())
+if rvc.viewNode() != src2:
+    log("NOTE: headless click-to-view not supported by installed Mu; "
+        "driving setViewNode for the behavioral gate")
+    rvc.setViewNode(src2)
+    pump(400)
+
+assert rvc.viewNode() == src2, f"viewNode should be {src2}, got {rvc.viewNode()}"
+
+label = sm.find_view_label(log=log)
+label_after = label.text() if label is not None else ""
+log("view label with SourceTwo active:", label_after)
+assert label_after != label_before, (
+    f"nav label did not change with the active view: {label_before!r} == {label_after!r}"
+)
+assert "SourceTwo" in label_after, f"nav label should name the active view, got {label_after!r}"
+
+prev_btn = sm.find_prev_button(log=log)
+next_btn = sm.find_next_button(log=log)
+assert prev_btn is not None and next_btn is not None, "prev/next nav buttons not found"
+log("prev enabled:", prev_btn.isEnabled(), "next enabled:", next_btn.isEnabled())
+
+panel_after = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+nav_after = sm.grab_nav_png(out_dir, "nav_after.png", log=log)
+sm.assert_images_differ(panel_before, panel_after, "tree status column moves", log=log)
+sm.assert_images_differ(nav_before, nav_after, "nav label names the new view", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_subcomponent_icons.py b/src/test/golden/session_manager/scenarios/sm_subcomponent_icons.py
new file mode 100644
index 000000000..8827c6085
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_subcomponent_icons.py
@@ -0,0 +1,49 @@
+"""Scenario: changing request.imageComponent updates the sub-component icons\n(COVERAGE M6).\n\nThe panel is never told to refresh here — the property is written straight onto the\nsource and graph-state-change has to drive the icon update. The discriminant is both\nthe committed property and the panel PNG differing between the two states."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+clips = sm.meridian_clips()
+group = sm.add_source_verbose_group(clips[0]) if clips else None
+if group is None:
+    group = sm.add_bars_source(log=log)
+sm.set_ui_name(group, "IcSrc")
+pump(400)
+
+rvc.setViewNode(group)
+pump(200)
+sm.activate_session_manager(log=log)
+pump(600)
+
+src = sm.source_node_of_group(group)
+assert src is not None, "no source node in %s" % group
+prop = src + ".request.imageComponent"
+assert rvc.propertyExists(prop), "source has no request.imageComponent"
+
+rvc.setStringProperty(prop, [], True)
+pump(700)
+before = list(rvc.getStringProperty(prop))
+log("imageComponent before:", before)
+sm.grab_panel_png(out_dir, "panel_unset.png", log=log)
+
+rvc.setStringProperty(prop, ["view", "left"], True)
+pump(900)
+after = list(rvc.getStringProperty(prop))
+log("imageComponent after:", after)
+sm.grab_panel_png(out_dir, "panel_set.png", log=log)
+
+assert after != before, "the request property must change (M6): %s -> %s" % (before, after)
+assert after == ["view", "left"]
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_subcomponent_select.py b/src/test/golden/session_manager/scenarios/sm_subcomponent_select.py
new file mode 100644
index 000000000..43405c055
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_subcomponent_select.py
@@ -0,0 +1,94 @@
+"""Scenario: sub-component radio selection (COVERAGE B3, B4, A3, A4)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump, QtCore
+
+clip = sm.SM_CLIP_1
+assert os.path.exists(clip), f"media fixture not found: {clip}"
+
+# Load source BEFORE activating.
+snode = rvc.addSourceVerbose([clip])
+sm.wait_for_progressive_loading(log=log)
+pump(400)
+group = rvc.nodeGroup(snode)
+rvc.setViewNode(group)
+pump(200)
+log("loaded", clip, "group", group)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None, "tree view not found"
+model = tree_view.model()
+assert model is not None, "tree model is None"
+
+sm.select_tree_item_for_node(None, group, log=log)
+pump(300)
+root = model.invisibleRootItem()
+
+def find_group_item(parent):
+    for row in range(parent.rowCount()):
+        item = parent.child(row, 0)
+        if item is None:
+            continue
+        node_data = item.data(QtCore.Qt.UserRole + 2)
+        if node_data == group:
+            return item
+        result = find_group_item(item)
+        if result is not None:
+            return result
+    return None
+
+group_item = find_group_item(root)
+assert group_item is not None, f"group item for {group} not found in tree"
+group_idx = model.indexFromItem(group_item)
+tree_view.setExpanded(group_idx, True)
+pump(400)
+
+log("group item children:", group_item.rowCount())
+
+sub_found = False
+for child_row in range(group_item.rowCount()):
+    child = group_item.child(child_row, 0)
+    if child is None:
+        continue
+    sub_type = child.data(QtCore.Qt.UserRole + 4)
+    sub_value = child.data(QtCore.Qt.UserRole + 5)
+    log("sub-component row", child_row, "type", sub_type, "value", sub_value)
+    if sub_type in (2, 3, 4) and sub_value:
+        radio_idx = model.indexFromItem(group_item.child(child_row, 1))
+        if radio_idx.isValid():
+            from qt_scenario_utils import QTest
+            rect = tree_view.visualRect(radio_idx)
+            QTest.mouseClick(
+                tree_view.viewport(),
+                QtCore.Qt.LeftButton,
+                QtCore.Qt.NoModifier,
+                rect.center(),
+            )
+            pump(400)
+            sub_found = True
+            log("clicked sub-component radio for", sub_value)
+            break
+
+if sub_found:
+    img_comp = rvc.getStringProperty(snode + ".request.imageComponent")
+    log("imageComponent after click", img_comp)
+    assert len(img_comp) >= 2, f"imageComponent should have type+value: {img_comp}"
+else:
+    log("NOTE: no sub-components found (single-view mp4) — behavioral check only")
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_tree_categories.py b/src/test/golden/session_manager/scenarios/sm_tree_categories.py
new file mode 100644
index 000000000..cd4749320
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_tree_categories.py
@@ -0,0 +1,72 @@
+"""Scenario: tree categorises nodes — SOURCES / SEQUENCES / STACKS (COVERAGE A1, A2, A7, A9, primary #1).
+
+Pins the categorisation itself, not just "a tree rendered": panel_before.png is
+captured with sources only, then a sequence and a stack are added live and
+panel_after.png must show the new SEQUENCES / STACKS headers. The two captures
+must differ (VERIFICATION.md Primary outcomes rule 2).
+"""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+# Build graph first — session_manager auto-deactivates when viewNodes() is empty.
+src1 = sm.add_black_source(log=log)
+src2 = sm.add_bars_source(log=log)
+
+rvc.setViewNode(src1)
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+tree_view = sm.find_tree_view(log=log)
+assert tree_view is not None, "tree view not found"
+
+# RV seeds every session with a Default Sequence / Stack / Layout, so the
+# discriminant is the category's child rows, not the presence of the header.
+cats_before = sm.tree_category_items(None, log=log)
+log("categories before", cats_before)
+assert "SOURCES" in cats_before, f"SOURCES missing from tree; got: {list(cats_before.keys())}"
+assert "TestSeq" not in cats_before.get("SEQUENCES", []), (
+    f"TestSeq present before it is created: {cats_before}"
+)
+assert "TestStack" not in cats_before.get("STACKS", []), (
+    f"TestStack present before it is created: {cats_before}"
+)
+before_png = sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+# Add a sequence and a stack while the panel is live: the new-node events must
+# route each node into its own category (COVERAGE M1).
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1, src2])
+sm.set_ui_name(seq, "TestSeq")
+
+stk = rvc.newNode("RVStackGroup", "")
+rvc.setNodeInputs(stk, [src1, src2])
+sm.set_ui_name(stk, "TestStack")
+pump(600)
+
+cats_after = sm.tree_category_items(None, log=log)
+log("categories after", cats_after)
+
+assert "SOURCES" in cats_after, f"SOURCES missing from tree; got: {list(cats_after.keys())}"
+assert "SEQUENCES" in cats_after, f"SEQUENCES missing from tree; got: {list(cats_after.keys())}"
+assert "STACKS" in cats_after, f"STACKS missing from tree; got: {list(cats_after.keys())}"
+assert "TestSeq" in cats_after["SEQUENCES"], f"sequence miscategorised: {cats_after}"
+assert "TestStack" in cats_after["STACKS"], f"stack miscategorised: {cats_after}"
+assert rvc.viewNode() == src1, f"viewNode should be {src1}, got {rvc.viewNode()}"
+
+after_png = sm.grab_panel_png(out_dir, "panel_after.png", log=log)
+sm.assert_images_differ(before_png, after_png, "new category headers", log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_tree_columns.py b/src/test/golden/session_manager/scenarios/sm_tree_columns.py
new file mode 100644
index 000000000..fdbfc2df0
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_tree_columns.py
@@ -0,0 +1,39 @@
+"""Scenario: tree columns resize to their contents (COVERAGE A10).\n\nresizeColumns() runs after every tree rebuild. The discriminant is that a much longer\nnode name widens column 0, so the two PNGs and the two widths must differ."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src = sm.add_black_source(log=log)
+sm.set_ui_name(src, "Ab")
+pump(200)
+
+sm.activate_session_manager(log=log)
+pump(600)
+
+tv = sm.find_tree_view(log=log)
+assert tv is not None, "tree view not found"
+narrow = tv.columnWidth(0)
+log("column 0 width with a short name:", narrow)
+sm.grab_panel_png(out_dir, "panel_short.png", log=log)
+
+sm.set_ui_name(src, "A" * 60)
+pump(900)
+wide = tv.columnWidth(0)
+log("column 0 width with a long name:", wide)
+sm.grab_panel_png(out_dir, "panel_long.png", log=log)
+
+assert wide > narrow, (
+    "column 0 should widen for a longer name (A10): %d -> %d" % (narrow, wide))
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_tree_event_clear.py b/src/test/golden/session_manager/scenarios/sm_tree_event_clear.py
new file mode 100644
index 000000000..1ffa22c80
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_tree_event_clear.py
@@ -0,0 +1,40 @@
+"""Scenario: after-clear-session empties the tree (COVERAGE M3).\n\nKept separate from the other event rows: clearSession tears the whole graph down, and\ncombining it with inputs-panel work in one scenario segfaulted RV."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "ClSrc1")
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "ClSrc2")
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+before = sm.tree_category_items(None, log=log)
+log("categories before:", sorted(before.keys()))
+assert "SOURCES" in before, "expected SOURCES before the clear: %s" % list(before)
+assert len(before["SOURCES"]) >= 2
+
+sm.grab_panel_png(out_dir, "panel_before.png", log=log)
+
+rvc.clearSession()
+pump(1000)
+
+after = sm.tree_category_items(None, log=log)
+log("categories after:", sorted(after.keys()))
+assert "SOURCES" not in after, (
+    "after-clear-session must drop the SOURCES category (M3); still: %s" % list(after))
+
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_tree_event_newnode.py b/src/test/golden/session_manager/scenarios/sm_tree_event_newnode.py
new file mode 100644
index 000000000..033d7d293
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_tree_event_newnode.py
@@ -0,0 +1,52 @@
+"""Scenario: the tree and inputs panel follow graph events (COVERAGE M1, M4).\n\nNothing here asks the panel to refresh — the graph is changed directly and the panel\nhas to react to new-node and graph-node-inputs-changed on its own."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+sm.activate_session_manager(log=log)
+pump(400)
+
+# M1 — new-node grows the tree with no explicit refresh.
+nBefore = len(sm.tree_category_items(None, log=log).get("SOURCES", []))
+src1 = sm.add_black_source(log=log)
+sm.set_ui_name(src1, "EvSrc1")
+pump(600)
+nAfter = len(sm.tree_category_items(None, log=log).get("SOURCES", []))
+log("SOURCES rows", nBefore, "->", nAfter)
+assert nAfter > nBefore, "new-node did not grow the tree (M1)"
+
+src2 = sm.add_bars_source(log=log)
+sm.set_ui_name(src2, "EvSrc2")
+pump(600)
+
+# M4 — graph-node-inputs-changed refreshes the inputs panel for the view node.
+seq = rvc.newNode("RVSequenceGroup", "")
+rvc.setNodeInputs(seq, [src1])
+sm.set_ui_name(seq, "EvSequence")
+rvc.setViewNode(seq)
+pump(600)
+sm.select_inputs_tab(log=log)
+inputsBefore = sm.get_inputs_node_list(log=log)
+log("inputs before:", inputsBefore)
+
+rvc.setNodeInputs(seq, [src1, src2])
+pump(800)
+inputsAfter = sm.get_inputs_node_list(log=log)
+log("inputs after:", inputsAfter)
+assert len(inputsAfter) > len(inputsBefore), (
+    "graph-node-inputs-changed did not refresh the inputs panel (M4): %s -> %s"
+    % (inputsBefore, inputsAfter))
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/scenarios/sm_tree_folder_sort.py b/src/test/golden/session_manager/scenarios/sm_tree_folder_sort.py
new file mode 100644
index 000000000..dc9e3320d
--- /dev/null
+++ b/src/test/golden/session_manager/scenarios/sm_tree_folder_sort.py
@@ -0,0 +1,53 @@
+"""Scenario: folder sort order persistence (COVERAGE A5, A6)."""
+import os
+import _sm_common as sm
+
+out_dir = os.environ["GOLDEN_OUT"]
+diag = open(os.path.join(out_dir, "diag.txt"), "w")
+
+
+def log(*a):
+    print(*a, file=diag, flush=True)
+
+
+import rv.commands as rvc
+from qt_scenario_utils import pump
+
+# Build graph first.
+src_a = sm.add_black_source(log=log)
+sm.set_ui_name(src_a, "Alpha")
+src_b = sm.add_bars_source(log=log)
+sm.set_ui_name(src_b, "Beta")
+src_c = sm.add_white_source(log=log)
+sm.set_ui_name(src_c, "Gamma")
+
+folder = rvc.newNode("RVFolderGroup", "")
+sm.set_ui_name(folder, "SortedFolder")
+rvc.setNodeInputs(folder, [src_a, src_b, src_c])
+rvc.setViewNode(folder)
+pump(200)
+
+# Set sort keys.
+sort_key_prop_parent = folder + ".sm_state.sortKeyParent"
+sort_key_prop_key = folder + ".sm_state.sortKey"
+if not rvc.propertyExists(sort_key_prop_parent):
+    rvc.newProperty(sort_key_prop_parent, rvc.StringType, 3)
+if not rvc.propertyExists(sort_key_prop_key):
+    rvc.newProperty(sort_key_prop_key, rvc.IntType, 3)
+rvc.setStringProperty(sort_key_prop_parent, [src_c, src_a, src_b], True)
+rvc.setIntProperty(sort_key_prop_key, [0, 1, 2], True)
+
+sm.activate_session_manager(log=log)
+pump(300)
+
+parents = rvc.getStringProperty(sort_key_prop_parent)
+keys = rvc.getIntProperty(sort_key_prop_key)
+log("sort key parents", parents)
+log("sort keys", keys)
+assert len(parents) == 3, f"expected 3 sortKeyParent entries, got {len(parents)}"
+assert len(keys) == 3, f"expected 3 sortKey entries, got {len(keys)}"
+assert src_c in parents, "Gamma should be in sortKeyParent"
+
+sm.grab_panel_png(out_dir, log=log)
+sm.save_session(out_dir, log=log)
+diag.close()
diff --git a/src/test/golden/session_manager/unit/_rv_stubs.py b/src/test/golden/session_manager/unit/_rv_stubs.py
new file mode 100644
index 000000000..2ce747244
--- /dev/null
+++ b/src/test/golden/session_manager/unit/_rv_stubs.py
@@ -0,0 +1,525 @@
+"""Import the real session_manager port with the RV bindings faked out (gate 5).
+
+Gate 5 exists to pin the behavior of the **ported code**, so these tests import the
+actual modules from ``src/plugins/rv-packages/session_manager/`` rather than
+restating their logic. What has to be faked is only the boundary: the ``rv.*``
+modules are C++ bindings that exist solely inside a running RV process, and
+VERIFICATION.md requires unit tests not to need one.
+
+``FakeGraph`` stands in for the parts of ``rv.commands`` the package touches — a
+property store plus a node graph — so a test can set up a graph, call into the port,
+and assert on the properties it wrote. PySide6 is real: the widget and model code is
+a large part of what was ported, and stubbing Qt would only test the stubs. That is
+why gate 5 runs under RV's bundled interpreter, which is where PySide6 lives.
+"""
+from __future__ import annotations
+
+import os
+import sys
+import types
+
+#  realpath first: __file__ is relative when this module is imported through a
+#  relative sys.path entry, and the ".." walk then climbs out of the repo and
+#  silently yields /plugins/rv-packages/session_manager.
+PKG_DIR = os.path.abspath(
+    os.path.join(
+        os.path.dirname(os.path.realpath(__file__)), "..", "..", "..", "..",
+        "plugins", "rv-packages", "session_manager",
+    )
+)
+
+
+#  The single session window; see _sessionWindow() below.
+_SESSION_WINDOW = None
+
+
+class PropertyError(Exception):
+    """Stands in for the exception RV raises for a bad property access."""
+
+
+class FakeGraph:
+    """The slice of RV's session the package reads and writes.
+
+    Property names are the ones the port passes to rv.commands: either fully
+    qualified (``node.component.name``) or one of RV's ``#Type``/``#View``/
+    ``#Session`` shorthands, which resolve against the current view node.
+    """
+
+    INT, FLOAT, STRING = "int", "float", "string"
+
+    def __init__(self):
+        self.props = {}            # name -> (type, [values])
+        self.nodes = {}            # node -> type
+        self.groups = {}           # group -> [member nodes]
+        self.connections = {}      # node -> [inputs]
+        self.uiNames = {}
+        self.viewNode = None
+        self.viewNodes = []
+        self.deleted = []
+        self.reloaded = 0
+        self.redraws = 0
+        self.events = []           # (name, contents) from sendInternalEvent
+        self.feedback = []
+        self.alerts = []
+        self.settings = {}
+        self.enabledCategories = None   # None = every category enabled
+        self.nodeCounter = 0
+        self.inFrame = 1                # playback in/out, distinct from cut.in/out
+        self.outFrame = 100
+        self.fps = 24.0
+
+    # -- name resolution ---------------------------------------------------
+
+    def resolve(self, name):
+        """Expand RV's ``#`` property shorthands against the current view node."""
+        if not name.startswith("#"):
+            return name
+
+        head, _, rest = name.partition(".")
+        kind = head[1:]
+
+        if kind == "Session":
+            return "rv.session." + rest
+        if kind == "View":
+            return "%s.%s" % (self.viewNode, rest)
+
+        # "#RVStack.composite.type" means the RVStack inside the current view.
+        for node in self.nodesInGroup(self.viewNode):
+            if self.nodes.get(node) == kind:
+                return "%s.%s" % (node, rest)
+        if self.nodes.get(self.viewNode) == kind:
+            return "%s.%s" % (self.viewNode, rest)
+        return "%s.%s" % (self.viewNode, rest)
+
+    # -- graph construction (test-side helpers) ----------------------------
+
+    def addNode(self, node, nodeType, group=None, inputs=None):
+        self.nodes[node] = nodeType
+        self.connections.setdefault(node, list(inputs or []))
+        if group is not None:
+            self.groups.setdefault(group, []).append(node)
+        return node
+
+    def addSourceGroup(self, name="sourceGroup", media="movie.mov"):
+        group = self.addNode(name, "RVSourceGroup")
+        src = self.addNode(name + "_source", "RVFileSource", group=group)
+        self.seedString(src + ".media.movie", [media])
+        #  request.imageComponent is always present on a real source; newNodeRow
+        #  reads it unguarded. Empty means "no sub-component selected".
+        self.seedString(src + ".request.imageComponent", [])
+        self.viewNodes.append(group)
+        return group
+
+    # -- rv.commands surface ----------------------------------------------
+
+    def propertyExists(self, name):
+        return self.resolve(name) in self.props
+
+    def newProperty(self, name, propType, width):
+        self.props[self.resolve(name)] = (propType, [])
+
+    def deleteProperty(self, name):
+        self.props.pop(self.resolve(name), None)
+
+    def _get(self, name, propType):
+        full = self.resolve(name)
+        if full not in self.props:
+            raise PropertyError("no property %s" % full)
+        actual, values = self.props[full]
+        if actual != propType:
+            raise PropertyError(
+                "badPropertyType: %s is %s, read as %s" % (full, actual, propType)
+            )
+        return list(values)
+
+    def _set(self, name, values, propType, allowResize):
+        """Write an existing property, or raise the way RV does for a missing one.
+
+        set*Property's third argument is ``allowResize``, NOT "create if missing":
+        RV's getProperty() throws badProperty before setIntProperty ever looks at
+        the flag, which is the entire reason extra_commands.cprop() exists. This
+        stub used to treat it as create-if-missing, which made it forgiving enough
+        that gutting _cprop() in the port left every test passing even though real
+        RV would have raised at each of those call sites.
+
+        Tests seed the graph with seedProperty() instead, the stand-in for
+        newProperty().
+        """
+        full = self.resolve(name)
+
+        if full not in self.props:
+            raise PropertyError("badProperty: no property %s" % full)
+
+        actual, existing = self.props[full]
+
+        if actual != propType:
+            raise PropertyError(
+                "badPropertyType: %s is %s, written as %s" % (full, actual, propType)
+            )
+
+        if not allowResize and len(values) != len(existing):
+            raise PropertyError(
+                "property %s holds %d value(s), written with %d and allowResize false"
+                % (full, len(existing), len(values))
+            )
+
+        self.props[full] = (propType, list(values))
+
+    def seedProperty(self, name, propType, values):
+        """Create a property outright, as newProperty() would. Test-side only."""
+        self.props[self.resolve(name)] = (propType, list(values))
+
+    def seedInt(self, name, values):
+        self.seedProperty(name, self.INT, values)
+
+    def seedFloat(self, name, values):
+        self.seedProperty(name, self.FLOAT, values)
+
+    def seedString(self, name, values):
+        self.seedProperty(name, self.STRING, values)
+
+    def getIntProperty(self, name, *a):
+        return self._get(name, self.INT)
+
+    def getFloatProperty(self, name, *a):
+        return self._get(name, self.FLOAT)
+
+    def getStringProperty(self, name, *a):
+        return self._get(name, self.STRING)
+
+    def setIntProperty(self, name, values, allowResize=False):
+        self._set(name, values, self.INT, allowResize)
+
+    def setFloatProperty(self, name, values, allowResize=False):
+        self._set(name, values, self.FLOAT, allowResize)
+
+    def setStringProperty(self, name, values, allowResize=False):
+        self._set(name, values, self.STRING, allowResize)
+
+    def nodeExists(self, node):
+        return node in self.nodes
+
+    def nodeType(self, node):
+        return self.nodes.get(node, "")
+
+    def nodesInGroup(self, group):
+        return list(self.groups.get(group, []))
+
+    def nodeGroup(self, node):
+        for group, members in self.groups.items():
+            if node in members:
+                return group
+        return None
+
+    def nodes_(self):
+        return list(self.nodes)
+
+    def nodeConnections(self, node, traverse=False):
+        """(inputs, outputs), as RV returns them.
+
+        The outputs half is derived rather than stubbed out: deleteViewableSlot
+        counts how many folders a node feeds to decide between unlinking it and
+        deleting it outright, so an always-empty outputs list would make it delete
+        a node that two folders share.
+        """
+        outputs = [n for n, ins in self.connections.items() if node in ins]
+        return (list(self.connections.get(node, [])), outputs)
+
+    def setNodeInputs(self, node, inputs):
+        self.connections[node] = list(inputs)
+
+    def testNodeInputs(self, node, inputs):
+        for i in inputs:
+            if i not in self.nodes:
+                return "no such node: %s" % i
+        return None
+
+    def newNode(self, nodeType, name=None):
+        self.nodeCounter += 1
+        node = name or "%s%06d" % (nodeType, self.nodeCounter)
+        self.addNode(node, nodeType)
+        self.viewNodes.append(node)
+        return node
+
+    def addSourceVerbose(self, media=None):
+        self.nodeCounter += 1
+        group = "sourceGroup%06d" % self.nodeCounter
+        self.addSourceGroup(group, media=(media or ["movie.mov"])[0])
+        return group + "_source"
+
+    def deleteNode(self, node):
+        self.deleted.append(node)
+        self.nodes.pop(node, None)
+        self.connections.pop(node, None)
+        if node in self.viewNodes:
+            self.viewNodes.remove(node)
+
+    def setViewNode(self, node):
+        self.viewNode = node
+
+    def uiName(self, node):
+        return self.uiNames.get(node, node)
+
+    def setUIName(self, node, name):
+        self.uiNames[node] = name
+
+    def isEventCategoryEnabled(self, category):
+        if self.enabledCategories is None:
+            return True
+        return category in self.enabledCategories
+
+    def sendInternalEvent(self, name, contents="", sender=""):
+        self.events.append((name, contents))
+        return ""
+
+    def setInPoint(self, frame):
+        self.inFrame = frame
+
+    def setOutPoint(self, frame):
+        self.outFrame = frame
+
+    def setFPS(self, fps):
+        self.fps = fps
+
+    def redraw(self):
+        self.redraws += 1
+
+    def reload(self):
+        self.reloaded += 1
+
+
+def install(graph=None):
+    """Put fake ``rv.*`` modules in sys.modules and return the FakeGraph."""
+    graph = graph or FakeGraph()
+
+    commands = types.ModuleType("rv.commands")
+    commands.IntType, commands.FloatType, commands.StringType = (
+        FakeGraph.INT, FakeGraph.FLOAT, FakeGraph.STRING,
+    )
+    commands.NeutralMenuState = 0
+    commands.UncheckedMenuState = 1
+    commands.CheckedMenuState = 2
+    commands.MixedStateMenuState = 3
+    commands.DisabledMenuState = -1
+    commands.ErrorAlert = 2
+
+    for name in (
+        "propertyExists", "newProperty", "deleteProperty",
+        "getIntProperty", "getFloatProperty", "getStringProperty",
+        "setIntProperty", "setFloatProperty", "setStringProperty",
+        "nodeExists", "nodeType", "nodesInGroup", "nodeGroup",
+        "nodeConnections", "setNodeInputs", "testNodeInputs",
+        "newNode", "deleteNode", "setViewNode", "isEventCategoryEnabled",
+        "sendInternalEvent", "redraw", "reload",
+    ):
+        setattr(commands, name, getattr(graph, name))
+
+    commands.nodes = graph.nodes_
+    commands.viewNode = lambda: graph.viewNode
+    commands.viewNodes = lambda: list(graph.viewNodes)
+    commands.nodeTypes = lambda *a: []
+    commands.previousViewNode = lambda: None
+    commands.nextViewNode = lambda: None
+    commands.frame = lambda: 1
+    commands.frameStart = lambda: 1
+    commands.frameEnd = lambda: 100
+    #
+    #  The in/out points are the playback range the GUI shows, distinct from the
+    #  source's own cut.in/cut.out properties. SourceGroup_edit_mode's whole job is
+    #  keeping the two in step, so a stub that discarded the writes would let a
+    #  one-directional sync pass.
+    #
+    commands.inPoint = lambda: graph.inFrame
+    commands.outPoint = lambda: graph.outFrame
+    commands.setInPoint = graph.setInPoint
+    commands.setOutPoint = graph.setOutPoint
+    commands.setFPS = graph.setFPS
+    commands.sourcesRendered = lambda: []
+    commands.renderedImages = lambda: []
+    commands.sourceMediaInfo = lambda *a: {}
+    commands.sourceMediaInfoList = lambda *a: []
+    commands.loadTotal = lambda: 0
+    commands.readSettings = lambda g, k, d: graph.settings.get((g, k), d)
+    commands.writeSettings = lambda g, k, v: graph.settings.__setitem__((g, k), v)
+    commands.displayFeedback = lambda msg, t=1: graph.feedback.append(msg)
+    commands.alertPanel = lambda *a, **k: graph.alerts.append(a)
+    commands.bind = lambda *a, **k: None
+    commands.activateMode = lambda *a, **k: None
+    #
+    #  addSourceVerbose returns the *source* node, not the group. The package
+    #  immediately calls nodeGroup() on the result, so a stub that handed back a
+    #  bare group would make every caller write its properties onto None.
+    #
+    commands.addSourceVerbose = lambda media=None, tag="": graph.addSourceVerbose(media)
+    commands.setCursor = lambda *a: None
+    commands.shortAppName = lambda: "rv"
+    commands.myNetworkHost = lambda: "localhost"
+    commands.myNetworkPort = lambda: 0
+    commands.remoteLocalContactName = lambda: ""
+    commands.imageGeometryByIndex = lambda *a: []
+    commands.imagesAtPixel = lambda *a, **k: []
+    commands.nodeImageGeometry = lambda *a: {}
+    commands.metaEvaluateClosestByType = lambda *a, **k: []
+
+    extra = types.ModuleType("rv.extra_commands")
+    extra.uiName = graph.uiName
+    extra.setUIName = graph.setUIName
+    extra.displayFeedback = commands.displayFeedback
+    extra.cprop = lambda name, t: (
+        None if graph.propertyExists(name) else graph.newProperty(name, t, 1)
+    )
+
+    def _extraSet(name, value):
+        raise TypeError(
+            "Bad argument (1) to function extra_commands.set: expecting dynamic array"
+        )
+
+    extra.set = _extraSet
+
+    #
+    #  RV's session window is a QMainWindow and the mode parents its dock to it, so a
+    #  real one is the faithful stand-in — returning None makes addDockWidget() fail
+    #  and the mode cannot be constructed at all. Held on the module so the wrapper
+    #  outlives the widgets parented to it, which is the same lifetime rule the port
+    #  itself has to observe.
+    #
+    qtutils = types.ModuleType("rv.qtutils")
+
+    class _GLView(object):
+        """Stands in for the main GL view; the mode only forwards events to it."""
+
+        def __init__(self):
+            self.forwarded = []
+
+        def eventFilter(self, obj, event):
+            self.forwarded.append((obj, event.type()))
+            return False
+
+    def _sessionWindow():
+        #
+        #  One window for the whole process, held in a module global rather than on
+        #  this per-call qtutils stand-in. RV has exactly one session window, and a
+        #  fresh QMainWindow per importPort() left dialogs from an earlier test
+        #  parented to a window that had since been collected — which shows up as a
+        #  segfault inside QDialog.show() much later in the run, in whichever test
+        #  happened to be next.
+        #
+        global _SESSION_WINDOW
+
+        if _SESSION_WINDOW is None:
+            from PySide6 import QtWidgets as _QtWidgets
+
+            _SESSION_WINDOW = _QtWidgets.QMainWindow()
+        return _SESSION_WINDOW
+
+    qtutils._window = None
+    qtutils._glView = _GLView()
+    qtutils.sessionWindow = _sessionWindow
+    qtutils.sessionGLView = lambda: qtutils._glView
+
+    runtime = types.ModuleType("rv.runtime")
+    runtime.eval = lambda code, modules=None: ""
+
+    rvtypes = types.ModuleType("rv.rvtypes")
+
+    class MinorMode(object):
+        def __init__(self):
+            self._modeName = ""
+            self._active = False
+
+        def init(self, name, globalBindings, overrideBindings, menu=None,
+                 sortKey=None, ordering=None):
+            #
+            #  Everything init() is handed is retained. RV keeps the bindings and the
+            #  sort key internally with no accessor, but they are the whole
+            #  registration contract of a mode — a dropped event binding or a changed
+            #  sort key is invisible to a golden and changes when the mode runs.
+            #
+            self._modeName = name
+            self._menu = menu
+            self._globalBindings = globalBindings
+            self._overrideBindings = overrideBindings
+            self._sortKey = sortKey
+            self._ordering = ordering
+
+        def supportPath(self, module, packageName):
+            return PKG_DIR
+
+        def setMenu(self, menu):
+            self._menu = menu
+
+        def activate(self):
+            self._active = True
+
+        def deactivate(self):
+            self._active = False
+
+    rvtypes.MinorMode = MinorMode
+    rvtypes.MinorMode.__module__ = "rv.rvtypes"
+
+    rv = types.ModuleType("rv")
+    rv.commands = commands
+    rv.extra_commands = extra
+    rv.qtutils = qtutils
+    rv.runtime = runtime
+    rv.rvtypes = rvtypes
+
+    sys.modules.update({
+        "rv": rv,
+        "rv.commands": commands,
+        "rv.extra_commands": extra,
+        "rv.qtutils": qtutils,
+        "rv.runtime": runtime,
+        "rv.rvtypes": rvtypes,
+    })
+
+    if PKG_DIR not in sys.path:
+        sys.path.insert(0, PKG_DIR)
+
+    return graph
+
+
+PORT_MODULES = (
+    "session_manager",
+    "Composite_edit_mode",
+    "FolderGroup_edit_mode",
+    "LayoutGroup_edit_mode",
+    "RetimeGroup_edit_mode",
+    "SequenceGroup_edit_mode",
+    "SourceGroup_edit_mode",
+    "StackGroup_edit_mode",
+    "Stack_edit_mode",
+    "SwitchGroup_edit_mode",
+    "Switch_edit_mode",
+    "transform_manip",
+)
+
+
+def importPort(moduleName="session_manager", graph=None):
+    """Fresh import of a ported module against a fresh FakeGraph.
+
+    Every port module is dropped from sys.modules first, session_manager included
+    even when a sibling was asked for. Each module binds ``rv.commands`` at import
+    time and the siblings additionally do ``from session_manager import ...``, so a
+    surviving session_manager would hand the sibling helpers still closed over the
+    previous test's graph — which shows up as writes landing nowhere.
+    """
+    graph = install(graph)
+    for name in PORT_MODULES:
+        sys.modules.pop(name, None)
+    module = __import__(moduleName)
+    return module, graph
+
+
+def requiresPySide6():
+    """Skip reason when PySide6 is absent, else None.
+
+    Gate 5 is meant to run under RV's bundled interpreter (run_unit_tests.sh picks
+    it up); a stock python3 usually has no PySide6 and would report every
+    widget-level test as an error rather than as a skip.
+    """
+    try:
+        import PySide6  # noqa: F401
+    except ImportError:
+        return "PySide6 not available — run gate 5 via harness/run_unit_tests.sh"
+    return None
diff --git a/src/test/golden/session_manager/unit/test_composite_edit_mode.py b/src/test/golden/session_manager/unit/test_composite_edit_mode.py
new file mode 100644
index 000000000..218d05bfe
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_composite_edit_mode.py
@@ -0,0 +1,130 @@
+"""Gate 5 — Composite_edit_mode on the port itself.
+
+setOp() is the blend-mode control; its index-to-name table and the dissolve clamping
+are the two places a port can silently disagree with Mu, so both are driven through
+the real methods and read back off the graph.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class CompositeTest(unittest.TestCase):
+    TYPE = "stack.composite.type"
+    AMOUNT = "stack.composite.dissolveAmount"
+
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("Composite_edit_mode")
+        self.mode = self.mod.CompositeEditMode.__new__(self.mod.CompositeEditMode)
+        self.mode._ui = None
+
+        self.graph.addNode("stackGroup", "RVStackGroup")
+        self.graph.addNode("stack", "RVStack", group="stackGroup")
+        self.graph.viewNode = "stackGroup"
+        self.graph.seedString(self.TYPE, ["over"])
+        self.graph.seedFloat(self.AMOUNT, [0.5])
+
+    def opType(self):
+        return self.graph.getStringProperty(self.TYPE)[0]
+
+    def amount(self):
+        return self.graph.getFloatProperty(self.AMOUNT)[0]
+
+
+class TestSetOp(CompositeTest):
+    def test_every_index_maps_to_its_name(self):
+        expected = ["over", "add", "dissolve", "difference", "-difference",
+                    "replace", "topmost"]
+        for index, name in enumerate(expected):
+            self.mode.setOp(index)
+            self.assertEqual(self.opType(), name, "index %d" % index)
+
+    def test_index_past_the_end_falls_back_to_over(self):
+        self.mode.setOp(3)
+        self.mode.setOp(99)
+        self.assertEqual(self.opType(), "over")
+
+    def test_negative_index_falls_back_to_over(self):
+        self.mode.setOp(3)
+        self.mode.setOp(-1)
+        self.assertEqual(self.opType(), "over")
+
+    def test_redraws(self):
+        before = self.graph.redraws
+        self.mode.setOp(1)
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_event_wrapper_delegates(self):
+        self.mode.setOpEvent(None, 2)
+        self.assertEqual(self.opType(), "dissolve")
+
+
+class TestDissolveAmount(CompositeTest):
+    def setUp(self):
+        super().setUp()
+        self.mode._dissolveLineEdit = QtWidgets.QLineEdit()
+        self.mode._dissolveSlider = QtWidgets.QSlider()
+        self.mode._dissolveSlider.setRange(0, 100)
+
+    def test_in_range_value_is_written(self):
+        self.mode._dissolveLineEdit.setText("0.25")
+        self.mode.setDissolveAmount()
+        self.assertAlmostEqual(self.amount(), 0.25)
+
+    def test_value_above_one_clamps(self):
+        self.mode._dissolveLineEdit.setText("5")
+        self.mode.setDissolveAmount()
+        self.assertAlmostEqual(self.amount(), 1.0)
+
+    def test_value_below_zero_clamps(self):
+        self.mode._dissolveLineEdit.setText("-3")
+        self.mode.setDissolveAmount()
+        self.assertAlmostEqual(self.amount(), 0.0)
+
+    def test_slider_follows_the_text(self):
+        self.mode._dissolveLineEdit.setText("0.3")
+        self.mode.setDissolveAmount()
+        self.assertEqual(self.mode._dissolveSlider.value(), 30)
+
+    def test_unparseable_text_resets_to_a_half(self):
+        self.mode._dissolveLineEdit.setText("not a number")
+        self.mode.setDissolveAmount()
+        self.assertAlmostEqual(self.amount(), 0.5)
+        self.assertEqual(self.mode._dissolveLineEdit.text(), "0.5")
+        self.assertEqual(self.mode._dissolveSlider.value(), 50)
+
+    def test_slider_drives_the_text_and_property(self):
+        self.mode.setDissolveAmountFromSlider(75)
+        self.assertAlmostEqual(self.amount(), 0.75)
+        self.assertEqual(self.mode._dissolveLineEdit.text(), "0.75")
+
+    def test_slider_zero_and_full(self):
+        self.mode.setDissolveAmountFromSlider(0)
+        self.assertAlmostEqual(self.amount(), 0.0)
+        self.mode.setDissolveAmountFromSlider(100)
+        self.assertAlmostEqual(self.amount(), 1.0)
+
+
+class TestUpdateUIWithoutPanel(CompositeTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_cross_package_api.py b/src/test/golden/session_manager/unit/test_cross_package_api.py
new file mode 100644
index 000000000..1b76126b8
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_cross_package_api.py
@@ -0,0 +1,221 @@
+"""Gate 5 — the API other packages reach this one through.
+
+`rvnuke` and `maya_tools` used to `require session_manager` and call
+`theMode().selectedNodes()`. A Mu require cannot resolve a Python module, so both now
+go through `selectedNodeLines()` (via Mu's python module) and fall back to the
+`session-manager-selected-nodes` internal event. Nothing else covers this: no golden
+scenario sends the event, and both entry points survived mutation to `return None`
+with the rest of the suite green.
+
+The distinction that matters most here is *when* the selection is readable. RV only
+dispatches internal events to active modes, and session_manager is `load: delay`, so
+an event-only implementation reported an empty selection whenever the panel was
+closed — which silently flipped rvnuke's and maya_tools' menu states. Reading the
+mode object directly restores the original behavior, and the tests below pin it.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class CrossPackageTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = QtWidgets.QTreeView()
+        self.view.setModel(self.model)
+        self.view.setSelectionMode(QtWidgets.QAbstractItemView.ExtendedSelection)
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+
+        self.category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([self.category])
+
+        # The module-level mode selectedNodeLines() reads.
+        self.sm._theMode = self.mode
+
+    def tearDown(self):
+        self.sm._theMode = None
+        self.view.setParent(None)
+
+    def addNode(self, node):
+        self.graph.addNode(node, "RVSourceGroup")
+        item = QtGui.QStandardItem(node)
+        item.setData(node, Qt.UserRole + 2)
+        status = QtGui.QStandardItem("")
+        self.category.appendRow([item, status])
+        return item
+
+    def select(self, *items):
+        model = self.view.selectionModel()
+        model.clearSelection()
+        for item in items:
+            model.select(self.model.indexFromItem(item),
+                         QtCore.QItemSelectionModel.Select)
+
+
+class TestSelectedNodes(CrossPackageTest):
+    def test_reports_the_selected_node(self):
+        a = self.addNode("srcA")
+        self.select(a)
+        self.assertEqual(self.mode.selectedNodes(), ["srcA"])
+
+    def test_reports_several_in_tree_order(self):
+        a = self.addNode("srcA")
+        b = self.addNode("srcB")
+        self.select(a, b)
+        self.assertEqual(self.mode.selectedNodes(), ["srcA", "srcB"])
+
+    def test_empty_when_nothing_is_selected(self):
+        self.addNode("srcA")
+        self.assertEqual(self.mode.selectedNodes(), [])
+
+    def test_skips_rows_whose_node_no_longer_exists(self):
+        """A row can outlive its node between a delete and the next updateTree."""
+        a = self.addNode("srcA")
+        self.select(a)
+        self.graph.deleteNode("srcA")
+        self.assertEqual(self.mode.selectedNodes(), [])
+
+    def test_structural_rows_contribute_nothing(self):
+        self.select(self.category)
+        self.assertEqual(self.mode.selectedNodes(), [])
+
+
+class TestSelectedNodeLines(CrossPackageTest):
+    """The Mu-facing entry point: one node per line."""
+
+    def test_single_node(self):
+        a = self.addNode("srcA")
+        self.select(a)
+        self.assertEqual(self.sm.selectedNodeLines(), "srcA")
+
+    def test_several_nodes_are_newline_separated(self):
+        a = self.addNode("srcA")
+        b = self.addNode("srcB")
+        self.select(a, b)
+        self.assertEqual(self.sm.selectedNodeLines(), "srcA\nsrcB")
+
+    def test_empty_selection_is_the_empty_string(self):
+        self.addNode("srcA")
+        self.assertEqual(self.sm.selectedNodeLines(), "")
+
+    def test_no_mode_loaded_is_the_empty_string(self):
+        """"" is the signal that makes the Mu side fall back to the event."""
+        self.sm._theMode = None
+        self.assertEqual(self.sm.selectedNodeLines(), "")
+
+    def test_round_trips_through_the_mu_split(self):
+        """The Mu helper does content.split("\\n") and drops empties."""
+        a = self.addNode("srcA")
+        b = self.addNode("srcB")
+        self.select(a, b)
+
+        content = self.sm.selectedNodeLines()
+        recovered = [n for n in content.split("\n") if n != ""]
+
+        self.assertEqual(recovered, self.mode.selectedNodes())
+
+    def test_empty_round_trip_yields_no_nodes(self):
+        self.addNode("srcA")
+        recovered = [n for n in self.sm.selectedNodeLines().split("\n") if n != ""]
+        self.assertEqual(recovered, [])
+
+    def test_node_names_never_contain_a_newline(self):
+        """The encoding is only unambiguous because RV node names cannot."""
+        a = self.addNode("srcA")
+        self.select(a)
+        self.assertNotIn("\n", self.mode.selectedNodes()[0])
+
+
+class TestSelectedNodesEvent(CrossPackageTest):
+    """The fallback path, used when the Mu implementation is the loaded one."""
+
+    class _Event:
+        def __init__(self):
+            self.returned = None
+
+        def setReturnContent(self, content):
+            self.returned = content
+
+    def test_answers_with_the_same_encoding(self):
+        a = self.addNode("srcA")
+        b = self.addNode("srcB")
+        self.select(a, b)
+
+        event = self._Event()
+        self.mode.selectedNodesEvent(event)
+
+        self.assertEqual(event.returned, "srcA\nsrcB")
+
+    def test_answers_empty_for_no_selection(self):
+        self.addNode("srcA")
+        event = self._Event()
+        self.mode.selectedNodesEvent(event)
+        self.assertEqual(event.returned, "")
+
+    def test_agrees_with_selectedNodeLines(self):
+        """Both entry points must never disagree, or the two callers diverge."""
+        a = self.addNode("srcA")
+        self.select(a)
+
+        event = self._Event()
+        self.mode.selectedNodesEvent(event)
+
+        self.assertEqual(event.returned, self.sm.selectedNodeLines())
+
+
+class TestMuCallerGlueIsWired(unittest.TestCase):
+    """The Mu side must actually call the entry point, and keep its fallback."""
+
+    CALLERS = (
+        "src/plugins/rv-packages/rvnuke/rvnuke_mode.mu.in",
+        "src/plugins/rv-packages/maya_tools/maya_tools.mu.in",
+    )
+
+    def _read(self, rel):
+        import os
+
+        root = os.path.abspath(
+            os.path.join(_rv_stubs.PKG_DIR, "..", "..", "..", "..")
+        )
+        return open(os.path.join(root, rel)).read()
+
+    def test_neither_caller_requires_session_manager_any_more(self):
+        for rel in self.CALLERS:
+            self.assertNotIn("require session_manager;", self._read(rel), rel)
+
+    def test_both_callers_ask_the_python_mode_first(self):
+        for rel in self.CALLERS:
+            self.assertIn("selectedNodeLines", self._read(rel), rel)
+
+    def test_both_callers_keep_the_event_fallback(self):
+        for rel in self.CALLERS:
+            self.assertIn("session-manager-selected-nodes", self._read(rel), rel)
+
+    def test_both_callers_split_on_newline(self):
+        for rel in self.CALLERS:
+            self.assertIn('content.split("\\n")', self._read(rel), rel)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_edit_mode_factories.py b/src/test/golden/session_manager/unit/test_edit_mode_factories.py
new file mode 100644
index 000000000..600a32e7f
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_edit_mode_factories.py
@@ -0,0 +1,253 @@
+"""Gate 5 — `createMode()` and `auxFilePath()` for all eleven sibling modes.
+
+Every sibling module ends in a `createMode()` that RV's package loader calls by name,
+and the constructor it runs is the mode's whole registration: the name RV files it
+under, the event bindings, the menu, and the sort key that decides where in the event
+chain the mode sits. None of that is observable from a golden — a mode that registers
+under the wrong name or silently drops an event binding still starts RV cleanly and
+still renders an identical first frame. It only shows up later, as an editor tab that
+never refreshes or a manipulator that stops receiving pointer events.
+
+So the expectations below are transcribed from the `.mu` originals rather than from
+the ports, and `_rv_stubs`' MinorMode retains what `init()` was handed so they can be
+read back.
+
+Two deliberate deviations are pinned as such:
+
+* `RetimeGroup_edit_mode` binds one event the Mu version does not. Mu's prompts are
+  blocking modal dialogs; the port drives the same prompts through RV's non-blocking
+  text entry, which needs a commit event to apply the value.
+* `LayoutGroup_edit_mode` and `SourceGroup_edit_mode` call `self.auxFilePath()` where
+  Mu calls `manager.auxFilePath()`. `supportPath()` resolves off the calling module's
+  own file and every sibling is staged into the same directory, so both spell the same
+  path — asserted here rather than assumed.
+"""
+from __future__ import annotations
+
+import os
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+#
+#  module, class, global bindings, override bindings, menu?, sort key, .ui file.
+#  Bindings and sort keys transcribed from the init() call in the matching .mu.
+#
+MODES = [
+    (
+        "Composite_edit_mode", "CompositeEditMode",
+        [],
+        ["session-manager-load-ui", "graph-state-change"],
+        True, "b", "composite.ui",
+    ),
+    (
+        "FolderGroup_edit_mode", "FolderGroupEditMode",
+        [],
+        ["session-manager-load-ui", "graph-state-change"],
+        False, None, None,
+    ),
+    (
+        "LayoutGroup_edit_mode", "LayoutGroupEditMode",
+        ["session-manager-load-ui", "graph-state-change"],
+        [],
+        True, "a", "layout.ui",
+    ),
+    (
+        "RetimeGroup_edit_mode", "RetimeGroupEditMode",
+        [],
+        ["session-manager-load-ui", "graph-state-change"],
+        True, None, "retime.ui",
+    ),
+    (
+        "SequenceGroup_edit_mode", "SequenceGroupEditMode",
+        [],
+        ["session-manager-load-ui", "range-changed", "image-structure-change",
+         "before-session-read", "after-session-read", "graph-state-change"],
+        True, None, "sequence.ui",
+    ),
+    (
+        "SourceGroup_edit_mode", "SourceGroupEditMode",
+        [],
+        ["new-in-point", "new-out-point", "session-manager-load-ui",
+         "graph-state-change"],
+        True, None, "source.ui",
+    ),
+    (
+        "StackGroup_edit_mode", "StackGroupEditMode",
+        [],
+        ["graph-state-change"],
+        True, None, None,
+    ),
+    (
+        "Stack_edit_mode", "StackEditMode",
+        [],
+        ["session-manager-load-ui", "range-changed", "image-structure-change",
+         "graph-state-change"],
+        False, "z", "stack.ui",
+    ),
+    (
+        "SwitchGroup_edit_mode", "SwitchGroupEditMode",
+        [],
+        [],
+        False, None, None,
+    ),
+    (
+        "Switch_edit_mode", "SwitchEditMode",
+        [],
+        ["session-manager-load-ui", "range-changed", "image-structure-change",
+         "graph-state-change"],
+        True, "z0", "switch.ui",
+    ),
+    (
+        "transform_manip", "TransformManip",
+        [],
+        ["pointer--move", "pointer-1--push", "pointer-1--drag", "pointer-1--release",
+         "graph-node-inputs-changed", "after-graph-view-change",
+         "before-graph-view-change", "stylus-pen--move", "stylus-pen--push",
+         "stylus-pen--drag", "stylus-pen--release"],
+        True, "zza", None,
+    ),
+]
+
+#
+#  Mu's RetimeGroup has no equivalent; see the module docstring.
+#
+EXTRA_BINDINGS = {"RetimeGroup_edit_mode": ["retime-group-text-entry-commit"]}
+
+
+def _events(bindings):
+    return [b[0] for b in (bindings or [])]
+
+
+class FactoryTest(unittest.TestCase):
+    def build(self, moduleName, className):
+        mod, graph = _rv_stubs.importPort(moduleName)
+        mode = mod.createMode()
+        self.assertIsInstance(mode, getattr(mod, className))
+        return mod, graph, mode
+
+
+class TestCreateMode(FactoryTest):
+    def test_each_factory_returns_its_own_mode(self):
+        for moduleName, className, _g, _o, _m, _s, _ui in MODES:
+            with self.subTest(module=moduleName):
+                self.build(moduleName, className)
+
+    def test_each_mode_registers_under_its_module_name(self):
+        """RV looks the mode up by this string; a typo makes it unreachable."""
+        for moduleName, className, _g, _o, _m, _s, _ui in MODES:
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                self.assertEqual(mode._modeName, moduleName)
+
+    def test_global_bindings_match_the_mu_original(self):
+        for moduleName, className, glob, _o, _m, _s, _ui in MODES:
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                self.assertEqual(_events(mode._globalBindings), glob)
+
+    def test_override_bindings_match_the_mu_original(self):
+        for moduleName, className, _g, override, _m, _s, _ui in MODES:
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                expected = override + EXTRA_BINDINGS.get(moduleName, [])
+                self.assertEqual(_events(mode._overrideBindings), expected)
+
+    def test_every_binding_is_a_callable_with_a_description(self):
+        for moduleName, className, _g, _o, _m, _s, _ui in MODES:
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                bindings = list(mode._globalBindings or []) + list(
+                    mode._overrideBindings or [])
+                for event, func, doc in bindings:
+                    self.assertTrue(callable(func), "%s: %s" % (moduleName, event))
+                    self.assertIsInstance(doc, str)
+
+    def test_sort_keys_match_the_mu_original(self):
+        """Ordering is what keeps the manipulator's screen-covering events last."""
+        for moduleName, className, _g, _o, _m, sortKey, _ui in MODES:
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                self.assertEqual(mode._sortKey, sortKey)
+
+    def test_modes_that_ship_a_menu_ship_a_non_empty_one(self):
+        for moduleName, className, _g, _o, hasMenu, _s, _ui in MODES:
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                if hasMenu:
+                    self.assertTrue(mode._menu)
+                else:
+                    self.assertFalse(mode._menu)
+
+    def test_stack_registers_no_menu_at_construction(self):
+        """Mu passes `nil, //menu()` — the entry is built later by updateMenu(),
+        because the top-level label depends on whether the view is a stack or a
+        layout. Registering it here would freeze the wrong label."""
+        _mod, _graph, mode = self.build("Stack_edit_mode", "StackEditMode")
+        self.assertIsNone(mode._menu)
+
+    def test_a_second_mode_is_a_distinct_object(self):
+        mod, _graph = _rv_stubs.importPort("Switch_edit_mode")
+        self.assertIsNot(mod.createMode(), mod.createMode())
+
+
+class TestAuxFilePath(FactoryTest):
+    def test_resolves_to_a_file_that_exists_in_the_package(self):
+        for moduleName, className, _g, _o, _m, _s, uiFile in MODES:
+            if uiFile is None:
+                continue
+            with self.subTest(module=moduleName):
+                _mod, _graph, mode = self.build(moduleName, className)
+                path = mode.auxFilePath(uiFile)
+                self.assertTrue(os.path.isfile(path), path)
+
+    def test_the_modes_without_their_own_go_through_the_session_manager(self):
+        """FolderGroup defines no auxFilePath of its own — Mu does not either. It
+        reaches folder.ui through the manager, so that path is what has to resolve."""
+        mod, _graph = _rv_stubs.importPort("FolderGroup_edit_mode")
+        self.assertFalse(hasattr(mod.createMode(), "auxFilePath"))
+
+        import session_manager
+        manager = session_manager.SessionManagerMode.__new__(
+            session_manager.SessionManagerMode)
+        self.assertTrue(os.path.isfile(manager.auxFilePath("folder.ui")))
+
+    def test_every_mode_resolves_to_the_same_support_directory(self):
+        """Six siblings ask the session manager for the path and two ask themselves;
+        both spellings have to land in one directory or half the editors load no UI."""
+        dirs = set()
+        for moduleName, className, _g, _o, _m, _s, _ui in MODES:
+            _mod, _graph, mode = self.build(moduleName, className)
+            if hasattr(mode, "auxFilePath"):
+                dirs.add(os.path.dirname(mode.auxFilePath("x.ui")))
+        self.assertEqual(len(dirs), 1, dirs)
+
+    def test_the_name_is_appended_not_substituted(self):
+        _mod, _graph, mode = self.build("Stack_edit_mode", "StackEditMode")
+        self.assertTrue(mode.auxFilePath("stack.ui").endswith(os.sep + "stack.ui"))
+
+    def test_a_name_that_does_not_exist_still_returns_a_path(self):
+        """auxFilePath is a join, not a lookup; loadUIFile is what fails on a typo."""
+        _mod, _graph, mode = self.build("Stack_edit_mode", "StackEditMode")
+        path = mode.auxFilePath("no_such_file.ui")
+        self.assertFalse(os.path.exists(path))
+        self.assertTrue(path.endswith("no_such_file.ui"))
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_edit_mode_menus.py b/src/test/golden/session_manager/unit/test_edit_mode_menus.py
new file mode 100644
index 000000000..14a2ebf9e
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_edit_mode_menus.py
@@ -0,0 +1,501 @@
+"""Gate 5 — the per-view menus the sibling edit modes contribute.
+
+Each of these modes adds one submenu to the menu bar while its view type is current,
+and every item in it is a `(label, func, key, stateFunc)` tuple built by the
+`menuItem()` shim. Two things can go wrong silently: the item can be wired to the
+wrong toggle, and its state function can report the wrong check mark. Neither shows
+up in a golden — the panel screenshot does not include the menu bar, and RV's menus
+cannot be opened headlessly (`QMenu.exec` blocks), which is why COVERAGE.md lists the
+context menu under headless limitations. So the menu tables are walked here directly.
+
+The toggles themselves are the other half: `alignStartFrames`, `useCutInfo`,
+`strictFrameRanges`, `autoRetimeInputs` and `autoEDL` are one-line property flips, and
+the bug they are prone to is flipping the wrong property or writing an absolute value
+instead of the complement — both of which are invisible until a session is reloaded.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Event:
+    def __init__(self, contents=""):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+def labels(items):
+    """Item labels of a menu, separators included as their "_" marker."""
+    return [i[0] for i in items]
+
+
+def itemNamed(items, label):
+    for i in items:
+        if i[0] == label:
+            return i
+    raise AssertionError("no menu item %r in %r" % (label, labels(items)))
+
+
+class MenuTest(unittest.TestCase):
+    MODULE = None
+    CLASS = None
+    NODE_TYPE = None
+    GROUP_TYPE = None
+
+    def setUp(self):
+        if self.MODULE is None:
+            self.skipTest("base class")
+        self.mod, self.graph = _rv_stubs.importPort(self.MODULE)
+        self.mode = getattr(self.mod, self.CLASS).__new__(getattr(self.mod, self.CLASS))
+        self.mode._ui = None
+        self.mode._uiInFlux = False
+
+        self.graph.addNode("group", self.GROUP_TYPE)
+        self.graph.addNode("node", self.NODE_TYPE, group="group")
+        self.graph.viewNode = "group"
+
+    def submenu(self):
+        menu = self.mode.menu()
+        self.assertEqual(len(menu), 1, "each mode contributes exactly one submenu")
+        return menu[0][0], menu[0][1]
+
+    def ints(self, name):
+        return self.graph.getIntProperty(name)
+
+
+class TestStackMenu(MenuTest):
+    MODULE = "Stack_edit_mode"
+    CLASS = "StackEditMode"
+    GROUP_TYPE = "RVStackGroup"
+    NODE_TYPE = "RVStack"
+
+    def test_submenu_is_titled_stack_for_a_stack_view(self):
+        title, _items = self.submenu()
+        self.assertEqual(title, "Stack")
+
+    def test_submenu_is_titled_layout_for_a_layout_view(self):
+        """The same mode serves both view types; Mu picks the label off nodeType."""
+        self.graph.addNode("lay", "RVLayoutGroup")
+        self.graph.viewNode = "lay"
+        title, _items = self.submenu()
+        self.assertEqual(title, "Layout")
+
+    def test_the_four_toggles_are_present_in_order(self):
+        _title, items = self.submenu()
+        self.assertEqual(labels(items), [
+            "_",
+            "Align Start Frames",
+            "Use Source Cut Info",
+            "Automatically Retime Inputs",
+            "Use Strict Frame Ranges",
+        ])
+
+    def test_each_item_activates_its_own_toggle(self):
+        _title, items = self.submenu()
+        for label, prop in (
+            ("Align Start Frames", "node.mode.alignStartFrames"),
+            ("Use Source Cut Info", "node.mode.useCutInfo"),
+            ("Use Strict Frame Ranges", "node.mode.strictFrameRanges"),
+        ):
+            with self.subTest(label=label):
+                self.graph.seedInt(prop, [0])
+                itemNamed(items, label)[1](_Event())
+                self.assertEqual(self.ints(prop), [1])
+
+    def test_retime_item_flips_the_view_timing_property(self):
+        self.graph.seedInt("group.timing.retimeInputs", [0])
+        _title, items = self.submenu()
+        itemNamed(items, "Automatically Retime Inputs")[1](_Event())
+        self.assertEqual(self.ints("group.timing.retimeInputs"), [1])
+
+    def test_state_functions_report_the_current_flag(self):
+        _title, items = self.submenu()
+        self.graph.seedInt("node.mode.alignStartFrames", [0])
+        self.assertEqual(itemNamed(items, "Align Start Frames")[3](),
+                         self.mod.commands.UncheckedMenuState)
+        self.graph.seedInt("node.mode.alignStartFrames", [1])
+        self.assertEqual(itemNamed(items, "Align Start Frames")[3](),
+                         self.mod.commands.CheckedMenuState)
+
+    def test_state_functions_are_not_shared_between_items(self):
+        """One `name` captured by reference would make all four report the same."""
+        _title, items = self.submenu()
+        self.graph.seedInt("node.mode.alignStartFrames", [1])
+        self.graph.seedInt("node.mode.useCutInfo", [0])
+        self.assertEqual(itemNamed(items, "Align Start Frames")[3](),
+                         self.mod.commands.CheckedMenuState)
+        self.assertEqual(itemNamed(items, "Use Source Cut Info")[3](),
+                         self.mod.commands.UncheckedMenuState)
+
+    def test_align_start_frames_toggles_rather_than_sets(self):
+        self.graph.seedInt("node.mode.alignStartFrames", [1])
+        self.mode.alignStartFrames(_Event())
+        self.assertEqual(self.ints("node.mode.alignStartFrames"), [0])
+
+    def test_strict_frame_ranges_toggles_rather_than_sets(self):
+        self.graph.seedInt("node.mode.strictFrameRanges", [1])
+        self.mode.strictFrameRanges(_Event())
+        self.assertEqual(self.ints("node.mode.strictFrameRanges"), [0])
+
+    def test_use_cut_info_toggles_rather_than_sets(self):
+        self.graph.seedInt("node.mode.useCutInfo", [1])
+        self.mode.useCutInfo(_Event())
+        self.assertEqual(self.ints("node.mode.useCutInfo"), [0])
+
+    def test_auto_retime_inputs_toggles_rather_than_sets(self):
+        self.graph.seedInt("group.timing.retimeInputs", [1])
+        self.mode.autoRetimeInputs(_Event())
+        self.assertEqual(self.ints("group.timing.retimeInputs"), [0])
+
+    def test_retime_state_reads_the_view_not_the_stack(self):
+        self.graph.seedInt("group.timing.retimeInputs", [1])
+        self.assertEqual(self.mode.retimeState(),
+                         self.mod.commands.CheckedMenuState)
+        self.graph.seedInt("group.timing.retimeInputs", [0])
+        self.assertEqual(self.mode.retimeState(),
+                         self.mod.commands.UncheckedMenuState)
+
+    def test_state_func_names_the_property_it_is_given(self):
+        self.graph.seedInt("node.mode.useCutInfo", [1])
+        self.assertEqual(self.mode.stateFunc("useCutInfo")(),
+                         self.mod.commands.CheckedMenuState)
+
+    def test_update_menu_installs_the_current_menu(self):
+        """The label depends on the view type, so the menu is rebuilt, not cached."""
+        self.mode._menu = None
+        self.mode.updateMenu()
+        self.assertEqual(self.mode._menu[0][0], "Stack")
+
+        self.graph.addNode("lay", "RVLayoutGroup")
+        self.graph.viewNode = "lay"
+        self.mode.updateMenu()
+        self.assertEqual(self.mode._menu[0][0], "Layout")
+
+    def test_disabled_category_blocks_the_toggle(self):
+        """menuItem() gates on the event category; live review turns it off."""
+        self.graph.enabledCategories = []
+        self.graph.seedInt("node.mode.alignStartFrames", [0])
+        _title, items = self.submenu()
+        itemNamed(items, "Align Start Frames")[1](_Event())
+        self.assertEqual(self.ints("node.mode.alignStartFrames"), [0])
+        self.assertEqual(itemNamed(items, "Align Start Frames")[3](),
+                         self.mod.commands.DisabledMenuState)
+
+    def test_update_ui_event_rejects_then_updates(self):
+        """Rejecting first is what lets the other range-changed handlers run."""
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        event = _Event()
+        self.mode.updateUIEvent(event)
+        self.assertTrue(event.rejected)
+        self.assertEqual(calls, [1])
+
+    def test_property_change_on_a_watched_name_updates(self):
+        calls = []
+        self.mode._ui = object()
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVStack.mode.alignStartFrames"))
+        self.assertEqual(calls, [1])
+
+    def test_property_change_is_ignored_without_a_panel(self):
+        calls = []
+        self.mode._ui = None
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVStack.mode.alignStartFrames"))
+        self.assertEqual(calls, [])
+
+    def test_property_change_on_an_unwatched_name_is_ignored(self):
+        calls = []
+        self.mode._ui = object()
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVStack.mode.somethingElse"))
+        self.assertEqual(calls, [])
+
+    def test_property_change_always_rejects(self):
+        self.mode._ui = None
+        event = _Event("#RVStack.mode.alignStartFrames")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+    def test_activate_marks_the_mode_active(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+
+
+class TestSwitchMenu(MenuTest):
+    MODULE = "Switch_edit_mode"
+    CLASS = "SwitchEditMode"
+    GROUP_TYPE = "RVSwitchGroup"
+    NODE_TYPE = "RVSwitch"
+
+    def test_submenu_is_titled_switch(self):
+        title, _items = self.submenu()
+        self.assertEqual(title, "Switch")
+
+    def test_it_has_the_two_toggles_and_no_separator(self):
+        """Unlike Stack and Sequence, Mu's Switch menu opens with no menuSeparator."""
+        _title, items = self.submenu()
+        self.assertEqual(labels(items),
+                         ["Align Start Frames", "Use Source Cut Info"])
+
+    def test_each_item_activates_its_own_toggle(self):
+        _title, items = self.submenu()
+        for label, prop in (
+            ("Align Start Frames", "node.mode.alignStartFrames"),
+            ("Use Source Cut Info", "node.mode.useCutInfo"),
+        ):
+            with self.subTest(label=label):
+                self.graph.seedInt(prop, [0])
+                itemNamed(items, label)[1](_Event())
+                self.assertEqual(self.ints(prop), [1])
+
+    def test_toggles_flip_rather_than_set(self):
+        self.graph.seedInt("node.mode.alignStartFrames", [1])
+        self.mode.alignStartFrames(_Event())
+        self.assertEqual(self.ints("node.mode.alignStartFrames"), [0])
+
+        self.graph.seedInt("node.mode.useCutInfo", [1])
+        self.mode.useCutInfo(_Event())
+        self.assertEqual(self.ints("node.mode.useCutInfo"), [0])
+
+    def test_state_func_tracks_the_flag(self):
+        self.graph.seedInt("node.mode.useCutInfo", [0])
+        self.assertEqual(self.mode.stateFunc("useCutInfo")(),
+                         self.mod.commands.UncheckedMenuState)
+        self.graph.seedInt("node.mode.useCutInfo", [1])
+        self.assertEqual(self.mode.stateFunc("useCutInfo")(),
+                         self.mod.commands.CheckedMenuState)
+
+    def test_retime_state_reads_the_view_timing_property(self):
+        self.graph.seedInt("group.timing.retimeInputs", [1])
+        self.assertEqual(self.mode.retimeState(),
+                         self.mod.commands.CheckedMenuState)
+
+    def test_update_menu_installs_the_menu(self):
+        self.mode._menu = None
+        self.mode.updateMenu()
+        self.assertEqual(self.mode._menu[0][0], "Switch")
+
+    def test_update_ui_event_rejects_then_updates(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        event = _Event()
+        self.mode.updateUIEvent(event)
+        self.assertTrue(event.rejected)
+        self.assertEqual(calls, [1])
+
+    def test_property_change_on_a_watched_name_updates(self):
+        calls = []
+        self.mode._ui = object()
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVSwitch.mode.alignStartFrames"))
+        self.assertEqual(calls, [1])
+
+    def test_property_change_on_an_unwatched_name_is_ignored(self):
+        calls = []
+        self.mode._ui = object()
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVSwitch.mode.unrelated"))
+        self.assertEqual(calls, [])
+
+    def test_property_change_always_rejects(self):
+        event = _Event("#RVSwitch.mode.unrelated")
+        self.mode._ui = object()
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+    def test_activate_marks_the_mode_active(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+
+    def test_size_edits_write_one_axis_each(self):
+        self.graph.seedInt("node.output.size", [100, 50])
+        self.mode._outputWidthEdit = QtWidgets.QLineEdit("640")
+        self.mode._outputHeightEdit = QtWidgets.QLineEdit("480")
+
+        self.mode.widthChanged()
+        self.assertEqual(self.ints("node.output.size"), [640, 50])
+
+        self.mode.heightChanged()
+        self.assertEqual(self.ints("node.output.size"), [640, 480])
+
+
+class TestSequenceMenu(MenuTest):
+    MODULE = "SequenceGroup_edit_mode"
+    CLASS = "SequenceGroupEditMode"
+    GROUP_TYPE = "RVSequenceGroup"
+    NODE_TYPE = "RVSequence"
+
+    def test_submenu_is_titled_sequence(self):
+        title, _items = self.submenu()
+        self.assertEqual(title, "Sequence")
+
+    def test_it_opens_with_a_separator_then_the_two_toggles(self):
+        _title, items = self.submenu()
+        self.assertEqual(labels(items),
+                         ["_", "Auto EDL", "Use Source Cut Info"])
+
+    def test_auto_edl_item_flips_auto_edl(self):
+        self.graph.seedInt("node.mode.autoEDL", [0])
+        _title, items = self.submenu()
+        itemNamed(items, "Auto EDL")[1](_Event())
+        self.assertEqual(self.ints("node.mode.autoEDL"), [1])
+
+    def test_cut_info_item_flips_use_cut_info(self):
+        self.graph.seedInt("node.mode.useCutInfo", [0])
+        _title, items = self.submenu()
+        itemNamed(items, "Use Source Cut Info")[1](_Event())
+        self.assertEqual(self.ints("node.mode.useCutInfo"), [1])
+
+    def test_toggles_flip_rather_than_set(self):
+        self.graph.seedInt("node.mode.autoEDL", [1])
+        self.mode.autoEDL(_Event())
+        self.assertEqual(self.ints("node.mode.autoEDL"), [0])
+
+        self.graph.seedInt("node.mode.useCutInfo", [1])
+        self.mode.useCutInfo(_Event())
+        self.assertEqual(self.ints("node.mode.useCutInfo"), [0])
+
+    def test_state_func_tracks_the_flag(self):
+        self.graph.seedInt("node.mode.autoEDL", [1])
+        self.assertEqual(self.mode.stateFunc("autoEDL")(),
+                         self.mod.commands.CheckedMenuState)
+
+    def test_update_ui_event_rejects_then_updates(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        event = _Event()
+        self.mode.updateUIEvent(event)
+        self.assertTrue(event.rejected)
+        self.assertEqual(calls, [1])
+
+    def test_property_change_on_a_watched_name_updates_and_redraws(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        before = self.graph.redraws
+        self.mode.propertyChanged(_Event("#RVSequence.mode.autoEDL"))
+        self.assertEqual(calls, [1])
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_property_change_on_an_unwatched_name_is_ignored(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        before = self.graph.redraws
+        self.mode.propertyChanged(_Event("#RVSequence.mode.unrelated"))
+        self.assertEqual(calls, [])
+        self.assertEqual(self.graph.redraws, before)
+
+    def test_property_change_always_rejects(self):
+        event = _Event("#RVSequence.mode.unrelated")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+    def test_activate_marks_the_mode_active(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+
+
+class TestCompositeMenu(unittest.TestCase):
+    """Composite builds its menu inline in init(), so it is read back off the mode."""
+
+    OPS = ["over", "add", "dissolve", "difference", "-difference", "replace",
+           "topmost"]
+
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("Composite_edit_mode")
+        self.graph.addNode("group", "RVStackGroup")
+        self.graph.addNode("node", "RVStack", group="group")
+        self.graph.viewNode = "group"
+        self.mode = self.mod.createMode()
+
+    def items(self):
+        return self.mode._menu[0][1]
+
+    def test_the_submenu_is_added_to_stack(self):
+        self.assertEqual(self.mode._menu[0][0], "Stack")
+
+    def test_all_seven_operations_are_listed(self):
+        found = [l.strip() for l in labels(self.items()) if l.startswith("   ")]
+        self.assertEqual(found, [
+            "Over", "Add", "Dissolve", "Difference", "Inverted Difference",
+            "Replace", "Topmost",
+        ])
+
+    def test_op_state_checks_only_the_current_operation(self):
+        self.graph.seedString("node.composite.type", ["dissolve"])
+        for op in self.OPS:
+            with self.subTest(op=op):
+                expected = (self.mod.commands.CheckedMenuState if op == "dissolve"
+                            else self.mod.commands.UncheckedMenuState)
+                self.assertEqual(self.mode.opState(op)(), expected)
+
+    def test_op_state_follows_a_change(self):
+        self.graph.seedString("node.composite.type", ["over"])
+        state = self.mode.opState("add")
+        self.assertEqual(state(), self.mod.commands.UncheckedMenuState)
+        self.graph.seedString("node.composite.type", ["add"])
+        self.assertEqual(state(), self.mod.commands.CheckedMenuState)
+
+    def test_each_operation_item_reports_its_own_state(self):
+        """Each menuItem closes over its own op name, not the loop variable."""
+        self.graph.seedString("node.composite.type", ["replace"])
+        checked = [i[0].strip() for i in self.items()
+                   if len(i) > 3 and i[3] is not None
+                   and i[3]() == self.mod.commands.CheckedMenuState]
+        self.assertEqual(checked, ["Replace"])
+
+    def test_the_cycle_items_are_present(self):
+        self.assertIn("Cycle Forward", labels(self.items()))
+        self.assertIn("Cycle Backward", labels(self.items()))
+
+    def test_property_change_on_type_updates_the_panel(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVStack.composite.type"))
+        self.assertEqual(calls, [1])
+
+    def test_property_change_on_dissolve_amount_updates_the_panel(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVStack.composite.dissolveAmount"))
+        self.assertEqual(calls, [1])
+
+    def test_property_change_elsewhere_is_ignored(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVStack.output.fps"))
+        self.assertEqual(calls, [])
+
+    def test_property_change_always_rejects(self):
+        event = _Event("#RVStack.output.fps")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_edit_mode_slots.py b/src/test/golden/session_manager/unit/test_edit_mode_slots.py
new file mode 100644
index 000000000..b62075fb7
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_edit_mode_slots.py
@@ -0,0 +1,876 @@
+"""Gate 5 — the widget slots and event wrappers of the four panel-heavy edit modes.
+
+`test_layout_group_edit_mode.py` and friends already cover the property-facing half
+of these modes (`setLayoutMode`, `reset`, `setCutValue`, …). What is left, and what
+this module covers, is the layer between a widget signal and that half: the `*Slot`
+methods a `.ui` file connects to, the `*Event` one-liners the menu items are bound
+to, and the `activate`/`deactivate` pairs that switch sibling modes on and off.
+
+They look trivial enough to skip, which is exactly the risk. A slot that reads the
+wrong line edit, an event wrapper bound to the neighbouring action, or an
+`activate()` that forgets `activateUI(True)` all leave the panel looking right and
+the graph wrong, and none of it is visible in a golden screenshot.
+
+The sibling-mode activations go through `rv.runtime.eval` — the mode manager has no
+Python binding — so the assertions there are on the Mu snippet, as in
+`test_group_edit_modes.py`.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Event:
+    def __init__(self, contents=""):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+class SlotTest(unittest.TestCase):
+    MODULE = None
+    CLASS = None
+
+    def setUp(self):
+        if self.MODULE is None:
+            self.skipTest("base class")
+        self.mod, self.graph = _rv_stubs.importPort(self.MODULE)
+        self.evals = []
+        self.mod.rv.runtime.eval = lambda code, mods=None: (
+            self.evals.append(code) or "")
+        self.mode = getattr(self.mod, self.CLASS).__new__(getattr(self.mod, self.CLASS))
+        self.mode._ui = None
+        self.build()
+
+    def build(self):
+        pass
+
+    def allCode(self):
+        return "\n".join(self.evals)
+
+    def ints(self, name):
+        return self.graph.getIntProperty(name)
+
+    def floats(self, name):
+        return self.graph.getFloatProperty(name)
+
+    def strings(self, name):
+        return self.graph.getStringProperty(name)
+
+
+# ----------------------------------------------------------------- Layout ----
+
+
+class LayoutSlotTest(SlotTest):
+    MODULE = "LayoutGroup_edit_mode"
+    CLASS = "LayoutGroupEditMode"
+
+    def build(self):
+        self.graph.addNode("group", "RVLayoutGroup")
+        self.graph.viewNode = "group"
+        self.graph.seedString("group.layout.mode", ["packed"])
+        self.graph.seedFloat("group.layout.spacing", [1.0])
+        self.graph.seedInt("group.layout.gridRows", [0])
+        self.graph.seedInt("group.layout.gridColumns", [0])
+
+        self.mode._gridRowsLineEdit = QtWidgets.QLineEdit("0")
+        self.mode._gridColumnsLineEdit = QtWidgets.QLineEdit("0")
+
+
+class TestLayoutSlots(LayoutSlotTest):
+    def test_spacing_slider_maps_the_full_track_to_half_to_one(self):
+        """The slider is 0..999 and the property is 0.5..1.0; both ends must land."""
+        self.mode.spacingSliderChangedSlot(0)
+        self.assertAlmostEqual(self.floats("group.layout.spacing")[0], 0.5)
+
+        self.mode.spacingSliderChangedSlot(999)
+        self.assertAlmostEqual(self.floats("group.layout.spacing")[0], 1.0)
+
+    def test_spacing_slider_midpoint(self):
+        self.mode.spacingSliderChangedSlot(500)
+        self.assertAlmostEqual(self.floats("group.layout.spacing")[0], 0.75,
+                               places=3)
+
+    def test_grid_rows_slot_writes_rows_and_zeroes_columns(self):
+        """Mu passes 0 for the other axis so the layout solves for it."""
+        self.mode._gridRowsLineEdit.setText("3")
+        self.mode.gridRowsChangedSlot()
+        self.assertEqual(self.ints("group.layout.gridRows"), [3])
+        self.assertEqual(self.ints("group.layout.gridColumns"), [0])
+
+    def test_grid_columns_slot_writes_columns_and_zeroes_rows(self):
+        self.mode._gridColumnsLineEdit.setText("4")
+        self.mode.gridColumnsChangedSlot()
+        self.assertEqual(self.ints("group.layout.gridColumns"), [4])
+        self.assertEqual(self.ints("group.layout.gridRows"), [0])
+
+    def test_either_grid_slot_switches_the_layout_to_grid(self):
+        self.mode._gridRowsLineEdit.setText("2")
+        self.mode.gridRowsChangedSlot()
+        self.assertEqual(self.strings("group.layout.mode"), ["grid"])
+
+    def test_grid_slots_redraw(self):
+        before = self.graph.redraws
+        self.mode._gridRowsLineEdit.setText("2")
+        self.mode.gridRowsChangedSlot()
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_mode_combo_index_selects_the_matching_layout(self):
+        """The combo order is fixed by layout.ui; an off-by-one silently reorders."""
+        for index, mode in enumerate(
+            ["packed", "packed2", "row", "column", "grid", "manual"]
+        ):
+            with self.subTest(index=index):
+                self.mode.modeComboChangedSlot(index)
+                self.assertEqual(self.strings("group.layout.mode"), [mode])
+
+    def test_an_index_past_the_end_falls_back_to_static(self):
+        self.mode.modeComboChangedSlot(99)
+        self.assertEqual(self.strings("group.layout.mode"), ["static"])
+
+
+class TestLayoutMenuEvents(LayoutSlotTest):
+    EVENTS = [
+        ("layoutPackedEvent", "packed"),
+        ("layoutPacked2Event", "packed2"),
+        ("layoutInRowEvent", "row"),
+        ("layoutInColumnEvent", "column"),
+        ("layoutInGridEvent", "grid"),
+        ("layoutManuallyEvent", "manual"),
+        ("layoutStaticEvent", "static"),
+    ]
+
+    def test_each_event_wrapper_selects_its_own_layout(self):
+        for method, mode in self.EVENTS:
+            with self.subTest(method=method):
+                getattr(self.mode, method)(_Event())
+                self.assertEqual(self.strings("group.layout.mode"), [mode])
+
+    def test_the_menu_items_are_wired_to_those_wrappers(self):
+        items = self.mode.menu()[0][1]
+        byLabel = {i[0].strip(): i for i in items}
+        for label, mode in (
+            ("Packed", "packed"),
+            ("Packed With Fluid Layout", "packed2"),
+            ("Row", "row"),
+            ("Column", "column"),
+            ("Grid", "grid"),
+            ("Manual", "manual"),
+            ("Static", "static"),
+        ):
+            with self.subTest(label=label):
+                byLabel[label][1](_Event())
+                self.assertEqual(self.strings("group.layout.mode"), [mode])
+
+    def test_the_menu_checks_only_the_current_layout(self):
+        self.mode.setLayoutMode("column")
+        items = self.mode.menu()[0][1]
+        checked = [i[0].strip() for i in items
+                   if len(i) > 3 and i[3] is not None
+                   and i[3]() == self.mod.commands.CheckedMenuState]
+        self.assertEqual(checked, ["Column"])
+
+
+class TestLayoutActivation(LayoutSlotTest):
+    def test_activate_turns_on_the_stack_and_composite_editors(self):
+        self.mode.activate()
+        self.assertIn('findModeEntry("Stack_edit_mode")', self.allCode())
+        self.assertIn('findModeEntry("Composite_edit_mode")', self.allCode())
+
+    def test_activate_marks_the_mode_active(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+
+    def test_deactivate_turns_them_back_off(self):
+        self.mode._active = True
+        self.mode.deactivate()
+        self.assertFalse(self.mode._active)
+        self.assertIn("false", self.allCode())
+
+    def test_manual_layout_brings_up_the_transform_manipulator(self):
+        """This is the only way the manipulator ever appears."""
+        self.mode.setLayoutMode("manual")
+        self.mode.activate()
+        manip = [c for c in self.evals if "transform_manip" in c]
+        self.assertEqual(len(manip), 1)
+        self.assertIn("true", manip[0])
+
+    def test_a_non_manual_layout_leaves_the_manipulator_off(self):
+        self.mode.setLayoutMode("grid")
+        self.mode.activate()
+        manip = [c for c in self.evals if "transform_manip" in c]
+        self.assertEqual(len(manip), 1)
+        self.assertIn("false", manip[0])
+
+    def test_deactivate_always_takes_the_manipulator_down(self):
+        self.mode.setLayoutMode("manual")
+        self.mode.deactivate()
+        manip = [c for c in self.evals if "transform_manip" in c]
+        self.assertIn("false", manip[0])
+
+    def test_activate_transform_mode_names_the_manipulator(self):
+        self.mode.activateTransformMode(True)
+        self.assertEqual(len(self.evals), 1)
+        self.assertIn('findModeEntry("transform_manip")', self.evals[0])
+        self.assertIn("true", self.evals[0])
+
+    def test_activate_ui_leaves_the_manipulator_alone(self):
+        """activate() decides the manipulator separately, off the layout mode."""
+        self.mode.activateUI(True)
+        self.assertNotIn("transform_manip", self.allCode())
+
+
+class TestLayoutPropertyChanged(LayoutSlotTest):
+    def test_a_layout_property_updates_the_panel_and_redraws(self):
+        calls = []
+        self.mode._ui = object()
+        self.mode.updateUI = lambda: calls.append(1)
+        before = self.graph.redraws
+        self.mode.propertyChanged(_Event("#RVLayoutGroup.layout.spacing"))
+        self.assertEqual(calls, [1])
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_it_is_ignored_without_a_panel(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVLayoutGroup.layout.spacing"))
+        self.assertEqual(calls, [])
+
+    def test_a_non_layout_component_is_ignored(self):
+        calls = []
+        self.mode._ui = object()
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVLayoutGroup.output.fps"))
+        self.assertEqual(calls, [])
+
+    def test_it_always_rejects(self):
+        event = _Event("#RVLayoutGroup.output.fps")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+# ----------------------------------------------------------------- Retime ----
+
+
+class RetimeSlotTest(SlotTest):
+    MODULE = "RetimeGroup_edit_mode"
+    CLASS = "RetimeGroupEditMode"
+
+    def build(self):
+        self.graph.addNode("group", "RVRetimeGroup")
+        self.graph.addNode("retime", "RVRetime", group="group")
+        self.graph.viewNode = "group"
+        self.graph.seedFloat("retime.visual.scale", [1.0])
+        self.graph.seedFloat("retime.visual.offset", [0.0])
+        self.graph.seedFloat("retime.audio.scale", [1.0])
+        self.graph.seedFloat("retime.audio.offset", [0.0])
+        self.graph.seedFloat("retime.output.fps", [24.0])
+        self.mode._textCommit = None
+
+
+class TestRetimeSlots(RetimeSlotTest):
+    def test_reset_slot_resets_the_timing(self):
+        self.graph.seedFloat("retime.visual.scale", [2.0])
+        self.mode.resetSlot(False)
+        self.assertEqual(self.floats("retime.visual.scale"), [1.0])
+
+    def test_reverse_slot_reverses_the_timing(self):
+        """reverse() aborts partway on a float audio.offset — Mu behavior the port
+        reproduces, pinned in test_retime_group_edit_mode.py. What matters here is
+        that the button slot really does delegate to it: visual.scale flips first."""
+        with self.assertRaises(Exception):
+            self.mode.reverseSlot(False)
+        self.assertEqual(self.floats("retime.visual.scale"), [-1.0])
+
+    def test_the_slots_ignore_the_checked_argument(self):
+        """Qt hands a bool through clicked(bool); Mu's slot takes none."""
+        with self.assertRaises(Exception):
+            self.mode.reverseSlot(True)
+        self.assertEqual(self.floats("retime.visual.scale"), [-1.0])
+
+    def test_reset_timing_event_resets(self):
+        self.graph.seedFloat("retime.visual.scale", [3.0])
+        self.mode.resetTiming(_Event())
+        self.assertEqual(self.floats("retime.visual.scale"), [1.0])
+
+    def test_reverse_timing_event_reverses(self):
+        with self.assertRaises(Exception):
+            self.mode.reverseTiming(_Event())
+        self.assertEqual(self.floats("retime.visual.scale"), [-1.0])
+
+    def test_edit_slot_writes_the_line_edits_value_to_its_property(self):
+        edit = QtWidgets.QLineEdit("2.5")
+        self.mode.editSlot(edit, ".visual.scale")()
+        self.assertEqual(self.floats("retime.visual.scale"), [2.5])
+
+    def test_edit_slot_binds_one_property_per_line_edit(self):
+        """Four line edits share this factory; a leaked `prop` crosses them."""
+        vscale = QtWidgets.QLineEdit("2")
+        ascale = QtWidgets.QLineEdit("3")
+        fVisual = self.mode.editSlot(vscale, ".visual.scale")
+        fAudio = self.mode.editSlot(ascale, ".audio.scale")
+
+        fVisual()
+        fAudio()
+
+        self.assertEqual(self.floats("retime.visual.scale"), [2.0])
+        self.assertEqual(self.floats("retime.audio.scale"), [3.0])
+
+    def test_edit_slot_on_fps_also_sets_the_session_fps(self):
+        edit = QtWidgets.QLineEdit("30")
+        self.mode.editSlot(edit, ".output.fps")()
+        self.assertEqual(self.graph.fps, 30.0)
+
+    def test_edit_slot_on_a_scale_does_not_touch_the_session_fps(self):
+        edit = QtWidgets.QLineEdit("2")
+        self.mode.editSlot(edit, ".visual.scale")()
+        self.assertEqual(self.graph.fps, 24.0)
+
+    def test_edit_slot_reads_the_line_edit_at_call_time(self):
+        edit = QtWidgets.QLineEdit("1")
+        slot = self.mode.editSlot(edit, ".visual.scale")
+        edit.setText("4")
+        slot()
+        self.assertEqual(self.floats("retime.visual.scale"), [4.0])
+
+
+class TestRetimePrompts(RetimeSlotTest):
+    def test_slow_down_prompt_shows_the_inverted_factor(self):
+        self.graph.seedFloat("retime.visual.scale", [0.5])
+        self.assertEqual(self.mode.slowDownPrompt(),
+                         "Slow Down by Factor (current=2):")
+
+    def test_speed_up_prompt_shows_the_factor_as_is(self):
+        self.graph.seedFloat("retime.visual.scale", [0.5])
+        self.assertEqual(self.mode.speedUpPrompt(),
+                         "Speed Up by Factor (current=0.5):")
+
+    def test_factor_prompt_uses_the_format_it_is_given(self):
+        self.graph.seedFloat("retime.visual.scale", [2.0])
+        self.assertEqual(self.mode.factorPrompt("x=%g", False), "x=2")
+        self.assertEqual(self.mode.factorPrompt("x=%g", True), "x=0.5")
+
+    def test_fps_prompt_shows_the_current_output_fps(self):
+        self.graph.seedFloat("retime.output.fps", [29.97])
+        self.assertEqual(self.mode.fpsPrompt(),
+                         "Convert to FPS (current=29.97):")
+
+    def test_the_prompts_follow_the_property(self):
+        self.graph.seedFloat("retime.output.fps", [24.0])
+        self.assertIn("24", self.mode.fpsPrompt())
+        self.graph.seedFloat("retime.output.fps", [60.0])
+        self.assertIn("60", self.mode.fpsPrompt())
+
+
+class TestRetimeConvertToFPS(RetimeSlotTest):
+    def test_it_writes_the_output_fps(self):
+        self.mode.convertToFPS(_Event(), 30.0)
+        self.assertEqual(self.floats("retime.output.fps"), [24.0],
+                         "with no sources rendered the loop body never runs")
+
+    def test_it_always_sets_the_session_fps(self):
+        self.mode.convertToFPS(_Event(), 30.0)
+        self.assertEqual(self.graph.fps, 30.0)
+
+    def test_with_a_rendered_source_it_writes_the_property_too(self):
+        self.mod.commands.sourcesRendered = lambda: [{"node": "retime"}]
+        self.mode.convertToFPS(_Event(), 59.94)
+        self.assertEqual(self.floats("retime.output.fps"), [59.94])
+
+    def test_the_menu_offers_the_standard_rates(self):
+        mode = self.mod.createMode()
+        retime = mode._menu[0][1]
+        convert = [i for i in retime if i[0] == "Convert to FPS"][0]
+        labels = [i[0] for i in convert[1]]
+        self.assertEqual(
+            labels,
+            ["24", "25", "23.98", "29.97", "30", "59.94", "60", "_", "Custom..."])
+
+
+class TestRetimeTextEntry(RetimeSlotTest):
+    """The port replaces Mu's blocking prompt dialogs with RV's text entry mode.
+
+    That splits each prompt into "start the entry" and "apply what was typed", with
+    the pending callback held on the mode. Losing the callback, or failing to clear
+    it, is the failure mode this covers: a stale callback would apply the next
+    unrelated commit to the wrong property.
+    """
+
+    def test_slow_down_arms_an_inverting_commit(self):
+        self.mode.slowDownFactor(_Event())
+        self.assertIsNotNone(self.mode._textCommit)
+        self.mode.textEntryCommitted(_Event("2"))
+        self.assertEqual(self.floats("retime.visual.scale"), [0.5])
+
+    def test_speed_up_arms_a_direct_commit(self):
+        self.mode.speedUpFactor(_Event())
+        self.mode.textEntryCommitted(_Event("2"))
+        self.assertEqual(self.floats("retime.visual.scale"), [2.0])
+
+    def test_edit_fps_arms_the_fps_commit(self):
+        self.mode.editFPS(_Event())
+        self.mode.textEntryCommitted(_Event("30"))
+        self.assertEqual(self.floats("retime.output.fps"), [30.0])
+        self.assertEqual(self.graph.fps, 30.0)
+
+    def test_the_callback_is_cleared_after_it_runs(self):
+        self.mode.speedUpFactor(_Event())
+        self.mode.textEntryCommitted(_Event("2"))
+        self.assertIsNone(self.mode._textCommit)
+
+    def test_a_commit_with_nothing_armed_is_a_noop(self):
+        before = dict(self.graph.props)
+        self.mode.textEntryCommitted(_Event("2"))
+        self.assertEqual(self.graph.props, before)
+
+    def test_a_second_commit_does_not_reapply_the_first(self):
+        self.mode.speedUpFactor(_Event())
+        self.mode.textEntryCommitted(_Event("2"))
+        self.mode.textEntryCommitted(_Event("8"))
+        self.assertEqual(self.floats("retime.visual.scale"), [2.0])
+
+    def test_arming_a_second_prompt_replaces_the_first(self):
+        self.mode.speedUpFactor(_Event())
+        self.mode.editFPS(_Event())
+        self.mode.textEntryCommitted(_Event("30"))
+        self.assertEqual(self.floats("retime.output.fps"), [30.0])
+        self.assertEqual(self.floats("retime.visual.scale"), [1.0])
+
+    def test_the_raw_edit_items_send_their_own_events(self):
+        for method, event in (
+            ("editVScale", "retime-group-edit-visual-scale"),
+            ("editVOffset", "retime-group-edit-visual-offset"),
+            ("editAScale", "retime-group-edit-audio-scale"),
+            ("editAOffset", "retime-group-edit-audio-offset"),
+        ):
+            with self.subTest(method=method):
+                self.graph.events = []
+                getattr(self.mode, method)(_Event())
+                self.assertEqual([n for n, _c, *_ in self.graph.events], [event])
+
+
+class TestRetimePropertyChanged(RetimeSlotTest):
+    def test_a_retime_node_property_updates_the_panel(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("retime.visual.scale"))
+        self.assertEqual(calls, [1])
+
+    def test_another_nodes_property_is_ignored(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("group.output.fps"))
+        self.assertEqual(calls, [])
+
+    def test_it_always_rejects(self):
+        event = _Event("group.output.fps")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+# ------------------------------------------------------------ SourceGroup ----
+
+
+class SourceSlotTest(SlotTest):
+    MODULE = "SourceGroup_edit_mode"
+    CLASS = "SourceGroupEditMode"
+
+    def build(self):
+        self.graph.addNode("group", "RVSourceGroup")
+        self.graph.addNode("src", "RVFileSource", group="group")
+        self.graph.viewNode = "group"
+        self.MU_INT_MAX = self.mod.MU_INT_MAX
+        self.graph.seedInt("src.cut.in", [-self.MU_INT_MAX])
+        self.graph.seedInt("src.cut.out", [self.MU_INT_MAX])
+        self.graph.seedInt("src.cut.syncGui", [1])
+        self.mode._locked = False
+
+        self.mode._cutInEdit = QtWidgets.QSpinBox()
+        self.mode._cutOutEdit = QtWidgets.QSpinBox()
+        for box in (self.mode._cutInEdit, self.mode._cutOutEdit):
+            box.setRange(-self.MU_INT_MAX, self.MU_INT_MAX)
+
+
+class TestSourceSyncGuiInOut(SourceSlotTest):
+    def test_it_reads_the_flag_when_present(self):
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.assertFalse(self.mode.syncGuiInOut())
+        self.graph.seedInt("src.cut.syncGui", [1])
+        self.assertTrue(self.mode.syncGuiInOut())
+
+    def test_an_absent_flag_defaults_to_synced(self):
+        """Sessions written before the flag existed must still track the GUI."""
+        self.graph.props.pop("src.cut.syncGui")
+        self.assertTrue(self.mode.syncGuiInOut())
+
+    def test_sync_state_mirrors_the_flag_as_a_menu_state(self):
+        self.graph.seedInt("src.cut.syncGui", [1])
+        self.assertEqual(self.mode.syncState(),
+                         self.mod.commands.CheckedMenuState)
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.assertEqual(self.mode.syncState(),
+                         self.mod.commands.UncheckedMenuState)
+
+    def test_the_source_items_are_always_selectable(self):
+        self.assertEqual(self.mode.sourceMenuState(),
+                         self.mod.commands.NeutralMenuState)
+
+
+class TestSourceToggleSync(SourceSlotTest):
+    def test_toggle_turns_syncing_off(self):
+        self.graph.seedInt("src.cut.syncGui", [1])
+        self.mode.toggleSync(_Event())
+        self.assertEqual(self.ints("src.cut.syncGui"), [0])
+
+    def test_toggle_turns_syncing_back_on(self):
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.mode.toggleSync(_Event())
+        self.assertEqual(self.ints("src.cut.syncGui"), [1])
+
+    def test_turning_it_on_pulls_the_gui_to_the_cut(self):
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.graph.seedInt("src.cut.in", [10])
+        self.graph.seedInt("src.cut.out", [20])
+        self.mode.toggleSync(_Event())
+        self.assertEqual((self.graph.inFrame, self.graph.outFrame), (10, 20))
+
+    def test_turning_it_off_leaves_the_gui_where_it_is(self):
+        self.graph.inFrame, self.graph.outFrame = 5, 50
+        self.graph.seedInt("src.cut.syncGui", [1])
+        self.mode.toggleSync(_Event())
+        self.assertEqual((self.graph.inFrame, self.graph.outFrame), (5, 50))
+
+    def test_the_menu_item_is_wired_to_the_toggle(self):
+        mode = self.mod.createMode()
+        items = mode._menu[0][1]
+        byLabel = {i[0]: i for i in items}
+        byLabel["Sync GUI With Source Cut In/Out"][1](_Event())
+        self.assertEqual(self.ints("src.cut.syncGui"), [0])
+
+    def test_the_menu_lists_the_four_source_actions(self):
+        mode = self.mod.createMode()
+        self.assertEqual([i[0] for i in mode._menu[0][1]], [
+            "Set Source Cut In ...",
+            "Set Source Cut Out ...",
+            "Clear Source Cut In/Out",
+            "Sync GUI With Source Cut In/Out",
+        ])
+
+    def test_a_locked_mode_ignores_the_sync_slot(self):
+        """`_locked` is how the mode stops its own writes re-entering."""
+        self.mode._locked = True
+        self.graph.seedInt("src.cut.syncGui", [1])
+        self.mode.syncSlot(False)
+        self.assertEqual(self.ints("src.cut.syncGui"), [1])
+
+
+class TestSourceUpdateFromProps(SourceSlotTest):
+    def test_it_moves_the_gui_to_the_cut_points(self):
+        self.graph.seedInt("src.cut.in", [10])
+        self.graph.seedInt("src.cut.out", [20])
+        self.mode.updateFromProps()
+        self.assertEqual((self.graph.inFrame, self.graph.outFrame), (10, 20))
+
+    def test_it_clamps_to_the_source_range(self):
+        """cut.in defaults to -MU_INT_MAX; unclamped that is not a valid frame."""
+        self.mode.updateFromProps()
+        self.assertEqual((self.graph.inFrame, self.graph.outFrame), (1, 100))
+
+    def test_it_leaves_the_lock_clear(self):
+        self.mode.updateFromProps()
+        self.assertFalse(self.mode._locked)
+
+    def test_activate_pulls_the_gui_across_when_synced(self):
+        self.graph.seedInt("src.cut.in", [10])
+        self.graph.seedInt("src.cut.out", [20])
+        self.mode.activate()
+        self.assertEqual((self.graph.inFrame, self.graph.outFrame), (10, 20))
+        self.assertTrue(self.mode._active)
+
+    def test_activate_leaves_the_gui_alone_when_not_synced(self):
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.graph.seedInt("src.cut.in", [10])
+        self.mode.activate()
+        self.assertEqual(self.graph.inFrame, 1)
+        self.assertTrue(self.mode._active)
+
+
+class TestSourceChangedSlot(SourceSlotTest):
+    def test_it_writes_the_cut_point(self):
+        self.mode.changedSlot("in")(10)
+        self.assertEqual(self.ints("src.cut.in"), [10])
+
+    def test_it_moves_the_gui_when_synced(self):
+        self.mode.changedSlot("in")(10)
+        self.assertEqual(self.graph.inFrame, 10)
+
+    def test_it_leaves_the_gui_alone_when_not_synced(self):
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.mode.changedSlot("in")(10)
+        self.assertEqual(self.ints("src.cut.in"), [10])
+        self.assertEqual(self.graph.inFrame, 1)
+
+    def test_a_value_before_the_source_start_is_rejected(self):
+        self.mode.changedSlot("in")(-5)
+        self.assertEqual(self.ints("src.cut.in"), [-self.MU_INT_MAX])
+
+    def test_a_value_past_the_source_end_is_rejected(self):
+        self.mode.changedSlot("out")(500)
+        self.assertEqual(self.ints("src.cut.out"), [self.MU_INT_MAX])
+
+    def test_an_in_point_past_the_out_point_is_rejected(self):
+        self.graph.outFrame = 20
+        self.mode.changedSlot("in")(30)
+        self.assertEqual(self.ints("src.cut.in"), [-self.MU_INT_MAX])
+
+    def test_an_out_point_before_the_in_point_is_rejected(self):
+        self.graph.inFrame = 30
+        self.mode.changedSlot("out")(20)
+        self.assertEqual(self.ints("src.cut.out"), [self.MU_INT_MAX])
+
+    def test_the_sentinel_is_ignored_but_still_redraws(self):
+        before = self.graph.redraws
+        self.mode.changedSlot("in")(-self.MU_INT_MAX)
+        self.assertEqual(self.ints("src.cut.in"), [-self.MU_INT_MAX])
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_a_locked_mode_ignores_it(self):
+        self.mode._locked = True
+        self.mode.changedSlot("in")(10)
+        self.assertEqual(self.ints("src.cut.in"), [-self.MU_INT_MAX])
+
+    def test_it_leaves_the_lock_clear(self):
+        self.mode.changedSlot("in")(10)
+        self.assertFalse(self.mode._locked)
+
+    def test_the_two_slots_do_not_share_their_prop(self):
+        fIn = self.mode.changedSlot("in")
+        fOut = self.mode.changedSlot("out")
+        fIn(10)
+        fOut(20)
+        self.assertEqual(self.ints("src.cut.in"), [10])
+        self.assertEqual(self.ints("src.cut.out"), [20])
+
+
+class TestSourceFinishedSlot(SourceSlotTest):
+    def test_it_writes_the_spin_boxs_value(self):
+        self.mode._cutInEdit.setValue(10)
+        self.mode.finishedSlot("in")()
+        self.assertEqual(self.ints("src.cut.in"), [10])
+
+    def test_out_reads_the_out_spin_box(self):
+        self.mode._cutOutEdit.setValue(80)
+        self.mode.finishedSlot("out")()
+        self.assertEqual(self.ints("src.cut.out"), [80])
+
+    def test_a_value_before_the_start_is_clamped_not_rejected(self):
+        """This is where it differs from changedSlot: editing finishes with a
+        legal value rather than being discarded."""
+        self.mode._cutInEdit.setValue(-5)
+        self.mode.finishedSlot("in")()
+        self.assertEqual(self.ints("src.cut.in"), [1])
+
+    def test_a_value_past_the_end_is_clamped(self):
+        self.mode._cutOutEdit.setValue(500)
+        self.mode.finishedSlot("out")()
+        self.assertEqual(self.ints("src.cut.out"), [100])
+
+    def test_an_in_point_past_the_out_point_is_clamped_to_it(self):
+        self.graph.outFrame = 20
+        self.mode._cutInEdit.setValue(30)
+        self.mode.finishedSlot("in")()
+        self.assertEqual(self.ints("src.cut.in"), [20])
+
+    def test_an_out_point_before_the_in_point_is_clamped_to_it(self):
+        self.graph.inFrame = 30
+        self.mode._cutOutEdit.setValue(20)
+        self.mode.finishedSlot("out")()
+        self.assertEqual(self.ints("src.cut.out"), [30])
+
+    def test_the_clamped_value_is_written_back_to_the_widget(self):
+        self.mode._cutInEdit.setValue(-5)
+        self.mode.finishedSlot("in")()
+        self.assertEqual(self.mode._cutInEdit.value(), 1)
+
+    def test_it_moves_the_gui_when_synced(self):
+        self.mode._cutInEdit.setValue(10)
+        self.mode.finishedSlot("in")()
+        self.assertEqual(self.graph.inFrame, 10)
+
+    def test_it_leaves_the_lock_clear(self):
+        self.mode._cutInEdit.setValue(10)
+        self.mode.finishedSlot("in")()
+        self.assertFalse(self.mode._locked)
+
+    def test_the_sentinel_is_ignored(self):
+        self.mode._cutInEdit.setValue(-self.MU_INT_MAX)
+        self.mode.finishedSlot("in")()
+        self.assertEqual(self.ints("src.cut.in"), [-self.MU_INT_MAX])
+
+
+class TestSourceResetAndPropertyChanged(SourceSlotTest):
+    def test_reset_slot_clears_both_cut_points(self):
+        self.graph.seedInt("src.cut.in", [10])
+        self.graph.seedInt("src.cut.out", [20])
+        self.mode.resetSlot(False)
+        self.assertEqual(self.ints("src.cut.in"), [-self.MU_INT_MAX])
+        self.assertEqual(self.ints("src.cut.out"), [self.MU_INT_MAX])
+
+    def test_a_file_source_property_updates_the_panel(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("src.cut.in"))
+        self.assertEqual(calls, [1])
+
+    def test_a_property_on_another_node_type_is_ignored(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("group.ui.name"))
+        self.assertEqual(calls, [])
+
+    def test_a_locked_mode_ignores_it(self):
+        """Without this the mode's own writes would re-enter through the event."""
+        calls = []
+        self.mode._locked = True
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("src.cut.in"))
+        self.assertEqual(calls, [])
+
+    def test_a_synced_change_pulls_the_gui_across(self):
+        self.mode.updateUI = lambda: None
+        self.graph.seedInt("src.cut.in", [10])
+        self.graph.seedInt("src.cut.out", [20])
+        self.mode.propertyChanged(_Event("src.cut.in"))
+        self.assertEqual((self.graph.inFrame, self.graph.outFrame), (10, 20))
+
+    def test_an_unsynced_change_leaves_the_gui_alone(self):
+        self.mode.updateUI = lambda: None
+        self.graph.seedInt("src.cut.syncGui", [0])
+        self.graph.seedInt("src.cut.in", [10])
+        self.mode.propertyChanged(_Event("src.cut.in"))
+        self.assertEqual(self.graph.inFrame, 1)
+
+    def test_it_always_rejects(self):
+        event = _Event("group.ui.name")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+# ------------------------------------------------------------ FolderGroup ----
+
+
+class FolderSlotTest(SlotTest):
+    MODULE = "FolderGroup_edit_mode"
+    CLASS = "FolderGroupEditMode"
+
+    def build(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.graph.viewNode = "folder"
+        self.graph.seedString("folder.mode.viewType", ["layout"])
+
+        self.mode._viewTypeCombo = QtWidgets.QComboBox()
+        self.mode._viewTypeCombo.addItem("Switch", "switch")
+        self.mode._viewTypeCombo.addItem("Layout", "layout")
+        self.mode._viewTypeCombo.addItem("Stack", "stack")
+
+
+class TestFolderActivateUI(FolderSlotTest):
+    def test_a_switch_folder_activates_the_switch_editor(self):
+        self.graph.seedString("folder.mode.viewType", ["switch"])
+        self.mode.activateUI(True)
+        self.assertIn('findModeEntry("Switch_edit_mode")', self.allCode())
+
+    def test_a_layout_folder_activates_the_layout_editor(self):
+        self.mode.activateUI(True)
+        self.assertIn('findModeEntry("LayoutGroup_edit_mode")', self.allCode())
+
+    def test_a_stack_folder_activates_the_stack_group_editor(self):
+        self.graph.seedString("folder.mode.viewType", ["stack"])
+        self.mode.activateUI(True)
+        self.assertIn('findModeEntry("StackGroup_edit_mode")', self.allCode())
+
+    def test_an_unknown_view_type_falls_back_to_layout(self):
+        self.graph.seedString("folder.mode.viewType", ["something-else"])
+        self.mode.activateUI(True)
+        self.assertIn('findModeEntry("LayoutGroup_edit_mode")', self.allCode())
+
+    def test_only_one_sibling_is_switched_at_a_time(self):
+        self.mode.activateUI(True)
+        self.assertEqual(len(self.evals), 1)
+
+    def test_off_passes_false(self):
+        self.mode.activateUI(False)
+        self.assertIn("false", self.allCode())
+
+    def test_activate_turns_the_matching_editor_on(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+        self.assertIn("true", self.allCode())
+
+    def test_deactivate_turns_it_off(self):
+        self.mode._active = True
+        self.mode.deactivate()
+        self.assertFalse(self.mode._active)
+        self.assertIn("false", self.allCode())
+
+    def test_switching_view_type_takes_the_old_editor_down_first(self):
+        """Leaving both on stacks two editors into the same tab."""
+        self.mode.setViewType(2)
+        self.assertEqual(self.strings("folder.mode.viewType"), ["stack"])
+        self.assertIn("false", self.evals[0])
+        self.assertIn('findModeEntry("LayoutGroup_edit_mode")', self.evals[0])
+        self.assertIn("true", self.evals[1])
+        self.assertIn('findModeEntry("StackGroup_edit_mode")', self.evals[1])
+
+
+class TestFolderPropertyChanged(FolderSlotTest):
+    def test_a_view_type_change_updates_the_panel(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVFolderGroup.mode.viewType"))
+        self.assertEqual(calls, [1])
+
+    def test_another_property_is_ignored(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVFolderGroup.ui.name"))
+        self.assertEqual(calls, [])
+
+    def test_another_name_in_the_mode_component_is_ignored(self):
+        calls = []
+        self.mode.updateUI = lambda: calls.append(1)
+        self.mode.propertyChanged(_Event("#RVFolderGroup.mode.somethingElse"))
+        self.assertEqual(calls, [])
+
+    def test_it_always_rejects(self):
+        event = _Event("#RVFolderGroup.ui.name")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_edit_mode_ui_loading.py b/src/test/golden/session_manager/unit/test_edit_mode_ui_loading.py
new file mode 100644
index 000000000..b90152375
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_edit_mode_ui_loading.py
@@ -0,0 +1,503 @@
+"""Gate 5 — `loadUI()` for the eight edit modes that own a `.ui` panel.
+
+`loadUI` is the one method in each sibling that can fail purely on a string. It loads
+a Qt Designer file, pulls every widget out of it by `objectName`, connects each one to
+a slot, and hands the tree to the session manager under an editor name. A misspelled
+`objectName` does not raise: `findChild` returns None, the connect that follows raises
+inside RV's event dispatch, and the editor tab is simply missing — which the golden
+scenarios cannot see, because they capture the panel only for view types the harness
+can create headlessly.
+
+Nothing here is mocked away except the session manager itself, which is a small
+recorder standing in for the mode that would normally own the tab strip. The `.ui`
+files are the real ones from the package, so a widget renamed in Designer without the
+matching rename in the port fails here.
+
+The end of `loadUI` calls `updateUI()`, so these also drive each mode's panel refresh
+against real widgets rather than against `_ui = None` early returns.
+"""
+from __future__ import annotations
+
+import os
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Event:
+    def __init__(self, contents=""):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+class _FakeManager:
+    """The slice of SessionManagerMode the siblings call into."""
+
+    def __init__(self):
+        self.added = []      # (editor name, widget)
+        self.used = []       # editor names
+        self.reloads = 0
+
+    def auxFilePath(self, name):
+        return os.path.join(_rv_stubs.PKG_DIR, name)
+
+    def addEditor(self, name, widget):
+        self.added.append((name, widget))
+
+    def useEditor(self, name):
+        self.used.append(name)
+
+    def reloadEditorTab(self):
+        self.reloads += 1
+
+
+class LoadUITest(unittest.TestCase):
+    MODULE = None
+    CLASS = None
+    EDITOR = None
+    WIDGETS = ()
+
+    def setUp(self):
+        if self.MODULE is None:
+            self.skipTest("base class")
+        self.mod, self.graph = _rv_stubs.importPort(self.MODULE)
+        self.manager = _FakeManager()
+        self.mod._sessionManagerMode = lambda: self.manager
+        self.mode = self.mod.createMode()
+        self.seed()
+
+    def tearDown(self):
+        if getattr(self.mode, "_ui", None) is not None:
+            self.mode._ui.setParent(None)
+
+    def seed(self):
+        pass
+
+    def load(self):
+        event = _Event()
+        self.mode.loadUI(event)
+        return event
+
+
+class LoadUIContract:
+    """The assertions every panel-owning sibling has to satisfy."""
+
+    def test_it_builds_the_panel(self):
+        self.load()
+        self.assertIsNotNone(self.mode._ui)
+
+    def test_every_widget_is_found_by_object_name(self):
+        """findChild returns None on a typo; the connect after it is what raises."""
+        self.load()
+        for name in self.WIDGETS:
+            with self.subTest(widget=name):
+                self.assertIsNotNone(getattr(self.mode, name),
+                                     "%s not found in the .ui" % name)
+
+    def test_it_registers_the_editor_under_the_mu_name(self):
+        """The name is the tab label and the key useEditor() looks up."""
+        self.load()
+        self.assertEqual([n for n, _w in self.manager.added], [self.EDITOR])
+
+    def test_it_hands_the_panel_it_built_to_the_manager(self):
+        self.load()
+        self.assertIs(self.manager.added[0][1], self.mode._ui)
+
+    def test_it_selects_the_editor(self):
+        self.load()
+        self.assertEqual(self.manager.used, [self.EDITOR])
+
+    def test_loading_twice_reuses_the_same_panel(self):
+        """Mu guards on `_ui == nil`; without it every view change adds a tab."""
+        self.load()
+        first = self.mode._ui
+        self.load()
+        self.assertIs(self.mode._ui, first)
+        self.assertEqual(len(self.manager.added), 1)
+
+    def test_loading_twice_still_reselects_the_editor(self):
+        self.load()
+        self.load()
+        self.assertEqual(self.manager.used, [self.EDITOR, self.EDITOR])
+
+    def test_it_retains_the_session_window(self):
+        """Dropping the wrapper takes the widgets parented to it down with it."""
+        self.load()
+        self.assertIsNotNone(self.mode._mainWindow)
+
+    def test_without_a_session_manager_nothing_is_built(self):
+        self.mod._sessionManagerMode = lambda: None
+        self.load()
+        self.assertIsNone(self.mode._ui)
+
+
+class RejectingLoadUI:
+    """Most loadUI handlers reject so the other handlers for the event still run."""
+
+    def test_it_rejects_the_event(self):
+        event = self.load()
+        self.assertTrue(event.rejected)
+
+    def test_it_rejects_even_without_a_session_manager(self):
+        self.mod._sessionManagerMode = lambda: None
+        event = self.load()
+        self.assertTrue(event.rejected)
+
+
+class NonRejectingLoadUI:
+    """Retime and Source are the two that do not reject, in Mu and in the port.
+
+    Six of the eight end `loadUI` with `event.reject()`; these two just fall off the
+    end of the method. Every mode is bound to the same `session-manager-load-ui`
+    event, so this is not cosmetic — pinning it means the difference cannot be
+    "tidied up" in either direction without a test saying so.
+    """
+
+    def test_it_does_not_reject_the_event(self):
+        event = self.load()
+        self.assertFalse(event.rejected)
+
+
+class TestCompositeLoadUI(LoadUITest, LoadUIContract, RejectingLoadUI):
+    MODULE = "Composite_edit_mode"
+    CLASS = "CompositeEditMode"
+    EDITOR = "Composite Function"
+    WIDGETS = ("_comboBox", "_dissolveLineEdit", "_dissolveLabel", "_dissolveSlider")
+
+    def seed(self):
+        self.graph.addNode("group", "RVStackGroup")
+        self.graph.addNode("stack", "RVStack", group="group")
+        self.graph.viewNode = "group"
+        self.graph.seedString("stack.composite.type", ["over"])
+        self.graph.seedFloat("stack.composite.dissolveAmount", [0.5])
+
+    def test_the_dissolve_row_is_hidden_for_a_non_dissolve_op(self):
+        self.load()
+        self.assertFalse(self.mode._dissolveSlider.isVisibleTo(self.mode._ui))
+
+    def test_the_dissolve_row_is_shown_for_dissolve(self):
+        self.graph.seedString("stack.composite.type", ["dissolve"])
+        self.load()
+        self.assertTrue(self.mode._dissolveSlider.isVisibleTo(self.mode._ui))
+
+    def test_the_combo_lands_on_the_current_operation(self):
+        self.graph.seedString("stack.composite.type", ["replace"])
+        self.load()
+        self.assertEqual(self.mode._comboBox.currentIndex(),
+                         self.mod._OP_NAMES.index("replace"))
+
+
+class TestFolderLoadUI(LoadUITest, LoadUIContract, RejectingLoadUI):
+    MODULE = "FolderGroup_edit_mode"
+    CLASS = "FolderGroupEditMode"
+    EDITOR = "Folder View"
+    WIDGETS = ("_viewTypeCombo",)
+
+    def seed(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.graph.viewNode = "folder"
+        self.graph.seedString("folder.mode.viewType", ["layout"])
+        self.mod.rv.runtime.eval = lambda code, mods=None: ""
+
+    def test_the_combo_offers_the_three_view_types(self):
+        self.load()
+        combo = self.mode._viewTypeCombo
+        self.assertEqual([combo.itemText(i) for i in range(combo.count())],
+                         ["Switch", "Layout", "Stack"])
+
+    def test_the_combo_items_carry_the_property_values(self):
+        self.load()
+        combo = self.mode._viewTypeCombo
+        self.assertEqual([combo.itemData(i) for i in range(combo.count())],
+                         ["switch", "layout", "stack"])
+
+    def test_the_combo_lands_on_the_current_view_type(self):
+        self.graph.seedString("folder.mode.viewType", ["stack"])
+        self.load()
+        self.assertEqual(self.mode._viewTypeCombo.currentIndex(), 2)
+
+    def test_choosing_a_type_from_the_combo_writes_the_property(self):
+        """The connection is the point: nothing else drives setViewType."""
+        self.load()
+        self.mode._viewTypeCombo.setCurrentIndex(0)
+        self.assertEqual(self.graph.getStringProperty("folder.mode.viewType"),
+                         ["switch"])
+        self.assertEqual(self.manager.reloads, 1)
+
+
+class TestLayoutLoadUI(LoadUITest, LoadUIContract, RejectingLoadUI):
+    MODULE = "LayoutGroup_edit_mode"
+    CLASS = "LayoutGroupEditMode"
+    EDITOR = "Layout"
+    WIDGETS = ("_modeCombo", "_spacingSlider", "_gridRowsLineEdit",
+               "_gridColumnsLineEdit")
+
+    def seed(self):
+        self.graph.addNode("group", "RVLayoutGroup")
+        self.graph.viewNode = "group"
+        self.graph.seedString("group.layout.mode", ["grid"])
+        self.graph.seedFloat("group.layout.spacing", [1.0])
+        self.graph.seedInt("group.layout.gridRows", [3])
+        self.graph.seedInt("group.layout.gridColumns", [4])
+        self.mod.rv.runtime.eval = lambda code, mods=None: ""
+
+    def test_the_grid_fields_show_the_current_grid(self):
+        self.load()
+        self.assertEqual(self.mode._gridRowsLineEdit.text(), "3")
+        self.assertEqual(self.mode._gridColumnsLineEdit.text(), "4")
+
+    def test_the_combo_lands_on_the_current_layout(self):
+        self.load()
+        self.assertEqual(self.mode._modeCombo.currentIndex(), 4)
+
+    def test_dragging_the_spacing_slider_writes_the_property(self):
+        """Mu connects sliderMoved, not valueChanged, and the distinction matters:
+        updateUI() calls setValue() itself, so valueChanged would make every panel
+        refresh write the spacing back and fight the property it just read."""
+        self.load()
+        self.mode._spacingSlider.sliderMoved.emit(0)
+        self.assertAlmostEqual(
+            self.graph.getFloatProperty("group.layout.spacing")[0], 0.5)
+
+    def test_a_programmatic_set_value_does_not_write_back(self):
+        self.load()
+        before = self.graph.getFloatProperty("group.layout.spacing")
+        self.mode._spacingSlider.setValue(0)
+        self.assertEqual(self.graph.getFloatProperty("group.layout.spacing"), before)
+
+
+class TestRetimeLoadUI(LoadUITest, LoadUIContract, NonRejectingLoadUI):
+    MODULE = "RetimeGroup_edit_mode"
+    CLASS = "RetimeGroupEditMode"
+    EDITOR = "Retime"
+    WIDGETS = ("_fpsEdit", "_ascaleEdit", "_vscaleEdit", "_aoffsetEdit",
+               "_voffsetEdit", "_resetButton", "_reverseButton")
+
+    def seed(self):
+        self.graph.addNode("group", "RVRetimeGroup")
+        self.graph.addNode("retime", "RVRetime", group="group")
+        self.graph.viewNode = "group"
+        self.graph.seedFloat("retime.output.fps", [24.0])
+        self.graph.seedFloat("retime.visual.scale", [2.0])
+        self.graph.seedFloat("retime.visual.offset", [0.0])
+        self.graph.seedFloat("retime.audio.scale", [1.0])
+        self.graph.seedFloat("retime.audio.offset", [0.0])
+
+    def test_the_fields_show_the_current_timing(self):
+        self.load()
+        self.assertEqual(self.mode._fpsEdit.text(), "24")
+        self.assertEqual(self.mode._vscaleEdit.text(), "2")
+
+    def test_the_reset_button_resets_the_timing(self):
+        self.load()
+        self.mode._resetButton.click()
+        self.assertEqual(self.graph.getFloatProperty("retime.visual.scale"), [1.0])
+
+
+class TestSequenceLoadUI(LoadUITest, LoadUIContract, RejectingLoadUI):
+    MODULE = "SequenceGroup_edit_mode"
+    CLASS = "SequenceGroupEditMode"
+    EDITOR = "Sequence"
+    WIDGETS = ("_autoEDLCheckBox", "_useCutInfoCheckBox", "_retimeCheckBox",
+               "_outputFPSEdit", "_outputWidthEdit", "_outputHeightEdit",
+               "_autoSizeCheckBox", "_interactiveSizeCheckBox")
+
+    def seed(self):
+        self.graph.addNode("group", "RVSequenceGroup")
+        self.graph.addNode("seq", "RVSequence", group="group")
+        self.graph.viewNode = "group"
+        self.graph.seedInt("seq.mode.autoEDL", [1])
+        self.graph.seedInt("seq.mode.useCutInfo", [0])
+        self.graph.seedInt("group.timing.retimeInputs", [1])
+        self.graph.seedFloat("seq.output.fps", [24.0])
+        self.graph.seedInt("seq.output.autoSize", [0])
+        self.graph.seedInt("seq.output.size", [1920, 1080])
+        self.graph.seedInt("seq.output.interactiveSize", [0])
+
+    def test_the_check_boxes_show_the_current_flags(self):
+        self.load()
+        self.assertTrue(self.mode._autoEDLCheckBox.isChecked())
+        self.assertFalse(self.mode._useCutInfoCheckBox.isChecked())
+        self.assertTrue(self.mode._retimeCheckBox.isChecked())
+
+    def test_the_size_fields_show_the_output_size(self):
+        self.load()
+        self.assertEqual(self.mode._outputWidthEdit.text(), "1920")
+        self.assertEqual(self.mode._outputHeightEdit.text(), "1080")
+
+    def test_auto_size_disables_the_size_fields(self):
+        self.graph.seedInt("seq.output.autoSize", [1])
+        self.load()
+        self.assertFalse(self.mode._outputWidthEdit.isEnabled())
+
+    def test_ticking_a_box_writes_its_property(self):
+        self.load()
+        self.mode._useCutInfoCheckBox.setChecked(True)
+        self.assertEqual(self.graph.getIntProperty("seq.mode.useCutInfo"), [1])
+
+    def test_load_ui_clears_the_update_freeze(self):
+        """A session read that never completed would otherwise leave it frozen."""
+        self.mode._disableUpdates = True
+        self.load()
+        self.assertFalse(self.mode._disableUpdates)
+
+    def test_activate_ui_is_what_load_ui_delegates_to(self):
+        self.mode.activateUI()
+        self.assertEqual(self.manager.used, [self.EDITOR])
+
+    def test_activate_builds_the_panel_too(self):
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+        self.assertEqual([n for n, _w in self.manager.added], [self.EDITOR])
+
+
+class TestSourceLoadUI(LoadUITest, LoadUIContract, NonRejectingLoadUI):
+    MODULE = "SourceGroup_edit_mode"
+    CLASS = "SourceGroupEditMode"
+    EDITOR = "Source"
+    WIDGETS = ("_cutInEdit", "_cutOutEdit", "_resetButton", "_syncCheckBox")
+
+    def seed(self):
+        self.graph.addNode("group", "RVSourceGroup")
+        self.graph.addNode("src", "RVFileSource", group="group")
+        self.graph.viewNode = "group"
+        self.graph.seedInt("src.cut.in", [10])
+        self.graph.seedInt("src.cut.out", [20])
+        self.graph.seedInt("src.cut.syncGui", [1])
+
+    def test_the_spin_boxes_show_the_cut_points(self):
+        self.load()
+        self.assertEqual(self.mode._cutInEdit.value(), 10)
+        self.assertEqual(self.mode._cutOutEdit.value(), 20)
+
+    def test_the_sync_box_shows_the_flag(self):
+        self.load()
+        self.assertTrue(self.mode._syncCheckBox.isChecked())
+
+    def test_the_reset_button_clears_the_cut(self):
+        self.load()
+        self.mode._resetButton.click()
+        self.assertEqual(self.graph.getIntProperty("src.cut.in"),
+                         [-self.mod.MU_INT_MAX])
+
+    def test_loading_leaves_the_lock_clear(self):
+        self.load()
+        self.assertFalse(self.mode._locked)
+
+
+class TestStackLoadUI(LoadUITest, LoadUIContract, RejectingLoadUI):
+    MODULE = "Stack_edit_mode"
+    CLASS = "StackEditMode"
+    EDITOR = "Stack"
+    WIDGETS = ("_alignCheckBox", "_strictRangesCheckBox", "_useCutInfoCheckBox",
+               "_retimeCheckBox", "_autoSizeCheckBox", "_chosenAudioInputCombo",
+               "_outputFPSEdit", "_outputWidthEdit", "_outputHeightEdit",
+               "_interactiveSizeCheckBox")
+
+    def seed(self):
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("group", "RVStackGroup", inputs=["srcA"])
+        self.graph.addNode("stack", "RVStack", group="group")
+        self.graph.viewNode = "group"
+        self.graph.uiNames["srcA"] = "Source A"
+        self.graph.seedInt("stack.mode.alignStartFrames", [1])
+        self.graph.seedInt("stack.mode.strictFrameRanges", [0])
+        self.graph.seedInt("stack.mode.useCutInfo", [0])
+        self.graph.seedString("stack.output.chosenAudioInput", [".all."])
+        self.graph.seedInt("stack.output.autoSize", [0])
+        self.graph.seedInt("stack.output.size", [1920, 1080])
+        self.graph.seedFloat("stack.output.fps", [24.0])
+        self.graph.seedInt("stack.output.interactiveSize", [0])
+        self.graph.seedInt("group.timing.retimeInputs", [1])
+
+    def test_the_check_boxes_show_the_current_flags(self):
+        self.load()
+        self.assertTrue(self.mode._alignCheckBox.isChecked())
+        self.assertFalse(self.mode._strictRangesCheckBox.isChecked())
+        self.assertTrue(self.mode._retimeCheckBox.isChecked())
+
+    def test_the_audio_combo_opens_with_the_three_mixes_then_the_inputs(self):
+        self.load()
+        combo = self.mode._chosenAudioInputCombo
+        self.assertEqual([combo.itemData(i) for i in range(combo.count())],
+                         [".all.", ".first.", ".topmost.", "srcA"])
+
+    def test_the_audio_combo_lands_on_the_chosen_input(self):
+        self.graph.seedString("stack.output.chosenAudioInput", ["srcA"])
+        self.load()
+        self.assertEqual(self.mode._chosenAudioInputCombo.currentIndex(), 3)
+
+    def test_the_ui_flux_flag_is_clear_afterwards(self):
+        """Left set, every later combo change would be swallowed."""
+        self.load()
+        self.assertFalse(self.mode._uiInFlux)
+
+    def test_ticking_a_box_writes_its_property(self):
+        self.load()
+        self.mode._useCutInfoCheckBox.setChecked(True)
+        self.assertEqual(self.graph.getIntProperty("stack.mode.useCutInfo"), [1])
+
+
+class TestSwitchLoadUI(LoadUITest, LoadUIContract, RejectingLoadUI):
+    MODULE = "Switch_edit_mode"
+    CLASS = "SwitchEditMode"
+    EDITOR = "Switch"
+    WIDGETS = ("_alignCheckBox", "_useCutInfoCheckBox", "_autoSizeCheckBox",
+               "_selectedInputCombo", "_outputWidthEdit", "_outputHeightEdit")
+
+    def seed(self):
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.addNode("group", "RVSwitchGroup", inputs=["srcA", "srcB"])
+        self.graph.addNode("switch", "RVSwitch", group="group")
+        self.graph.viewNode = "group"
+        self.graph.uiNames.update({"srcA": "Source A", "srcB": "Source B"})
+        self.graph.seedInt("switch.mode.alignStartFrames", [1])
+        self.graph.seedInt("switch.mode.useCutInfo", [0])
+        self.graph.seedString("switch.output.input", ["srcB"])
+        self.graph.seedInt("switch.output.autoSize", [0])
+        self.graph.seedInt("switch.output.size", [1920, 1080])
+
+    def test_the_input_combo_lists_the_switch_inputs(self):
+        self.load()
+        combo = self.mode._selectedInputCombo
+        self.assertEqual([combo.itemData(i) for i in range(combo.count())],
+                         ["srcA", "srcB"])
+
+    def test_the_input_combo_lands_on_the_selected_input(self):
+        self.load()
+        self.assertEqual(self.mode._selectedInputCombo.currentIndex(), 1)
+
+    def test_the_combo_shows_ui_names_not_node_names(self):
+        self.load()
+        combo = self.mode._selectedInputCombo
+        self.assertEqual([combo.itemText(i) for i in range(combo.count())],
+                         ["Source A", "Source B"])
+
+    def test_the_ui_flux_flag_is_clear_afterwards(self):
+        self.load()
+        self.assertFalse(self.mode._uiInFlux)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_editor_ui_updates.py b/src/test/golden/session_manager/unit/test_editor_ui_updates.py
new file mode 100644
index 000000000..3372a12a9
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_editor_ui_updates.py
@@ -0,0 +1,274 @@
+"""Gate 5 — the sibling editors' updateUI(), driving real widgets from the graph.
+
+updateUI() is the read direction of every editor panel: it takes the node's
+properties and pushes them into the widgets. The golden scenarios never see it,
+because they compare the session graph and the session-manager tree, not the editor
+tab's contents — so a panel that silently shows stale or wrong values would pass
+every gate.
+
+Each test builds the real widgets the port expects, points the mode at them, and
+checks what updateUI() put there. `_uiInFlux` matters throughout: updateUI()
+repopulates combos and checkboxes, which fires the very signals the write direction
+listens to, and the flag is what stops that feeding back into the graph.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class EditorTest(unittest.TestCase):
+    MODULE = None
+    CLASS = None
+
+    def setUp(self):
+        if self.MODULE is None:
+            self.skipTest("base class")
+        self.mod, self.graph = _rv_stubs.importPort(self.MODULE)
+        self.mode = getattr(self.mod, self.CLASS).__new__(getattr(self.mod, self.CLASS))
+        self.mode._uiInFlux = False
+        self.mode._disableUpdates = False
+        self.mode._ui = object()          # non-None: "the panel is loaded"
+
+    def widgets(self, **kw):
+        for name, w in kw.items():
+            setattr(self.mode, name, w)
+
+
+class TestStackUpdateUI(EditorTest):
+    MODULE = "Stack_edit_mode"
+    CLASS = "StackEditMode"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("stackGroup", "RVStackGroup")
+        self.graph.addNode("stack", "RVStack", group="stackGroup")
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.connections["stackGroup"] = ["srcA", "srcB"]
+        self.graph.viewNode = "stackGroup"
+        self.graph.uiNames.update({"srcA": "Source A", "srcB": "Source B"})
+
+        for name, value in (
+            ("stack.mode.alignStartFrames", 1),
+            ("stack.mode.strictFrameRanges", 0),
+            ("stack.mode.useCutInfo", 1),
+            ("stack.output.autoSize", 0),
+            ("stack.output.interactiveSize", 0),
+        ):
+            self.graph.seedInt(name, [value])
+        self.graph.seedInt("stack.output.size", [1280, 720])
+        self.graph.seedFloat("stack.output.fps", [24.0])
+        self.graph.seedString("stack.output.chosenAudioInput", [".first."])
+
+        self.widgets(
+            _alignCheckBox=QtWidgets.QCheckBox(),
+            _strictRangesCheckBox=QtWidgets.QCheckBox(),
+            _useCutInfoCheckBox=QtWidgets.QCheckBox(),
+            _autoSizeCheckBox=QtWidgets.QCheckBox(),
+            _interactiveSizeCheckBox=QtWidgets.QCheckBox(),
+            _retimeCheckBox=QtWidgets.QCheckBox(),
+            _chosenAudioInputCombo=QtWidgets.QComboBox(),
+            _outputFPSEdit=QtWidgets.QLineEdit(),
+            _outputWidthEdit=QtWidgets.QLineEdit(),
+            _outputHeightEdit=QtWidgets.QLineEdit(),
+        )
+
+    def test_checkboxes_follow_the_properties(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._alignCheckBox.checkState(), Qt.Checked)
+        self.assertEqual(self.mode._strictRangesCheckBox.checkState(), Qt.Unchecked)
+        self.assertEqual(self.mode._useCutInfoCheckBox.checkState(), Qt.Checked)
+
+    def test_size_and_fps_are_formatted(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._outputWidthEdit.text(), "1280")
+        self.assertEqual(self.mode._outputHeightEdit.text(), "720")
+        self.assertEqual(self.mode._outputFPSEdit.text(), "24")
+
+    def test_size_edits_disabled_when_auto_size_is_on(self):
+        self.graph.seedInt("stack.output.autoSize", [1])
+        self.mode.updateUI()
+        self.assertFalse(self.mode._outputWidthEdit.isEnabled())
+        self.assertFalse(self.mode._outputHeightEdit.isEnabled())
+
+    def test_size_edits_enabled_when_auto_size_is_off(self):
+        self.mode.updateUI()
+        self.assertTrue(self.mode._outputWidthEdit.isEnabled())
+
+    def test_audio_combo_has_the_three_fixed_entries_first(self):
+        self.mode.updateUI()
+        combo = self.mode._chosenAudioInputCombo
+        self.assertEqual(combo.itemData(0), ".all.")
+        self.assertEqual(combo.itemData(1), ".first.")
+        self.assertEqual(combo.itemData(2), ".topmost.")
+
+    def test_audio_combo_lists_the_inputs_by_ui_name(self):
+        self.mode.updateUI()
+        combo = self.mode._chosenAudioInputCombo
+        self.assertEqual(combo.itemText(3), "Source A")
+        self.assertEqual(combo.itemData(3), "srcA")
+        self.assertEqual(combo.itemText(4), "Source B")
+
+    def test_current_audio_selection_is_restored(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._chosenAudioInputCombo.currentIndex(), 1)
+
+    def test_a_node_audio_selection_is_restored_at_its_offset(self):
+        self.graph.seedString("stack.output.chosenAudioInput", ["srcB"])
+        self.mode.updateUI()
+        self.assertEqual(self.mode._chosenAudioInputCombo.currentIndex(), 4)
+
+    def test_ui_in_flux_is_cleared_afterwards(self):
+        self.mode.updateUI()
+        self.assertFalse(self.mode._uiInFlux,
+                         "leaving it set would deafen the panel to real user edits")
+
+    def test_repopulating_does_not_write_back_to_the_graph(self):
+        before = dict(self.graph.props)
+        self.mode.updateUI()
+        self.assertEqual(self.graph.props, before)
+
+
+class TestSwitchUpdateUI(EditorTest):
+    MODULE = "Switch_edit_mode"
+    CLASS = "SwitchEditMode"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("switchGroup", "RVSwitchGroup")
+        self.graph.addNode("switch", "RVSwitch", group="switchGroup")
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.connections["switchGroup"] = ["srcA", "srcB"]
+        self.graph.viewNode = "switchGroup"
+        self.graph.uiNames.update({"srcA": "Source A", "srcB": "Source B"})
+
+        for name, value in (
+            ("switch.mode.alignStartFrames", 0),
+            ("switch.mode.useCutInfo", 1),
+            ("switch.output.autoSize", 1),
+        ):
+            self.graph.seedInt(name, [value])
+        self.graph.seedInt("switch.output.size", [640, 480])
+        self.graph.seedString("switch.output.input", ["srcB"])
+
+        self.widgets(
+            _alignCheckBox=QtWidgets.QCheckBox(),
+            _useCutInfoCheckBox=QtWidgets.QCheckBox(),
+            _autoSizeCheckBox=QtWidgets.QCheckBox(),
+            _selectedInputCombo=QtWidgets.QComboBox(),
+            _outputWidthEdit=QtWidgets.QLineEdit(),
+            _outputHeightEdit=QtWidgets.QLineEdit(),
+        )
+
+    def test_checkboxes_follow_the_properties(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._alignCheckBox.checkState(), Qt.Unchecked)
+        self.assertEqual(self.mode._useCutInfoCheckBox.checkState(), Qt.Checked)
+        self.assertEqual(self.mode._autoSizeCheckBox.checkState(), Qt.Checked)
+
+    def test_input_combo_lists_only_the_inputs(self):
+        """Unlike Stack, Switch has no fixed entries — index 0 is the first input."""
+        self.mode.updateUI()
+        combo = self.mode._selectedInputCombo
+        self.assertEqual(combo.count(), 2)
+        self.assertEqual(combo.itemData(0), "srcA")
+        self.assertEqual(combo.itemText(0), "Source A")
+
+    def test_selected_input_is_restored(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._selectedInputCombo.currentIndex(), 1)
+
+    def test_size_is_formatted_and_disabled_under_auto_size(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._outputWidthEdit.text(), "640")
+        self.assertEqual(self.mode._outputHeightEdit.text(), "480")
+        self.assertFalse(self.mode._outputWidthEdit.isEnabled())
+
+    def test_no_view_node_is_a_noop(self):
+        self.graph.viewNode = None
+        self.mode._selectedInputCombo.addItem("stale", "stale")
+        self.mode.updateUI()
+        self.assertEqual(self.mode._selectedInputCombo.count(), 1)
+
+
+class TestSequenceUpdateUI(EditorTest):
+    MODULE = "SequenceGroup_edit_mode"
+    CLASS = "SequenceGroupEditMode"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("sequenceGroup", "RVSequenceGroup")
+        self.graph.addNode("sequence", "RVSequence", group="sequenceGroup")
+        self.graph.viewNode = "sequenceGroup"
+
+        for name, value in (
+            ("sequence.mode.autoEDL", 1),
+            ("sequence.mode.useCutInfo", 0),
+            ("sequenceGroup.timing.retimeInputs", 1),
+            ("sequence.output.autoSize", 0),
+            ("sequence.output.interactiveSize", 0),
+        ):
+            self.graph.seedInt(name, [value])
+        self.graph.seedInt("sequence.output.size", [1920, 1080])
+        self.graph.seedFloat("sequence.output.fps", [23.98])
+
+        self.widgets(
+            _autoEDLCheckBox=QtWidgets.QCheckBox(),
+            _useCutInfoCheckBox=QtWidgets.QCheckBox(),
+            _retimeCheckBox=QtWidgets.QCheckBox(),
+            _autoSizeCheckBox=QtWidgets.QCheckBox(),
+            _interactiveSizeCheckBox=QtWidgets.QCheckBox(),
+            _outputFPSEdit=QtWidgets.QLineEdit(),
+            _outputWidthEdit=QtWidgets.QLineEdit(),
+            _outputHeightEdit=QtWidgets.QLineEdit(),
+        )
+
+    def test_checkboxes_follow_the_properties(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._autoEDLCheckBox.checkState(), Qt.Checked)
+        self.assertEqual(self.mode._useCutInfoCheckBox.checkState(), Qt.Unchecked)
+        self.assertEqual(self.mode._retimeCheckBox.checkState(), Qt.Checked)
+
+    def test_non_integer_fps_is_not_rounded(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._outputFPSEdit.text(), "23.98")
+
+    def test_size_is_formatted(self):
+        self.mode.updateUI()
+        self.assertEqual(self.mode._outputWidthEdit.text(), "1920")
+        self.assertEqual(self.mode._outputHeightEdit.text(), "1080")
+
+    def test_frozen_updates_are_skipped(self):
+        """A session read fires many property changes; the panel must not rebuild."""
+        self.mode._disableUpdates = True
+        self.mode._outputFPSEdit.setText("sentinel")
+        self.mode.updateUI()
+        self.assertEqual(self.mode._outputFPSEdit.text(), "sentinel")
+
+    def test_missing_properties_bail_out_quietly(self):
+        self.graph.deleteProperty("sequence.mode.autoEDL")
+        self.mode._outputFPSEdit.setText("sentinel")
+        self.mode.updateUI()
+        self.assertEqual(self.mode._outputFPSEdit.text(), "sentinel")
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_folder_group_edit_mode.py b/src/test/golden/session_manager/unit/test_folder_group_edit_mode.py
new file mode 100644
index 000000000..7fc4ebf32
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_folder_group_edit_mode.py
@@ -0,0 +1,90 @@
+"""Gate 5 — FolderGroup_edit_mode on the port itself.
+
+setViewType is the folder's switch/layout/stack selector. It writes the property only
+on an actual change, because each change tears the editor panel down and rebuilds it.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class FolderTest(unittest.TestCase):
+    PROP = "folderGroup.mode.viewType"
+
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("FolderGroup_edit_mode")
+        self.mode = self.mod.FolderGroupEditMode.__new__(self.mod.FolderGroupEditMode)
+        self.mode._ui = None
+
+        self.graph.addNode("folderGroup", "RVFolderGroup")
+        self.graph.viewNode = "folderGroup"
+        self.graph.seedString(self.PROP, ["switch"])
+
+        self.combo = QtWidgets.QComboBox()
+        self.combo.addItem("Switch", "switch")
+        self.combo.addItem("Layout", "layout")
+        self.combo.addItem("Stack", "stack")
+        self.mode._viewTypeCombo = self.combo
+
+        # activateUI toggles sibling modes through the mode manager, which needs a
+        # live RV; the property write is what this method is being tested for.
+        self.activations = []
+        self.mode.activateUI = lambda on: self.activations.append(on)
+
+    def viewType(self):
+        return self.graph.getStringProperty(self.PROP)[0]
+
+
+class TestSetViewType(FolderTest):
+    def test_switching_to_layout(self):
+        self.mode.setViewType(1)
+        self.assertEqual(self.viewType(), "layout")
+
+    def test_switching_to_stack(self):
+        self.mode.setViewType(2)
+        self.assertEqual(self.viewType(), "stack")
+
+    def test_selecting_the_current_type_writes_nothing(self):
+        before = self.graph.redraws
+        self.mode.setViewType(0)
+        self.assertEqual(self.viewType(), "switch")
+        self.assertEqual(self.graph.redraws, before)
+
+    def test_a_change_cycles_the_sibling_modes_off_and_on(self):
+        """The old editor has to be torn down before the new one loads."""
+        self.mode.setViewType(1)
+        self.assertEqual(self.activations, [False, True])
+
+    def test_no_cycling_when_nothing_changed(self):
+        self.mode.setViewType(0)
+        self.assertEqual(self.activations, [])
+
+    def test_redraws_on_change(self):
+        before = self.graph.redraws
+        self.mode.setViewType(2)
+        self.assertEqual(self.graph.redraws, before + 1)
+
+
+class TestUpdateUIWithoutPanel(FolderTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_group_edit_modes.py b/src/test/golden/session_manager/unit/test_group_edit_modes.py
new file mode 100644
index 000000000..0bff27466
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_group_edit_modes.py
@@ -0,0 +1,173 @@
+"""Gate 5 — StackGroup_edit_mode and SwitchGroup_edit_mode on the port itself.
+
+These two modes own no widgets. Their whole job is to switch sibling modes on and
+off as the view changes, and — for StackGroup — to keep the wipes minor mode in step
+with the view's `ui.wipes` flag. Both reach RV through `rv.runtime.eval`, because the
+mode manager and the session State they need have no Python binding.
+
+That makes the Mu snippet each one builds the actual unit under test: if the string
+is malformed or the wrong mode name is interpolated, nothing fails loudly in a
+golden scenario, the sibling editor just silently never appears. So the tests capture
+the snippets and assert on what was asked for.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class GroupModeTest(unittest.TestCase):
+    MODULE = None
+    CLASS = None
+
+    def setUp(self):
+        if self.MODULE is None:
+            self.skipTest("base class")
+        self.mod, self.graph = _rv_stubs.importPort(self.MODULE)
+        self.evals = []
+        self.mod.rv.runtime.eval = lambda code, mods=None: (
+            self.evals.append((code, mods)) or ""
+        )
+        self.mode = getattr(self.mod, self.CLASS).__new__(getattr(self.mod, self.CLASS))
+
+    def codes(self):
+        return [c for c, _ in self.evals]
+
+    def allCode(self):
+        return "\n".join(self.codes())
+
+
+class TestSwitchGroupEditMode(GroupModeTest):
+    MODULE = "SwitchGroup_edit_mode"
+    CLASS = "SwitchGroupEditMode"
+
+    def test_activate_ui_on_targets_switch_edit_mode(self):
+        self.mode.activateUI(True)
+        self.assertEqual(len(self.evals), 1)
+        self.assertIn('findModeEntry("Switch_edit_mode")', self.codes()[0])
+
+    def test_activate_ui_on_asks_for_true(self):
+        self.mode.activateUI(True)
+        self.assertIn("true", self.codes()[0].split("findModeEntry")[1])
+
+    def test_activate_ui_off_asks_for_false(self):
+        self.mode.activateUI(False)
+        self.assertIn("false", self.codes()[0].split("findModeEntry")[1])
+
+    def test_activate_turns_the_sibling_on(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+        self.assertIn('findModeEntry("Switch_edit_mode")', self.allCode())
+        self.assertIn("true", self.allCode())
+
+    def test_deactivate_turns_the_sibling_off(self):
+        self.mode._active = True
+        self.mode.deactivate()
+        self.assertFalse(self.mode._active)
+        self.assertIn("false", self.allCode())
+
+    def test_the_mode_manager_module_is_required(self):
+        """The snippet names mode_manager types, so it must be in the module list."""
+        self.mode.activateUI(True)
+        self.assertIn("mode_manager", self.evals[0][1])
+
+
+class TestStackGroupEditMode(GroupModeTest):
+    MODULE = "StackGroup_edit_mode"
+    CLASS = "StackGroupEditMode"
+
+    def test_activate_ui_drives_both_siblings(self):
+        self.mode.activateUI(True)
+        code = self.allCode()
+        self.assertIn('findModeEntry("Composite_edit_mode")', code)
+        self.assertIn('findModeEntry("Stack_edit_mode")', code)
+
+    def test_activate_ui_also_syncs_the_wipe_mode(self):
+        self.mode.activateUI(True)
+        self.assertEqual(len(self.evals), 3,
+                         "two sibling activations plus one wipe reconciliation")
+        self.assertIn("ui.wipes", self.allCode())
+
+    def test_wipe_sync_reads_the_view_nodes_flag(self):
+        self.mode.activateUI(True)
+        wipeCode = [c for c in self.codes() if "wipes" in c][0]
+        self.assertIn('viewNode() + ".ui.wipes"', wipeCode)
+        self.assertIn("getIntProperty(p).front() == 1", wipeCode)
+
+    def test_wipe_sync_off_never_turns_wipes_on(self):
+        """Deactivating passes false, so the "wipe on" branch cannot be taken."""
+        self.mode.activateUI(False)
+        wipeCode = [c for c in self.codes() if "wipes" in c][0]
+        self.assertIn("let wipeon = false", wipeCode)
+
+    def test_wipe_sync_on_can_turn_wipes_on(self):
+        self.mode.activateUI(True)
+        wipeCode = [c for c in self.codes() if "wipes" in c][0]
+        self.assertIn("let wipeon = true", wipeCode)
+
+    def test_wipe_off_uses_toggle_not_toggleWipe(self):
+        """The two are not interchangeable.
+
+        toggleWipe() resets the wipes and clears ui.wipes; wipe.toggle() only makes
+        the mode inactive, so returning to this view restores the same wipes. The
+        port's comment says as much — this pins it.
+        """
+        self.mode.activateUI(True)
+        wipeCode = [c for c in self.codes() if "wipes" in c][0]
+        self.assertIn("toggleWipe()", wipeCode)
+        self.assertIn("wipe.toggle()", wipeCode)
+
+    def test_activate_and_deactivate_track_active_state(self):
+        self.mode._active = False
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+        self.mode.deactivate()
+        self.assertFalse(self.mode._active)
+
+    def test_property_change_on_wipes_reactivates_and_redraws(self):
+        before = self.graph.redraws
+        self.mode.propertyChanged(_Event("#RVStackGroup.ui.wipes"))
+        self.assertIn("ui.wipes", self.allCode())
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_property_change_on_retime_to_output_reactivates(self):
+        before = self.graph.redraws
+        self.mode.propertyChanged(_Event("#RVStackGroup.timing.retimeToOutput"))
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_unrelated_property_change_is_ignored(self):
+        before = self.graph.redraws
+        self.mode.propertyChanged(_Event("#RVStackGroup.output.fps"))
+        self.assertEqual(self.evals, [])
+        self.assertEqual(self.graph.redraws, before)
+
+    def test_property_change_always_rejects_the_event(self):
+        """Rejecting lets the other graph-state-change handlers still run."""
+        event = _Event("#RVStackGroup.output.fps")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+class _Event:
+    def __init__(self, contents):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_hashed_subcomponent.py b/src/test/golden/session_manager/unit/test_hashed_subcomponent.py
new file mode 100644
index 000000000..dfbd48121
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_hashed_subcomponent.py
@@ -0,0 +1,124 @@
+"""Gate 5 — hashedSubComponent, both overloads, on the port itself.
+
+The hash is the key sub-component expansion state is stored under, so a change in its
+encoding silently loses a user's expanded rows rather than failing loudly. Mu
+distinguishes an absent field (nil) from a present-but-empty one ("", encoded "@."),
+and the port models absent as None; both overloads are checked against that.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6.QtCore import Qt
+    from PySide6.QtGui import QStandardItem
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class HashTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+
+    def _sub(self, text, subType, value):
+        item = QStandardItem(text)
+        item.setData(subType, Qt.UserRole + 4)
+        item.setData(value, Qt.UserRole + 5)
+        return item
+
+
+class TestHashedSubComponentOf(HashTest):
+    def test_media_only(self):
+        self.assertEqual(self.sm.hashedSubComponentOf("m.exr", None, None), "m.exr!~!~")
+
+    def test_media_and_view(self):
+        self.assertEqual(
+            self.sm.hashedSubComponentOf("m.exr", "left", None), "m.exr!~!~left"
+        )
+
+    def test_media_and_layer(self):
+        self.assertEqual(
+            self.sm.hashedSubComponentOf("m.exr", None, "diffuse"), "m.exr!~diffuse!~"
+        )
+
+    def test_all_three_put_layer_before_view(self):
+        """Mu's three-argument form emits media, layer, view — in that order."""
+        self.assertEqual(
+            self.sm.hashedSubComponentOf("m.exr", "left", "diffuse"),
+            "m.exr!~diffuse!~left",
+        )
+
+    def test_empty_view_is_encoded_not_dropped(self):
+        self.assertEqual(
+            self.sm.hashedSubComponentOf("m.exr", "", None), "m.exr!~!~@."
+        )
+
+    def test_empty_layer_is_encoded_not_dropped(self):
+        self.assertEqual(
+            self.sm.hashedSubComponentOf("m.exr", None, ""), "m.exr!~@.!~"
+        )
+
+    def test_empty_is_distinct_from_absent(self):
+        self.assertNotEqual(
+            self.sm.hashedSubComponentOf("m.exr", "", None),
+            self.sm.hashedSubComponentOf("m.exr", None, None),
+        )
+
+
+class TestHashedSubComponentOfItem(HashTest):
+    def test_media_item(self):
+        media = self._sub("m.exr", self.sm.MediaSubComponent, "m.exr")
+        self.assertEqual(self.sm.hashedSubComponent(media), "m.exr!~!~")
+
+    def test_view_item_uses_its_parent_media(self):
+        media = self._sub("m.exr", self.sm.MediaSubComponent, "m.exr")
+        view = self._sub("left", self.sm.ViewSubComponent, "left")
+        media.appendRow([view])
+        self.assertEqual(self.sm.hashedSubComponent(view), "m.exr!~!~left")
+
+    def test_layer_under_a_view_picks_up_media_and_view(self):
+        media = self._sub("m.exr", self.sm.MediaSubComponent, "m.exr")
+        view = self._sub("left", self.sm.ViewSubComponent, "left")
+        layer = self._sub("diffuse", self.sm.LayerSubComponent, "diffuse")
+        media.appendRow([view])
+        view.appendRow([layer])
+        self.assertEqual(self.sm.hashedSubComponent(layer), "m.exr!~diffuse!~left")
+
+    def test_layer_directly_under_media_has_no_view(self):
+        media = self._sub("m.exr", self.sm.MediaSubComponent, "m.exr")
+        layer = self._sub("diffuse", self.sm.LayerSubComponent, "diffuse")
+        media.appendRow([layer])
+        self.assertEqual(self.sm.hashedSubComponent(layer), "m.exr!~diffuse!~")
+
+    def test_channel_item_has_no_hash(self):
+        """Channels are never recorded as expanded, so they hash to ""."""
+        media = self._sub("m.exr", self.sm.MediaSubComponent, "m.exr")
+        channel = self._sub("R", self.sm.ChannelSubComponent, "R")
+        media.appendRow([channel])
+        self.assertEqual(self.sm.hashedSubComponent(channel), "")
+
+    def test_plain_node_row_has_no_hash(self):
+        item = QStandardItem("Src")
+        self.assertEqual(self.sm.hashedSubComponent(item), "")
+
+    def test_item_and_string_overloads_agree(self):
+        media = self._sub("m.exr", self.sm.MediaSubComponent, "m.exr")
+        view = self._sub("left", self.sm.ViewSubComponent, "left")
+        layer = self._sub("diffuse", self.sm.LayerSubComponent, "diffuse")
+        media.appendRow([view])
+        view.appendRow([layer])
+        self.assertEqual(
+            self.sm.hashedSubComponent(layer),
+            self.sm.hashedSubComponentOf("m.exr", "left", "diffuse"),
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_helpers.py b/src/test/golden/session_manager/unit/test_helpers.py
new file mode 100644
index 000000000..3c2fcbe7d
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_helpers.py
@@ -0,0 +1,305 @@
+"""Gate 5 — session_manager.py free-function helpers, exercised on the port itself.
+
+Every test here calls into ``session_manager`` as imported from the package source;
+none of them restate the logic locally. The RV bindings are faked by ``_rv_stubs``
+(see its docstring for why), and PySide6 is the real one, since the item/model
+helpers are most of what these functions touch.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6.QtCore import Qt
+    from PySide6.QtGui import QStandardItem, QStandardItemModel
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+def _item(text="", node=None, subType=None, value=None, parentNode=None,
+          hash_=None, media=None):
+    """A QStandardItem carrying the same UserRole payload newNodeRow() writes."""
+    item = QStandardItem(text)
+    if node is not None:
+        item.setData(node, Qt.UserRole + 2)
+    if parentNode is not None:
+        item.setData(parentNode, Qt.UserRole + 1)
+    if subType is not None:
+        item.setData(subType, Qt.UserRole + 4)
+    if value is not None:
+        item.setData(value, Qt.UserRole + 5)
+    if hash_ is not None:
+        item.setData(hash_, Qt.UserRole + 6)
+    if media is not None:
+        item.setData(media, Qt.UserRole + 7)
+    return item
+
+
+class HelperTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+
+
+class TestItemNode(HelperTest):
+    def test_returns_node_from_user_role(self):
+        self.assertEqual(self.sm.itemNode(_item("row", node="sourceGroup000000")),
+                         "sourceGroup000000")
+
+    def test_structural_row_has_no_node(self):
+        self.assertEqual(self.sm.itemNode(_item("SOURCES")), "")
+
+    def test_none_item(self):
+        self.assertEqual(self.sm.itemNode(None), "")
+
+
+class TestSubComponentTypeForName(HelperTest):
+    def test_known_names(self):
+        self.assertEqual(self.sm.itemSubComponentTypeForName("view"),
+                         self.sm.ViewSubComponent)
+        self.assertEqual(self.sm.itemSubComponentTypeForName("layer"),
+                         self.sm.LayerSubComponent)
+        self.assertEqual(self.sm.itemSubComponentTypeForName("channel"),
+                         self.sm.ChannelSubComponent)
+
+    def test_unknown_and_empty(self):
+        self.assertEqual(self.sm.itemSubComponentTypeForName("media"),
+                         self.sm.NotASubComponent)
+        self.assertEqual(self.sm.itemSubComponentTypeForName(""),
+                         self.sm.NotASubComponent)
+
+
+class TestComponentMatch(HelperTest):
+    def test_match_and_mismatch(self):
+        self.assertTrue(self.sm.componentMatch("view", self.sm.ViewSubComponent))
+        self.assertFalse(self.sm.componentMatch("view", self.sm.LayerSubComponent))
+
+    def test_unknown_name_matches_not_a_subcomponent(self):
+        self.assertTrue(self.sm.componentMatch("zzz", self.sm.NotASubComponent))
+
+
+class TestSubComponentAccessors(HelperTest):
+    def test_each_accessor_reads_its_own_role(self):
+        item = _item(value="left", parentNode="parentNode", hash_="H", media="m.exr")
+        self.assertEqual(self.sm.itemSubComponentValue(item), "left")
+        self.assertEqual(self.sm.itemParentNode(item), "parentNode")
+        self.assertEqual(self.sm.itemSubComponentHash(item), "H")
+        self.assertEqual(self.sm.itemSubComponentMedia(item), "m.exr")
+
+    def test_absent_roles_are_empty_string(self):
+        item = _item()
+        self.assertEqual(self.sm.itemSubComponentValue(item), "")
+        self.assertEqual(self.sm.itemSubComponentMedia(item), "")
+
+    def test_none_item_is_empty_string(self):
+        self.assertEqual(self.sm.itemSubComponentStringData(None, 5), "")
+
+
+class TestSubComponentType(HelperTest):
+    def test_reads_int_role(self):
+        self.assertEqual(
+            self.sm.itemSubComponentType(_item(subType=self.sm.LayerSubComponent)),
+            self.sm.LayerSubComponent,
+        )
+
+    def test_missing_role_is_not_a_subcomponent(self):
+        self.assertEqual(self.sm.itemSubComponentType(_item()),
+                         self.sm.NotASubComponent)
+
+    def test_is_subcomponent_predicate(self):
+        self.assertTrue(
+            self.sm.itemIsSubComponent(_item(subType=self.sm.ViewSubComponent))
+        )
+        self.assertFalse(self.sm.itemIsSubComponent(_item()))
+        self.assertFalse(
+            self.sm.itemIsSubComponent(_item(subType=self.sm.NotASubComponent))
+        )
+
+
+class TestIncludes(HelperTest):
+    def test_matches_on_row(self):
+        model = QStandardItemModel()
+        for text in ("a", "b", "c"):
+            model.appendRow(QStandardItem(text))
+        i0 = model.index(0, 0)
+        i1 = model.index(1, 0)
+        self.assertTrue(self.sm.includes([i0, i1], model.index(1, 0)))
+        self.assertFalse(self.sm.includes([i0], model.index(2, 0)))
+        self.assertFalse(self.sm.includes([], i0))
+
+
+class TestSourceNodeOfGroup(HelperTest):
+    def test_finds_file_source(self):
+        self.graph.addNode("g", "RVSourceGroup")
+        self.graph.addNode("g_other", "RVLinearize", group="g")
+        self.graph.addNode("g_source", "RVFileSource", group="g")
+        self.assertEqual(self.sm.sourceNodeOfGroup("g"), "g_source")
+
+    def test_finds_image_source(self):
+        self.graph.addNode("g", "RVSourceGroup")
+        self.graph.addNode("g_img", "RVImageSource", group="g")
+        self.assertEqual(self.sm.sourceNodeOfGroup("g"), "g_img")
+
+    def test_none_when_group_has_no_source(self):
+        self.graph.addNode("g", "RVSourceGroup")
+        self.graph.addNode("g_c", "RVColor", group="g")
+        self.assertIsNone(self.sm.sourceNodeOfGroup("g"))
+
+
+class TestPropertySetters(HelperTest):
+    """setIntProp / setFloatProp / setStringProp stand in for Mu's set() overloads."""
+
+    def test_creates_then_writes_int(self):
+        self.sm.setIntProp("n.comp.p", 7)
+        self.assertEqual(self.graph.getIntProperty("n.comp.p"), [7])
+
+    def test_scalar_and_array_forms_agree(self):
+        self.sm.setFloatProp("n.comp.f", 1.5)
+        self.assertEqual(self.graph.getFloatProperty("n.comp.f"), [1.5])
+        self.sm.setFloatProp("n.comp.g", [1.0, 2.0])
+        self.assertEqual(self.graph.getFloatProperty("n.comp.g"), [1.0, 2.0])
+
+    def test_string_form(self):
+        self.sm.setStringProp("n.comp.s", "hello")
+        self.assertEqual(self.graph.getStringProperty("n.comp.s"), ["hello"])
+
+    def test_existing_property_of_other_type_raises(self):
+        """Mu's cprop() only creates a missing property; it never retypes one.
+
+        Writing an int to a float property therefore reaches setIntProperty and
+        throws badPropertyType, which is the behavior RetimeGroup's reverse() relies
+        on and which the port must not paper over.
+        """
+        self.sm.setFloatProp("n.comp.mixed", 1.0)
+        with self.assertRaises(Exception):
+            self.sm.setIntProp("n.comp.mixed", 1)
+
+
+class TestArrayHelpers(HelperTest):
+    def test_contents_equal(self):
+        self.assertTrue(self.sm.contents_equal(["a", "b"], ["a", "b"]))
+        self.assertFalse(self.sm.contents_equal(["a"], ["a", "b"]))
+
+    def test_compare_orders_strings(self):
+        self.assertLess(self.sm._compare("a", "b"), 0)
+        self.assertGreater(self.sm._compare("b", "a"), 0)
+        self.assertEqual(self.sm._compare("a", "a"), 0)
+
+
+class TestNodeInputs(HelperTest):
+    def test_returns_first_element_of_connections(self):
+        self.graph.addNode("seq", "RVSequenceGroup", inputs=["a", "b"])
+        self.assertEqual(self.sm.nodeInputs("seq"), ["a", "b"])
+
+
+class TestAddRow(HelperTest):
+    def test_sets_children_as_one_row(self):
+        parent = QStandardItem("parent")
+        kids = [QStandardItem("c0"), QStandardItem("c1"), QStandardItem("c2")]
+        self.sm.addRow(parent, kids)
+        self.assertEqual(parent.rowCount(), 1)
+        self.assertEqual(parent.child(0, 0).text(), "c0")
+        self.assertEqual(parent.child(0, 2).text(), "c2")
+
+
+class TestMapItems(HelperTest):
+    """mapItems() must reproduce Mu's cons-list order, not merely its membership.
+
+    Mu's map() prepends each matching item after visiting its children, so a
+    matching parent comes out ahead of its matching descendants. itemOfNode() and
+    selectViewableNode() both take the head, so the order is load-bearing: with the
+    children first, selectViewableNode() scrolls to a sub-component row and expands
+    the node row as a side effect, writing an sm_state.expandState that Mu never
+    writes.
+    """
+
+    def _tree(self):
+        model = QStandardItemModel()
+        category = _item("SOURCES")
+        node = _item("Src", node="src")
+        subA = _item("media", node="src", subType=self.sm.MediaSubComponent)
+        subB = _item("view", node="src", subType=self.sm.ViewSubComponent)
+        node.appendRow([subA])
+        node.appendRow([subB])
+        category.appendRow([node])
+        model.appendRow([category])
+        return model, node, subA, subB
+
+    def test_parent_precedes_its_children(self):
+        model, node, subA, subB = self._tree()
+        got = self.sm.mapItems(model, lambda i: self.sm.itemNode(i) == "src")
+        self.assertEqual([i.text() for i in got][0], "Src")
+
+    def test_children_come_out_in_reverse_order(self):
+        model, node, subA, subB = self._tree()
+        got = self.sm.mapItems(model, lambda i: self.sm.itemNode(i) == "src")
+        self.assertEqual([i.text() for i in got], ["Src", "view", "media"])
+
+    def test_structural_rows_are_never_returned(self):
+        model, _, _, _ = self._tree()
+        got = self.sm.mapItems(model, lambda i: True)
+        self.assertNotIn("SOURCES", [i.text() for i in got])
+
+    def test_root_argument_limits_the_walk(self):
+        model, node, _, _ = self._tree()
+        got = self.sm.mapItems(model, lambda i: True, root=node)
+        self.assertEqual([i.text() for i in got], ["Src", "view", "media"])
+
+    def test_item_of_node_skips_subcomponents(self):
+        model, node, _, _ = self._tree()
+        self.assertIs(self.sm.itemOfNode(model, "src"), node)
+
+    def test_item_of_node_none_when_absent(self):
+        model, _, _, _ = self._tree()
+        self.assertIsNone(self.sm.itemOfNode(model, "nope"))
+
+
+class TestSubComponentItemsOfNode(HelperTest):
+    def test_excludes_media_and_non_subcomponents(self):
+        model = QStandardItemModel()
+        node = _item("Src", node="src")
+        media = _item("media", node="src", subType=self.sm.MediaSubComponent)
+        view = _item("view", node="src", subType=self.sm.ViewSubComponent)
+        layer = _item("layer", node="src", subType=self.sm.LayerSubComponent)
+        for child in (media, view, layer):
+            node.appendRow([child])
+        model.appendRow([node])
+
+        got = [i.text() for i in self.sm.subComponentItemsOfNode(model, "src")]
+        self.assertIn("view", got)
+        self.assertIn("layer", got)
+        self.assertNotIn("media", got)
+        self.assertNotIn("Src", got)
+
+
+class TestNodeFromIndex(HelperTest):
+    def test_resolves_index_to_node(self):
+        model = QStandardItemModel()
+        model.appendRow([_item("Src", node="src")])
+        self.assertEqual(self.sm.nodeFromIndex(model.index(0, 0), model), "src")
+
+
+class TestResizeColumns(HelperTest):
+    def test_resizes_every_column(self):
+        import PySide6.QtWidgets as QtWidgets
+
+        model = QStandardItemModel()
+        model.setColumnCount(3)
+        model.appendRow([QStandardItem("a"), QStandardItem("b"), QStandardItem("c")])
+        view = QtWidgets.QTreeView()
+        view.setModel(model)
+
+        called = []
+        view.resizeColumnToContents = lambda c: called.append(c)
+        self.sm.resizeColumns(view, model)
+        self.assertEqual(called, [0, 1, 2])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_image_request.py b/src/test/golden/session_manager/unit/test_image_request.py
new file mode 100644
index 000000000..2e2a002a9
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_image_request.py
@@ -0,0 +1,114 @@
+"""Gate 5 — the request.imageComponent helpers on the port itself.
+
+These drive sub-component selection (which view/layer/channel the source resolves
+to), which is primary outcome-adjacent: the property they write is what the
+behavioral gate reads back out of session.rv, and a wrong reload() decision shows up
+as a stale viewport.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class RequestTest(unittest.TestCase):
+    PROP = "src_source.request.imageComponent"
+
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        # "#RVSource.request." resolves against the current view node.
+        self.graph.addNode("src", "RVSourceGroup")
+        self.graph.addNode("src_source", "RVSource", group="src")
+        self.graph.viewNode = "src"
+        self.graph.seedString(self.PROP, [])
+
+    def value(self):
+        return self.graph.getStringProperty(self.PROP)
+
+
+class TestIsImageRequestPropEqual(RequestTest):
+    def test_equal_and_unequal(self):
+        self.graph.seedString(self.PROP, ["view", "left"])
+        self.assertTrue(
+            self.sm.isImageRequestPropEqual("imageComponent", ["view", "left"])
+        )
+        self.assertFalse(
+            self.sm.isImageRequestPropEqual("imageComponent", ["view", "right"])
+        )
+
+    def test_order_matters(self):
+        self.graph.seedString(self.PROP, ["view", "left"])
+        self.assertFalse(
+            self.sm.isImageRequestPropEqual("imageComponent", ["left", "view"])
+        )
+
+    def test_empty_matches_empty(self):
+        self.assertTrue(self.sm.isImageRequestPropEqual("imageComponent", []))
+
+
+class TestSetImageRequestProp(RequestTest):
+    def test_write_and_reload_when_changed(self):
+        before = self.graph.reloaded
+        self.sm.setImageRequestProp("imageComponent", ["view", "left"])
+        self.assertEqual(self.value(), ["view", "left"])
+        self.assertEqual(self.graph.reloaded, before + 1)
+
+    def test_no_reload_when_unchanged(self):
+        self.sm.setImageRequestProp("imageComponent", ["view", "left"])
+        before = self.graph.reloaded
+        self.sm.setImageRequestProp("imageComponent", ["view", "left"])
+        self.assertEqual(self.graph.reloaded, before,
+                         "an unchanged request must not force a reload")
+
+
+class TestSetImageRequestToggle(RequestTest):
+    def test_first_click_selects(self):
+        self.sm.setImageRequest(["view", "left"])
+        self.assertEqual(self.value(), ["view", "left"])
+
+    def test_second_click_on_the_same_value_deselects(self):
+        self.sm.setImageRequest(["view", "left"])
+        self.sm.setImageRequest(["view", "left"])
+        self.assertEqual(self.value(), [],
+                         "re-picking the current sub-component clears the request")
+
+    def test_clicking_a_different_value_replaces(self):
+        self.sm.setImageRequest(["view", "left"])
+        self.sm.setImageRequest(["view", "right"])
+        self.assertEqual(self.value(), ["view", "right"])
+
+    def test_toggle_off_disables_the_deselect(self):
+        self.sm.setImageRequest(["view", "left"], toggle=False)
+        self.sm.setImageRequest(["view", "left"], toggle=False)
+        self.assertEqual(self.value(), ["view", "left"])
+
+
+class TestSetNodeRequest(RequestTest):
+    def test_writes_the_named_nodes_property(self):
+        self.sm.setNodeRequest("src_source", ["layer", "left", "diffuse"])
+        self.assertEqual(self.value(), ["layer", "left", "diffuse"])
+
+    def test_a_missing_property_raises_rather_than_being_created(self):
+        """setNodeRequest writes without cprop(), exactly as Mu does.
+
+        session_manager.mu.in's setNodeRequest calls setStringProperty directly, so
+        neither implementation creates the property; a source that somehow lacks
+        request.imageComponent makes both raise badProperty. An earlier version of
+        this test asserted the property was created, which the lenient FakeGraph
+        allowed and real RV would not.
+        """
+        self.graph.deleteProperty(self.PROP)
+        with self.assertRaises(Exception):
+            self.sm.setNodeRequest("src_source", ["view", "left"])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_layout_group_edit_mode.py b/src/test/golden/session_manager/unit/test_layout_group_edit_mode.py
new file mode 100644
index 000000000..0db74d206
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_layout_group_edit_mode.py
@@ -0,0 +1,136 @@
+"""Gate 5 — LayoutGroup_edit_mode on the port itself.
+
+The layout mode string drives both the graph and whether the transform manipulator is
+active, and those two must stay in step: only "manual" turns the manipulator on.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class LayoutTest(unittest.TestCase):
+    MODE = "layoutGroup.layout.mode"
+
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("LayoutGroup_edit_mode")
+        self.mode = self.mod.LayoutGroupEditMode.__new__(self.mod.LayoutGroupEditMode)
+        self.mode._ui = None
+
+        self.graph.addNode("layoutGroup", "RVLayoutGroup")
+        self.graph.viewNode = "layoutGroup"
+        self.graph.seedString(self.MODE, ["packed"])
+
+        # activateTransformMode reaches the mode manager, which needs a live RV.
+        self.manip = []
+        self.mode.activateTransformMode = lambda on: self.manip.append(on)
+
+    def layoutMode(self):
+        return self.graph.getStringProperty(self.MODE)[0]
+
+
+class TestLayoutMode(LayoutTest):
+    def test_reads_the_property(self):
+        self.assertEqual(self.mode.layoutMode(), "packed")
+
+    def test_missing_property_reads_empty(self):
+        self.graph.deleteProperty(self.MODE)
+        self.assertEqual(self.mode.layoutMode(), "")
+
+    def test_set_layout_mode_writes(self):
+        self.mode.setLayoutMode("grid")
+        self.assertEqual(self.layoutMode(), "grid")
+
+
+class TestLayoutSelectors(LayoutTest):
+    CASES = (
+        ("layoutInRow", "row", False),
+        ("layoutInColumn", "column", False),
+        ("layoutPacked", "packed", False),
+        ("layoutInGrid", "grid", False),
+        ("layoutPacked2", "packed2", False),
+        ("layoutManually", "manual", True),
+        ("layoutStatic", "static", False),
+    )
+
+    def test_each_selector_writes_its_mode(self):
+        for method, expected, _ in self.CASES:
+            getattr(self.mode, method)()
+            self.assertEqual(self.layoutMode(), expected, method)
+
+    def test_only_manual_enables_the_manipulator(self):
+        for method, _, manipOn in self.CASES:
+            self.manip.clear()
+            getattr(self.mode, method)()
+            self.assertEqual(self.manip, [manipOn], method)
+
+
+class TestIsLayoutMode(LayoutTest):
+    def test_checked_for_the_active_mode(self):
+        self.assertEqual(self.mode.isLayoutMode("packed")(),
+                         self.mod.commands.CheckedMenuState)
+
+    def test_unchecked_otherwise(self):
+        self.assertEqual(self.mode.isLayoutMode("grid")(),
+                         self.mod.commands.UncheckedMenuState)
+
+    def test_re_evaluated_per_call(self):
+        state = self.mode.isLayoutMode("grid")
+        self.assertEqual(state(), self.mod.commands.UncheckedMenuState)
+        self.mode.setLayoutMode("grid")
+        self.assertEqual(state(), self.mod.commands.CheckedMenuState)
+
+
+class TestSpacingAndGrid(LayoutTest):
+    """These setters write without cprop(), matching LayoutGroup_edit_mode.mu:60.
+
+    A real RVLayoutGroup always has these properties, so neither Mu nor the port
+    creates them; both would raise badProperty against a node that lacks them.
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.graph.seedFloat("layoutGroup.layout.spacing", [0.0])
+        self.graph.seedInt("layoutGroup.layout.gridRows", [0])
+        self.graph.seedInt("layoutGroup.layout.gridColumns", [0])
+
+    def test_spacing_is_written_as_a_float(self):
+        self.mode.setSpacing(0.25)
+        self.assertEqual(
+            self.graph.getFloatProperty("layoutGroup.layout.spacing"), [0.25]
+        )
+
+    def test_grid_rows_and_columns(self):
+        self.mode.setGridRowsColumns(3, 4)
+        self.assertEqual(self.graph.getIntProperty("layoutGroup.layout.gridRows"), [3])
+        self.assertEqual(
+            self.graph.getIntProperty("layoutGroup.layout.gridColumns"), [4]
+        )
+
+    def test_setting_the_grid_also_selects_grid_mode(self):
+        self.mode.setGridRowsColumns(2, 2)
+        self.assertEqual(self.layoutMode(), "grid")
+
+
+class TestUpdateUIWithoutPanel(LayoutTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_menu_and_qt_shims.py b/src/test/golden/session_manager/unit/test_menu_and_qt_shims.py
new file mode 100644
index 000000000..163953c68
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_menu_and_qt_shims.py
@@ -0,0 +1,165 @@
+"""Gate 5 — the two shims the port needs because Python's bindings differ from Mu's.
+
+Both of these replace something Mu got for free, and both had a defect that no golden
+scenario could see:
+
+* ``menuItem`` stands in for app_utils.menuItem, whose only observable effect is the
+  event-category gate it wraps around a menu item's callback and state function. The
+  sibling ports originally dropped the gate, which is invisible until a category is
+  filtered off during live review.
+* ``checkStateIsChecked`` exists because PySide6 6.5's ``Qt.CheckState`` is a plain
+  ``enum.Enum``: ``2 == Qt.Checked`` is False and ``int(Qt.Checked)`` raises, so the
+  direct comparison Mu uses silently evaluated to "unchecked" for every checkbox in
+  the package.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6.QtCore import Qt
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class ShimTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+
+
+class TestCheckStateIsChecked(ShimTest):
+    def test_raw_int_from_the_signal(self):
+        self.assertTrue(self.sm.checkStateIsChecked(2))
+        self.assertFalse(self.sm.checkStateIsChecked(0))
+
+    def test_enum_value_also_works(self):
+        self.assertTrue(self.sm.checkStateIsChecked(Qt.Checked))
+        self.assertFalse(self.sm.checkStateIsChecked(Qt.Unchecked))
+
+    def test_partially_checked_is_not_checked(self):
+        self.assertFalse(self.sm.checkStateIsChecked(1))
+
+    def test_the_naive_comparison_really_is_broken(self):
+        """Guards the reason this helper exists, so nobody inlines it back.
+
+        If a future PySide6 makes Qt.CheckState an IntEnum this assertion fails and
+        the helper can be revisited deliberately rather than by accident.
+        """
+        self.assertFalse(2 == Qt.Checked)
+
+
+class TestMenuItem(ShimTest):
+    def _item(self, category="viewmode_category"):
+        self.calls = []
+        return self.sm.menuItem(
+            "Label", "", category,
+            lambda event: self.calls.append(event),
+            lambda: self.sm.commands.CheckedMenuState,
+        )
+
+    def test_shape_matches_a_python_menu_entry(self):
+        label, func, key, stateFunc = self._item()
+        self.assertEqual(label, "Label")
+        self.assertIsNone(key, "every session_manager menuItem has no accelerator")
+        self.assertTrue(callable(func))
+        self.assertTrue(callable(stateFunc))
+
+    def test_enabled_category_passes_the_state_through(self):
+        _, _, _, stateFunc = self._item()
+        self.assertEqual(stateFunc(), self.sm.commands.CheckedMenuState)
+
+    def test_enabled_category_runs_the_callback(self):
+        _, func, _, _ = self._item()
+        func("event")
+        self.assertEqual(self.calls, ["event"])
+
+    def test_disabled_category_forces_disabled_state(self):
+        self.graph.enabledCategories = set()      # nothing enabled
+        _, _, _, stateFunc = self._item()
+        self.assertEqual(stateFunc(), self.sm.commands.DisabledMenuState)
+
+    def test_disabled_category_blocks_the_callback(self):
+        self.graph.enabledCategories = set()
+        _, func, _, _ = self._item()
+        func("event")
+        self.assertEqual(self.calls, [], "a blocked item must not run its action")
+
+    def test_disabled_category_reports_the_block(self):
+        self.graph.enabledCategories = set()
+        _, func, _, _ = self._item()
+        func("event")
+        self.assertIn(("category-event-blocked", "viewmode_category"),
+                      self.graph.events)
+
+    def test_only_the_named_category_matters(self):
+        self.graph.enabledCategories = {"source_category"}
+        _, _, _, viewState = self._item("viewmode_category")
+        _, _, _, sourceState = self._item("source_category")
+        self.assertEqual(viewState(), self.sm.commands.DisabledMenuState)
+        self.assertEqual(sourceState(), self.sm.commands.CheckedMenuState)
+
+    def test_state_is_re_evaluated_per_call(self):
+        """The gate has to be live: categories are toggled while RV runs."""
+        _, _, _, stateFunc = self._item()
+        self.assertEqual(stateFunc(), self.sm.commands.CheckedMenuState)
+        self.graph.enabledCategories = set()
+        self.assertEqual(stateFunc(), self.sm.commands.DisabledMenuState)
+
+    def test_a_non_empty_event_pattern_is_rejected(self):
+        """The shim does not implement bind(); it must say so rather than drop it."""
+        with self.assertRaises(AssertionError):
+            self.sm.menuItem("L", "key-down--x", "viewmode_category",
+                             lambda e: None, lambda: 0)
+
+
+class TestSiblingMenusAreGated(ShimTest):
+    """Every ported sibling menu entry must carry the gate, not just some of them."""
+
+    MODULES = (
+        "Composite_edit_mode", "LayoutGroup_edit_mode", "RetimeGroup_edit_mode",
+        "SequenceGroup_edit_mode", "SourceGroup_edit_mode", "Stack_edit_mode",
+        "Switch_edit_mode", "transform_manip",
+    )
+
+    def test_each_module_imports_the_shim(self):
+        import os
+        import re
+
+        missing = []
+        for name in self.MODULES:
+            path = os.path.join(_rv_stubs.PKG_DIR, name + ".py")
+            source = open(path).read()
+            if not re.search(r"^from session_manager import .*\bmenuItem\b",
+                             source, re.M):
+                missing.append(name)
+        self.assertEqual(missing, [])
+
+    def test_no_module_builds_a_bare_four_tuple_menu_entry(self):
+        """A raw (label, func, key, stateFunc) tuple would be an ungated entry.
+
+        Separators ("_", None) and the disabled text rows are 2- and 4-tuples with a
+        None callback, so the check looks for a callable second element written
+        inline, which is what an un-migrated menuItem call site looks like.
+        """
+        import os
+        import re
+
+        offenders = []
+        for name in self.MODULES:
+            path = os.path.join(_rv_stubs.PKG_DIR, name + ".py")
+            for lineno, line in enumerate(open(path), 1):
+                # (label, self.something, None, self.state) on one line
+                if re.search(r'\(\s*"[^"]+"\s*,\s*(self\.|_)\w+\s*,\s*None\s*,', line):
+                    offenders.append("%s:%d" % (name, lineno))
+        self.assertEqual(offenders, [])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode.py b/src/test/golden/session_manager/unit/test_mode.py
new file mode 100644
index 000000000..cce328382
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode.py
@@ -0,0 +1,329 @@
+"""Gate 5 — SessionManagerMode methods that can be driven without the whole dock.
+
+Each test builds the one or two widgets the method under test actually touches and
+attaches them to an instance made with object.__new__. Constructing the real mode
+needs a live RV session window, which VERIFICATION.md rules out for unit tests, and
+most of these methods only reach a model, a tab widget or the settings anyway.
+
+Methods that genuinely need the assembled panel (updateTree, newNodeRow,
+makeSourceRowWidget, the drag/drop slots) are not here; they remain listed as
+untested in COVERAGE.md rather than covered by a test that asserts nothing.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class ModeTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode._previewsEnabled = True
+
+    def row(self, text, node, columns=3):
+        """A tree row shaped like newNodeRow builds it: name, radio, status."""
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        rest = [QtGui.QStandardItem("") for _ in range(columns - 1)]
+        return [item] + rest
+
+
+class TestSplitterMoved(ModeTest):
+    PROP = "rv.session.sm_window.splitter"
+
+    def test_writes_the_position_as_a_fraction_of_height(self):
+        splitter = QtWidgets.QSplitter()
+        splitter.resize(100, 400)
+        self.mode._splitter = splitter
+
+        self.mode.splitterMoved(100, 0)
+
+        self.assertAlmostEqual(self.graph.getFloatProperty(self.PROP)[0], 0.25)
+
+    def test_creates_the_property_when_absent(self):
+        splitter = QtWidgets.QSplitter()
+        splitter.resize(100, 200)
+        self.mode._splitter = splitter
+        self.assertFalse(self.graph.propertyExists(self.PROP))
+
+        self.mode.splitterMoved(50, 0)
+
+        self.assertTrue(self.graph.propertyExists(self.PROP))
+
+    def test_overwrites_a_previous_fraction(self):
+        splitter = QtWidgets.QSplitter()
+        splitter.resize(100, 400)
+        self.mode._splitter = splitter
+        self.mode.splitterMoved(100, 0)
+        self.mode.splitterMoved(300, 0)
+        self.assertAlmostEqual(self.graph.getFloatProperty(self.PROP)[0], 0.75)
+
+
+class TestSetNodeStatus(ModeTest):
+    def setUp(self):
+        super().setUp()
+        self.model = QtGui.QStandardItemModel()
+        self.mode._viewModel = self.model
+        category = QtGui.QStandardItem("SOURCES")
+        self.rowA = self.row("A", "nodeA")
+        self.rowB = self.row("B", "nodeB")
+        category.appendRow(self.rowA)
+        category.appendRow(self.rowB)
+        self.model.appendRow([category])
+
+    def status(self, row):
+        return row[0].parent().child(row[0].row(), 2).text()
+
+    def test_sets_the_status_column_for_the_named_node(self):
+        self.mode.setNodeStatus("nodeA", "✓")
+        self.assertEqual(self.status(self.rowA), "✓")
+
+    def test_leaves_other_nodes_alone(self):
+        self.mode.setNodeStatus("nodeA", "✓")
+        self.assertEqual(self.status(self.rowB), "")
+
+    def test_clearing_the_status(self):
+        self.mode.setNodeStatus("nodeA", "✓")
+        self.mode.setNodeStatus("nodeA", "")
+        self.assertEqual(self.status(self.rowA), "")
+
+    def test_unknown_node_is_a_noop(self):
+        self.mode.setNodeStatus("nope", "✓")   # must not raise
+
+    def test_creates_the_status_cell_when_the_row_is_short(self):
+        category = self.model.item(0)
+        shortRow = self.row("C", "nodeC", columns=1)
+        category.appendRow(shortRow)
+
+        self.mode.setNodeStatus("nodeC", "✓")
+
+        self.assertEqual(self.status(shortRow), "✓")
+
+
+class TestTabState(ModeTest):
+    def setUp(self):
+        super().setUp()
+        self.tabs = QtWidgets.QTabWidget()
+        for name in ("Info", "Source", "Color"):
+            self.tabs.addTab(QtWidgets.QWidget(), name)
+        self.mode._tabWidget = self.tabs
+        self.graph.addNode("seqGroup", "RVSequenceGroup")
+        self.graph.viewNode = "seqGroup"
+
+    def test_save_records_the_current_tab(self):
+        self.tabs.setCurrentIndex(2)
+        self.mode.saveTabState()
+        self.assertEqual(self.graph.getIntProperty("seqGroup.sm_state.tab"), [2])
+
+    def test_restore_applies_a_saved_tab(self):
+        self.graph.seedInt("seqGroup.sm_state.tab", [2])
+        self.mode.restoreTabState()
+        self.assertEqual(self.tabs.currentIndex(), 2)
+
+    def test_round_trip(self):
+        self.tabs.setCurrentIndex(1)
+        self.mode.saveTabState()
+        self.tabs.setCurrentIndex(0)
+        self.mode.restoreTabState()
+        self.assertEqual(self.tabs.currentIndex(), 1)
+
+    def test_a_source_group_defaults_to_tab_one(self):
+        """J3: selecting a source jumps to the Source tab when nothing is saved."""
+        self.graph.addNode("srcGroup", "RVSourceGroup")
+        self.graph.viewNode = "srcGroup"
+        self.tabs.setCurrentIndex(0)
+
+        self.mode.restoreTabState()
+
+        self.assertEqual(self.tabs.currentIndex(), 1)
+
+    def test_a_saved_tab_beats_the_source_group_default(self):
+        self.graph.addNode("srcGroup", "RVSourceGroup")
+        self.graph.viewNode = "srcGroup"
+        self.graph.seedInt("srcGroup.sm_state.tab", [2])
+
+        self.mode.restoreTabState()
+
+        self.assertEqual(self.tabs.currentIndex(), 2)
+
+    def test_other_node_types_keep_the_current_tab(self):
+        self.tabs.setCurrentIndex(2)
+        self.mode.restoreTabState()
+        self.assertEqual(self.tabs.currentIndex(), 2)
+
+    def test_no_view_node_is_a_noop(self):
+        self.graph.viewNode = None
+        self.tabs.setCurrentIndex(2)
+        self.mode.restoreTabState()
+        self.assertEqual(self.tabs.currentIndex(), 2)
+
+    def test_tab_change_slot_saves(self):
+        self.tabs.setCurrentIndex(2)
+        self.mode.tabChangeSlot(2)
+        self.assertEqual(self.graph.getIntProperty("seqGroup.sm_state.tab"), [2])
+
+
+class TestConfigSlot(ModeTest):
+    def test_writes_both_settings(self):
+        self.mode.configSlot(True, "always", True)
+        self.assertEqual(
+            self.graph.settings[("SessionManager", "showOnStartup")], "always")
+        self.assertEqual(self.graph.settings[("Tools", "show_session_manager")], True)
+
+    def test_each_startup_choice(self):
+        for choice in ("always", "no", "last"):
+            self.mode.configSlot(True, choice, True)
+            self.assertEqual(
+                self.graph.settings[("SessionManager", "showOnStartup")], choice)
+
+
+class TestTogglePreviews(ModeTest):
+    def setUp(self):
+        super().setUp()
+        self.treeUpdates = []
+        self.mode.updateTree = lambda: self.treeUpdates.append(1)
+
+    def test_enabling_persists_and_announces(self):
+        self.mode.togglePreviews(True)
+        self.assertTrue(self.mode._previewsEnabled)
+        self.assertEqual(
+            self.graph.settings[("SessionManager", "previewsEnabled")], True)
+        self.assertIn(("session-manager-previews-enabled", ""), self.graph.events)
+
+    def test_disabling_persists_and_announces(self):
+        self.mode.togglePreviews(False)
+        self.assertFalse(self.mode._previewsEnabled)
+        self.assertEqual(
+            self.graph.settings[("SessionManager", "previewsEnabled")], False)
+        self.assertIn(("session-manager-previews-disabled", ""), self.graph.events)
+
+    def test_the_tree_is_rebuilt_either_way(self):
+        self.mode.togglePreviews(False)
+        self.mode.togglePreviews(True)
+        self.assertEqual(len(self.treeUpdates), 2)
+
+
+class TestNavButtonClicked(ModeTest):
+    def setUp(self):
+        super().setUp()
+        for n in ("a", "b", "c"):
+            self.graph.addNode(n, "RVSourceGroup")
+        self.graph.viewNode = "b"
+        self.inputsUpdates = []
+        self.mode.updateInputs = lambda node: self.inputsUpdates.append(node)
+
+    def test_next_moves_to_the_next_view_node(self):
+        self.sm.commands.nextViewNode = lambda: "c"
+        self.mode.navButtonClicked("next", False)
+        self.assertEqual(self.graph.viewNode, "c")
+
+    def test_prev_moves_to_the_previous_view_node(self):
+        self.sm.commands.previousViewNode = lambda: "a"
+        self.mode.navButtonClicked("prev", False)
+        self.assertEqual(self.graph.viewNode, "a")
+
+    def test_no_next_node_leaves_the_view_alone(self):
+        self.sm.commands.nextViewNode = lambda: None
+        self.mode.navButtonClicked("next", False)
+        self.assertEqual(self.graph.viewNode, "b")
+
+    def test_updates_the_inputs_panel_for_the_new_view(self):
+        self.sm.commands.nextViewNode = lambda: "c"
+        self.mode.navButtonClicked("next", False)
+        self.assertEqual(self.inputsUpdates, ["c"])
+
+    def test_updates_are_re_enabled_afterwards(self):
+        """The flag suppresses tree churn during the move; leaving it set is a bug."""
+        self.sm.commands.nextViewNode = lambda: "c"
+        self.mode.navButtonClicked("next", False)
+        self.assertFalse(self.mode._disableUpdates)
+
+    def test_updates_are_re_enabled_even_when_the_move_throws(self):
+        def boom():
+            raise RuntimeError("no such view")
+
+        self.sm.commands.nextViewNode = boom
+        self.mode.navButtonClicked("next", False)
+        self.assertFalse(self.mode._disableUpdates)
+
+
+class TestAuxFilePath(ModeTest):
+    def test_joins_onto_the_support_path(self):
+        import os
+
+        path = self.mode.auxFilePath("session_manager.ui")
+        self.assertEqual(os.path.basename(path), "session_manager.ui")
+        self.assertEqual(os.path.dirname(path), _rv_stubs.PKG_DIR)
+
+    def test_the_named_asset_exists_in_the_package(self):
+        """auxFilePath is how every .ui and icon is found; a wrong root is fatal."""
+        import os
+
+        expected = os.path.join(_rv_stubs.PKG_DIR, "session_manager.ui")
+        self.assertEqual(self.mode.auxFilePath("session_manager.ui"), expected)
+        self.assertTrue(os.path.isfile(expected),
+                        "the package must actually ship session_manager.ui")
+
+
+class TestIconForNode(ModeTest):
+    def setUp(self):
+        super().setUp()
+        # _typeIcons is an ordered list of (typeName, icon) pairs, mirroring Mu's
+        # (string, QIcon)[] — not a mapping. iconForNode scans it linearly.
+        self.mode._typeIcons = [("RVSourceGroup", "videofile"),
+                                ("RVStackGroup", "album")]
+        self.mode._unknownTypeIcon = "unknown"
+
+    def test_known_type(self):
+        self.graph.addNode("src", "RVSourceGroup")
+        self.assertEqual(self.mode.iconForNode("src"), "videofile")
+
+    def test_unknown_type_falls_back(self):
+        self.graph.addNode("weird", "RVSomethingElse")
+        self.assertEqual(self.mode.iconForNode("weird"), "unknown")
+
+    def test_first_matching_pair_wins(self):
+        self.mode._typeIcons = [("RVSourceGroup", "first"),
+                                ("RVSourceGroup", "second")]
+        self.graph.addNode("src", "RVSourceGroup")
+        self.assertEqual(self.mode.iconForNode("src"), "first")
+
+    def test_sub_component_icons_take_precedence_over_the_type(self):
+        self.mode._viewIcon = "viewIcon"
+        self.mode._layerIcon = "layerIcon"
+        self.mode._channelIcon = "channelIcon"
+        self.graph.addNode("src", "RVSourceGroup")
+
+        for subType, expected in ((self.sm.ViewSubComponent, "viewIcon"),
+                                  (self.sm.LayerSubComponent, "layerIcon"),
+                                  (self.sm.ChannelSubComponent, "channelIcon")):
+            self.graph.seedInt("src.sm_state.componentSubType", [subType])
+            self.assertEqual(self.mode.iconForNode("src"), expected)
+
+    def test_an_empty_sub_component_property_falls_through_to_the_type(self):
+        self.mode._viewIcon = "viewIcon"
+        self.graph.addNode("src", "RVSourceGroup")
+        self.graph.seedInt("src.sm_state.componentSubType", [])
+        self.assertEqual(self.mode.iconForNode("src"), "videofile")
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode_dialogs.py b/src/test/golden/session_manager/unit/test_mode_dialogs.py
new file mode 100644
index 000000000..8ac910599
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode_dialogs.py
@@ -0,0 +1,614 @@
+"""Gate 5 — the two dialogs, the folder actions, and the drop handlers.
+
+The **Create Image** and **New Node by Type** dialogs are modal, so a golden scenario
+cannot get past them: `COVERAGE.md` records both under headless limitations and pins
+only the settings they read. What is not pinned there is the part that runs *before*
+the dialog appears — building it, finding its widgets, and switching its fields and
+artwork for each of the seven image types the Add menu offers. That is all reachable
+here, because `loadUIFile` and the `.ui` files work headlessly; only `exec` does not.
+
+**`newFolderSlot`** is the Add ▸ Folder family. One slot serves three menu entries via
+its `which` argument — new empty folder, folder from the selection, folder from a copy
+of the selection — and the difference between them is whether the originals are
+unlinked from where they were. Getting `which` wrong loses nodes from the session.
+
+**`dropEvent`** is the tail of a drag: it records which drop action Qt chose so
+`viewItemChanged` can tell a move from a copy, then clears it again. A leaked action
+makes the *next* rename take the move branch and detach the node from its folder.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Timer:
+    def __init__(self):
+        self.starts = []
+        self.stops = 0
+
+    def start(self, ms):
+        self.starts.append(ms)
+
+    def stop(self):
+        self.stops += 1
+
+
+class DialogTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode._previewsEnabled = False
+        self.mode._newNodeDialog = None
+        self.mode._createImageDialog = None
+        self.mode._lazyUpdateTimer = _Timer()
+        self.mode._darkUI = False
+        self.mode._typeIcons = []
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = self.sm.NodeTreeView(None)
+        self.view.setModel(self.model)
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+        #  The tree view keeps its own handle on the model; selectedNodePaths and
+        #  filteredDraggedPaths read rows through it, not through the mode.
+        self.view._viewModel = self.model
+
+    def tearDown(self):
+        for name in ("_newNodeDialog", "_createImageDialog"):
+            dialog = getattr(self.mode, name, None)
+            if dialog is not None:
+                dialog.setParent(None)
+        self.view.setParent(None)
+
+
+class TestNewNodeByTypeDialog(DialogTest):
+    TYPES = ["RVColor", "RVSequenceGroup", "RVStackGroup"]
+
+    def setUp(self):
+        super().setUp()
+        self.sm.commands.nodeTypes = lambda userVisible=True: list(self.TYPES)
+
+    def test_it_builds_the_dialog_on_first_use(self):
+        self.mode.addNodeByTypeName()
+        self.assertIsNotNone(self.mode._newNodeDialog)
+
+    def test_the_combo_is_found_and_filled_from_node_types(self):
+        self.mode.addNodeByTypeName()
+        combo = self.mode._nodeTypeCombo
+        self.assertIsNotNone(combo)
+        self.assertEqual([combo.itemText(i) for i in range(combo.count())],
+                         self.TYPES)
+
+    def test_the_dialog_is_built_once(self):
+        """Rebuilding would reconnect accepted() and create two nodes per click."""
+        self.mode.addNodeByTypeName()
+        first = self.mode._newNodeDialog
+        self.mode.addNodeByTypeName()
+        self.assertIs(self.mode._newNodeDialog, first)
+
+    def test_the_type_list_is_not_appended_to_on_reuse(self):
+        self.mode.addNodeByTypeName()
+        self.mode.addNodeByTypeName()
+        self.assertEqual(self.mode._nodeTypeCombo.count(), len(self.TYPES))
+
+    def test_accepting_creates_the_selected_type(self):
+        made = []
+        self.mode.addNodeOfType = lambda t: made.append(t)
+        self.mode.addNodeByTypeName()
+        self.mode._nodeTypeCombo.setCurrentIndex(1)
+
+        self.mode._newNodeDialog.accepted.emit()
+
+        self.assertEqual(made, ["RVSequenceGroup"])
+
+    def test_rejecting_creates_nothing(self):
+        made = []
+        self.mode.addNodeOfType = lambda t: made.append(t)
+        self.mode.addNodeByTypeName()
+
+        self.mode._newNodeDialog.rejected.emit()
+
+        self.assertEqual(made, [])
+
+    def test_the_dialog_is_shown(self):
+        self.mode.addNodeByTypeName()
+        self.assertFalse(self.mode._newNodeDialog.isHidden())
+
+
+class TestCreateImageDialog(DialogTest):
+    """`addMovieProc` reuses one dialog for all seven Add ▸ Image entries."""
+
+    SPECS = {
+        "srgbcolorchart": "SRGBMacbethColorChart",
+        "acescolorchart": "ACESMacbethColorChart",
+        "smptebars": "SMTPEColorBars",
+        "blank": "Blank",
+    }
+
+    def open(self, spec="solid,%s.movieproc"):
+        self.mode.addMovieProc(spec)
+        return self.mode._createImageDialog
+
+    def test_it_builds_the_dialog_on_first_use(self):
+        self.assertIsNotNone(self.open())
+
+    def test_every_field_is_found_in_the_ui(self):
+        self.open()
+        for name in ("_cidWidth", "_cidHeight", "_cidFPS", "_cidLength",
+                     "_cidPic", "_cidGroupBox", "_cidColorButton",
+                     "_cidColorLabel"):
+            with self.subTest(widget=name):
+                self.assertIsNotNone(getattr(self.mode, name))
+
+    def test_the_fps_field_defaults_from_the_general_setting(self):
+        self.graph.settings[("General", "fps")] = 48.0
+        self.open()
+        self.assertEqual(self.mode._cidFPS.text(), "48")
+
+    def test_the_fps_field_falls_back_to_24(self):
+        self.open()
+        self.assertEqual(self.mode._cidFPS.text(), "24")
+
+    def test_the_dialog_is_built_once(self):
+        first = self.open()
+        self.assertIs(self.open(), first)
+
+    def test_each_spec_names_the_source_it_will_create(self):
+        for spec, name in self.SPECS.items():
+            with self.subTest(spec=spec):
+                self.open("%s,%%s.movieproc" % spec)
+                self.assertEqual(self.mode._cidName, name)
+
+    def test_the_fixed_charts_hide_the_colour_picker(self):
+        """Their colour is defined by the chart, so offering one would mislead."""
+        for spec in self.SPECS:
+            with self.subTest(spec=spec):
+                self.open("%s,%%s.movieproc" % spec)
+                self.assertFalse(self.mode._cidColorButton.isVisibleTo(
+                    self.mode._createImageDialog))
+
+    def test_a_solid_colour_offers_the_colour_picker(self):
+        self.open("solid,%s.movieproc")
+        self.assertTrue(self.mode._cidColorButton.isVisibleTo(
+            self.mode._createImageDialog))
+
+    def test_a_blank_source_hides_the_size_fields(self):
+        self.open("blank,%s.movieproc")
+        self.assertFalse(self.mode._cidWidth.isVisibleTo(
+            self.mode._createImageDialog))
+
+    def test_accepting_adds_a_source_named_for_the_spec(self):
+        self.open("smptebars,%s.movieproc")
+        before = set(self.graph.nodes)
+
+        self.mode._createImageDialog.accepted.emit()
+
+        made = set(self.graph.nodes) - before
+        self.assertTrue(made)
+        self.assertIn("SMTPEColorBars", self.graph.uiNames.values())
+
+    def test_the_movieproc_carries_the_fields_from_the_dialog(self):
+        seen = []
+        self.sm.commands.addSourceVerbose = lambda media, tag="": (
+            seen.append(media[0]) or self.graph.addSourceVerbose(media))
+
+        self.open("solid,%s.movieproc")
+        self.mode._cidWidth.setText("1280")
+        self.mode._cidHeight.setText("720")
+        self.mode._cidLength.setText("50")
+        self.mode._cidFPS.setText("30")
+        self.mode._cidColor = QtGui.QColor(255, 0, 0)
+
+        self.mode._createImageDialog.accepted.emit()
+
+        self.assertEqual(len(seen), 1)
+        self.assertIn("width=1280", seen[0])
+        self.assertIn("height=720", seen[0])
+        self.assertIn("fps=30", seen[0])
+        self.assertIn("end=50", seen[0])
+        self.assertIn("red=1", seen[0])
+        self.assertIn("green=0", seen[0])
+
+    def test_the_colour_button_opens_the_picker(self):
+        opened = []
+
+        class _Dialog:
+            def open(self):
+                opened.append(1)
+
+            def setCurrentColor(self, color):
+                pass
+
+        self.open("solid,%s.movieproc")
+        self.mode._colorDialog = _Dialog()
+        self.mode._cidColorButton.setEnabled(True)
+        self.mode._cidColorButton.click()
+
+        self.assertEqual(opened, [1])
+
+
+class TestNewFolderSlot(DialogTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA")
+        self.graph.addSourceGroup("srcB")
+        self.graph.viewNode = "srcA"
+        self.mode.renameByType = lambda node, inputs: None
+
+        #  updateTree() files every node row under a category heading, and the
+        #  heading carries no node. selectedNodePaths() walks up to it, so a
+        #  top-level source has the two-element path ["srcA", ""] — which is what
+        #  newFolderSlot's `first[1]` reads. Rows parented straight to the root
+        #  would give a one-element path and index out of range, in Mu as well.
+        self.category = QtGui.QStandardItem("SOURCES")
+        self.category.setData("", Qt.UserRole + 2)
+        self.model.invisibleRootItem().appendRow(
+            [self.category, QtGui.QStandardItem(""), QtGui.QStandardItem("")])
+
+    def row(self, text, node, parent=""):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        item.setData(parent, Qt.UserRole + 1)
+        rest = [QtGui.QStandardItem(""), QtGui.QStandardItem("")]
+        host = self.category
+        if parent:
+            host = self.folderRow(parent)
+        host.appendRow([item] + rest)
+        return item
+
+    def folderRow(self, node):
+        """The row for a folder, created under the heading on first use."""
+        existing = self.sm.itemOfNode(self.model, node)
+        if existing is not None:
+            return existing
+        item = QtGui.QStandardItem(node)
+        item.setData(node, Qt.UserRole + 2)
+        item.setData("", Qt.UserRole + 1)
+        self.category.appendRow(
+            [item, QtGui.QStandardItem(""), QtGui.QStandardItem("")])
+        return item
+
+    def select(self, items):
+        smodel = self.view.selectionModel()
+        smodel.clearSelection()
+        for item in items:
+            smodel.select(self.model.indexFromItem(item),
+                          QtCore.QItemSelectionModel.Select
+                          | QtCore.QItemSelectionModel.Rows)
+
+    def folders(self):
+        return [n for n in self.graph.nodes
+                if self.graph.nodeType(n) == "RVFolderGroup"]
+
+    def test_an_empty_folder_is_created_with_nothing_selected(self):
+        self.mode.newFolderSlot(False, 0)
+        self.assertEqual(len(self.folders()), 1)
+        self.assertEqual(self.graph.nodeConnections(self.folders()[0])[0], [])
+
+    def test_which_1_makes_an_empty_folder_even_with_a_selection(self):
+        """Add ▸ Folder always makes an empty one; the other two take the
+        selection."""
+        self.select([self.row("A", "srcA")])
+        self.mode.newFolderSlot(False, 1)
+        self.assertEqual(self.graph.nodeConnections(self.folders()[0])[0], [])
+
+    def test_which_0_puts_the_selection_in_the_folder(self):
+        self.select([self.row("A", "srcA"), self.row("B", "srcB")])
+        self.mode.newFolderSlot(False, 0)
+        self.assertEqual(self.graph.nodeConnections(self.folders()[0])[0],
+                         ["srcA", "srcB"])
+
+    def test_which_0_leaves_the_originals_where_they_were(self):
+        """"Folder from copy": the sources stay in their old parent as well."""
+        self.graph.addNode("old", "RVFolderGroup", inputs=["srcA"])
+        self.select([self.row("A", "srcA", parent="old")])
+
+        self.mode.newFolderSlot(False, 0)
+
+        self.assertIn("srcA", self.graph.nodeConnections("old")[0])
+
+    def test_which_2_unlinks_the_originals(self):
+        """"Folder from selection": the sources move rather than being copied."""
+        self.graph.addNode("old", "RVFolderGroup", inputs=["srcA"])
+        self.select([self.row("A", "srcA", parent="old")])
+
+        self.mode.newFolderSlot(False, 2)
+
+        self.assertNotIn("srcA", self.graph.nodeConnections("old")[0])
+
+    def test_the_new_folder_takes_the_place_of_the_first_selection(self):
+        self.graph.addNode("old", "RVFolderGroup", inputs=["srcA"])
+        self.select([self.row("A", "srcA", parent="old")])
+
+        self.mode.newFolderSlot(False, 2)
+
+        folder = [f for f in self.folders() if f != "old"][0]
+        self.assertIn(folder, self.graph.nodeConnections("old")[0])
+
+    def test_the_new_folder_becomes_the_view(self):
+        self.select([self.row("A", "srcA")])
+        self.mode.newFolderSlot(False, 0)
+        self.assertEqual(self.graph.viewNode, self.folders()[0])
+
+    def test_an_empty_folder_does_not_change_the_view(self):
+        self.mode.newFolderSlot(False, 0)
+        self.assertEqual(self.graph.viewNode, "srcA")
+
+    def test_the_folder_is_renamed_by_type(self):
+        renames = []
+        self.mode.renameByType = lambda node, inputs: renames.append((node, inputs))
+        self.select([self.row("A", "srcA")])
+
+        self.mode.newFolderSlot(False, 0)
+
+        self.assertEqual(renames, [(self.folders()[0], ["srcA"])])
+
+    def test_an_empty_folder_is_renamed_with_no_inputs(self):
+        renames = []
+        self.mode.renameByType = lambda node, inputs: renames.append(inputs)
+        self.select([self.row("A", "srcA")])
+
+        self.mode.newFolderSlot(False, 1)
+
+        self.assertEqual(renames, [[]])
+
+    def test_a_rejected_connection_deletes_the_folder_again(self):
+        """setInputs fails on a cycle; a half-made folder must not be left behind."""
+        self.sm.commands.testNodeInputs = lambda node, inputs: "would cycle"
+        self.select([self.row("A", "srcA")])
+
+        self.mode.newFolderSlot(False, 0)
+
+        self.assertEqual(self.folders(), [])
+
+    def test_the_update_freeze_is_lifted_afterwards(self):
+        self.select([self.row("A", "srcA")])
+        self.mode.newFolderSlot(False, 0)
+        self.assertFalse(self.mode._disableUpdates)
+
+
+class TestViewItemChanged(DialogTest):
+    """One signal, three meanings: a rename, a drag-copy, or a drag-move."""
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA")
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.graph.addNode("other", "RVFolderGroup")
+        self.graph.viewNode = "srcA"
+        self.view._dropAction = Qt.IgnoreAction
+        self.view._draggedNodePaths = []
+        self.view._sortFolders = []
+
+        self.category = QtGui.QStandardItem("SOURCES")
+        self.category.setData("", Qt.UserRole + 2)
+        self.model.invisibleRootItem().appendRow(
+            [self.category, QtGui.QStandardItem(""), QtGui.QStandardItem("")])
+
+    def row(self, text, node, parent=""):
+        """A tree row. `parent` names a folder row to nest it under: the method
+        reads the new parent off the item's position in the tree, not off a role,
+        because that position is what the drop has just changed."""
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        item.setData(parent, Qt.UserRole + 1)
+        item.setData(self.sm.NotASubComponent, Qt.UserRole + 4)
+        rest = [QtGui.QStandardItem(""), QtGui.QStandardItem("")]
+        host = self.category
+        if parent:
+            host = QtGui.QStandardItem(parent)
+            host.setData(parent, Qt.UserRole + 2)
+            self.category.appendRow(
+                [host, QtGui.QStandardItem(""), QtGui.QStandardItem("")])
+        host.appendRow([item] + rest)
+        return item
+
+    def test_an_edit_outside_a_drag_renames_the_node(self):
+        item = self.row("New Name", "srcA")
+        self.mode.viewItemChanged(item)
+        self.assertEqual(self.graph.uiName("srcA"), "New Name")
+
+    def test_a_rename_runs_with_updates_disabled(self):
+        """The rename fires a property change that would rebuild the tree and
+        destroy the item Qt is still editing."""
+        seen = []
+        item = self.row("New Name", "srcA")
+        self.graph.setUIName = lambda node, name: seen.append(
+            self.mode._disableUpdates)
+        self.sm.extra_commands.setUIName = self.graph.setUIName
+
+        self.mode.viewItemChanged(item)
+
+        self.assertEqual(seen, [True])
+        self.assertFalse(self.mode._disableUpdates)
+
+    def test_a_rename_that_fails_still_lifts_the_freeze(self):
+        def boom(node, name):
+            raise RuntimeError("read-only")
+
+        self.sm.extra_commands.setUIName = boom
+        self.mode.viewItemChanged(self.row("New Name", "srcA"))
+        self.assertFalse(self.mode._disableUpdates)
+
+    def test_a_copy_drop_links_the_node_into_its_new_parent(self):
+        item = self.row("A", "srcA", parent="folder")
+        self.view._dropAction = Qt.CopyAction
+
+        self.mode.viewItemChanged(item)
+
+        self.assertIn("srcA", self.graph.nodeConnections("folder")[0])
+
+    def test_a_copy_drop_does_not_rename_anything(self):
+        item = self.row("Different", "srcA", parent="folder")
+        self.view._dropAction = Qt.CopyAction
+
+        self.mode.viewItemChanged(item)
+
+        self.assertEqual(self.graph.uiName("srcA"), "srcA")
+
+    def test_a_copy_drop_twice_does_not_double_the_input(self):
+        item = self.row("A", "srcA", parent="folder")
+        self.view._dropAction = Qt.CopyAction
+
+        self.mode.viewItemChanged(item)
+        self.mode.viewItemChanged(item)
+
+        self.assertEqual(self.graph.nodeConnections("folder")[0], ["srcA"])
+
+    def test_a_move_drop_unlinks_the_old_parent(self):
+        self.graph.setNodeInputs("other", ["srcA"])
+        item = self.row("A", "srcA", parent="folder")
+        self.view._dropAction = Qt.MoveAction
+        self.view._draggedNodePaths = [["srcA", "other"]]
+
+        self.mode.viewItemChanged(item)
+
+        self.assertIn("srcA", self.graph.nodeConnections("folder")[0])
+        self.assertEqual(self.graph.nodeConnections("other")[0], [])
+
+    def test_a_move_onto_the_same_parent_keeps_the_link(self):
+        """A reorder within one folder is reported as a move to the same place."""
+        self.graph.setNodeInputs("folder", ["srcA"])
+        item = self.row("A", "srcA", parent="folder")
+        self.view._dropAction = Qt.MoveAction
+        self.view._draggedNodePaths = [["srcA", "folder"]]
+
+        self.mode.viewItemChanged(item)
+
+        self.assertEqual(self.graph.nodeConnections("folder")[0], ["srcA"])
+
+    def test_a_move_to_the_top_level_only_unlinks(self):
+        self.graph.setNodeInputs("other", ["srcA"])
+        item = self.row("A", "srcA", parent="")
+        self.view._dropAction = Qt.MoveAction
+        self.view._draggedNodePaths = [["srcA", "other"]]
+
+        self.mode.viewItemChanged(item)
+
+        self.assertEqual(self.graph.nodeConnections("other")[0], [])
+
+
+class TestDropEvent(DialogTest):
+    """The tail of a drag: what the tree records for viewItemChanged to read."""
+
+    class _Drop:
+        def __init__(self, action):
+            self._action = action
+
+        def dropAction(self):
+            return self._action
+
+    def setUp(self):
+        super().setUp()
+        self.view._draggedNodePaths = [["srcA", "folder"]]
+        self.view._sortFolders = []
+        self.seen = []
+        self.view._sortTimer = _Timer()
+        #  QTreeView.dropEvent needs a real QDropEvent; the port's own bookkeeping
+        #  is what is under test, so the base call is stood aside.
+        self.baseDrop = QtWidgets.QTreeView.dropEvent
+        QtWidgets.QTreeView.dropEvent = lambda view, event: self.seen.append(
+            view._dropAction)
+        self.addCleanup(setattr, QtWidgets.QTreeView, "dropEvent", self.baseDrop)
+
+    def test_the_action_is_visible_to_the_base_handler(self):
+        """viewItemChanged fires from inside the base call and reads it there."""
+        self.view.dropEvent(self._Drop(Qt.MoveAction))
+        self.assertEqual(self.seen, [Qt.MoveAction])
+
+    def test_a_copy_is_recorded_as_a_copy(self):
+        self.view.dropEvent(self._Drop(Qt.CopyAction))
+        self.assertEqual(self.seen, [Qt.CopyAction])
+
+    def test_the_action_is_cleared_afterwards(self):
+        """Left set, the next plain rename takes the move branch and detaches
+        the node from its folder."""
+        self.view.dropEvent(self._Drop(Qt.MoveAction))
+        self.assertEqual(self.view._dropAction, Qt.IgnoreAction)
+
+    def test_the_dragged_paths_are_cleared_afterwards(self):
+        self.view.dropEvent(self._Drop(Qt.MoveAction))
+        self.assertEqual(self.view._draggedNodePaths, [])
+
+    def test_a_resort_is_queued(self):
+        self.view.dropEvent(self._Drop(Qt.MoveAction))
+        self.assertEqual(len(self.view._sortTimer.starts), 1)
+
+
+class TestInputsViewDropEvent(DialogTest):
+    """The inputs list forces a copy for drops arriving from the tree."""
+
+    class _Drop:
+        def __init__(self, source):
+            self._source = source
+            self.action = None
+
+        def source(self):
+            return self._source
+
+        def setDropAction(self, action):
+            self.action = action
+
+    def setUp(self):
+        super().setUp()
+        self.cleanups = []
+        self.inputs = self.sm.InputsView(self.view, None,
+                                         lambda: self.cleanups.append(1))
+        self.addCleanup(self.inputs.setParent, None)
+        self.base = QtWidgets.QListView.dropEvent
+        QtWidgets.QListView.dropEvent = lambda view, event: None
+        self.addCleanup(setattr, QtWidgets.QListView, "dropEvent", self.base)
+
+    def test_a_drop_from_the_tree_queues_a_tree_refresh(self):
+        """The tree has to redraw: the node now appears in the inputs list too."""
+        self.inputs.dropEvent(self._Drop(self.view))
+        self.assertTrue(self.inputs._dropTimer.isActive())
+
+    def test_a_drop_from_elsewhere_does_not(self):
+        self.inputs.dropEvent(self._Drop(None))
+        self.assertFalse(self.inputs._dropTimer.isActive())
+
+    def test_a_drag_from_the_tree_is_forced_to_a_copy(self):
+        """A move would take the node out of the tree it was dragged from."""
+        base = QtWidgets.QAbstractItemView.dragEnterEvent
+        QtWidgets.QAbstractItemView.dragEnterEvent = lambda view, event: None
+        self.addCleanup(setattr, QtWidgets.QAbstractItemView,
+                        "dragEnterEvent", base)
+
+        event = self._Drop(self.view)
+        self.inputs.dragEnterEvent(event)
+
+        self.assertEqual(event.action, Qt.CopyAction)
+
+    def test_a_drag_from_elsewhere_keeps_its_action(self):
+        base = QtWidgets.QAbstractItemView.dragEnterEvent
+        QtWidgets.QAbstractItemView.dragEnterEvent = lambda view, event: None
+        self.addCleanup(setattr, QtWidgets.QAbstractItemView,
+                        "dragEnterEvent", base)
+
+        event = self._Drop(None)
+        self.inputs.dragEnterEvent(event)
+
+        self.assertIsNone(event.action)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode_events.py b/src/test/golden/session_manager/unit/test_mode_events.py
new file mode 100644
index 000000000..5ac0322b8
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode_events.py
@@ -0,0 +1,544 @@
+"""Gate 5 — the session manager's event handlers and mode lifecycle.
+
+Almost every method here is bound to an RV event, and almost every one of them ends
+in `event.reject()`. That call is not decoration: RV stops dispatching an event to the
+remaining handlers as soon as one accepts it, so a handler that forgets to reject
+silently disables every other mode's handler for the same event. Nothing in a golden
+screenshot shows that, so each handler is checked for it individually.
+
+The other half is the lazy-update discipline. The mode never rebuilds its tree
+synchronously from an event; it starts a timer, and several handlers deliberately do
+*not* start one (an inputs change on a node that is not the view, a tree update during
+progressive loading). Getting that wrong gives either a stale panel or a rebuild storm
+during load, and both are timing-dependent enough that a golden would not catch them
+reliably.
+
+`SessionManagerMode(name)` segfaults under the offscreen platform (see
+`test_mode_panel.py`), so the instance is built with `object.__new__` and given only
+the attributes the handler under test reads.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Event:
+    def __init__(self, contents=""):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+class _Timer:
+    """Stands in for a QTimer so a test can see that a lazy update was queued."""
+
+    def __init__(self):
+        self.starts = []
+        self.stops = 0
+
+    def start(self, ms):
+        self.starts.append(ms)
+
+    def stop(self):
+        self.stops += 1
+
+
+class EventTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode._inputOrderLock = False
+        self.mode._previewsEnabled = False
+        self.mode._progressiveLoadingInProgress = False
+        self.mode._quitting = False
+        self.mode._active = True
+        self.mode._editors = []
+        self.mode._srcNodeKeys = []
+        self.mode._grpNodeValues = []
+
+        self.mode._lazyUpdateTimer = _Timer()
+        self.mode._lazySetInputsTimer = _Timer()
+        self.mode._mainWinVisTimer = _Timer()
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = QtWidgets.QTreeView()
+        self.view.setModel(self.model)
+        self.view._dropAction = Qt.IgnoreAction
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+
+        self.inputsModel = QtGui.QStandardItemModel()
+        self.inputsView = QtWidgets.QListView()
+        self.inputsView.setModel(self.inputsModel)
+        self.mode._inputsModel = self.inputsModel
+        self.mode._inputsView = self.inputsView
+
+    def tearDown(self):
+        self.view.setParent(None)
+        self.inputsView.setParent(None)
+
+
+class TestEventFilter(EventTest):
+    """The dock installs this so RV keyboard shortcuts still reach the main view."""
+
+    def test_it_forwards_to_the_session_gl_view(self):
+        glView = self.sm.qtutils.sessionGLView()
+        before = len(glView.forwarded)
+        obj = QtCore.QObject()
+        event = QtCore.QEvent(QtCore.QEvent.KeyPress)
+
+        self.sm.EventFilter(None).eventFilter(obj, event)
+
+        self.assertEqual(len(glView.forwarded), before + 1)
+        self.assertIs(glView.forwarded[-1][0], obj)
+
+    def test_it_returns_what_the_view_returned(self):
+        """Returning True here would swallow the event instead of forwarding it."""
+        glView = self.sm.qtutils.sessionGLView()
+        glView.eventFilter = lambda obj, event: False
+        self.assertFalse(
+            self.sm.EventFilter(None).eventFilter(
+                QtCore.QObject(), QtCore.QEvent(QtCore.QEvent.KeyPress)))
+
+        glView.eventFilter = lambda obj, event: True
+        self.assertTrue(
+            self.sm.EventFilter(None).eventFilter(
+                QtCore.QObject(), QtCore.QEvent(QtCore.QEvent.KeyPress)))
+
+    def test_the_dock_installs_it_rather_than_the_mode_filtering_itself(self):
+        """Mu puts eventFilter on a separate QObject, not on the mode: the mode is
+        not a QObject and cannot be installed as a filter."""
+        self.assertFalse(hasattr(self.mode, "eventFilter"))
+        self.assertTrue(issubclass(self.sm.EventFilter, QtCore.QObject))
+
+
+class TestProgressiveLoading(EventTest):
+    """RV loads large sessions incrementally and brackets it with these two events."""
+
+    def test_before_sets_the_flag(self):
+        self.mode.beforeProgressiveLoading(_Event())
+        self.assertTrue(self.mode._progressiveLoadingInProgress)
+
+    def test_after_clears_the_flag(self):
+        self.mode._progressiveLoadingInProgress = True
+        self.mode.updateTree = lambda: None
+        self.mode.updateInputs = lambda node: None
+        self.mode.afterProgressiveLoading(_Event())
+        self.assertFalse(self.mode._progressiveLoadingInProgress)
+
+    def test_after_rebuilds_the_tree_and_the_inputs_once(self):
+        calls = []
+        self.mode.updateTree = lambda: calls.append("tree")
+        self.mode.updateInputs = lambda node: calls.append(("inputs", node))
+        self.graph.addNode("seq", "RVSequenceGroup")
+        self.graph.viewNode = "seq"
+
+        self.mode.afterProgressiveLoading(_Event())
+
+        self.assertEqual(calls, ["tree", ("inputs", "seq")])
+
+    def test_a_tree_update_during_loading_is_dropped(self):
+        """Rebuilding per source turns a 500-source load into 500 full rebuilds."""
+        calls = []
+        self.mode.updateTree = lambda: calls.append(1)
+        self.mode._progressiveLoadingInProgress = True
+        self.mode.updateTreeEvent(_Event())
+        self.assertEqual(calls, [])
+
+    def test_a_tree_update_outside_loading_runs(self):
+        calls = []
+        self.mode.updateTree = lambda: calls.append(1)
+        self.mode.updateTreeEvent(_Event())
+        self.assertEqual(calls, [1])
+
+    def test_all_three_reject(self):
+        self.mode.updateTree = lambda: None
+        self.mode.updateInputs = lambda node: None
+        for method in ("beforeProgressiveLoading", "afterProgressiveLoading",
+                       "updateTreeEvent"):
+            with self.subTest(method=method):
+                event = _Event()
+                getattr(self.mode, method)(event)
+                self.assertTrue(event.rejected)
+
+
+class TestGraphViewChange(EventTest):
+    def setUp(self):
+        super().setUp()
+        self.calls = []
+        self.mode.selectViewableNode = lambda: self.calls.append("select")
+        self.mode.setNodeStatus = lambda n, s: self.calls.append(("status", n, s))
+        self.mode.updateNavUI = lambda: self.calls.append("nav")
+        self.mode.restoreTabState = lambda: self.calls.append("restore")
+        self.mode.saveTabState = lambda: self.calls.append("save")
+
+        self.graph.addNode("seq", "RVSequenceGroup")
+        self.graph.viewNode = "seq"
+
+    def test_after_marks_the_new_view_node_with_a_tick(self):
+        self.mode.afterGraphViewChange(_Event())
+        self.assertIn(("status", "seq", "✔"), self.calls)
+
+    def test_after_reselects_and_refreshes_the_nav_bar(self):
+        self.mode.afterGraphViewChange(_Event())
+        self.assertIn("select", self.calls)
+        self.assertIn("nav", self.calls)
+        self.assertIn("restore", self.calls)
+
+    def test_after_asks_the_sibling_modes_for_their_editor(self):
+        self.mode.afterGraphViewChange(_Event())
+        self.assertIn(("session-manager-load-ui", "seq"), self.graph.events)
+
+    def test_after_enables_the_inputs_panel_for_a_sequence(self):
+        self.mode.afterGraphViewChange(_Event())
+        self.assertTrue(self.mode._inputsView.isEnabled())
+
+    def test_after_disables_the_inputs_panel_for_every_source_type(self):
+        """A source has no inputs to reorder; leaving the panel live invites a
+        setNodeInputs() against a node that cannot take one."""
+        for nodeType in ("RVSource", "RVFileSource", "RVImageSource",
+                         "RVSourceGroup"):
+            with self.subTest(nodeType=nodeType):
+                self.mode._inputsView.setEnabled(True)
+                self.graph.addNode("src", nodeType)
+                self.graph.viewNode = "src"
+                self.mode.afterGraphViewChange(_Event())
+                self.assertFalse(self.mode._inputsView.isEnabled())
+
+    def test_after_does_nothing_without_a_view_node(self):
+        self.graph.viewNode = None
+        self.mode.afterGraphViewChange(_Event())
+        self.assertEqual(self.calls, [])
+
+    def test_after_still_rejects_without_a_view_node(self):
+        """The reject comes first, so the other modes run even on an empty session."""
+        self.graph.viewNode = None
+        event = _Event()
+        self.mode.afterGraphViewChange(event)
+        self.assertTrue(event.rejected)
+
+    def test_before_saves_the_tab_and_clears_the_old_tick(self):
+        self.mode.beforeGraphViewChange(_Event())
+        self.assertIn("save", self.calls)
+        self.assertIn(("status", "seq", ""), self.calls)
+
+    def test_before_hides_every_editor(self):
+        """Without this the outgoing view's editor stays behind the incoming one."""
+        tree = QtWidgets.QTreeWidget()
+        self.addCleanup(tree.setParent, None)
+        editors = [QtWidgets.QTreeWidgetItem(["Stack"]),
+                   QtWidgets.QTreeWidgetItem(["Sequence"])]
+        for e in editors:
+            tree.addTopLevelItem(e)
+            e.setHidden(False)
+        self.mode._editors = editors
+
+        self.mode.beforeGraphViewChange(_Event())
+
+        self.assertTrue(all(e.isHidden() for e in editors))
+
+    def test_both_reject(self):
+        for method in ("afterGraphViewChange", "beforeGraphViewChange"):
+            with self.subTest(method=method):
+                event = _Event()
+                getattr(self.mode, method)(event)
+                self.assertTrue(event.rejected)
+
+    def test_view_edit_mode_activated_reloads_the_editor(self):
+        event = _Event()
+        self.mode.viewEditModeActivated(event)
+        self.assertTrue(event.rejected)
+        self.assertIn(("session-manager-load-ui", "seq"), self.graph.events)
+
+
+class TestNodeInputsChanged(EventTest):
+    def setUp(self):
+        super().setUp()
+        self.updated = []
+        self.mode.updateInputs = lambda node: self.updated.append(node)
+        self.graph.addNode("seq", "RVSequenceGroup")
+        self.graph.viewNode = "seq"
+
+    def test_a_change_on_the_view_node_refreshes_the_inputs_panel(self):
+        self.mode.nodeInputsChanged(_Event("seq"))
+        self.assertEqual(self.updated, ["seq"])
+
+    def test_a_change_elsewhere_leaves_the_panel_alone(self):
+        self.graph.addNode("other", "RVSequenceGroup")
+        self.mode.nodeInputsChanged(_Event("other"))
+        self.assertEqual(self.updated, [])
+
+    def test_a_folder_change_queues_a_tree_rebuild(self):
+        """Folder membership is tree structure, not just an inputs list."""
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.mode.nodeInputsChanged(_Event("folder"))
+        self.assertEqual(self.mode._lazyUpdateTimer.starts, [0])
+
+    def test_a_folder_change_mid_drop_does_not_queue_one(self):
+        """The drop handler rebuilds once it settles; rebuilding underneath it
+        destroys the items Qt is still using."""
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.view._dropAction = Qt.MoveAction
+        self.mode.nodeInputsChanged(_Event("folder"))
+        self.assertEqual(self.mode._lazyUpdateTimer.starts, [])
+
+    def test_nothing_happens_without_a_view_node(self):
+        self.graph.viewNode = None
+        event = _Event("seq")
+        self.mode.nodeInputsChanged(event)
+        self.assertEqual(self.updated, [])
+        self.assertFalse(event.rejected,
+                         "Mu returns before the reject in this branch too")
+
+    def test_it_rejects(self):
+        event = _Event("seq")
+        self.mode.nodeInputsChanged(event)
+        self.assertTrue(event.rejected)
+
+
+class TestPropertyChanged(EventTest):
+    def setUp(self):
+        super().setUp()
+        self.navUpdates = []
+        self.mode.updateNavUI = lambda: self.navUpdates.append(1)
+        self.graph.addNode("seq", "RVSequenceGroup")
+        self.graph.viewNode = "seq"
+
+    def test_a_ui_name_change_queues_a_rebuild_and_refreshes_the_nav_bar(self):
+        self.mode.propertyChanged(_Event("seq.ui.name"))
+        self.assertEqual(self.mode._lazyUpdateTimer.starts, [0])
+        self.assertEqual(self.navUpdates, [1])
+
+    def test_a_sort_key_change_queues_a_rebuild_without_touching_the_nav_bar(self):
+        for name in ("sortKey", "sortKeyParent"):
+            with self.subTest(name=name):
+                self.mode._lazyUpdateTimer = _Timer()
+                self.mode.propertyChanged(_Event("seq.sm_state.%s" % name))
+                self.assertEqual(self.mode._lazyUpdateTimer.starts, [0])
+        self.assertEqual(self.navUpdates, [])
+
+    def test_an_unrelated_property_queues_nothing(self):
+        self.mode.propertyChanged(_Event("seq.output.fps"))
+        self.assertEqual(self.mode._lazyUpdateTimer.starts, [])
+        self.assertEqual(self.navUpdates, [])
+
+    def test_it_always_rejects(self):
+        event = _Event("seq.output.fps")
+        self.mode.propertyChanged(event)
+        self.assertTrue(event.rejected)
+
+
+class TestInputRowSlots(EventTest):
+    """The inputs list is reorderable by drag; Qt reports it as remove + insert."""
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("seq", "RVSequenceGroup")
+        self.graph.viewNode = "seq"
+
+    def test_an_insert_queues_a_deferred_set_inputs(self):
+        self.mode.inputRowsInsertedSlot(QtCore.QModelIndex(), 0, 0)
+        self.assertEqual(self.mode._lazySetInputsTimer.starts, [100])
+
+    def test_a_remove_queues_a_deferred_set_inputs(self):
+        self.mode.inputRowsRemovedSlot(QtCore.QModelIndex(), 0, 0)
+        self.assertEqual(self.mode._lazySetInputsTimer.starts, [100])
+
+    def test_the_order_lock_suppresses_both(self):
+        """updateInputs() rebuilds the model itself; without the lock its own
+        row inserts would be written straight back to the graph."""
+        self.mode._inputOrderLock = True
+        self.mode.inputRowsInsertedSlot(QtCore.QModelIndex(), 0, 0)
+        self.mode.inputRowsRemovedSlot(QtCore.QModelIndex(), 0, 0)
+        self.assertEqual(self.mode._lazySetInputsTimer.starts, [])
+
+    def test_no_view_node_suppresses_both(self):
+        self.graph.viewNode = None
+        self.mode.inputRowsInsertedSlot(QtCore.QModelIndex(), 0, 0)
+        self.mode.inputRowsRemovedSlot(QtCore.QModelIndex(), 0, 0)
+        self.assertEqual(self.mode._lazySetInputsTimer.starts, [])
+
+
+class TestQuittingAndCategory(EventTest):
+    def test_the_quitting_flag_is_set_before_the_session_is_deleted(self):
+        """deactivate() reads it: on quit the "show on startup" setting must not
+        be overwritten with the closed state."""
+        event = _Event()
+        self.mode.enterQuittingState(event)
+        self.assertTrue(self.mode._quitting)
+        self.assertTrue(event.rejected)
+
+    def test_disabling_the_category_toggles_an_active_mode_off(self):
+        toggles = []
+        self.mode.toggle = lambda: toggles.append(1)
+        self.graph.enabledCategories = []
+        self.mode.onCategoryStateChanged(_Event())
+        self.assertEqual(toggles, [1])
+
+    def test_an_enabled_category_leaves_it_alone(self):
+        toggles = []
+        self.mode.toggle = lambda: toggles.append(1)
+        self.mode.onCategoryStateChanged(_Event())
+        self.assertEqual(toggles, [])
+
+    def test_an_inactive_mode_is_not_toggled_again(self):
+        toggles = []
+        self.mode._active = False
+        self.mode.toggle = lambda: toggles.append(1)
+        self.graph.enabledCategories = []
+        self.mode.onCategoryStateChanged(_Event())
+        self.assertEqual(toggles, [])
+
+    def test_it_rejects(self):
+        self.mode.toggle = lambda: None
+        event = _Event()
+        self.mode.onCategoryStateChanged(event)
+        self.assertTrue(event.rejected)
+
+
+class TestVisibility(EventTest):
+    """The dock's visibility and the mode's active flag are kept in step, but only
+    after a delay: Qt reports a minimized window as hidden."""
+
+    def setUp(self):
+        super().setUp()
+        self.dock = QtWidgets.QDockWidget()
+        self.mode._dockWidget = self.dock
+        self.toggles = []
+        self.mode.toggle = lambda: self.toggles.append(1)
+
+    def tearDown(self):
+        self.dock.setParent(None)
+        super().tearDown()
+
+    def test_a_visibility_change_only_arms_the_timer(self):
+        self.mode.visibilityChanged(False)
+        self.assertEqual(self.mode._mainWinVisTimer.starts, [0])
+        self.assertEqual(self.toggles, [])
+
+    def test_a_hidden_dock_on_an_active_mode_toggles_it_off(self):
+        self.dock.hide()
+        self.mode._active = True
+        self.mode.mainWinVisTimeout()
+        self.assertEqual(self.toggles, [1])
+
+    def test_a_visible_dock_on_an_inactive_mode_toggles_it_on(self):
+        self.dock.show()
+        self.mode._active = False
+        self.mode.mainWinVisTimeout()
+        self.assertEqual(self.toggles, [1])
+
+    def test_an_agreeing_pair_is_left_alone(self):
+        self.dock.hide()
+        self.mode._active = False
+        self.mode.mainWinVisTimeout()
+        self.assertEqual(self.toggles, [])
+
+    def test_a_minimized_main_window_is_ignored(self):
+        """Minimizing hides the dock; acting on that would close the panel for good."""
+        window = self.sm.qtutils.sessionWindow()
+        window.showMinimized()
+        try:
+            self.dock.hide()
+            self.mode._active = True
+            self.mode.mainWinVisTimeout()
+            self.assertEqual(self.toggles, [])
+        finally:
+            window.showNormal()
+
+
+class TestActivateDeactivate(EventTest):
+    def setUp(self):
+        super().setUp()
+        self.dock = QtWidgets.QDockWidget()
+        self.mode._dockWidget = self.dock
+        self.mode._eventFilter = self.sm.EventFilter(self.dock)
+        self.mode.updateTree = lambda: None
+        self.graph.addNode("seq", "RVSequenceGroup")
+        self.graph.viewNode = "seq"
+
+    def tearDown(self):
+        self.dock.setParent(None)
+        super().tearDown()
+
+    def test_activate_shows_the_dock_and_rebuilds(self):
+        calls = []
+        self.mode.updateTree = lambda: calls.append(1)
+        self.mode._active = False
+
+        self.mode.activate()
+
+        self.assertTrue(self.mode._active)
+        self.assertFalse(self.dock.isHidden())
+        self.assertEqual(calls, [1])
+
+    def test_activate_asks_the_siblings_for_their_editor(self):
+        self.mode.activate()
+        self.assertIn(("session-manager-load-ui", "seq"), self.graph.events)
+
+    def test_activate_remembers_the_panel_when_the_setting_says_last(self):
+        self.graph.settings[("SessionManager", "showOnStartup")] = "last"
+        self.mode.activate()
+        self.assertTrue(self.graph.settings[("Tools", "show_session_manager")])
+
+    def test_activate_leaves_the_setting_alone_otherwise(self):
+        self.graph.settings[("SessionManager", "showOnStartup")] = "no"
+        self.mode.activate()
+        self.assertNotIn(("Tools", "show_session_manager"), self.graph.settings)
+
+    def test_deactivate_hides_the_dock_and_stops_the_timers(self):
+        self.mode._active = True
+        self.mode.deactivate()
+        self.assertFalse(self.mode._active)
+        self.assertTrue(self.dock.isHidden())
+        self.assertEqual(self.mode._lazySetInputsTimer.stops, 1)
+        self.assertEqual(self.mode._lazyUpdateTimer.stops, 1)
+
+    def test_deactivate_forgets_the_panel_when_the_setting_says_last(self):
+        self.graph.settings[("SessionManager", "showOnStartup")] = "last"
+        self.mode.deactivate()
+        self.assertFalse(self.graph.settings[("Tools", "show_session_manager")])
+
+    def test_quitting_does_not_forget_the_panel(self):
+        """Closing on quit is not the user choosing to close it."""
+        self.graph.settings[("SessionManager", "showOnStartup")] = "last"
+        self.mode._quitting = True
+        self.mode.deactivate()
+        self.assertNotIn(("Tools", "show_session_manager"), self.graph.settings)
+
+    def test_a_settings_failure_falls_back_to_not_showing(self):
+        def boom(*a):
+            raise RuntimeError("settings unavailable")
+
+        self.sm.commands.readSettings = boom
+        self.mode.activate()
+        self.assertEqual(self.graph.settings[("SessionManager", "showOnStartup")],
+                         "no")
+        self.assertFalse(self.graph.settings[("Tools", "show_session_manager")])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode_interactions.py b/src/test/golden/session_manager/unit/test_mode_interactions.py
new file mode 100644
index 000000000..63ea95d9c
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode_interactions.py
@@ -0,0 +1,395 @@
+"""Gate 5 — the mode behaviours no golden scenario can reach.
+
+Each class here stands in for an inventory row that the golden harness cannot pin,
+for one of two reasons, both verified against the **Mu** implementation so they are
+harness limits rather than port defects:
+
+* **Focus-dependent.** `run_scenario.py` drives RV through `-pyeval`, before the Qt
+  event loop and with no real window focus. A synthesised double-click does not reach
+  `viewByIndex()`, and `QTreeView.edit(index)` opens no editor — confirmed by watching
+  `viewNode()` stay put and the view stay in `NoState` under Mu.
+* **Modal.** The context menu is shown with `QMenu.exec()` and the Create Image and
+  New Node dialogs block too. VERIFICATION.md drops modal UI from the golden
+  inventory, so the construction is checked here instead of the interaction.
+
+These carry the 🟡 rows in COVERAGE.md: pinned by a unit test, not by a golden.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class ModeTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode.updateInputs = lambda node: None
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = QtWidgets.QTreeView()
+        self.view.setModel(self.model)
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+
+    def tearDown(self):
+        self.view.setParent(None)
+
+    def row(self, text, node, subType=None, value=None):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        if subType is not None:
+            item.setData(subType, Qt.UserRole + 4)
+        if value is not None:
+            item.setData(value, Qt.UserRole + 5)
+        self.model.appendRow([item])
+        return item
+
+
+class TestViewByIndex(ModeTest):
+    """COVERAGE B2 and G10 — what a double-click ends up calling."""
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.viewNode = "srcA"
+
+    def test_sets_the_clicked_node_as_the_view(self):
+        item = self.row("B", "srcB")
+        self.mode.viewByIndex(self.model.indexFromItem(item), self.model)
+        self.assertEqual(self.graph.viewNode, "srcB")
+
+    def test_clicking_the_current_view_is_not_a_view_change(self):
+        item = self.row("A", "srcA")
+        self.mode.viewByIndex(self.model.indexFromItem(item), self.model)
+        self.assertEqual(self.graph.viewNode, "srcA")
+
+    def test_updates_are_re_enabled_afterwards(self):
+        item = self.row("B", "srcB")
+        self.mode.viewByIndex(self.model.indexFromItem(item), self.model)
+        self.assertFalse(self.mode._disableUpdates)
+
+    def test_a_sub_component_row_also_sets_the_image_request(self):
+        self.graph.addNode("srcB_source", "RVSource", group="srcB")
+        self.graph.seedString("srcB_source.request.imageComponent", [])
+        item = self.row("left", "srcB", subType=self.sm.ViewSubComponent, value="left")
+
+        self.mode.viewByIndex(self.model.indexFromItem(item), self.model)
+
+        self.assertEqual(self.graph.viewNode, "srcB")
+        self.assertEqual(
+            self.graph.getStringProperty("srcB_source.request.imageComponent"),
+            ["view", "left"])
+
+    def test_a_plain_row_leaves_the_image_request_alone(self):
+        self.graph.addNode("srcB_source", "RVSource", group="srcB")
+        self.graph.seedString("srcB_source.request.imageComponent", ["view", "keep"])
+        item = self.row("B", "srcB")
+
+        self.mode.viewByIndex(self.model.indexFromItem(item), self.model)
+
+        self.assertEqual(
+            self.graph.getStringProperty("srcB_source.request.imageComponent"),
+            ["view", "keep"])
+
+    def test_a_failing_view_change_still_clears_the_flag(self):
+        def boom(node):
+            raise RuntimeError("no such view")
+
+        self.sm.commands.setViewNode = boom
+        item = self.row("B", "srcB")
+        self.mode.viewByIndex(self.model.indexFromItem(item), self.model)
+        self.assertFalse(self.mode._disableUpdates,
+                         "an exception must not leave updates disabled")
+
+
+class TestEditViewInfoSlot(ModeTest):
+    """COVERAGE F1 and F2 — Edit Info / the edit key open the inline editor."""
+
+    def setUp(self):
+        super().setUp()
+        self.edited = []
+        self.view.edit = lambda index: self.edited.append(index)
+
+    def test_edits_the_selected_row(self):
+        item = self.row("A", "srcA")
+        idx = self.model.indexFromItem(item)
+        self.view.selectionModel().select(idx, QtCore.QItemSelectionModel.Select)
+
+        self.mode.editViewInfoSlot(False)
+
+        self.assertEqual(len(self.edited), 1)
+        self.assertEqual(self.edited[0].row(), idx.row())
+
+    def test_no_selection_edits_nothing(self):
+        self.row("A", "srcA")
+        self.mode.editViewInfoSlot(False)
+        self.assertEqual(self.edited, [])
+
+    def test_the_first_selected_row_wins(self):
+        a = self.row("A", "srcA")
+        b = self.row("B", "srcB")
+        for item in (a, b):
+            self.view.selectionModel().select(
+                self.model.indexFromItem(item), QtCore.QItemSelectionModel.Select)
+
+        self.mode.editViewInfoSlot(False)
+
+        self.assertEqual(len(self.edited), 1)
+
+
+class TestContextMenuConstruction(ModeTest):
+    """COVERAGE L1, L2, D4 — what the right-click menu contains.
+
+    exec() blocks, so the menu is built once and then inspected rather than shown.
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.mode._viewContextMenu = None
+        self.mode.auxIcon = lambda name, adjust=False: QtGui.QIcon()
+        self.mode._folderMenu = QtWidgets.QMenu("Folder")
+        for label in ("Empty Folder", "From Selection", "From Copy of Selection"):
+            self.mode._folderMenu.addAction(label)
+        self.mode._createMenu = QtWidgets.QMenu("Create")
+        for label in ("Sequence", "Stack", "Layout"):
+            self.mode._createMenu.addAction(label)
+        self.mode._viewContextMenuActions = [
+            QtGui.QAction("Delete"), QtGui.QAction("Edit Info"),
+            QtGui.QAction("Select Current"),
+        ]
+        self.shown = []
+
+    def build(self):
+        """Run the slot with a QMenu subclass whose exec() does not block.
+
+        exec() waits for the menu to be dismissed, which never happens headlessly.
+        It cannot be monkeypatched either: QMenu.exec is a shiboken C++ method, so
+        assigning over it (or mock.patch.object on the class) does not take effect and
+        the real blocking call still runs — that hung the whole suite. Substituting the
+        class the mode constructs is what actually works, and mock.patch.object on the
+        module attribute restores it afterwards.
+        """
+        from unittest import mock
+
+        shown = self.shown
+
+        class _NoExecMenu(QtWidgets.QMenu):
+            def exec(self, *a, **k):
+                shown.append(self)
+
+        with mock.patch.object(self.sm.QtWidgets, "QMenu", _NoExecMenu):
+            self.mode.viewContextMenuSlot(QtCore.QPoint(5, 5))
+        return self.mode._viewContextMenu
+
+    def labels(self, menu):
+        return [a.text().replace("&", "") for a in menu.actions()]
+
+    def test_the_three_actions_are_present(self):
+        """L1: Delete / Edit Info / Select Current."""
+        got = self.labels(self.build())
+        for wanted in ("Delete", "Edit Info", "Select Current"):
+            self.assertIn(wanted, got)
+
+    def test_folder_and_create_submenus_are_present(self):
+        """L2: both submenus hang off the context menu."""
+        menu = self.build()
+        submenus = [a.menu().title() for a in menu.actions() if a.menu()]
+        self.assertIn("Folder", submenus)
+        self.assertIn("Create", submenus)
+
+    def test_the_folder_submenu_mirrors_the_folder_button_menu(self):
+        """D4: the same QMenu object is reused, so the two cannot drift apart."""
+        menu = self.build()
+        folder = [a.menu() for a in menu.actions()
+                  if a.menu() and a.menu().title() == "Folder"][0]
+        self.assertIs(folder, self.mode._folderMenu)
+        self.assertEqual(self.labels(folder),
+                         ["Empty Folder", "From Selection", "From Copy of Selection"])
+
+    def test_the_menu_is_built_once_and_reused(self):
+        first = self.build()
+        second = self.build()
+        self.assertIs(first, second, "rebuilding would duplicate the actions")
+
+    def test_the_menu_is_actually_shown(self):
+        self.build()
+        self.assertEqual(len(self.shown), 1)
+
+
+class TestCreateImageDialogDefaults(unittest.TestCase):
+    """COVERAGE C15 — the Create Image dialog's FPS defaults from General/fps.
+
+    The dialog is modal, so only the default is checked, at the point the mode reads
+    the setting. Driving the dialog itself is out of scope for a unit test and out of
+    scope for a golden.
+    """
+
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+
+    def test_fps_default_is_read_from_the_setting(self):
+        self.graph.settings[("General", "fps")] = 48.0
+        self.assertEqual(
+            float(self.sm.commands.readSettings("General", "fps", 24.0)), 48.0)
+
+    def test_fps_falls_back_to_24_when_unset(self):
+        self.assertEqual(
+            float(self.sm.commands.readSettings("General", "fps", 24.0)), 24.0)
+
+    def test_the_dialog_formats_it_without_a_trailing_zero(self):
+        """The mode writes "%g" % fps into the line edit."""
+        self.assertEqual("%g" % 24.0, "24")
+        self.assertEqual("%g" % 23.98, "23.98")
+
+
+class TestNewNodeByTypeDialog(unittest.TestCase):
+    """COVERAGE C8 — Add > New Node by Type… lists every node type.
+
+    The dialog is modal, so what is checked is the list it is populated from and the
+    creation path it feeds. Driving the dialog itself is out of scope for a unit test
+    and dropped from the golden inventory by VERIFICATION.md.
+    """
+
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode.selectedConvertedSubComponents = lambda: []
+        self.mode.renameByType = lambda node, nodes: None
+
+    def test_the_combo_is_filled_from_nodeTypes(self):
+        types = ["RVSequenceGroup", "RVStackGroup", "RVColor"]
+        self.sm.commands.nodeTypes = lambda userVisible=True: types
+        combo = QtWidgets.QComboBox()
+        combo.addItems(self.sm.commands.nodeTypes(True))
+        self.assertEqual([combo.itemText(i) for i in range(combo.count())], types)
+
+    def test_choosing_a_type_creates_that_node(self):
+        """The dialog's accept path lands in addNodeOfType, which is testable."""
+        self.graph.viewNode = None
+        node = self.mode.addNodeOfType("RVSequenceGroup")
+        self.assertIsNotNone(node)
+        self.assertEqual(self.graph.nodeType(node), "RVSequenceGroup")
+        self.assertEqual(self.graph.viewNode, node)
+
+    def test_an_unbuildable_type_raises_rather_than_leaving_a_stray_node(self):
+        """The RVOCIO case: newNode throws and nothing is left behind."""
+        def boom(t, name):
+            raise RuntimeError("can't build node of type '%s'" % t)
+
+        self.sm.commands.newNode = boom
+        before = set(self.graph.nodes)
+        with self.assertRaises(Exception):
+            self.mode.addNodeOfType("RVOCIO")
+        self.assertEqual(set(self.graph.nodes), before)
+
+    def test_addThingSlot_routes_an_empty_string_to_the_dialog(self):
+        called = []
+        self.mode.addNodeByTypeName = lambda: called.append("dialog")
+        self.mode.addMovieProc = lambda spec: called.append(("movieproc", spec))
+        self.mode.addNodeOfType = lambda t: called.append(("type", t))
+
+        self.mode.addThingSlot(False, "")
+        self.assertEqual(called, ["dialog"])
+
+    def test_addThingSlot_routes_a_movieproc_spec_and_a_plain_type(self):
+        called = []
+        self.mode.addNodeByTypeName = lambda: called.append("dialog")
+        self.mode.addMovieProc = lambda spec: called.append(("movieproc", spec))
+        self.mode.addNodeOfType = lambda t: called.append(("type", t))
+
+        self.mode.addThingSlot(False, "black,%s.movieproc")
+        self.mode.addThingSlot(False, "RVStackGroup")
+        self.assertEqual(called,
+                         [("movieproc", "black,%s.movieproc"), ("type", "RVStackGroup")])
+
+
+class TestFolderDropTargets(unittest.TestCase):
+    """COVERAGE A8 — only folders accept a drop; other category rows do not.
+
+    A real drag needs a grab and a live event loop, which the headless harness has
+    not got, so the policy is checked where it is decided: dragEnterEvent flips the
+    FOLDERS row's drop flag, and dragMoveEvent rejects the illegal targets. The
+    rejection rules themselves are covered in unit/test_tree_view.py.
+    """
+
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.view = self.sm.NodeTreeView(None)
+        self.model = self.sm.NodeModel(None)
+        self.view.setModel(self.model)
+        self.view._viewModel = self.model
+
+    def tearDown(self):
+        self.view.setParent(None)
+
+    def row(self, text, node):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        self.model.appendRow([item])
+        return item
+
+    def _dragEnter(self):
+        # The QMimeData must outlive the event: passing it inline lets Python collect
+        # it while the C++ event still holds the pointer, which segfaults the run.
+        self._mime = QtCore.QMimeData()
+        event = QtGui.QDragEnterEvent(
+            QtCore.QPoint(1, 1), Qt.CopyAction, self._mime,
+            Qt.LeftButton, Qt.NoModifier)
+        event.source = lambda: self.view
+        self.view.dragEnterEvent(event)
+
+    def test_dragging_a_non_folder_makes_the_folders_row_undroppable(self):
+        self.graph.addNode("srcNode", "RVSourceGroup")
+        folders = self.row("FOLDERS", "")
+        self.view._foldersItem = folders
+        item = self.row("Src", "srcNode")
+        self.view.selectionModel().select(
+            self.model.indexFromItem(item), QtCore.QItemSelectionModel.Select)
+
+        self._dragEnter()
+
+        self.assertTrue(self.view._draggingNonFolders)
+        self.assertFalse(bool(folders.flags() & Qt.ItemIsDropEnabled))
+
+    def test_dragging_a_folder_leaves_the_folders_row_droppable(self):
+        self.graph.addNode("folderNode", "RVFolderGroup")
+        folders = self.row("FOLDERS", "")
+        self.view._foldersItem = folders
+        item = self.row("Folder", "folderNode")
+        self.view.selectionModel().select(
+            self.model.indexFromItem(item), QtCore.QItemSelectionModel.Select)
+
+        self._dragEnter()
+
+        self.assertFalse(self.view._draggingNonFolders)
+        self.assertTrue(bool(folders.flags() & Qt.ItemIsDropEnabled))
+
+    def test_only_folder_groups_are_recorded_for_re_sorting(self):
+        self.graph.addNode("folderNode", "RVFolderGroup")
+        self.graph.addNode("seqNode", "RVSequenceGroup")
+        self.view.sortFolderChildren("folderNode")
+        self.view.sortFolderChildren("seqNode")
+        self.assertEqual(self.view._sortFolders, ["folderNode"])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode_panel.py b/src/test/golden/session_manager/unit/test_mode_panel.py
new file mode 100644
index 000000000..91076f093
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode_panel.py
@@ -0,0 +1,357 @@
+"""Gate 5 — mode methods that drive the panel widgets.
+
+Constructing the whole mode headlessly is not an option: `SessionManagerMode(name)`
+gets as far as parenting its dock and then **segfaults** under the offscreen platform
+(exit 139, reproducible), somewhere in the dock/WebEngine path. So each test builds
+the two or three real widgets the method under test actually touches and attaches them
+to an instance made with `object.__new__` — the same approach as test_mode.py, applied
+to the panel-facing half of the mode.
+
+What that buys over a mock: these are genuine QStandardItemModel / QTreeView /
+QListView objects, so selection, row layout and index arithmetic behave exactly as
+they do in RV, and only the RV graph underneath is faked.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class PanelTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode._inputOrderLock = False
+        self.mode._previewsEnabled = False
+        # updateInputs() checks this before rebuilding; the real constructor seeds it
+        # from commands.loadTotal(), which object.__new__ skips.
+        self.mode._progressiveLoadingInProgress = False
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = QtWidgets.QTreeView()
+        self.view.setModel(self.model)
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+
+        self.inputsModel = QtGui.QStandardItemModel()
+        self.inputsView = QtWidgets.QListView()
+        self.inputsView.setModel(self.inputsModel)
+        self.mode._inputsModel = self.inputsModel
+        self.mode._inputsView = self.inputsView
+
+        self.mode._viewLabel = QtWidgets.QLabel()
+        self.mode._prevViewButton = QtWidgets.QToolButton()
+        self.mode._nextViewButton = QtWidgets.QToolButton()
+
+    def tearDown(self):
+        self.view.setParent(None)
+        self.inputsView.setParent(None)
+
+    def treeRow(self, text, node, parentItem=None):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        rest = [QtGui.QStandardItem(""), QtGui.QStandardItem("")]
+        (parentItem or self.model.invisibleRootItem()).appendRow([item] + rest)
+        return item
+
+
+class TestUpdateNavUI(PanelTest):
+    def setUp(self):
+        super().setUp()
+        for n in ("a", "b", "c"):
+            self.graph.addNode(n, "RVSourceGroup")
+        self.graph.viewNode = "b"
+        self.graph.uiNames["b"] = "Middle"
+
+    def test_label_shows_the_view_nodes_ui_name(self):
+        self.mode.updateNavUI()
+        self.assertEqual(self.mode._viewLabel.text(), "Middle")
+
+    def test_both_buttons_enabled_when_both_neighbours_exist(self):
+        self.sm.commands.previousViewNode = lambda: "a"
+        self.sm.commands.nextViewNode = lambda: "c"
+        self.mode.updateNavUI()
+        self.assertTrue(self.mode._prevViewButton.isEnabled())
+        self.assertTrue(self.mode._nextViewButton.isEnabled())
+
+    def test_prev_disabled_at_the_start(self):
+        self.sm.commands.previousViewNode = lambda: None
+        self.sm.commands.nextViewNode = lambda: "c"
+        self.mode.updateNavUI()
+        self.assertFalse(self.mode._prevViewButton.isEnabled())
+        self.assertTrue(self.mode._nextViewButton.isEnabled())
+
+    def test_next_disabled_at_the_end(self):
+        self.sm.commands.previousViewNode = lambda: "a"
+        self.sm.commands.nextViewNode = lambda: None
+        self.mode.updateNavUI()
+        self.assertTrue(self.mode._prevViewButton.isEnabled())
+        self.assertFalse(self.mode._nextViewButton.isEnabled())
+
+    def test_no_view_node_leaves_the_label_alone(self):
+        self.graph.viewNode = None
+        self.mode._viewLabel.setText("sentinel")
+        self.mode.updateNavUI()
+        self.assertEqual(self.mode._viewLabel.text(), "sentinel")
+
+
+class TestUpdateInputs(PanelTest):
+    def setUp(self):
+        super().setUp()
+        for n in ("srcA", "srcB"):
+            self.graph.addNode(n, "RVSourceGroup")
+        self.graph.addNode("seq", "RVSequenceGroup", inputs=["srcA", "srcB"])
+        self.graph.uiNames.update({"srcA": "Source A", "srcB": "Source B"})
+        self.graph.viewNode = "seq"
+        self.mode.iconForNode = lambda node: QtGui.QIcon()
+
+    def rows(self):
+        return [self.inputsModel.item(r).data(Qt.UserRole + 2)
+                for r in range(self.inputsModel.rowCount())]
+
+    def test_lists_the_nodes_inputs_in_order(self):
+        self.mode.updateInputs("seq")
+        self.assertEqual(self.rows(), ["srcA", "srcB"])
+
+    def test_rebuilds_rather_than_appending(self):
+        self.mode.updateInputs("seq")
+        self.mode.updateInputs("seq")
+        self.assertEqual(self.rows(), ["srcA", "srcB"])
+
+    def test_follows_a_connection_change(self):
+        self.mode.updateInputs("seq")
+        self.graph.setNodeInputs("seq", ["srcB"])
+        self.mode.updateInputs("seq")
+        self.assertEqual(self.rows(), ["srcB"])
+
+    def test_a_node_with_no_inputs_empties_the_panel(self):
+        self.mode.updateInputs("seq")
+        self.graph.addNode("lonely", "RVSourceGroup")
+        self.mode.updateInputs("lonely")
+        self.assertEqual(self.rows(), [])
+
+    def test_rows_are_labelled_with_ui_names(self):
+        self.mode.updateInputs("seq")
+        texts = [self.inputsModel.item(r).text()
+                 for r in range(self.inputsModel.rowCount())]
+        self.assertEqual(texts, ["Source A", "Source B"])
+
+    def test_the_order_lock_is_clear_afterwards(self):
+        """Left set, every later reorder would be silently ignored."""
+        self.mode.updateInputs("seq")
+        self.assertFalse(self.mode._inputOrderLock)
+
+
+class TestSelectViewableNode(PanelTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.viewNode = "srcB"
+        self.mode.updateInputs = lambda node: None
+        self.category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([self.category])
+        self.a = self.treeRow("A", "srcA", self.category)
+        self.b = self.treeRow("B", "srcB", self.category)
+
+    def selected(self):
+        return [self.model.itemFromIndex(i).data(Qt.UserRole + 2)
+                for i in self.view.selectionModel().selectedIndexes()
+                if i.column() == 0]
+
+    def test_selects_the_row_for_the_view_node(self):
+        self.mode.selectViewableNode()
+        self.assertEqual(self.selected(), ["srcB"])
+
+    def test_selecting_replaces_any_previous_selection(self):
+        self.view.selectionModel().select(
+            self.model.indexFromItem(self.a), QtCore.QItemSelectionModel.Select)
+        self.mode.selectViewableNode()
+        self.assertEqual(self.selected(), ["srcB"])
+
+    def test_no_view_node_selects_nothing(self):
+        self.graph.viewNode = None
+        self.mode.selectViewableNode()
+        self.assertEqual(self.selected(), [])
+
+    def test_a_view_node_with_no_row_selects_nothing(self):
+        self.graph.addNode("hidden", "RVSourceGroup")
+        self.graph.viewNode = "hidden"
+        self.mode.selectViewableNode()
+        self.assertEqual(self.selected(), [])
+
+    def test_it_does_not_expand_the_node_row(self):
+        """The regression that produced a phantom sm_state.expandState.
+
+        selectViewableNode scrolls to the head of mapItems(); if that head were a
+        sub-component row, scrollTo would expand its parent and setItemExpandedState
+        would write a property Mu never writes.
+        """
+        sub = QtGui.QStandardItem("media")
+        sub.setData("srcB", Qt.UserRole + 2)
+        sub.setData(self.sm.MediaSubComponent, Qt.UserRole + 4)
+        self.b.appendRow([sub])
+
+        self.mode.selectViewableNode()
+
+        self.assertFalse(self.view.isExpanded(self.model.indexFromItem(self.b)),
+                         "the node row must not be expanded as a side effect")
+
+
+class TestRebuildInputsFromList(PanelTest):
+    def setUp(self):
+        super().setUp()
+        for n in ("srcA", "srcB"):
+            self.graph.addNode(n, "RVSourceGroup")
+        self.graph.addNode("seq", "RVSequenceGroup", inputs=["srcA", "srcB"])
+        self.graph.viewNode = "seq"
+        self.mode.updateInputs = lambda node: None
+
+    def putRows(self, nodes):
+        self.inputsModel.clear()
+        for n in nodes:
+            item = QtGui.QStandardItem(n)
+            item.setData(n, Qt.UserRole + 2)
+            self.inputsModel.appendRow(item)
+
+    def test_writes_the_model_order_back_to_the_graph(self):
+        self.putRows(["srcB", "srcA"])
+        self.mode.rebuildInputsFromList()
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["srcB", "srcA"])
+
+    def test_dropping_a_row_removes_the_input(self):
+        self.putRows(["srcA"])
+        self.mode.rebuildInputsFromList()
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["srcA"])
+
+    def test_the_lock_suppresses_the_write(self):
+        self.putRows(["srcB", "srcA"])
+        self.mode._inputOrderLock = True
+        self.mode.rebuildInputsFromList()
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["srcA", "srcB"])
+
+    def test_no_view_node_is_a_noop(self):
+        self.putRows(["srcB"])
+        self.graph.viewNode = None
+        self.mode.rebuildInputsFromList()
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["srcA", "srcB"])
+
+    def test_updates_are_re_enabled_afterwards(self):
+        self.putRows(["srcA", "srcB"])
+        self.mode.rebuildInputsFromList()
+        self.assertFalse(self.mode._disableUpdates)
+
+
+class TestInputsDeleteSlot(PanelTest):
+    def setUp(self):
+        super().setUp()
+        for n in ("srcA", "srcB", "srcC"):
+            self.graph.addNode(n, "RVSourceGroup")
+        self.graph.addNode("seq", "RVSequenceGroup", inputs=["srcA", "srcB", "srcC"])
+        self.graph.viewNode = "seq"
+        self.mode.updateInputs = lambda node: None
+        self.items = {}
+        for n in ("srcA", "srcB", "srcC"):
+            item = QtGui.QStandardItem(n)
+            item.setData(n, Qt.UserRole + 2)
+            self.inputsModel.appendRow(item)
+            self.items[n] = item
+
+    def select(self, *nodes):
+        model = self.inputsView.selectionModel()
+        model.clearSelection()
+        for n in nodes:
+            model.select(self.inputsModel.indexFromItem(self.items[n]),
+                         QtCore.QItemSelectionModel.Select)
+
+    def test_removes_the_selected_input(self):
+        self.select("srcB")
+        self.mode.inputsDeleteSlot(False)
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["srcA", "srcC"])
+
+    def test_removes_several_at_once(self):
+        self.select("srcA", "srcC")
+        self.mode.inputsDeleteSlot(False)
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["srcB"])
+
+    def test_no_selection_changes_nothing(self):
+        self.mode.inputsDeleteSlot(False)
+        self.assertEqual(self.graph.nodeConnections("seq")[0],
+                         ["srcA", "srcB", "srcC"])
+
+    def test_the_nodes_themselves_are_not_deleted(self):
+        """Removing an input detaches it; it must not delete the source."""
+        self.select("srcB")
+        self.mode.inputsDeleteSlot(False)
+        self.assertTrue(self.graph.nodeExists("srcB"))
+
+
+class TestSetItemExpandedState(PanelTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.mode.updateInputs = lambda node: None
+
+    def test_a_node_row_records_expansion_against_its_parent(self):
+        category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([category])
+        item = self.treeRow("A", "srcA", category)
+
+        self.mode.setItemExpandedState(self.model.indexFromItem(item), 1)
+
+        self.assertTrue(self.sm.isExpandedInParent("srcA", ""))
+
+    def test_collapsing_clears_it(self):
+        category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([category])
+        item = self.treeRow("A", "srcA", category)
+        idx = self.model.indexFromItem(item)
+
+        self.mode.setItemExpandedState(idx, 1)
+        self.mode.setItemExpandedState(idx, 0)
+
+        self.assertFalse(self.sm.isExpandedInParent("srcA", ""))
+
+    def test_a_category_row_records_against_the_session(self):
+        category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([category])
+
+        self.mode.setItemExpandedState(self.model.indexFromItem(category), 1)
+
+        self.assertEqual(
+            self.graph.getIntProperty("rv.session.sm_view.SOURCES"), [1])
+
+    def test_a_sub_component_row_records_against_the_hash(self):
+        category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([category])
+        node = self.treeRow("A", "srcA", category)
+        sub = QtGui.QStandardItem("left")
+        sub.setData("srcA", Qt.UserRole + 2)
+        sub.setData(self.sm.ViewSubComponent, Qt.UserRole + 4)
+        sub.setData("left", Qt.UserRole + 5)
+        node.appendRow([sub])
+
+        self.mode.setItemExpandedState(self.model.indexFromItem(sub), 1)
+
+        self.assertTrue(self.sm.isSubComponentExpanded("srcA", sub))
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode_slots.py b/src/test/golden/session_manager/unit/test_mode_slots.py
new file mode 100644
index 000000000..b3f84c40c
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode_slots.py
@@ -0,0 +1,626 @@
+"""Gate 5 — the session manager's panel slots: editors, selection, reordering.
+
+Three families live here.
+
+The **editor tab strip** (`addEditor`/`useEditor`/`reloadEditorTab`) is what the eleven
+sibling modes push their `.ui` panels into. Each sibling has now been checked to hand
+over the right widget under the right name; this is the other side of that contract,
+and the part a golden can only see for view types the harness can build.
+
+The **selection readers** (`selectedItems`, `selectedConvertedSubComponents`) turn a Qt
+selection into a node list, and every destructive action — delete, folder, reorder —
+is driven from that list. Selection spans all three columns of the tree, so the
+column-0 filter is the difference between deleting one node and deleting it three
+times.
+
+**`reorderSelected`** is the largest piece of arithmetic in the package: it moves a
+possibly-discontiguous selection up or down one row and rewrites the inputs list to
+match. A drag reorder is not reproducible headlessly, so the button path is the only
+way to pin it.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Event:
+    def __init__(self, contents=""):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+class _Timer:
+    def __init__(self):
+        self.starts = []
+        self.stops = 0
+
+    def start(self, ms):
+        self.starts.append(ms)
+
+    def stop(self):
+        self.stops += 1
+
+
+class SlotTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode._inputOrderLock = False
+        self.mode._previewsEnabled = False
+        self.mode._progressiveLoadingInProgress = False
+        self.mode._editors = []
+        self.mode._lazyUpdateTimer = _Timer()
+        self.mode._lazySetInputsTimer = _Timer()
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = QtWidgets.QTreeView()
+        self.view.setModel(self.model)
+        self.view.setSelectionMode(QtWidgets.QAbstractItemView.ExtendedSelection)
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+
+        self.inputsModel = QtGui.QStandardItemModel()
+        self.inputsView = QtWidgets.QListView()
+        self.inputsView.setModel(self.inputsModel)
+        self.inputsView.setSelectionMode(
+            QtWidgets.QAbstractItemView.ExtendedSelection)
+        self.mode._inputsModel = self.inputsModel
+        self.mode._inputsView = self.inputsView
+
+    def tearDown(self):
+        self.view.setParent(None)
+        self.inputsView.setParent(None)
+
+    def treeRow(self, text, node, parentItem=None, subType=None, value=None):
+        """A three-column tree row, as newNodeRow() builds it."""
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        if subType is not None:
+            item.setData(subType, Qt.UserRole + 4)
+        if value is not None:
+            item.setData(value, Qt.UserRole + 5)
+        rest = [QtGui.QStandardItem(""), QtGui.QStandardItem("")]
+        (parentItem or self.model.invisibleRootItem()).appendRow([item] + rest)
+        return item
+
+    def selectTree(self, items):
+        smodel = self.view.selectionModel()
+        smodel.clearSelection()
+        for item in items:
+            smodel.select(self.model.indexFromItem(item),
+                          QtCore.QItemSelectionModel.Select
+                          | QtCore.QItemSelectionModel.Rows)
+
+
+class TestEditorTabs(SlotTest):
+    def setUp(self):
+        super().setUp()
+        self.tree = QtWidgets.QTreeWidget()
+        self.mode._uiTreeWidget = self.tree
+
+    def tearDown(self):
+        self.tree.setParent(None)
+        super().tearDown()
+
+    def panel(self, name="Stack"):
+        widget = QtWidgets.QWidget()
+        self.mode.addEditor(name, widget)
+        return widget
+
+    def test_adding_an_editor_creates_a_top_level_row(self):
+        self.panel()
+        self.assertEqual(self.tree.topLevelItemCount(), 1)
+        self.assertEqual(self.tree.topLevelItem(0).text(0), "Stack")
+
+    def test_the_widget_is_hosted_under_the_row(self):
+        """The panel goes on a child row, not the labelled one, so the label
+        stays visible above it."""
+        widget = self.panel()
+        item = self.tree.topLevelItem(0)
+        self.assertEqual(item.childCount(), 1)
+        self.assertIs(self.tree.itemWidget(item.child(0), 0), widget)
+
+    def test_the_row_starts_expanded(self):
+        self.panel()
+        self.assertTrue(self.tree.topLevelItem(0).isExpanded())
+
+    def test_the_widget_fills_its_background(self):
+        """Without this the panel is transparent over the tree's alternating rows."""
+        widget = self.panel()
+        self.assertTrue(widget.autoFillBackground())
+
+    def test_the_label_row_is_not_selectable(self):
+        self.panel()
+        self.assertEqual(self.tree.topLevelItem(0).flags(), Qt.ItemIsEnabled)
+
+    def test_each_editor_is_remembered(self):
+        self.panel("Stack")
+        self.panel("Composite Function")
+        self.assertEqual([e.text(0) for e in self.mode._editors],
+                         ["Stack", "Composite Function"])
+
+    def test_use_editor_unhides_only_the_named_one(self):
+        self.panel("Stack")
+        self.panel("Composite Function")
+        for e in self.mode._editors:
+            e.setHidden(True)
+
+        self.mode.useEditor("Composite Function")
+
+        hidden = {e.text(0): e.isHidden() for e in self.mode._editors}
+        self.assertEqual(hidden, {"Stack": True, "Composite Function": False})
+
+    def test_use_editor_with_an_unknown_name_shows_nothing(self):
+        self.panel("Stack")
+        self.mode._editors[0].setHidden(True)
+        self.mode.useEditor("Nonexistent")
+        self.assertTrue(self.mode._editors[0].isHidden())
+
+    def test_reload_hides_everything_and_reasks_the_siblings(self):
+        """Switching a folder's view type has to swap one editor for another; the
+        siblings answer the event and unhide themselves."""
+        self.panel("Stack")
+        self.panel("Layout")
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.graph.viewNode = "folder"
+
+        self.mode.reloadEditorTab()
+
+        self.assertTrue(all(e.isHidden() for e in self.mode._editors))
+        self.assertIn(("session-manager-load-ui", "folder"), self.graph.events)
+
+
+class TestSelectionReaders(SlotTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.a = self.treeRow("A", "srcA")
+        self.b = self.treeRow("B", "srcB")
+
+    def test_no_selection_reads_as_empty(self):
+        self.assertEqual(self.mode.selectedItems(), [])
+        self.assertEqual(self.mode.selectedConvertedSubComponents(), [])
+
+    def test_one_row_reads_as_one_item_not_three(self):
+        """Selection spans all three columns; without the column filter a delete
+        would run three times on the same node."""
+        self.selectTree([self.a])
+        self.assertEqual(len(self.mode.selectedItems()), 1)
+
+    def test_the_item_returned_is_the_name_column(self):
+        self.selectTree([self.a])
+        self.assertEqual(self.sm.itemNode(self.mode.selectedItems()[0]), "srcA")
+
+    def test_several_rows_read_in_order(self):
+        self.selectTree([self.a, self.b])
+        self.assertEqual([self.sm.itemNode(i) for i in self.mode.selectedItems()],
+                         ["srcA", "srcB"])
+
+    def test_converted_subcomponents_returns_plain_nodes_unchanged(self):
+        self.selectTree([self.a, self.b])
+        self.assertEqual(self.mode.selectedConvertedSubComponents(),
+                         ["srcA", "srcB"])
+
+    def test_a_row_for_a_deleted_node_is_skipped(self):
+        """A row can outlive its node between a delete and the next updateTree."""
+        ghost = self.treeRow("Gone", "noSuchNode")
+        self.selectTree([self.a, ghost])
+        self.assertEqual(self.mode.selectedConvertedSubComponents(), ["srcA"])
+
+    def test_a_subcomponent_row_is_converted_to_a_source(self):
+        """Acting on a layer row has to act on a real node, not on the row."""
+        sub = self.treeRow("layer", "srcA", parentItem=self.a,
+                           subType=self.sm.LayerSubComponent, value="R")
+        self.mode.sourceFromSubComponent = lambda item, node: "convertedNode"
+
+        self.selectTree([sub])
+
+        self.assertEqual(self.mode.selectedConvertedSubComponents(),
+                         ["convertedNode"])
+
+    def test_the_conversion_runs_with_updates_disabled(self):
+        """It creates a node, which would otherwise re-enter updateTree and
+        invalidate the very items being iterated."""
+        seen = []
+        sub = self.treeRow("layer", "srcA", parentItem=self.a,
+                           subType=self.sm.LayerSubComponent, value="R")
+        self.mode.sourceFromSubComponent = lambda item, node: (
+            seen.append(self.mode._disableUpdates) or "converted")
+
+        self.selectTree([sub])
+        self.mode.selectedConvertedSubComponents()
+
+        self.assertEqual(seen, [True])
+        self.assertFalse(self.mode._disableUpdates, "the flag must be cleared again")
+
+
+class TestSelectInputsRange(SlotTest):
+    def setUp(self):
+        super().setUp()
+        for name in ("a", "b", "c", "d"):
+            item = QtGui.QStandardItem(name)
+            item.setData(name, Qt.UserRole + 2)
+            self.inputsModel.appendRow(item)
+
+    def selectedRows(self):
+        return sorted(i.row()
+                      for i in self.inputsView.selectionModel().selectedIndexes())
+
+    def test_it_selects_the_rows_it_is_given(self):
+        self.mode.selectInputsRange([1, 2])
+        self.assertEqual(self.selectedRows(), [1, 2])
+
+    def test_a_discontiguous_range_is_selected_as_given(self):
+        """reorderSelected reuses this to restore a gapped selection after a move."""
+        self.mode.selectInputsRange([0, 3])
+        self.assertEqual(self.selectedRows(), [0, 3])
+
+    def test_it_adds_to_the_existing_selection(self):
+        self.mode.selectInputsRange([0])
+        self.mode.selectInputsRange([2])
+        self.assertEqual(self.selectedRows(), [0, 2])
+
+    def test_an_empty_list_selects_nothing(self):
+        self.mode.selectInputsRange([])
+        self.assertEqual(self.selectedRows(), [])
+
+
+class TestReorderSelected(SlotTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("a", "RVSourceGroup")
+        self.graph.addNode("b", "RVSourceGroup")
+        self.graph.addNode("c", "RVSourceGroup")
+        self.graph.addNode("d", "RVSourceGroup")
+        self.graph.addNode("seq", "RVSequenceGroup",
+                           inputs=["a", "b", "c", "d"])
+        self.graph.viewNode = "seq"
+
+        for name in ("a", "b", "c", "d"):
+            item = QtGui.QStandardItem(name)
+            item.setData(name, Qt.UserRole + 2)
+            self.inputsModel.appendRow(item)
+
+    def selectRows(self, rows):
+        smodel = self.inputsView.selectionModel()
+        smodel.clearSelection()
+        for row in rows:
+            smodel.select(self.inputsModel.index(row, 0),
+                          QtCore.QItemSelectionModel.Select)
+
+    def inputs(self):
+        return self.graph.nodeConnections("seq")[0]
+
+    def test_moving_one_row_up_swaps_it_with_its_neighbour(self):
+        self.selectRows([1])
+        self.mode.reorderSelected(True, False)
+        self.assertEqual(self.inputs(), ["b", "a", "c", "d"])
+
+    def test_moving_one_row_down_swaps_it_the_other_way(self):
+        self.selectRows([1])
+        self.mode.reorderSelected(False, False)
+        self.assertEqual(self.inputs(), ["a", "c", "b", "d"])
+
+    def test_a_contiguous_block_moves_together(self):
+        self.selectRows([1, 2])
+        self.mode.reorderSelected(True, False)
+        self.assertEqual(self.inputs(), ["b", "c", "a", "d"])
+
+    def test_the_top_row_cannot_move_up(self):
+        self.selectRows([0])
+        self.mode.reorderSelected(True, False)
+        self.assertEqual(self.inputs(), ["a", "b", "c", "d"])
+
+    def test_the_bottom_row_cannot_move_down(self):
+        self.selectRows([3])
+        self.mode.reorderSelected(False, False)
+        self.assertEqual(self.inputs(), ["a", "b", "c", "d"])
+
+    def test_nothing_selected_is_a_noop(self):
+        self.mode.reorderSelected(True, False)
+        self.assertEqual(self.inputs(), ["a", "b", "c", "d"])
+
+    def test_the_destination_row_is_selected(self):
+        """Otherwise a second click on the button moves a different row. In RV the
+        model is rebuilt by the inputs-changed event before this runs, which clears
+        the old selection; here only the addition is observable."""
+        self.selectRows([2])
+        self.mode.reorderSelected(True, False)
+        rows = {i.row()
+                for i in self.inputsView.selectionModel().selectedIndexes()}
+        self.assertIn(1, rows)
+
+    def test_the_model_is_left_to_the_inputs_changed_event(self):
+        """reorderSelected rewrites the graph only; updateInputs rebuilds the rows
+        when RV reports the change back. Rebuilding here as well would double it."""
+        self.selectRows([1])
+        self.mode.reorderSelected(True, False)
+        self.assertEqual(
+            [self.inputsModel.item(r).data(Qt.UserRole + 2)
+             for r in range(self.inputsModel.rowCount())],
+            ["a", "b", "c", "d"])
+
+
+class TestItemPressed(SlotTest):
+    """Clicking the radio column of a sub-component row switches the view to it."""
+
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.viewed = []
+        self.mode.viewByIndex = lambda index, model: self.viewed.append(
+            model.itemFromIndex(index).data(Qt.UserRole + 2))
+        self.parent = self.treeRow("A", "srcA")
+
+    def pressed(self, item, column):
+        index = self.model.indexFromItem(item).sibling(item.row(), column)
+        self.mode.itemPressed(index, self.model)
+
+    def test_the_radio_column_of_a_layer_row_switches_the_view(self):
+        sub = self.treeRow("R", "srcA", parentItem=self.parent,
+                           subType=self.sm.LayerSubComponent, value="R")
+        self.pressed(sub, 1)
+        self.assertEqual(self.viewed, ["srcA"])
+
+    def test_the_name_column_does_not(self):
+        """Clicking the name starts a rename; it must not also change the view."""
+        sub = self.treeRow("R", "srcA", parentItem=self.parent,
+                           subType=self.sm.LayerSubComponent, value="R")
+        self.pressed(sub, 0)
+        self.assertEqual(self.viewed, [])
+
+    def test_a_plain_node_row_does_not(self):
+        self.pressed(self.parent, 1)
+        self.assertEqual(self.viewed, [])
+
+    def test_a_media_row_does_not(self):
+        """The media row is the file heading, not a selectable component."""
+        sub = self.treeRow("movie.mov", "srcA", parentItem=self.parent,
+                           subType=self.sm.MediaSubComponent, value="movie.mov")
+        self.pressed(sub, 1)
+        self.assertEqual(self.viewed, [])
+
+    def test_a_view_row_switches_the_view(self):
+        sub = self.treeRow("left", "srcA", parentItem=self.parent,
+                           subType=self.sm.ViewSubComponent, value="left")
+        self.pressed(sub, 1)
+        self.assertEqual(self.viewed, ["srcA"])
+
+
+class TestViewSelectionChanged(SlotTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.viewed = []
+        self.mode.viewByIndex = lambda index, model: self.viewed.append(
+            model.itemFromIndex(index).data(Qt.UserRole + 2))
+
+        self.category = QtGui.QStandardItem("SOURCES")
+        self.model.appendRow([self.category])
+        self.a = self.treeRow("A", "srcA", parentItem=self.category)
+        self.b = self.treeRow("B", "srcB", parentItem=self.category)
+
+    def changeTo(self, item):
+        smodel = self.view.selectionModel()
+        smodel.clearSelection()
+        selection = QtCore.QItemSelection(self.model.indexFromItem(item),
+                                          self.model.indexFromItem(item))
+        smodel.select(selection, QtCore.QItemSelectionModel.Select
+                      | QtCore.QItemSelectionModel.Rows)
+        self.mode.viewSelectionChanged(selection, QtCore.QItemSelection())
+
+    def test_selecting_a_top_level_row_views_it(self):
+        self.changeTo(self.b)
+        self.assertEqual(self.viewed, ["srcB"])
+
+    def test_a_nested_row_does_not_change_the_view(self):
+        """Sub-component rows are two levels down and have their own radio column;
+        merely selecting one must not switch the view."""
+        sub = self.treeRow("R", "srcA", parentItem=self.a,
+                           subType=self.sm.LayerSubComponent, value="R")
+        self.changeTo(sub)
+        self.assertEqual(self.viewed, [])
+
+    def test_an_empty_change_is_a_noop(self):
+        self.mode.viewSelectionChanged(QtCore.QItemSelection(),
+                                       QtCore.QItemSelection())
+        self.assertEqual(self.viewed, [])
+
+    def test_the_select_current_view_button_reselects_instead(self):
+        calls = []
+        self.mode.selectViewableNode = lambda: calls.append(1)
+        self.mode.selectCurrentViewSlot(False)
+        self.assertEqual(calls, [1])
+
+
+class TestDeleteViewableSlot(SlotTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addNode("srcA", "RVSourceGroup")
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.viewNode = "srcA"
+
+    def row(self, text, node, parent=None):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        if parent is not None:
+            item.setData(parent, Qt.UserRole + 1)
+        rest = [QtGui.QStandardItem(""), QtGui.QStandardItem("")]
+        self.model.invisibleRootItem().appendRow([item] + rest)
+        return item
+
+    def test_it_deletes_the_selected_node(self):
+        item = self.row("A", "srcA")
+        self.selectTree([item])
+        self.mode.deleteViewableSlot(False)
+        self.assertNotIn("srcA", self.graph.nodes)
+
+    def test_it_deletes_every_selected_node(self):
+        a = self.row("A", "srcA")
+        b = self.row("B", "srcB")
+        self.selectTree([a, b])
+        self.mode.deleteViewableSlot(False)
+        self.assertEqual(self.graph.deleted, ["srcA", "srcB"])
+
+    def test_it_queues_a_rebuild(self):
+        self.selectTree([self.row("A", "srcA")])
+        self.mode.deleteViewableSlot(False)
+        self.assertEqual(self.mode._lazyUpdateTimer.starts, [0])
+
+    def test_a_node_in_two_folders_is_only_unlinked_from_this_one(self):
+        """Deleting it outright would empty the other folder too."""
+        self.graph.addNode("f1", "RVFolderGroup", inputs=["srcA"])
+        self.graph.addNode("f2", "RVFolderGroup", inputs=["srcA"])
+        item = self.row("A", "srcA", parent="f1")
+
+        self.selectTree([item])
+        self.mode.deleteViewableSlot(False)
+
+        self.assertIn("srcA", self.graph.nodes)
+        self.assertEqual(self.graph.nodeConnections("f1")[0], [])
+        self.assertEqual(self.graph.nodeConnections("f2")[0], ["srcA"])
+
+    def test_a_node_in_one_folder_is_deleted_outright(self):
+        self.graph.addNode("f1", "RVFolderGroup", inputs=["srcA"])
+        item = self.row("A", "srcA", parent="f1")
+
+        self.selectTree([item])
+        self.mode.deleteViewableSlot(False)
+
+        self.assertNotIn("srcA", self.graph.nodes)
+
+    def test_a_delete_that_throws_does_not_abort_the_rest(self):
+        def boom(node):
+            raise RuntimeError("node is in use")
+
+        self.sm.commands.deleteNode = boom
+        self.selectTree([self.row("A", "srcA")])
+        self.mode.deleteViewableSlot(False)
+        self.assertFalse(self.mode._disableUpdates,
+                         "the update freeze must be lifted even on failure")
+
+
+class TestPrintRows(SlotTest):
+    """Mu's debug dump of the inputs model; the event wrapper keeps it reachable."""
+
+    def setUp(self):
+        super().setUp()
+        for name in ("a", "b"):
+            self.inputsModel.appendRow(QtGui.QStandardItem(name))
+
+    def capture(self, call):
+        import contextlib
+        import io
+
+        buffer = io.StringIO()
+        with contextlib.redirect_stdout(buffer):
+            call()
+        return buffer.getvalue()
+
+    def test_it_prints_one_line_per_row(self):
+        out = self.capture(self.mode.printRows)
+        self.assertIn("row 0 -> a", out)
+        self.assertIn("row 1 -> b", out)
+
+    def test_an_empty_model_prints_no_rows(self):
+        self.inputsModel.clear()
+        out = self.capture(self.mode.printRows)
+        self.assertNotIn("row ", out)
+
+    def test_the_event_wrapper_prints_the_same_thing(self):
+        out = self.capture(lambda: self.mode.showRows(_Event()))
+        self.assertIn("row 0 -> a", out)
+
+
+class TestColorSlots(SlotTest):
+    """The Create Image dialog's colour swatch."""
+
+    def setUp(self):
+        super().setUp()
+        self.mode._cidColorButton = QtWidgets.QPushButton()
+        self.mode._cidColor = QtGui.QColor("white")
+        self.addCleanup(self.mode._cidColorButton.setParent, None)
+
+    def test_a_new_colour_is_remembered(self):
+        self.mode.newColorSlot(QtGui.QColor(10, 20, 30))
+        self.assertEqual(self.mode._cidColor, QtGui.QColor(10, 20, 30))
+
+    def test_a_new_colour_repaints_the_swatch(self):
+        self.mode.newColorSlot(QtGui.QColor(10, 20, 30))
+        self.assertIn("rgb(10,20,30)", self.mode._cidColorButton.styleSheet())
+
+    def test_choosing_opens_the_dialog_on_the_current_colour(self):
+        opened = []
+        current = []
+
+        class _Dialog:
+            def open(self):
+                opened.append(1)
+
+            def setCurrentColor(self, color):
+                current.append(color)
+
+        self.mode._colorDialog = _Dialog()
+        self.mode.chooseColorSlot(False)
+
+        self.assertEqual(opened, [1])
+        self.assertEqual(current, [QtGui.QColor("white")])
+
+
+class TestConstructionIsNotUnitTestable(SlotTest):
+    """`SessionManagerMode(name)` and `createMode()` have no unit test on purpose.
+
+    Constructing the mode parents a dock widget to the session window and then
+    segfaults under the offscreen platform (exit 139, reproducible) somewhere in the
+    dock/WebEngine path. Every other method is reachable with `object.__new__`, so
+    the constructor is the one symbol that has to be pinned by the golden gates
+    instead: gate 3 launches RV with the package loaded, and all 38 scenarios drive
+    a constructed mode.
+
+    What can be checked here is the part of the contract the goldens cannot see —
+    that the factory RV's loader calls exists and names the class it is supposed to.
+    """
+
+    def test_the_module_exposes_the_factory_rv_calls(self):
+        self.assertTrue(callable(self.sm.createMode))
+
+    def test_the_factory_builds_the_session_manager_mode(self):
+        import inspect
+
+        source = inspect.getsource(self.sm.createMode)
+        self.assertIn("SessionManagerMode", source)
+
+    def test_the_mode_accessor_is_unset_until_one_is_constructed(self):
+        """theMode() is how the sibling modes and the Mu callers reach it."""
+        self.sm._theMode = None
+        self.assertIsNone(self.sm.theMode())
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_mode_tree_build.py b/src/test/golden/session_manager/unit/test_mode_tree_build.py
new file mode 100644
index 000000000..6b566272e
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_mode_tree_build.py
@@ -0,0 +1,775 @@
+"""Gate 5 — building the session tree: `updateTree` and the rows it makes.
+
+`updateTree` is the method the whole panel is: it clears the model, sorts the session's
+view nodes into the six category headings, and recurses into folders. Every golden
+scenario photographs its output, so its overall shape is well pinned — but a golden
+only sees the sessions the harness can build headlessly, which is a handful of
+sources, sequences and folders. The category assignment for the other node types, the
+suppression of folder children at the top level, and the per-row data roles are not
+in any of those pictures.
+
+The data roles matter more than they look. Every other method in the package reads a
+row through them — `itemNode` is `UserRole + 2`, the sort key is `UserRole + 3`, the
+sub-component type is `UserRole + 4` — so a row built with the wrong role is a row
+that silently drops out of selection, sorting and drag and drop.
+
+`sourceFromSubComponent` and `newSubComponentNode` are the "view a layer on its own"
+path: they create a real source node for a sub-component and file it under a
+components folder. That is genuinely destructive to a session and is dropped from the
+golden inventory for it, which leaves this as the only place it is checked.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class _Event:
+    def __init__(self, contents=""):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+class _Timer:
+    def __init__(self):
+        self.starts = []
+        self.stops = 0
+
+    def start(self, ms):
+        self.starts.append(ms)
+
+    def stop(self):
+        self.stops += 1
+
+
+class TreeTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._disableUpdates = False
+        self.mode._inputOrderLock = False
+        self.mode._previewsEnabled = False
+        self.mode._progressiveLoadingInProgress = False
+        self.mode._darkUI = False
+        self.mode._srcNodeKeys = []
+        self.mode._grpNodeValues = []
+        self.mode._editors = []
+        self.mode._lazyUpdateTimer = _Timer()
+        fallback = QtGui.QPixmap(8, 8)
+        fallback.fill(QtGui.QColor("grey"))
+        self.mode._fallbackSourceIcon = QtGui.QIcon(fallback)
+        self.mode._viewIcon = QtGui.QIcon()
+        self.mode._layerIcon = QtGui.QIcon()
+        self.mode._channelIcon = QtGui.QIcon()
+        self.mode.selectViewableNode = lambda: None
+        self.mode.iconForNode = lambda node: QtGui.QIcon()
+
+        self.model = QtGui.QStandardItemModel()
+        self.view = self.sm.NodeTreeView(None)
+        self.view.setModel(self.model)
+        self.mode._viewModel = self.model
+        self.mode._viewTreeView = self.view
+
+        self.inputsModel = QtGui.QStandardItemModel()
+        self.inputsView = QtWidgets.QListView()
+        self.inputsView.setModel(self.inputsModel)
+        self.mode._inputsModel = self.inputsModel
+        self.mode._inputsView = self.inputsView
+
+    def tearDown(self):
+        self.view.setParent(None)
+        self.inputsView.setParent(None)
+
+    def addViewNode(self, node, nodeType, inputs=None):
+        """A top-level session node. A source group gets a real source inside it,
+        the way RV builds one: newNodeRow reaches through the group for the media
+        and the component request."""
+        if nodeType == "RVSourceGroup":
+            self.graph.addSourceGroup(node)
+        else:
+            self.graph.addNode(node, nodeType, inputs=inputs)
+            self.graph.viewNodes.append(node)
+        if inputs is not None:
+            self.graph.connections[node] = list(inputs)
+        if self.graph.viewNode is None:
+            self.graph.viewNode = node
+        return node
+
+    def categories(self):
+        root = self.model.invisibleRootItem()
+        return {root.child(r, 0).text(): root.child(r, 0)
+                for r in range(root.rowCount())}
+
+    def childNodes(self, item):
+        return [self.sm.itemNode(item.child(r, 0)) for r in range(item.rowCount())]
+
+
+class TestUpdateTree(TreeTest):
+    def test_an_empty_session_leaves_an_empty_model(self):
+        self.mode.updateTree()
+        self.assertEqual(self.model.rowCount(), 0)
+
+    def test_the_columns_are_named(self):
+        self.mode.updateTree()
+        self.assertEqual(
+            [self.model.horizontalHeaderItem(c).text() for c in range(3)],
+            ["Name", "*", "*"])
+
+    def test_a_source_lands_under_sources(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.assertEqual(self.childNodes(self.categories()["SOURCES"]), ["srcA"])
+
+    def test_each_node_type_lands_in_its_own_category(self):
+        for node, nodeType, category in (
+            ("src", "RVSourceGroup", "SOURCES"),
+            ("seq", "RVSequenceGroup", "SEQUENCES"),
+            ("stk", "RVStackGroup", "STACKS"),
+            ("lay", "RVLayoutGroup", "LAYOUTS"),
+            ("fld", "RVFolderGroup", "FOLDERS"),
+        ):
+            with self.subTest(nodeType=nodeType):
+                self.addViewNode(node, nodeType)
+        self.mode.updateTree()
+
+        got = {name: self.childNodes(item)
+               for name, item in self.categories().items()}
+        self.assertEqual(got.get("SOURCES"), ["src"])
+        self.assertEqual(got.get("SEQUENCES"), ["seq"])
+        self.assertEqual(got.get("STACKS"), ["stk"])
+        self.assertEqual(got.get("LAYOUTS"), ["lay"])
+        self.assertEqual(got.get("FOLDERS"), ["fld"])
+
+    def test_an_unrecognised_type_lands_under_other(self):
+        self.addViewNode("thing", "RVSomethingElse")
+        self.mode.updateTree()
+        self.assertEqual(self.childNodes(self.categories()["OTHER"]), ["thing"])
+
+    def test_empty_categories_are_not_shown(self):
+        """All six exist; only the populated ones are added to the model."""
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.assertEqual(list(self.categories()), ["SOURCES"])
+
+    def test_a_node_inside_a_folder_is_not_also_listed_at_the_top(self):
+        """Otherwise every foldered source appears twice, once in each place."""
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.addViewNode("folder", "RVFolderGroup", inputs=["srcA"])
+
+        self.mode.updateTree()
+
+        categories = self.categories()
+        self.assertNotIn("SOURCES", categories)
+        self.assertEqual(self.childNodes(categories["FOLDERS"]), ["folder"])
+
+    def test_a_foldered_node_is_listed_under_its_folder(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.addViewNode("folder", "RVFolderGroup", inputs=["srcA"])
+
+        self.mode.updateTree()
+
+        folderRow = self.categories()["FOLDERS"].child(0, 0)
+        self.assertEqual(self.childNodes(folderRow), ["srcA"])
+
+    def test_a_second_update_does_not_double_the_rows(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.mode.updateTree()
+        self.assertEqual(self.childNodes(self.categories()["SOURCES"]), ["srcA"])
+
+    def test_the_update_freeze_skips_it_entirely(self):
+        """Several methods set the freeze while they mutate the graph; rebuilding
+        underneath them destroys the items they are still holding."""
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.mode._disableUpdates = True
+        self.graph.addNode("srcB", "RVSourceGroup")
+        self.graph.viewNodes.append("srcB")
+
+        self.mode.updateTree()
+
+        self.assertEqual(self.childNodes(self.categories()["SOURCES"]), ["srcA"])
+
+    def test_no_view_node_clears_the_model(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.graph.viewNode = None
+
+        self.mode.updateTree()
+
+        self.assertEqual(self.model.rowCount(), 0)
+
+    def test_the_folders_row_is_handed_to_the_tree_view(self):
+        """dragEnterEvent flips this row's drop flag; without it no drop target."""
+        self.addViewNode("folder", "RVFolderGroup")
+        self.mode.updateTree()
+        self.assertIsNotNone(self.view._foldersItem)
+        self.assertEqual(self.view._foldersItem.text(), "FOLDERS")
+
+    def test_only_the_folders_category_accepts_drops(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.addViewNode("folder", "RVFolderGroup")
+        self.mode.updateTree()
+
+        categories = self.categories()
+        self.assertTrue(categories["FOLDERS"].flags() & Qt.ItemIsDropEnabled)
+        self.assertFalse(categories["SOURCES"].flags() & Qt.ItemIsDropEnabled)
+
+    def test_the_expansion_of_a_category_is_remembered_in_the_session(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.assertEqual(self.graph.getIntProperty("rv.session.sm_view.SOURCES"), [1])
+
+    def test_a_collapsed_category_stays_collapsed(self):
+        self.addViewNode("srcA", "RVSourceGroup")
+        self.mode.updateTree()
+        self.graph.seedInt("#Session.sm_view.SOURCES", [0])
+
+        self.mode.updateTree()
+
+        item = self.categories()["SOURCES"]
+        self.assertFalse(self.view.isExpanded(self.model.indexFromItem(item)))
+
+    def test_the_source_node_map_is_rebuilt_not_appended_to(self):
+        """updateNodePreviewEvent looks a group up through it; stale pairs point
+        the preview at a node that no longer exists."""
+        self.graph.addSourceGroup("srcA")
+        self.graph.viewNodes = ["srcA"]
+        self.graph.viewNode = "srcA"
+
+        self.mode.updateTree()
+        self.mode.updateTree()
+
+        self.assertEqual(self.mode._srcNodeKeys, ["srcA_source"])
+        self.assertEqual(self.mode._grpNodeValues, ["srcA"])
+
+
+class TestNewNodeRow(TreeTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA")
+        self.graph.uiNames["srcA"] = "Source A"
+        self.graph.viewNode = "srcA"
+        self.mode.iconForNode = lambda node: QtGui.QIcon()
+        self.root = self.model.invisibleRootItem()
+
+    def row(self, node="srcA", parent="", recursive=False):
+        self.mode.newNodeRow(self.root, node, parent, recursive)
+        return self.root.child(self.root.rowCount() - 1, 0)
+
+    def test_the_row_is_labelled_with_the_ui_name(self):
+        self.assertEqual(self.row().text(), "Source A")
+
+    def test_the_node_is_stored_where_itemNode_reads_it(self):
+        self.assertEqual(self.sm.itemNode(self.row()), "srcA")
+
+    def test_the_parent_is_stored_where_itemParentNode_reads_it(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        item = self.row(parent="folder")
+        self.assertEqual(self.sm.itemParentNode(item), "folder")
+
+    def test_the_row_is_marked_as_a_plain_node(self):
+        self.assertEqual(self.sm.itemSubComponentType(self.row()),
+                         self.sm.NotASubComponent)
+
+    def test_the_sort_key_is_stored_for_the_models_sort_role(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.graph.seedString("srcA.sm_state.sortKeyParent", ["folder"])
+        self.graph.seedInt("srcA.sm_state.sortKey", [7])
+
+        item = self.row(parent="folder")
+
+        self.assertEqual(item.data(Qt.UserRole + 3), 7)
+
+    def test_a_row_is_three_columns_wide(self):
+        self.row()
+        self.assertEqual(self.root.columnCount(), 3)
+
+    def test_the_view_node_is_ticked(self):
+        item = self.row()
+        status = self.root.child(item.row(), 2)
+        self.assertEqual(status.text(), "✔")
+
+    def test_a_node_that_is_not_the_view_is_not_ticked(self):
+        self.graph.addSourceGroup("srcB")
+        item = self.row("srcB")
+        self.assertEqual(self.root.child(item.row(), 2).text(), "")
+
+    def test_a_plain_node_is_not_a_drop_target(self):
+        self.assertFalse(self.row().flags() & Qt.ItemIsDropEnabled)
+
+    def test_a_folder_is_a_drop_target(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.assertTrue(self.row("folder").flags() & Qt.ItemIsDropEnabled)
+
+    def test_every_row_is_draggable_and_renamable(self):
+        item = self.row()
+        self.assertTrue(item.flags() & Qt.ItemIsDragEnabled)
+        self.assertTrue(item.isEditable())
+
+    def test_tabs_are_stripped_from_the_tooltip(self):
+        """Tabs in tooltips crash Qt on win32; Mu replaces them for that reason."""
+        self.graph.seedString("srcA.sm_state.toolTip", ["a\tb"])
+        self.assertEqual(self.row().toolTip(), "a b")
+
+    def test_a_node_with_no_tooltip_property_gets_an_empty_one(self):
+        self.assertEqual(self.row().toolTip(), "")
+
+    def test_a_folder_recurses_into_its_children(self):
+        self.graph.addNode("folder", "RVFolderGroup", inputs=["srcA"])
+        item = self.row("folder", recursive=True)
+        self.assertEqual(self.childNodes(item), ["srcA"])
+
+    def test_a_folder_does_not_recurse_when_not_asked_to(self):
+        self.graph.addNode("folder", "RVFolderGroup", inputs=["srcA"])
+        item = self.row("folder")
+        self.assertEqual(item.rowCount(), 0)
+
+    def test_a_previously_expanded_row_is_re_expanded(self):
+        self.graph.addNode("folder", "RVFolderGroup", inputs=["srcA"])
+        self.graph.seedString("folder.sm_state.expandState", [""])
+        item = self.row("folder", recursive=True)
+        self.assertTrue(self.view.isExpanded(self.model.indexFromItem(item)))
+
+    def test_previews_off_leaves_the_name_visible(self):
+        self.graph.addSourceGroup("srcB")
+        item = self.row("srcB")
+        self.assertNotEqual(item.text(), "")
+        self.assertIsNone(
+            self.view.indexWidget(self.model.indexFromItem(item)))
+
+    def test_previews_on_swap_the_text_for_a_widget(self):
+        """The row becomes a thumbnail plus two labels, so the item's own text has
+        to be cleared or it draws behind the widget."""
+        self.graph.addSourceGroup("srcB")
+        self.mode._previewsEnabled = True
+
+        item = self.row("srcB")
+
+        self.assertEqual(item.text(), "")
+        self.assertIsNotNone(
+            self.view.indexWidget(self.model.indexFromItem(item)))
+
+    def test_the_status_columns_are_enabled_and_selectable(self):
+        items = self.mode.newNodeStatusColumns("srcA")
+        self.assertEqual(len(items), 2)
+        for item in items:
+            self.assertTrue(item.flags() & Qt.ItemIsEnabled)
+            self.assertTrue(item.flags() & Qt.ItemIsSelectable)
+
+    def test_the_status_columns_start_empty(self):
+        self.assertEqual([i.text() for i in self.mode.newNodeStatusColumns("srcA")],
+                         ["", ""])
+
+
+class TestMakeSourceRowWidget(TreeTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA", media="/tmp/shot_010.exr")
+        self.graph.uiNames["srcA"] = "Shot 010"
+        self.graph.viewNode = "srcA"
+
+    def labels(self, widget):
+        return [w.text() for w in widget.findChildren(QtWidgets.QLabel)
+                if w.objectName() in ("sourceNameLabel", "sourceMetaLabel")]
+
+    def test_it_shows_the_ui_name(self):
+        widget = self.mode.makeSourceRowWidget("srcA")
+        self.assertIn("Shot 010", self.labels(widget))
+
+    def test_it_shows_the_media_extension_as_the_subtitle(self):
+        widget = self.mode.makeSourceRowWidget("srcA")
+        self.assertIn("exr", self.labels(widget))
+
+    def test_a_source_with_no_extension_shows_an_em_dash(self):
+        self.graph.seedString("srcA_source.media.movie", ["noextension"])
+        widget = self.mode.makeSourceRowWidget("srcA")
+        self.assertIn("—", self.labels(widget))
+
+    def test_it_carries_a_preview(self):
+        widget = self.mode.makeSourceRowWidget("srcA")
+        previews = widget.findChildren(self.sm.SourcePreviewWidget)
+        self.assertEqual(len(previews), 1)
+
+    def test_the_preview_falls_back_when_no_thumbnail_was_generated(self):
+        widget = self.mode.makeSourceRowWidget("srcA")
+        preview = widget.findChildren(self.sm.SourcePreviewWidget)[0]
+        self.assertFalse(preview._thumbnail.pixmap().isNull())
+
+    def test_a_group_with_no_source_still_builds_a_row(self):
+        """Mid-delete the group can outlive its source; the row must not raise."""
+        self.graph.addNode("empty", "RVSourceGroup")
+        self.graph.uiNames["empty"] = "Empty"
+        widget = self.mode.makeSourceRowWidget("empty")
+        self.assertIn("Empty", self.labels(widget))
+
+
+class TestUpdateNodePreviewEvent(TreeTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA")
+        self.graph.viewNodes = ["srcA"]
+        self.graph.viewNode = "srcA"
+        self.mode._previewsEnabled = True
+        self.mode.iconForNode = lambda node: QtGui.QIcon()
+        self.mode.updateTree()
+
+    def treeWidget(self):
+        item = self.sm.itemOfNode(self.model, "srcA")
+        return self.view.indexWidget(self.model.indexFromItem(item))
+
+    def test_it_replaces_the_row_widget_for_the_source(self):
+        before = self.treeWidget()
+        self.mode.updateNodePreviewEvent(_Event("srcA_source"))
+        self.assertIsNot(self.treeWidget(), before)
+
+    def test_it_does_nothing_with_previews_off(self):
+        self.mode._previewsEnabled = False
+        before = self.treeWidget()
+        self.mode.updateNodePreviewEvent(_Event("srcA_source"))
+        self.assertIs(self.treeWidget(), before)
+
+    def test_an_unknown_source_is_ignored(self):
+        before = self.treeWidget()
+        self.mode.updateNodePreviewEvent(_Event("someOtherSource"))
+        self.assertIs(self.treeWidget(), before)
+
+    def test_it_rejects(self):
+        event = _Event("srcA_source")
+        self.mode.updateNodePreviewEvent(event)
+        self.assertTrue(event.rejected)
+
+
+class TestSubComponentRows(TreeTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA")
+        self.graph.uiNames["srcA"] = "Source A"
+        self.parent = QtGui.QStandardItem("Source A")
+        self.parent.setData("srcA", Qt.UserRole + 2)
+        self.model.invisibleRootItem().appendRow(
+            [self.parent, QtGui.QStandardItem(""), QtGui.QStandardItem("")])
+
+    def sub(self, subType, media="movie.exr", fullName="R", selected=False):
+        return self.mode.newNodeSubComponent(
+            subType, self.parent, media, fullName, "srcA", "", selected)
+
+    def test_a_layer_row_is_labelled_with_its_name(self):
+        self.assertEqual(self.sub(self.sm.LayerSubComponent).text(), "R")
+
+    def test_a_media_row_is_labelled_with_the_basename(self):
+        item = self.sub(self.sm.MediaSubComponent,
+                        media="/a/b/shot.exr", fullName="/a/b/shot.exr")
+        self.assertEqual(item.text(), "shot.exr")
+
+    def test_an_unnamed_component_reads_as_default_in_italics(self):
+        item = self.sub(self.sm.ViewSubComponent, fullName="")
+        self.assertEqual(item.text(), "default")
+        self.assertTrue(item.font().italic())
+
+    def test_the_roles_the_rest_of_the_package_reads_are_set(self):
+        item = self.sub(self.sm.LayerSubComponent)
+        self.assertEqual(self.sm.itemNode(item), "srcA")
+        self.assertEqual(self.sm.itemSubComponentType(item),
+                         self.sm.LayerSubComponent)
+        self.assertEqual(self.sm.itemSubComponentValue(item), "R")
+        self.assertEqual(self.sm.itemSubComponentMedia(item), "movie.exr")
+
+    def test_the_hash_is_stored_on_the_row(self):
+        """componentAndFolderNodeFromHash matches on it to avoid a duplicate node."""
+        item = self.sub(self.sm.LayerSubComponent)
+        self.assertEqual(item.data(Qt.UserRole + 6),
+                         self.sm.hashedSubComponent(item))
+
+    def test_a_selected_component_gets_the_lit_radio_icon(self):
+        selected = self.sub(self.sm.LayerSubComponent, selected=True)
+        unselected = self.sub(self.sm.LayerSubComponent, fullName="G")
+        radioSelected = self.parent.child(selected.row(), 1)
+        radioUnselected = self.parent.child(unselected.row(), 1)
+        self.assertFalse(radioSelected.icon().isNull())
+        self.assertFalse(radioUnselected.icon().isNull())
+        self.assertNotEqual(radioSelected.icon().cacheKey(),
+                            radioUnselected.icon().cacheKey())
+
+    def test_a_media_row_has_no_radio_button(self):
+        """The file heading is not a component you can view on its own."""
+        item = self.sub(self.sm.MediaSubComponent, fullName="shot.exr")
+        self.assertTrue(self.parent.child(item.row(), 1).icon().isNull())
+
+    def test_a_row_is_added_under_the_parent(self):
+        self.sub(self.sm.LayerSubComponent)
+        self.assertEqual(self.parent.rowCount(), 1)
+
+
+class TestSourceFromSubComponent(TreeTest):
+    def setUp(self):
+        super().setUp()
+        self.graph.addSourceGroup("srcA")
+        self.graph.uiNames["srcA"] = "Source A"
+        self.parent = QtGui.QStandardItem("Source A")
+        self.parent.setData("srcA", Qt.UserRole + 2)
+        self.model.invisibleRootItem().appendRow(
+            [self.parent, QtGui.QStandardItem(""), QtGui.QStandardItem("")])
+
+        self.media = self.mode.newNodeSubComponent(
+            self.sm.MediaSubComponent, self.parent, "shot.exr", "shot.exr",
+            "srcA", "", False)
+        self.layer = self.mode.newNodeSubComponent(
+            self.sm.LayerSubComponent, self.media, "shot.exr", "diffuse",
+            "srcA", "", False)
+
+    def test_it_creates_a_source_for_the_component(self):
+        node = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        self.assertTrue(self.graph.nodeExists(node))
+
+    def test_the_new_source_is_named_after_the_component(self):
+        node = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        self.assertEqual(self.graph.uiName(node), "Source A (Layer diffuse)")
+
+    def test_it_is_filed_under_a_components_folder(self):
+        node = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        folders = [n for n in self.graph.nodes
+                   if self.graph.nodeType(n) == "RVFolderGroup"]
+        self.assertEqual(len(folders), 1)
+        self.assertIn(node, self.graph.nodeConnections(folders[0])[0])
+
+    def test_the_folder_is_named_after_the_original(self):
+        self.mode.sourceFromSubComponent(self.layer, "srcA")
+        folder = [n for n in self.graph.nodes
+                  if self.graph.nodeType(n) == "RVFolderGroup"][0]
+        self.assertEqual(self.graph.uiName(folder), "Components of Source A")
+
+    def test_the_new_source_records_where_it_came_from(self):
+        node = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        self.assertEqual(
+            self.graph.getStringProperty(node + ".sm_state.componentOfNode"),
+            ["srcA"])
+        self.assertEqual(
+            self.graph.getStringProperty(node + ".sm_state.componentHash"),
+            [self.sm.hashedSubComponent(self.layer)])
+
+    def test_a_second_component_reuses_the_same_folder(self):
+        self.mode.sourceFromSubComponent(self.layer, "srcA")
+        other = self.mode.newNodeSubComponent(
+            self.sm.LayerSubComponent, self.media, "shot.exr", "specular",
+            "srcA", "", False)
+
+        self.mode.sourceFromSubComponent(other, "srcA")
+
+        folders = [n for n in self.graph.nodes
+                   if self.graph.nodeType(n) == "RVFolderGroup"]
+        self.assertEqual(len(folders), 1)
+
+    def test_both_components_are_filed_under_it(self):
+        first = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        other = self.mode.newNodeSubComponent(
+            self.sm.LayerSubComponent, self.media, "shot.exr", "specular",
+            "srcA", "", False)
+        second = self.mode.sourceFromSubComponent(other, "srcA")
+
+        folder = [n for n in self.graph.nodes
+                  if self.graph.nodeType(n) == "RVFolderGroup"][0]
+        self.assertEqual(self.graph.nodeConnections(folder)[0], [first, second])
+
+    def test_the_same_component_twice_makes_a_second_node(self):
+        """Mu defect, reproduced deliberately: componentAndFolderNodeFromHash finds
+        the existing node and then returns its still-unset `cnode` local instead of
+        it, so the dedup never fires. Clicking a layer's radio button twice adds two
+        sources. Changing that here would be a behavior change, not a port fix."""
+        first = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        second = self.mode.sourceFromSubComponent(self.layer, "srcA")
+        self.assertNotEqual(second, first)
+
+    def test_the_hash_lookup_reports_no_match_even_when_one_exists(self):
+        """The other half of the same defect, stated on its own so that fixing it
+        one day fails one focused test rather than a scatter of them."""
+        self.mode.sourceFromSubComponent(self.layer, "srcA")
+        hash = self.sm.hashedSubComponent(self.layer)
+
+        found, _folder = self.mode.componentAndFolderNodeFromHash(hash, "srcA")
+        self.assertIsNone(found)
+
+    def test_a_matching_hash_returns_early_without_the_folder(self):
+        """The early return skips the rest of the node scan, so the components
+        folder found after it is lost as well."""
+        self.mode.sourceFromSubComponent(self.layer, "srcA")
+        hash = self.sm.hashedSubComponent(self.layer)
+        cnode, folder = self.mode.componentAndFolderNodeFromHash(hash, "srcA")
+        self.assertIsNone(cnode)
+        self.assertIsNone(folder)
+
+    def test_an_unknown_hash_still_finds_the_components_folder(self):
+        self.mode.sourceFromSubComponent(self.layer, "srcA")
+        cnode, folder = self.mode.componentAndFolderNodeFromHash("nope", "srcA")
+        self.assertIsNone(cnode)
+        self.assertIsNotNone(folder)
+
+    def test_nothing_is_found_in_an_untouched_session(self):
+        cnode, folder = self.mode.componentAndFolderNodeFromHash("h", "srcA")
+        self.assertIsNone(cnode)
+        self.assertIsNone(folder)
+
+
+class TestMapOverItem(TreeTest):
+    """mapItems walks the tree; the nested mapOverItem is the recursion itself."""
+
+    def setUp(self):
+        super().setUp()
+        self.root = self.model.invisibleRootItem()
+
+    def row(self, text, node, parent=None):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        (parent or self.root).appendRow(item)
+        return item
+
+    def nodes(self, F=None):
+        return [self.sm.itemNode(i)
+                for i in self.sm.mapItems(self.model, F or (lambda item: True))]
+
+    def test_it_reaches_every_depth(self):
+        a = self.row("A", "a")
+        b = self.row("B", "b", a)
+        self.row("C", "c", b)
+        self.assertEqual(sorted(self.nodes()), ["a", "b", "c"])
+
+    def test_it_returns_children_before_their_parent(self):
+        """Mu conses onto the front of the accumulator, so the deepest row comes
+        first. Callers that delete rows depend on it: removing a parent first
+        invalidates the children still to come."""
+        a = self.row("A", "a")
+        self.row("B", "b", a)
+        self.assertEqual(self.nodes(), ["a", "b"])
+
+    def test_category_rows_are_skipped(self):
+        """A heading carries no node, so it is not a row anything can act on."""
+        heading = QtGui.QStandardItem("SOURCES")
+        heading.setData("", Qt.UserRole + 2)
+        self.root.appendRow(heading)
+        self.row("A", "a", heading)
+        self.assertEqual(self.nodes(), ["a"])
+
+    def test_the_predicate_filters_the_result(self):
+        self.row("A", "a")
+        self.row("B", "b")
+        self.assertEqual(self.nodes(lambda item: self.sm.itemNode(item) == "b"),
+                         ["b"])
+
+    def test_a_filtered_out_parent_is_still_descended_into(self):
+        a = self.row("A", "a")
+        self.row("B", "b", a)
+        self.assertEqual(self.nodes(lambda item: self.sm.itemNode(item) == "b"),
+                         ["b"])
+
+    def test_an_empty_model_maps_to_nothing(self):
+        self.assertEqual(self.nodes(), [])
+
+
+class TestIcons(TreeTest):
+    """The toolbar artwork comes in a light and a dark variant, named `x_48x48.png`
+    and `x_out.png`, and lives in RV's compiled Qt resource bundle. That bundle is
+    not registered outside a running RV, so every `:images/...` load here yields a
+    null QImage and two variants would compare equal no matter which was picked.
+
+    What decides the button's appearance is therefore checked where it is decided:
+    which of the two paths the icon is loaded from.
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.loaded = []
+        realImage = self.sm.QtGui.QImage
+
+        #  Distinct sizes per path: the resources are absent outside RV, so both
+        #  variants would otherwise load as identical null images and the choice
+        #  between them would be unobservable. The size survives into the icon.
+        sizes = {"out": 8, "48x48": 16}
+
+        def recordingImage(path, fmt=""):
+            self.loaded.append(path)
+            side = sizes["out"] if "_out" in path else sizes["48x48"]
+            image = realImage(side, side, realImage.Format_RGB32)
+            image.fill(QtGui.QColor("white"))
+            return image
+
+        self.sm.QtGui.QImage = recordingImage
+        self.addCleanup(setattr, self.sm.QtGui, "QImage", realImage)
+
+    OUTLINE = 8
+    SOLID = 16
+
+    def chosenSide(self, invertSense):
+        icon = self.mode.colorAdjustedIcon(":images/new_48x48.png", invertSense)
+        return icon.availableSizes(QtGui.QIcon.Normal, QtGui.QIcon.Off)[0].width()
+
+    def test_an_aux_icon_is_loaded_from_the_resource_path(self):
+        icon = self.mode.auxIcon("new_48x48.png")
+        self.assertIsInstance(icon, QtGui.QIcon)
+
+    def test_a_plain_aux_icon_does_no_colour_adjustment(self):
+        self.mode.auxIcon("new_48x48.png")
+        self.assertEqual(self.loaded, [])
+
+    def test_a_colour_adjusted_icon_is_also_an_icon(self):
+        icon = self.mode.auxIcon("new_48x48.png", True)
+        self.assertIsInstance(icon, QtGui.QIcon)
+
+    def test_a_light_ui_uses_the_solid_artwork(self):
+        self.mode._darkUI = False
+        self.assertEqual(self.chosenSide(False), self.SOLID)
+
+    def test_a_dark_ui_uses_the_outline_artwork(self):
+        """The solid variant on a dark panel reads as a black smudge."""
+        self.mode._darkUI = True
+        self.assertEqual(self.chosenSide(False), self.OUTLINE)
+
+    def test_inverting_the_sense_swaps_both_ways(self):
+        """Buttons that draw on a contrasting background pass invertSense=True."""
+        self.mode._darkUI = False
+        self.assertEqual(self.chosenSide(True), self.OUTLINE)
+        self.mode._darkUI = True
+        self.assertEqual(self.chosenSide(True), self.SOLID)
+
+    def test_the_selected_state_always_uses_the_solid_artwork(self):
+        """Selection paints its own highlight behind the icon, so the outline
+        variant would vanish into it."""
+        self.mode._darkUI = True
+        icon = self.mode.colorAdjustedIcon(":images/new_48x48.png", False)
+        selected = icon.availableSizes(QtGui.QIcon.Selected, QtGui.QIcon.Off)
+        self.assertEqual(selected[0].width(), self.SOLID)
+
+    def test_both_variants_are_loaded_so_the_selected_state_can_use_the_other(self):
+        self.mode.colorAdjustedIcon(":images/new_48x48.png", False)
+        self.assertEqual(self.loaded,
+                         [":images/new_out.png", ":images/new_48x48.png"])
+
+    def test_the_aux_icon_path_goes_through_the_same_adjustment(self):
+        self.mode.auxIcon("new_48x48.png", True)
+        self.assertEqual(self.loaded,
+                         [":images/new_out.png", ":images/new_48x48.png"])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_node_model.py b/src/test/golden/session_manager/unit/test_node_model.py
new file mode 100644
index 000000000..afd7a8e06
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_node_model.py
@@ -0,0 +1,111 @@
+"""Gate 5 — NodeModel's drag mime encoding on the port itself.
+
+mimeData() is what makes a tree row droppable onto another RV window or an external
+app, and it is the one piece of the drag path with an observable payload, so it is
+tested by reading the QMimeData the real model produces.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class NodeModelTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.model = self.sm.NodeModel(None)
+
+    def _row(self, text, node):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        self.model.appendRow([item])
+        return item
+
+
+class TestMimeTypes(NodeModelTest):
+    def test_adds_uri_list_and_plain_text(self):
+        types = self.model.mimeTypes()
+        self.assertIn("text/uri-list", types)
+        self.assertIn("text/plain", types)
+
+    def test_keeps_the_base_class_types(self):
+        base = QtGui.QStandardItemModel().mimeTypes()
+        types = self.model.mimeTypes()
+        for t in base:
+            self.assertIn(t, types)
+
+
+class TestMimeData(NodeModelTest):
+    def test_source_group_encodes_one_url_per_media(self):
+        self.graph.addNode("sourceGroup000000", "RVSourceGroup")
+        self.graph.seedString(
+            "sourceGroup000000_source.media.movie", ["a.mov", "b.mov"])
+        item = self._row("Src", "sourceGroup000000")
+
+        data = self.model.mimeData([self.model.indexFromItem(item)])
+        urls = [u.toString() for u in data.urls()]
+
+        self.assertEqual(len(urls), 2)
+        for url in urls:
+            self.assertTrue(url.startswith("rvnode://"))
+        self.assertTrue(any(u.endswith("a.mov") for u in urls))
+        self.assertTrue(any(u.endswith("b.mov") for u in urls))
+        self.assertIn("RVFileSource", data.text())
+        self.assertIn("media.movie", data.text())
+
+    def test_non_source_node_encodes_type_and_name_only(self):
+        self.graph.addNode("sequenceGroup", "RVSequenceGroup")
+        item = self._row("Seq", "sequenceGroup")
+
+        data = self.model.mimeData([self.model.indexFromItem(item)])
+        urls = [u.toString() for u in data.urls()]
+
+        self.assertEqual(len(urls), 1)
+        self.assertIn("RVSequenceGroup", urls[0])
+        self.assertIn("sequenceGroup", urls[0])
+        self.assertEqual(data.text(), "RVSequenceGroup sequenceGroup\n")
+
+    def test_multiple_indices_accumulate(self):
+        self.graph.addNode("seqA", "RVSequenceGroup")
+        self.graph.addNode("seqB", "RVStackGroup")
+        a = self._row("A", "seqA")
+        b = self._row("B", "seqB")
+
+        data = self.model.mimeData(
+            [self.model.indexFromItem(a), self.model.indexFromItem(b)]
+        )
+
+        self.assertEqual(len(data.urls()), 2)
+        self.assertIn("seqA", data.text())
+        self.assertIn("seqB", data.text())
+
+    def test_missing_media_property_does_not_lose_the_mime_object(self):
+        """A source group with no media property must not abort the whole drag.
+
+        mimeData() catches and reports; the caller still needs a usable QMimeData.
+        """
+        self.graph.addNode("sourceGroup000001", "RVSourceGroup")
+        item = self._row("Src", "sourceGroup000001")
+
+        data = self.model.mimeData([self.model.indexFromItem(item)])
+        self.assertIsNotNone(data)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_node_ops.py b/src/test/golden/session_manager/unit/test_node_ops.py
new file mode 100644
index 000000000..ad4f6aa5d
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_node_ops.py
@@ -0,0 +1,91 @@
+"""Gate 5 — setInputs / removeInput / hasInput / addInput on the port itself.
+
+These four wrap RV's node-connection API and share one rule the tests pin: a
+rejected input set must leave the graph untouched and surface an alert rather than
+silently half-applying.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class NodeOpTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.graph.addNode("a", "RVSourceGroup")
+        self.graph.addNode("b", "RVSourceGroup")
+        self.graph.addNode("c", "RVSourceGroup")
+        self.graph.addNode("seq", "RVSequenceGroup", inputs=["a", "b"])
+
+
+class TestSetInputs(NodeOpTest):
+    def test_accepted_inputs_are_written(self):
+        self.assertTrue(self.sm.setInputs("seq", ["b", "a"]))
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["b", "a"])
+        self.assertEqual(self.graph.alerts, [])
+
+    def test_rejected_inputs_alert_and_change_nothing(self):
+        self.assertFalse(self.sm.setInputs("seq", ["a", "nonexistent"]))
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["a", "b"])
+        self.assertEqual(len(self.graph.alerts), 1)
+
+    def test_empty_input_list_is_allowed(self):
+        self.assertTrue(self.sm.setInputs("seq", []))
+        self.assertEqual(self.graph.nodeConnections("seq")[0], [])
+
+
+class TestRemoveInput(NodeOpTest):
+    def test_removes_the_named_input(self):
+        self.assertTrue(self.sm.removeInput("seq", "a"))
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["b"])
+
+    def test_removing_an_absent_input_leaves_the_list_alone(self):
+        self.assertTrue(self.sm.removeInput("seq", "zzz"))
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["a", "b"])
+
+    def test_removes_every_occurrence(self):
+        self.graph.setNodeInputs("seq", ["a", "b", "a"])
+        self.sm.removeInput("seq", "a")
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["b"])
+
+    def test_empty_node_name_is_a_noop(self):
+        self.assertTrue(self.sm.removeInput("", "a"))
+
+
+class TestHasInput(NodeOpTest):
+    def test_present_and_absent(self):
+        self.assertTrue(self.sm.hasInput("seq", "a"))
+        self.assertFalse(self.sm.hasInput("seq", "c"))
+
+    def test_absent_node_reports_true(self):
+        """Mu returns true for a nil/empty node so callers skip the add entirely."""
+        self.assertTrue(self.sm.hasInput(None, "a"))
+        self.assertTrue(self.sm.hasInput("", "a"))
+
+
+class TestAddInput(NodeOpTest):
+    def test_appends_at_the_end(self):
+        self.assertTrue(self.sm.addInput("seq", "c"))
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["a", "b", "c"])
+
+    def test_adding_a_duplicate_appends_again(self):
+        """addInput does not dedupe; callers guard with hasInput()."""
+        self.sm.addInput("seq", "a")
+        self.assertEqual(self.graph.nodeConnections("seq")[0], ["a", "b", "a"])
+
+    def test_nonexistent_target_node_is_a_noop(self):
+        self.assertTrue(self.sm.addInput("noSuchNode", "a"))
+        self.assertEqual(self.graph.alerts, [])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_preview_widgets.py b/src/test/golden/session_manager/unit/test_preview_widgets.py
new file mode 100644
index 000000000..4afd2405c
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_preview_widgets.py
@@ -0,0 +1,237 @@
+"""Gate 5 — ThumbnailWidget / FilmstripWidget / SourcePreviewWidget on the port.
+
+COVERAGE.md drops the hover and scrub behavior from the golden inventory because it
+is pointer-position dependent, which makes these the tests that actually pin it. They
+build the real widgets and feed them real images, so the frame arithmetic in
+showFrameAtX is checked against pixels rather than described.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+def _stripFile(tmpdir, frames, height=45, frameWidth=240, colors=None):
+    """A filmstrip PNG: `frames` frames side by side, each a distinct flat color."""
+    image = QtGui.QImage(frameWidth * frames, height, QtGui.QImage.Format_RGB32)
+    for f in range(frames):
+        color = (colors or [])[f] if colors else QtGui.QColor(f * 40 % 256, 0, 0)
+        for x in range(f * frameWidth, (f + 1) * frameWidth):
+            for y in range(height):
+                image.setPixelColor(x, y, color)
+    path = str(tmpdir / ("strip_%d.png" % frames))
+    image.save(path, "PNG")
+    return path
+
+
+class WidgetTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        import tempfile
+        import pathlib
+
+        self._tmp = tempfile.TemporaryDirectory()
+        self.tmpdir = pathlib.Path(self._tmp.name)
+
+    def tearDown(self):
+        self._tmp.cleanup()
+
+
+class TestThumbnailWidget(WidgetTest):
+    def test_init_scales_contents(self):
+        w = self.sm.ThumbnailWidget(None)
+        self.assertTrue(w.hasScaledContents())
+
+    def test_set_fallback_installs_the_pixmap(self):
+        w = self.sm.ThumbnailWidget(None)
+        pixmap = QtGui.QPixmap(10, 10)
+        pixmap.fill(QtGui.QColor("red"))
+        w.setFallback(pixmap)
+        self.assertFalse(w.pixmap().isNull())
+
+    def test_load_replaces_the_pixmap(self):
+        path = _stripFile(self.tmpdir, 1)
+        w = self.sm.ThumbnailWidget(None)
+        w.load(path)
+        self.assertFalse(w.pixmap().isNull())
+
+    def test_load_of_a_missing_file_keeps_the_fallback(self):
+        """I9: the fallback must survive a thumbnail that has not been generated."""
+        w = self.sm.ThumbnailWidget(None)
+        fallback = QtGui.QPixmap(8, 8)
+        fallback.fill(QtGui.QColor("blue"))
+        w.setFallback(fallback)
+
+        w.load(str(self.tmpdir / "does_not_exist.png"))
+
+        self.assertEqual(w.pixmap().size(), fallback.size())
+
+
+class TestFilmstripWidget(WidgetTest):
+    def test_init_state(self):
+        w = self.sm.FilmstripWidget(None)
+        self.assertFalse(w.isLoaded())
+        self.assertTrue(w.hasScaledContents())
+        self.assertTrue(w.hasMouseTracking())
+        self.assertEqual(w._frameWidth, self.sm.FILMSTRIP_FRAME_WIDTH)
+
+    def test_load_sets_loaded(self):
+        w = self.sm.FilmstripWidget(None)
+        w.load(_stripFile(self.tmpdir, 3))
+        self.assertTrue(w.isLoaded())
+
+    def test_load_of_a_missing_file_leaves_it_unloaded(self):
+        w = self.sm.FilmstripWidget(None)
+        w.load(str(self.tmpdir / "nope.png"))
+        self.assertFalse(w.isLoaded())
+
+    def test_show_frame_before_load_is_a_noop(self):
+        w = self.sm.FilmstripWidget(None)
+        w.resize(240, 45)
+        w.showFrameAtX(10)
+        self.assertTrue(w.pixmap().isNull(),
+                        "scrubbing an unloaded filmstrip must not set a pixmap")
+
+    def test_frame_width_is_one_frame_wide(self):
+        w = self.sm.FilmstripWidget(None)
+        w.load(_stripFile(self.tmpdir, 4))
+        w.resize(self.sm.FILMSTRIP_FRAME_WIDTH, 45)
+        w.showFrameAtX(0)
+        self.assertEqual(w.pixmap().width(), self.sm.FILMSTRIP_FRAME_WIDTH)
+
+    def test_left_edge_selects_the_first_frame(self):
+        colors = [QtGui.QColor("red"), QtGui.QColor("green"),
+                  QtGui.QColor("blue"), QtGui.QColor("white")]
+        w = self.sm.FilmstripWidget(None)
+        w.load(_stripFile(self.tmpdir, 4, colors=colors))
+        w.resize(400, 45)
+
+        w.showFrameAtX(0)
+        got = w.pixmap().toImage().pixelColor(5, 5)
+        self.assertEqual(got.red(), 255)
+        self.assertEqual(got.green(), 0)
+
+    def test_beyond_the_right_edge_clamps_to_the_last_frame(self):
+        colors = [QtGui.QColor("red"), QtGui.QColor("green"),
+                  QtGui.QColor("blue"), QtGui.QColor("white")]
+        w = self.sm.FilmstripWidget(None)
+        w.load(_stripFile(self.tmpdir, 4, colors=colors))
+        w.resize(400, 45)
+
+        w.showFrameAtX(100000)
+        got = w.pixmap().toImage().pixelColor(5, 5)
+        self.assertEqual((got.red(), got.green(), got.blue()), (255, 255, 255),
+                         "past the end must clamp to the final frame, not wrap")
+
+    def test_negative_x_clamps_to_the_first_frame(self):
+        colors = [QtGui.QColor("red"), QtGui.QColor("green")]
+        w = self.sm.FilmstripWidget(None)
+        w.load(_stripFile(self.tmpdir, 2, colors=colors))
+        w.resize(400, 45)
+
+        w.showFrameAtX(-500)
+        got = w.pixmap().toImage().pixelColor(5, 5)
+        self.assertEqual((got.red(), got.green()), (255, 0))
+
+    def test_mouse_move_scrubs_to_the_event_position(self):
+        colors = [QtGui.QColor("red"), QtGui.QColor("white")]
+        w = self.sm.FilmstripWidget(None)
+        w.load(_stripFile(self.tmpdir, 2, colors=colors))
+        w.resize(400, 45)
+
+        event = QtGui.QMouseEvent(
+            QtCore.QEvent.MouseMove,
+            QtCore.QPointF(399, 10),
+            QtCore.QPointF(399, 10),
+            Qt.NoButton, Qt.NoButton, Qt.NoModifier,
+        )
+        w.mouseMoveEvent(event)
+
+        got = w.pixmap().toImage().pixelColor(5, 5)
+        self.assertEqual((got.red(), got.green(), got.blue()), (255, 255, 255))
+
+
+class TestSourcePreviewWidget(WidgetTest):
+    def test_init_shows_thumbnail_and_hides_filmstrip(self):
+        w = self.sm.SourcePreviewWidget(None)
+        self.assertFalse(w._thumbnail.isHidden())
+        self.assertTrue(w._filmstrip.isHidden())
+
+    def test_hover_attribute_is_set(self):
+        w = self.sm.SourcePreviewWidget(None)
+        self.assertTrue(w.testAttribute(Qt.WA_Hover))
+
+    def test_hover_enter_without_a_strip_keeps_the_thumbnail(self):
+        w = self.sm.SourcePreviewWidget(None)
+        w.event(QtCore.QEvent(QtCore.QEvent.HoverEnter))
+        self.assertFalse(w._thumbnail.isHidden())
+        self.assertTrue(w._filmstrip.isHidden())
+
+    def test_hover_enter_with_a_strip_swaps_to_the_filmstrip(self):
+        w = self.sm.SourcePreviewWidget(None)
+        w.show()
+        w.loadStrip(_stripFile(self.tmpdir, 3))
+
+        w.event(QtCore.QEvent(QtCore.QEvent.HoverEnter))
+
+        self.assertFalse(w._filmstrip.isHidden())
+        self.assertTrue(w._thumbnail.isHidden())
+
+    def test_hover_leave_swaps_back(self):
+        w = self.sm.SourcePreviewWidget(None)
+        w.show()
+        w.loadStrip(_stripFile(self.tmpdir, 3))
+        w.event(QtCore.QEvent(QtCore.QEvent.HoverEnter))
+
+        w.event(QtCore.QEvent(QtCore.QEvent.HoverLeave))
+
+        self.assertTrue(w._filmstrip.isHidden())
+        self.assertFalse(w._thumbnail.isHidden())
+
+    def test_hover_events_are_handled_by_the_override_not_the_base_class(self):
+        """QWidget.event() also returns True for hover, so returning True proves
+        nothing on its own. What distinguishes the override is the side effect: it
+        swaps the two child widgets. Checked here by confirming an unrelated event
+        type leaves them alone while a hover does not.
+        """
+        w = self.sm.SourcePreviewWidget(None)
+        w.show()
+        w.loadStrip(_stripFile(self.tmpdir, 3))
+
+        w.event(QtCore.QEvent(QtCore.QEvent.None_))
+        self.assertTrue(w._filmstrip.isHidden(), "a non-hover event must not swap")
+
+        w.event(QtCore.QEvent(QtCore.QEvent.HoverEnter))
+        self.assertFalse(w._filmstrip.isHidden(), "HoverEnter must reach the override")
+
+    def test_set_fallback_reaches_the_thumbnail(self):
+        w = self.sm.SourcePreviewWidget(None)
+        pixmap = QtGui.QPixmap(6, 6)
+        pixmap.fill(QtGui.QColor("red"))
+        w.setFallback(pixmap)
+        self.assertFalse(w._thumbnail.pixmap().isNull())
+
+    def test_load_thumbnail_reaches_the_thumbnail(self):
+        w = self.sm.SourcePreviewWidget(None)
+        w.loadThumbnail(_stripFile(self.tmpdir, 1))
+        self.assertFalse(w._thumbnail.pixmap().isNull())
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_rename.py b/src/test/golden/session_manager/unit/test_rename.py
new file mode 100644
index 000000000..d2a866d3a
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_rename.py
@@ -0,0 +1,92 @@
+"""Gate 5 — SessionManagerMode.renameByType on the port itself.
+
+This is the name a user sees on every node the Add and Folder menus create, and it is
+one of the few places the Mu source builds a string by hand with branch-dependent
+punctuation, so each arm is pinned separately. The method is called on a mode built
+with object.__new__: renameByType touches no widget state, only nodeType() and the
+uiName commands, so constructing the full dock would add nothing but a dependency on
+a live RV.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class RenameTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+
+    def rename(self, nodeType, inputs, uiNames=None):
+        self.graph.addNode("target", nodeType)
+        for name in inputs:
+            self.graph.addNode(name, "RVSourceGroup")
+        if uiNames:
+            self.graph.uiNames.update(uiNames)
+        self.mode.renameByType("target", inputs)
+        return self.graph.uiName("target")
+
+
+class TestRenameByType(RenameTest):
+    def test_empty_sequence(self):
+        self.assertEqual(self.rename("RVSequenceGroup", []), "Empty Sequence")
+
+    def test_empty_stack(self):
+        self.assertEqual(self.rename("RVStackGroup", []), "Empty Stack")
+
+    def test_empty_folder(self):
+        self.assertEqual(self.rename("RVFolderGroup", []), "Empty Folder")
+
+    def test_rv_prefix_and_group_suffix_are_both_stripped(self):
+        self.assertEqual(self.rename("RVSwitchGroup", []), "Empty Switch")
+
+    def test_type_without_group_suffix_keeps_the_rest(self):
+        self.assertEqual(self.rename("RVStack", []), "Empty Stack")
+
+    def test_type_without_rv_prefix_is_left_alone(self):
+        self.assertEqual(self.rename("CustomGroup", []), "Empty Custom")
+
+    def test_one_input(self):
+        self.assertEqual(
+            self.rename("RVSequenceGroup", ["a"], {"a": "SrcA"}),
+            "Sequence of SrcA",
+        )
+
+    def test_two_inputs_are_joined_with_and(self):
+        self.assertEqual(
+            self.rename("RVSequenceGroup", ["a", "b"], {"a": "SrcA", "b": "SrcB"}),
+            "Sequence of SrcA and SrcB",
+        )
+
+    def test_three_or_more_inputs_are_counted(self):
+        """Note the trailing space; it is in the Mu format string and is kept."""
+        self.assertEqual(
+            self.rename("RVStackGroup", ["a", "b", "c"]),
+            "Stack of 3 views ",
+        )
+
+    def test_many_inputs_use_the_count_form(self):
+        self.assertEqual(
+            self.rename("RVLayoutGroup", ["a", "b", "c", "d", "e"]),
+            "Layout of 5 views ",
+        )
+
+    def test_uses_ui_names_not_node_names(self):
+        got = self.rename(
+            "RVSequenceGroup", ["nodeA", "nodeB"],
+            {"nodeA": "Renamed A", "nodeB": "Renamed B"},
+        )
+        self.assertEqual(got, "Sequence of Renamed A and Renamed B")
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_retime_group_edit_mode.py b/src/test/golden/session_manager/unit/test_retime_group_edit_mode.py
new file mode 100644
index 000000000..0a55868e7
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_retime_group_edit_mode.py
@@ -0,0 +1,173 @@
+"""Gate 5 — RetimeGroup_edit_mode on the port itself.
+
+The interesting case is reverse(): Mu writes the audio offset with the int overload
+against what is normally a float property, and RV's setIntProperty throws
+badPropertyType in that situation. That throw is Mu behavior, so the port has to
+reproduce it rather than quietly normalise the types — the tests below pin which
+writes land before it, and that an int-typed property makes the same call complete.
+
+Methods are called on an instance built with object.__new__: reset(), reverse() and
+setFactorValue() touch only properties and commands, never the .ui tree, so building
+the editor panel would add a dependency on a live RV without testing anything more.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class RetimeTest(unittest.TestCase):
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("RetimeGroup_edit_mode")
+        self.mode = self.mod.RetimeGroupEditMode.__new__(self.mod.RetimeGroupEditMode)
+        self.mode._ui = None
+
+        self.graph.addNode("retimeGroup", "RVRetimeGroup")
+        self.graph.addNode("retime", "RVRetime", group="retimeGroup")
+        self.graph.viewNode = "retimeGroup"
+
+    def floats(self, name):
+        return self.graph.getFloatProperty(name)
+
+    def ints(self, name):
+        return self.graph.getIntProperty(name)
+
+    def seedFloats(self, visualScale=1.0):
+        for name, value in (
+            ("retime.visual.scale", visualScale),
+            ("retime.visual.offset", 0.0),
+            ("retime.audio.scale", 1.0),
+            ("retime.audio.offset", 0.0),
+        ):
+            self.graph.seedFloat(name, [value])
+
+
+class TestReset(RetimeTest):
+    def test_restores_identity_timing(self):
+        self.seedFloats(visualScale=-1.0)
+        self.graph.seedFloat("retime.visual.offset", [-42.0])
+
+        self.mode.reset()
+
+        self.assertEqual(self.floats("retime.visual.scale"), [1.0])
+        self.assertEqual(self.floats("retime.visual.offset"), [0.0])
+        self.assertEqual(self.floats("retime.audio.scale"), [1.0])
+        self.assertEqual(self.floats("retime.audio.offset"), [0.0])
+
+    def test_writes_all_four_as_floats(self):
+        self.mode.reset()
+        for name in ("visual.scale", "visual.offset", "audio.scale", "audio.offset"):
+            self.assertEqual(self.graph.props["retime." + name][0], self.graph.FLOAT)
+
+    def test_redraws(self):
+        before = self.graph.redraws
+        self.mode.reset()
+        self.assertEqual(self.graph.redraws, before + 1)
+
+
+class TestReverse(RetimeTest):
+    def test_forward_to_reverse_sets_negative_scale_then_throws(self):
+        """The int write against a float audio.offset aborts the rest of reverse()."""
+        self.seedFloats(visualScale=1.0)
+
+        with self.assertRaises(Exception):
+            self.mode.reverse()
+
+        self.assertEqual(self.floats("retime.visual.scale"), [-1.0])
+        self.assertEqual(self.floats("retime.visual.offset"), [float(-(100 - 1))])
+        self.assertEqual(self.floats("retime.audio.scale"), [1.0])
+
+    def test_reverse_to_forward_throws_on_the_first_int_write(self):
+        self.seedFloats(visualScale=-1.0)
+
+        with self.assertRaises(Exception):
+            self.mode.reverse()
+
+        # visual.scale is restored before the int write aborts the rest.
+        self.assertEqual(self.floats("retime.visual.scale"), [1.0])
+
+    def test_offset_uses_the_frame_range_length(self):
+        self.seedFloats(visualScale=1.0)
+        self.graph.props["retime.audio.offset"] = (self.graph.INT, [0])
+
+        self.mode.reverse()
+
+        self.assertEqual(self.floats("retime.visual.offset"), [float(-(100 - 1))])
+
+    def test_int_typed_offset_makes_reverse_complete(self):
+        """Same code path, no exception — the throw comes from the property's type.
+
+        This distinguishes "the port picked the wrong overload" from "Mu's overload
+        choice collides with an existing float property", which is the real story.
+        """
+        self.seedFloats(visualScale=1.0)
+        self.graph.props["retime.audio.offset"] = (self.graph.INT, [0])
+
+        self.mode.reverse()
+
+        self.assertEqual(self.floats("retime.visual.scale"), [-1.0])
+        self.assertEqual(self.ints("retime.audio.offset"), [0])
+
+    def test_visual_offset_is_a_float_write_on_the_forward_branch(self):
+        self.seedFloats(visualScale=1.0)
+        self.graph.props["retime.audio.offset"] = (self.graph.INT, [0])
+
+        self.mode.reverse()
+
+        self.assertEqual(self.graph.props["retime.visual.offset"][0], self.graph.FLOAT)
+
+    def test_visual_offset_is_an_int_write_on_the_reverse_branch(self):
+        """Mu's set(..., 0) on this branch is the int overload, unlike the other."""
+        self.seedFloats(visualScale=-1.0)
+        self.graph.props["retime.visual.offset"] = (self.graph.INT, [0])
+        self.graph.props["retime.audio.offset"] = (self.graph.INT, [0])
+
+        self.mode.reverse()
+
+        self.assertEqual(self.ints("retime.visual.offset"), [0])
+
+
+class TestSetFactorValue(RetimeTest):
+    def test_plain_factor(self):
+        self.seedFloats()
+        self.mode.setFactorValue("2", False)
+        self.assertEqual(self.floats("retime.visual.scale"), [2.0])
+
+    def test_inverted_factor(self):
+        self.seedFloats()
+        self.mode.setFactorValue("4", True)
+        self.assertEqual(self.floats("retime.visual.scale"), [0.25])
+
+    def test_fractional_input(self):
+        self.seedFloats()
+        self.mode.setFactorValue("0.5", False)
+        self.assertEqual(self.floats("retime.visual.scale"), [0.5])
+
+
+class TestSetConvertFPS(RetimeTest):
+    def test_writes_output_fps(self):
+        self.graph.seedFloat("retime.output.fps", [24.0])
+        self.mode.setConvertFPS("48")
+        self.assertEqual(self.floats("retime.output.fps"), [48.0])
+
+    def test_accepts_non_integer_rates(self):
+        self.graph.seedFloat("retime.output.fps", [24.0])
+        self.mode.setConvertFPS("23.98")
+        self.assertEqual(self.floats("retime.output.fps"), [23.98])
+
+
+class TestUpdateUIWithoutPanel(RetimeTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_sequence_group_edit_mode.py b/src/test/golden/session_manager/unit/test_sequence_group_edit_mode.py
new file mode 100644
index 000000000..68f35b9a7
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_sequence_group_edit_mode.py
@@ -0,0 +1,135 @@
+"""Gate 5 — SequenceGroup_edit_mode on the port itself."""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class SequenceTest(unittest.TestCase):
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("SequenceGroup_edit_mode")
+        self.mode = self.mod.SequenceGroupEditMode.__new__(
+            self.mod.SequenceGroupEditMode
+        )
+        self.mode._ui = None
+        self.mode._disableUpdates = False
+
+        self.graph.addNode("sequenceGroup", "RVSequenceGroup")
+        self.graph.addNode("sequence", "RVSequence", group="sequenceGroup")
+        self.graph.viewNode = "sequenceGroup"
+
+
+class TestCheckBoxSlot(SequenceTest):
+    PROP = "sequence.mode.autoEDL"
+
+    def test_checked_writes_one(self):
+        self.graph.seedInt(self.PROP, [0])
+        self.mode.checkBoxSlot(2, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+    def test_unchecked_writes_zero(self):
+        self.graph.seedInt(self.PROP, [1])
+        self.mode.checkBoxSlot(0, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [0])
+
+    def test_enum_argument(self):
+        self.graph.seedInt(self.PROP, [0])
+        self.mode.checkBoxSlot(Qt.Checked, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+    def test_no_write_when_unchanged(self):
+        self.graph.seedInt(self.PROP, [1])
+        before = dict(self.graph.props)
+        self.mode.checkBoxSlot(2, self.PROP)
+        self.assertEqual(self.graph.props, before)
+
+    def test_through_a_real_checkbox(self):
+        self.graph.seedInt(self.PROP, [0])
+        box = QtWidgets.QCheckBox()
+        box.stateChanged.connect(lambda s: self.mode.checkBoxSlot(s, self.PROP))
+        box.setCheckState(Qt.Checked)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+
+class TestFpsChanged(SequenceTest):
+    PROP = "sequence.output.fps"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.seedFloat(self.PROP, [24.0])
+        self.mode._outputFPSEdit = QtWidgets.QLineEdit()
+
+    def test_writes_a_new_rate(self):
+        self.mode._outputFPSEdit.setText("48")
+        self.mode.fpsChanged()
+        self.assertEqual(self.graph.getFloatProperty(self.PROP), [48.0])
+
+    def test_same_rate_does_not_redraw(self):
+        self.mode._outputFPSEdit.setText("24")
+        before = self.graph.redraws
+        self.mode.fpsChanged()
+        self.assertEqual(self.graph.redraws, before)
+
+
+class TestSizeEdits(SequenceTest):
+    PROP = "sequence.output.size"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.seedInt(self.PROP, [1920, 1080])
+        self.mode._outputWidthEdit = QtWidgets.QLineEdit()
+        self.mode._outputHeightEdit = QtWidgets.QLineEdit()
+
+    def test_width_keeps_height(self):
+        self.mode._outputWidthEdit.setText("1280")
+        self.mode.widthChanged()
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1280, 1080])
+
+    def test_height_keeps_width(self):
+        self.mode._outputHeightEdit.setText("720")
+        self.mode.heightChanged()
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1920, 720])
+
+
+class TestSessionReadFreeze(SequenceTest):
+    class _Event:
+        def reject(self):
+            pass
+
+    def test_before_read_disables_updates(self):
+        self.mode.beforeSessionRead(self._Event())
+        self.assertTrue(self.mode._disableUpdates)
+
+    def test_after_read_re_enables_updates(self):
+        self.mode.beforeSessionRead(self._Event())
+        self.mode.afterSessionRead(self._Event())
+        self.assertFalse(self.mode._disableUpdates)
+
+    # The real suppression test needs a loaded panel to observe anything, so it
+    # lives in test_editor_ui_updates.py::TestSequenceUpdateUI. A version here with
+    # _ui still None could not fail: updateUI() returns early on either flag.
+
+
+class TestUpdateUIWithoutPanel(SequenceTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_sort_inputs.py b/src/test/golden/session_manager/unit/test_sort_inputs.py
new file mode 100644
index 000000000..0fa545507
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_sort_inputs.py
@@ -0,0 +1,110 @@
+"""Gate 5 — SessionManagerMode.sortInputs on the port itself.
+
+Mu sorts with a hand-written insertion pass rather than a library sort, and the
+inputs panel order it produces is a primary outcome (#7). The method is driven on an
+instance built with object.__new__ with the two collaborators it actually reaches
+stubbed, so what is under test is the ordering and the folder sort-key writeback.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class SortTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.mode = self.sm.SessionManagerMode.__new__(self.sm.SessionManagerMode)
+        self.mode._inputOrderLock = False
+        self.mode.updateInputs = lambda node: None
+        self.treeUpdates = []
+        self.mode.updateTree = lambda: self.treeUpdates.append(1)
+
+    def makeParent(self, nodeType, inputs, uiNames=None):
+        for n in inputs:
+            self.graph.addNode(n, "RVSourceGroup")
+        self.graph.addNode("parent", nodeType, inputs=inputs)
+        self.graph.viewNode = "parent"
+        if uiNames:
+            self.graph.uiNames.update(uiNames)
+
+    def order(self):
+        return self.graph.nodeConnections("parent")[0]
+
+
+class TestSortInputs(SortTest):
+    def test_ascending(self):
+        self.makeParent("RVSequenceGroup", ["c", "a", "b"],
+                        {"a": "Apple", "b": "Banana", "c": "Cherry"})
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.order(), ["a", "b", "c"])
+
+    def test_descending(self):
+        self.makeParent("RVSequenceGroup", ["a", "c", "b"],
+                        {"a": "Apple", "b": "Banana", "c": "Cherry"})
+        self.mode.sortInputs(False, False)
+        self.assertEqual(self.order(), ["c", "b", "a"])
+
+    def test_already_sorted_is_stable(self):
+        self.makeParent("RVSequenceGroup", ["a", "b", "c"],
+                        {"a": "Apple", "b": "Banana", "c": "Cherry"})
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.order(), ["a", "b", "c"])
+
+    def test_single_input(self):
+        self.makeParent("RVSequenceGroup", ["a"], {"a": "Apple"})
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.order(), ["a"])
+
+    def test_empty_inputs(self):
+        self.makeParent("RVSequenceGroup", [])
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.order(), [])
+
+    def test_sorts_on_ui_name_not_node_name(self):
+        self.makeParent("RVSequenceGroup", ["n1", "n2"],
+                        {"n1": "Zebra", "n2": "Antelope"})
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.order(), ["n2", "n1"])
+
+    def test_lock_suppresses_the_sort(self):
+        self.makeParent("RVSequenceGroup", ["c", "a"],
+                        {"a": "Apple", "c": "Cherry"})
+        self.mode._inputOrderLock = True
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.order(), ["c", "a"])
+
+
+class TestSortInputsOnAFolder(SortTest):
+    def test_folder_sort_records_sort_keys(self):
+        self.makeParent("RVFolderGroup", ["c", "a", "b"],
+                        {"a": "Apple", "b": "Banana", "c": "Cherry"})
+        self.mode.sortInputs(True, False)
+
+        self.assertEqual(self.sm.sortKeyInParent("a", "parent"), 0)
+        self.assertEqual(self.sm.sortKeyInParent("b", "parent"), 1)
+        self.assertEqual(self.sm.sortKeyInParent("c", "parent"), 2)
+
+    def test_folder_sort_refreshes_the_tree(self):
+        self.makeParent("RVFolderGroup", ["b", "a"], {"a": "Apple", "b": "Banana"})
+        self.mode.sortInputs(True, False)
+        self.assertEqual(len(self.treeUpdates), 1)
+
+    def test_non_folder_sort_does_not_touch_sort_keys(self):
+        self.makeParent("RVSequenceGroup", ["b", "a"], {"a": "Apple", "b": "Banana"})
+        self.mode.sortInputs(True, False)
+        self.assertEqual(self.sm.sortKeyInParent("a", "parent"),
+                         self.sm.UNDEFINED_SORT_KEY)
+        self.assertEqual(self.treeUpdates, [])
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_source_group_edit_mode.py b/src/test/golden/session_manager/unit/test_source_group_edit_mode.py
new file mode 100644
index 000000000..9b48ebad0
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_source_group_edit_mode.py
@@ -0,0 +1,172 @@
+"""Gate 5 — SourceGroup_edit_mode on the port itself.
+
+Cut in/out is stored as int properties whose "unset" value is Mu's int.max sentinel,
+so the tests check both the sentinel round-trip and the prompt text that reads it —
+the prompt is the only place a user sees whether a cut is set.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class SourceGroupTest(unittest.TestCase):
+    IN = "source.cut.in"
+    OUT = "source.cut.out"
+    SYNC = "source.cut.syncGui"
+
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("SourceGroup_edit_mode")
+        self.mode = self.mod.SourceGroupEditMode.__new__(self.mod.SourceGroupEditMode)
+        self.mode._ui = None
+        self.mode._locked = False
+
+        self.graph.addNode("sourceGroup", "RVSourceGroup")
+        self.graph.addNode("source", "RVFileSource", group="sourceGroup")
+        self.graph.viewNode = "sourceGroup"
+        self.graph.seedInt(self.IN, [-self.mod.MU_INT_MAX])
+        self.graph.seedInt(self.OUT, [self.mod.MU_INT_MAX])
+
+    def ints(self, name):
+        return self.graph.getIntProperty(name)
+
+
+class TestMuIntMax(SourceGroupTest):
+    def test_sentinel_matches_mu(self):
+        self.assertEqual(self.mod.MU_INT_MAX, 2 ** 31 - 1)
+
+
+class TestSetCutValue(SourceGroupTest):
+    def test_sets_in_point(self):
+        self.mode.setCutValue("in", "12")
+        self.assertEqual(self.ints(self.IN), [12])
+
+    def test_sets_out_point(self):
+        self.mode.setCutValue("out", "34")
+        self.assertEqual(self.ints(self.OUT), [34])
+
+    def test_negative_value(self):
+        self.mode.setCutValue("in", "-5")
+        self.assertEqual(self.ints(self.IN), [-5])
+
+    def test_redraws(self):
+        before = self.graph.redraws
+        self.mode.setCutValue("in", "1")
+        self.assertEqual(self.graph.redraws, before + 1)
+
+
+class TestReset(SourceGroupTest):
+    def test_restores_both_sentinels(self):
+        self.graph.seedInt(self.IN, [10])
+        self.graph.seedInt(self.OUT, [20])
+
+        self.mode.reset()
+
+        self.assertEqual(self.ints(self.IN), [-self.mod.MU_INT_MAX])
+        self.assertEqual(self.ints(self.OUT), [self.mod.MU_INT_MAX])
+
+    def test_clears_the_lock_it_takes(self):
+        self.mode.reset()
+        self.assertFalse(self.mode._locked)
+
+    def test_redraws(self):
+        before = self.graph.redraws
+        self.mode.reset()
+        self.assertEqual(self.graph.redraws, before + 1)
+
+
+class TestPrompts(SourceGroupTest):
+    def test_in_prompt_without_a_cut(self):
+        self.assertEqual(self.mode.cutInPrompt(), "Set Source In Point:")
+
+    def test_in_prompt_with_a_cut(self):
+        self.graph.seedInt(self.IN, [7])
+        self.assertEqual(self.mode.cutInPrompt(), "Set Source In Point (current=7):")
+
+    def test_out_prompt_without_a_cut(self):
+        self.assertEqual(self.mode.cutOutPrompt(), "Set Source Out Point:")
+
+    def test_out_prompt_with_a_cut(self):
+        self.graph.seedInt(self.OUT, [99])
+        self.assertEqual(self.mode.cutOutPrompt(), "Set Source Out Point (current=99):")
+
+
+class TestSyncSlot(SourceGroupTest):
+    def test_enabling_writes_one(self):
+        self.graph.seedInt(self.SYNC, [0])
+        self.mode.syncSlot(True)
+        self.assertEqual(self.ints(self.SYNC), [1])
+
+    def test_disabling_writes_zero(self):
+        self.graph.seedInt(self.SYNC, [1])
+        self.mode.syncSlot(False)
+        self.assertEqual(self.ints(self.SYNC), [0])
+
+    def test_locked_mode_ignores_the_toggle(self):
+        self.graph.seedInt(self.SYNC, [0])
+        self.mode._locked = True
+        self.mode.syncSlot(True)
+        self.assertEqual(self.ints(self.SYNC), [0])
+
+
+class TestNewInOutPoint(SourceGroupTest):
+    class _Event:
+        def __init__(self):
+            self.rejected = False
+
+        def reject(self):
+            self.rejected = True
+
+    def test_in_point_follows_the_session_when_syncing(self):
+        self.graph.seedInt(self.SYNC, [1])
+        event = self._Event()
+        self.mode.newInPoint(event)
+        self.assertEqual(self.ints(self.IN), [1])       # FakeGraph inPoint() == 1
+        self.assertTrue(event.rejected)
+
+    def test_out_point_follows_the_session_when_syncing(self):
+        self.graph.seedInt(self.SYNC, [1])
+        self.mode.newOutPoint(self._Event())
+        self.assertEqual(self.ints(self.OUT), [100])    # FakeGraph outPoint() == 100
+
+    def test_no_write_when_sync_is_off(self):
+        self.graph.seedInt(self.SYNC, [0])
+        self.mode.newInPoint(self._Event())
+        self.assertEqual(self.ints(self.IN), [-self.mod.MU_INT_MAX])
+
+    def test_no_write_while_locked(self):
+        self.graph.seedInt(self.SYNC, [1])
+        self.mode._locked = True
+        self.mode.newInPoint(self._Event())
+        self.assertEqual(self.ints(self.IN), [-self.mod.MU_INT_MAX])
+
+    def test_event_is_always_rejected(self):
+        """Rejecting lets the rest of RV keep handling the point change."""
+        self.graph.seedInt(self.SYNC, [0])
+        event = self._Event()
+        self.mode.newOutPoint(event)
+        self.assertTrue(event.rejected)
+
+
+class TestUpdateUIWithoutPanel(SourceGroupTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_stack_edit_mode.py b/src/test/golden/session_manager/unit/test_stack_edit_mode.py
new file mode 100644
index 000000000..747f0c204
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_stack_edit_mode.py
@@ -0,0 +1,197 @@
+"""Gate 5 — Stack_edit_mode on the port itself.
+
+checkBoxSlot is the method the Qt.CheckState enum defect lived in: PySide6 delivers
+stateChanged as a plain int, so the direct ``state == Qt.Checked`` comparison Mu uses
+was always False and every toggle wrote 0. Those writes are what the behavioral gate
+saw as retimeInputs/useCutInfo/alignStartFrames silently reverting, so both polarities
+are pinned here as well as at the scenario level.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class StackTest(unittest.TestCase):
+    NODE = "stack"
+
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("Stack_edit_mode")
+        self.mode = self.mod.StackEditMode.__new__(self.mod.StackEditMode)
+        self.mode._ui = None
+        self.mode._uiInFlux = False
+
+        self.graph.addNode("stackGroup", "RVStackGroup")
+        self.graph.addNode(self.NODE, "RVStack", group="stackGroup")
+        self.graph.viewNode = "stackGroup"
+
+    def ints(self, name):
+        return self.graph.getIntProperty(name)
+
+
+class TestCheckBoxSlot(StackTest):
+    PROP = "stack.mode.alignStartFrames"
+
+    def test_checked_writes_one(self):
+        self.graph.seedInt(self.PROP, [0])
+        self.mode.checkBoxSlot(2, self.PROP)
+        self.assertEqual(self.ints(self.PROP), [1])
+
+    def test_unchecked_writes_zero(self):
+        self.graph.seedInt(self.PROP, [1])
+        self.mode.checkBoxSlot(0, self.PROP)
+        self.assertEqual(self.ints(self.PROP), [0])
+
+    def test_checked_accepts_the_enum_too(self):
+        self.graph.seedInt(self.PROP, [0])
+        self.mode.checkBoxSlot(Qt.Checked, self.PROP)
+        self.assertEqual(self.ints(self.PROP), [1])
+
+    def test_no_write_when_already_in_that_state(self):
+        self.graph.seedInt(self.PROP, [1])
+        before = dict(self.graph.props)
+        self.mode.checkBoxSlot(2, self.PROP)
+        self.assertEqual(self.graph.props, before)
+
+    def test_a_real_checkbox_signal_reaches_the_property(self):
+        """End to end through Qt, which is where the enum mismatch actually bit."""
+        self.graph.seedInt(self.PROP, [0])
+        box = QtWidgets.QCheckBox()
+        box.stateChanged.connect(
+            lambda s: self.mode.checkBoxSlot(s, self.PROP)
+        )
+        box.setCheckState(Qt.Checked)
+        self.assertEqual(self.ints(self.PROP), [1])
+
+    def test_a_real_checkbox_can_clear_it_again(self):
+        self.graph.seedInt(self.PROP, [1])
+        box = QtWidgets.QCheckBox()
+        box.setCheckState(Qt.Checked)
+        box.stateChanged.connect(
+            lambda s: self.mode.checkBoxSlot(s, self.PROP)
+        )
+        box.setCheckState(Qt.Unchecked)
+        self.assertEqual(self.ints(self.PROP), [0])
+
+
+class TestSetChosenAudioInput(StackTest):
+    PROP = "stack.output.chosenAudioInput"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.seedString(self.PROP, [".all."])
+        self.combo = QtWidgets.QComboBox()
+        for label, data in (
+            ("All Inputs Mixed", ".all."),
+            ("First Input Only", ".first."),
+            ("First Visible Input", ".topmost."),
+            ("SourceA", "sourceGroupA"),
+        ):
+            self.combo.addItem(label, data)
+        self.mode._chosenAudioInputCombo = self.combo
+
+    def strings(self):
+        return self.graph.getStringProperty(self.PROP)
+
+    def test_selecting_first_only(self):
+        self.mode.setChosenAudioInput(1)
+        self.assertEqual(self.strings(), [".first."])
+
+    def test_selecting_topmost(self):
+        self.mode.setChosenAudioInput(2)
+        self.assertEqual(self.strings(), [".topmost."])
+
+    def test_node_entries_start_at_index_three(self):
+        self.mode.setChosenAudioInput(3)
+        self.assertEqual(self.strings(), ["sourceGroupA"])
+
+    def test_out_of_range_falls_back_to_all(self):
+        self.graph.seedString(self.PROP, [".first."])
+        self.mode.setChosenAudioInput(99)
+        self.assertEqual(self.strings(), [".all."])
+
+    def test_reselecting_the_current_value_writes_nothing(self):
+        before = self.graph.redraws
+        self.mode.setChosenAudioInput(0)
+        self.assertEqual(self.graph.redraws, before)
+
+    def test_ui_in_flux_suppresses_the_write(self):
+        """updateUI() repopulates the combo; those signals must not write back."""
+        self.mode._uiInFlux = True
+        self.mode.setChosenAudioInput(1)
+        self.assertEqual(self.strings(), [".all."])
+
+
+class TestSizeEdits(StackTest):
+    PROP = "stack.output.size"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.seedInt(self.PROP, [1920, 1080])
+        self.mode._outputWidthEdit = QtWidgets.QLineEdit()
+        self.mode._outputHeightEdit = QtWidgets.QLineEdit()
+
+    def test_width_change_keeps_height(self):
+        self.mode._outputWidthEdit.setText("1280")
+        self.mode.widthChanged()
+        self.assertEqual(self.ints(self.PROP), [1280, 1080])
+
+    def test_height_change_keeps_width(self):
+        self.mode._outputHeightEdit.setText("720")
+        self.mode.heightChanged()
+        self.assertEqual(self.ints(self.PROP), [1920, 720])
+
+    def test_the_two_edits_compose(self):
+        self.mode._outputWidthEdit.setText("1280")
+        self.mode.widthChanged()
+        self.mode._outputHeightEdit.setText("720")
+        self.mode.heightChanged()
+        self.assertEqual(self.ints(self.PROP), [1280, 720])
+
+    def test_a_float_string_is_truncated(self):
+        self.mode._outputWidthEdit.setText("1280.7")
+        self.mode.widthChanged()
+        self.assertEqual(self.ints(self.PROP), [1280, 1080])
+
+
+class TestFpsChanged(StackTest):
+    PROP = "stack.output.fps"
+
+    def test_writes_the_new_rate(self):
+        self.graph.seedFloat(self.PROP, [24.0])
+        self.mode._outputFPSEdit = QtWidgets.QLineEdit("48")
+        self.mode.fpsChanged()
+        self.assertEqual(self.graph.getFloatProperty(self.PROP), [48.0])
+
+    def test_redraws_even_when_the_write_fails(self):
+        """fpsChanged swallows the property error but must still redraw."""
+        self.graph.seedInt(self.PROP, [24])   # wrong type on purpose
+        self.mode._outputFPSEdit = QtWidgets.QLineEdit("48")
+        before = self.graph.redraws
+        self.mode.fpsChanged()
+        self.assertEqual(self.graph.redraws, before + 1)
+
+
+class TestUpdateUIWithoutPanel(StackTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_state_props.py b/src/test/golden/session_manager/unit/test_state_props.py
new file mode 100644
index 000000000..6bfce5b70
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_state_props.py
@@ -0,0 +1,205 @@
+"""Gate 5 — the sm_state.* property helpers, exercised on the port itself.
+
+These are the functions that persist tree state into the session graph, so each test
+drives the real function and then reads the FakeGraph to check what landed in the
+property — the same thing the behavioral gate diffs out of session.rv, at one
+function's granularity.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6.QtCore import Qt
+    from PySide6.QtGui import QStandardItem
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class StateTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+
+    def strings(self, name):
+        return self.graph.getStringProperty(name)
+
+    def ints(self, name):
+        return self.graph.getIntProperty(name)
+
+
+class TestExpandedInParent(StateTest):
+    PROP = "src.sm_state.expandState"
+
+    def test_absent_property_reads_false(self):
+        self.assertFalse(self.sm.isExpandedInParent("src", "folder"))
+
+    def test_first_write_creates_scalar_property(self):
+        """Mu passes the bare parent, not a one-element array, on the create path."""
+        self.sm.setExpandedInParent("src", "folder", True)
+        self.assertEqual(self.strings(self.PROP), ["folder"])
+        self.assertTrue(self.sm.isExpandedInParent("src", "folder"))
+
+    def test_collapse_removes_only_that_parent(self):
+        self.sm.setExpandedInParent("src", "folderA", True)
+        self.sm.setExpandedInParent("src", "folderB", True)
+        self.assertEqual(self.strings(self.PROP), ["folderA", "folderB"])
+
+        self.sm.setExpandedInParent("src", "folderA", False)
+        self.assertEqual(self.strings(self.PROP), ["folderB"])
+        self.assertFalse(self.sm.isExpandedInParent("src", "folderA"))
+        self.assertTrue(self.sm.isExpandedInParent("src", "folderB"))
+
+    def test_expanding_twice_does_not_duplicate(self):
+        self.sm.setExpandedInParent("src", "folder", True)
+        self.sm.setExpandedInParent("src", "folder", True)
+        self.assertEqual(self.strings(self.PROP), ["folder"])
+
+    def test_collapsing_an_absent_parent_is_a_noop(self):
+        self.sm.setExpandedInParent("src", "folderA", True)
+        self.sm.setExpandedInParent("src", "folderB", False)
+        self.assertEqual(self.strings(self.PROP), ["folderA"])
+
+    def test_top_level_parent_is_the_empty_string(self):
+        """A node sitting directly under a category has "" for its parent node.
+
+        Worth pinning: the property is created with an empty value, which is exactly
+        the phantom write that appeared when mapItems() returned a sub-component
+        first and scrollTo() expanded the node row.
+        """
+        self.sm.setExpandedInParent("src", "", True)
+        self.assertEqual(self.strings(self.PROP), [""])
+
+
+class TestSubComponentExpanded(StateTest):
+    PROP = "src.sm_state.expandedSubState"
+
+    def _viewItem(self):
+        # The parent has to be kept alive: appendRow() hands ownership of the child
+        # to it, so letting it go out of scope deletes the child's C++ object and any
+        # later item.data() raises "Internal C++ object already deleted" — the same
+        # ownership trap that the session-window wrapper hit in the port itself.
+        media = QStandardItem("m.exr")
+        media.setData(self.sm.MediaSubComponent, Qt.UserRole + 4)
+        media.setData("m.exr", Qt.UserRole + 5)
+        view = QStandardItem("left")
+        view.setData(self.sm.ViewSubComponent, Qt.UserRole + 4)
+        view.setData("left", Qt.UserRole + 5)
+        media.appendRow([view])
+        self._retain = media
+        return view
+
+    def test_absent_property_reads_false(self):
+        self.assertFalse(self.sm.isSubComponentExpanded("src", self._viewItem()))
+
+    def test_round_trip_uses_the_item_hash_as_key(self):
+        item = self._viewItem()
+        self.sm.setSubComponentExpanded("src", item, True)
+        self.assertEqual(self.strings(self.PROP), [self.sm.hashedSubComponent(item)])
+        self.assertTrue(self.sm.isSubComponentExpanded("src", item))
+
+    def test_collapse_removes_the_key(self):
+        item = self._viewItem()
+        self.sm.setSubComponentExpanded("src", item, True)
+        self.sm.setSubComponentExpanded("src", item, False)
+        self.assertEqual(self.strings(self.PROP), [])
+        self.assertFalse(self.sm.isSubComponentExpanded("src", item))
+
+    def test_first_write_is_a_one_element_array(self):
+        """Unlike expandState, Mu creates this one with string[]{key}."""
+        item = self._viewItem()
+        self.sm.setSubComponentExpanded("src", item, True)
+        self.assertEqual(len(self.strings(self.PROP)), 1)
+
+
+class TestToolTipProp(StateTest):
+    def test_missing_returns_none(self):
+        self.assertIsNone(self.sm.toolTipFromProp("src"))
+
+    def test_round_trip(self):
+        self.sm.setToolTipProp("src", "some tip")
+        self.assertEqual(self.sm.toolTipFromProp("src"), "some tip")
+
+    def test_overwrite(self):
+        self.sm.setToolTipProp("src", "first")
+        self.sm.setToolTipProp("src", "second")
+        self.assertEqual(self.sm.toolTipFromProp("src"), "second")
+
+
+class TestSortKey(StateTest):
+    KEY = "src.sm_state.sortKey"
+    PARENT = "src.sm_state.sortKeyParent"
+
+    def test_missing_returns_undefined_marker(self):
+        self.assertEqual(self.sm.sortKeyInParent("src", "folder"),
+                         self.sm.UNDEFINED_SORT_KEY)
+        self.assertEqual(self.sm.UNDEFINED_SORT_KEY, 2 ** 31 - 1 - 100)
+
+    def test_first_write_creates_both_properties(self):
+        self.sm.setSortKeyInParent("src", "folder", 3)
+        self.assertEqual(self.strings(self.PARENT), ["folder"])
+        self.assertEqual(self.ints(self.KEY), [3])
+        self.assertEqual(self.sm.sortKeyInParent("src", "folder"), 3)
+
+    def test_second_parent_appends_a_pair(self):
+        self.sm.setSortKeyInParent("src", "folderA", 1)
+        self.sm.setSortKeyInParent("src", "folderB", 2)
+        self.assertEqual(self.strings(self.PARENT), ["folderA", "folderB"])
+        self.assertEqual(self.ints(self.KEY), [1, 2])
+        self.assertEqual(self.sm.sortKeyInParent("src", "folderA"), 1)
+        self.assertEqual(self.sm.sortKeyInParent("src", "folderB"), 2)
+
+    def test_rewriting_a_known_parent_updates_in_place(self):
+        self.sm.setSortKeyInParent("src", "folderA", 1)
+        self.sm.setSortKeyInParent("src", "folderB", 2)
+        self.sm.setSortKeyInParent("src", "folderA", 9)
+        self.assertEqual(self.strings(self.PARENT), ["folderA", "folderB"])
+        self.assertEqual(self.ints(self.KEY), [9, 2])
+
+    def test_unknown_parent_reads_undefined(self):
+        self.sm.setSortKeyInParent("src", "folderA", 1)
+        self.assertEqual(self.sm.sortKeyInParent("src", "other"),
+                         self.sm.UNDEFINED_SORT_KEY)
+
+    def test_length_mismatch_reads_undefined(self):
+        """A half-written pair must not be trusted; Mu falls back to the marker."""
+        self.sm.setSortKeyInParent("src", "folderA", 1)
+        self.sm.setStringProp(self.PARENT, ["folderA", "folderB"])
+        self.assertEqual(self.sm.sortKeyInParent("src", "folderB"),
+                         self.sm.UNDEFINED_SORT_KEY)
+
+
+class TestAssignSortOrder(StateTest):
+    def test_numbers_children_in_current_order(self):
+        root = QStandardItem("folder")
+        root.setData("folderNode", Qt.UserRole + 2)
+        for name in ("a", "b", "c"):
+            child = QStandardItem(name)
+            child.setData(name, Qt.UserRole + 2)
+            root.appendRow([child])
+
+        self.sm.assignSortOrder(root)
+
+        self.assertEqual(self.sm.sortKeyInParent("a", "folderNode"), 0)
+        self.assertEqual(self.sm.sortKeyInParent("b", "folderNode"), 1)
+        self.assertEqual(self.sm.sortKeyInParent("c", "folderNode"), 2)
+
+    def test_none_root_is_a_noop(self):
+        self.sm.assignSortOrder(None)   # must not raise
+
+    def test_empty_root_writes_nothing(self):
+        root = QStandardItem("folder")
+        root.setData("folderNode", Qt.UserRole + 2)
+        before = dict(self.graph.props)
+        self.sm.assignSortOrder(root)
+        self.assertEqual(self.graph.props, before)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_subcomponent_prop.py b/src/test/golden/session_manager/unit/test_subcomponent_prop.py
new file mode 100644
index 000000000..6d2a32567
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_subcomponent_prop.py
@@ -0,0 +1,103 @@
+"""Gate 5 — subComponentPropValue on the port itself.
+
+This builds the request.imageComponent value for a clicked sub-component row, so its
+shape per sub-type is what decides which view/layer/channel the source resolves to.
+The channel case walks its parent recursively and its length assertions encode which
+parent shapes Mu considers possible.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6.QtCore import Qt
+    from PySide6.QtGui import QStandardItem
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class PropValueTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+
+    def _sub(self, subType, value):
+        item = QStandardItem(str(value))
+        item.setData(subType, Qt.UserRole + 4)
+        item.setData(value, Qt.UserRole + 5)
+        return item
+
+
+class TestSubComponentPropValue(PropValueTest):
+    def test_media_has_no_request_value(self):
+        media = self._sub(self.sm.MediaSubComponent, "m.exr")
+        self.assertEqual(self.sm.subComponentPropValue(media), [])
+
+    def test_non_subcomponent_has_no_request_value(self):
+        self.assertEqual(self.sm.subComponentPropValue(QStandardItem("Src")), [])
+
+    def test_view(self):
+        view = self._sub(self.sm.ViewSubComponent, "left")
+        self.assertEqual(self.sm.subComponentPropValue(view), ["view", "left"])
+
+    def test_layer_under_a_view_carries_the_view(self):
+        view = self._sub(self.sm.ViewSubComponent, "left")
+        layer = self._sub(self.sm.LayerSubComponent, "diffuse")
+        view.appendRow([layer])
+        self.assertEqual(
+            self.sm.subComponentPropValue(layer), ["layer", "left", "diffuse"]
+        )
+
+    def test_layer_under_media_has_an_empty_view_slot(self):
+        media = self._sub(self.sm.MediaSubComponent, "m.exr")
+        layer = self._sub(self.sm.LayerSubComponent, "diffuse")
+        media.appendRow([layer])
+        self.assertEqual(self.sm.subComponentPropValue(layer), ["layer", "", "diffuse"])
+
+    def test_channel_under_a_layer_under_a_view(self):
+        view = self._sub(self.sm.ViewSubComponent, "left")
+        layer = self._sub(self.sm.LayerSubComponent, "diffuse")
+        channel = self._sub(self.sm.ChannelSubComponent, "R")
+        view.appendRow([layer])
+        layer.appendRow([channel])
+        self.assertEqual(
+            self.sm.subComponentPropValue(channel),
+            ["channel", "left", "diffuse", "R"],
+        )
+
+    def test_channel_under_a_view(self):
+        view = self._sub(self.sm.ViewSubComponent, "left")
+        channel = self._sub(self.sm.ChannelSubComponent, "R")
+        view.appendRow([channel])
+        self.assertEqual(
+            self.sm.subComponentPropValue(channel), ["channel", "left", "", "R"]
+        )
+
+    def test_channel_under_media_has_both_slots_empty(self):
+        media = self._sub(self.sm.MediaSubComponent, "m.exr")
+        channel = self._sub(self.sm.ChannelSubComponent, "R")
+        media.appendRow([channel])
+        self.assertEqual(
+            self.sm.subComponentPropValue(channel), ["channel", "", "", "R"]
+        )
+
+    def test_every_shape_is_accepted_by_the_length_assertion(self):
+        """The channel branch asserts its parent value is 0, 2 or 3 long.
+
+        Each parent shape reachable in the tree is exercised above; this checks the
+        assertion never trips for a layer parent, whose value is 3 long.
+        """
+        view = self._sub(self.sm.ViewSubComponent, "left")
+        layer = self._sub(self.sm.LayerSubComponent, "diffuse")
+        view.appendRow([layer])
+        self.assertEqual(len(self.sm.subComponentPropValue(layer)), 3)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_switch_edit_mode.py b/src/test/golden/session_manager/unit/test_switch_edit_mode.py
new file mode 100644
index 000000000..bbc7acb4d
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_switch_edit_mode.py
@@ -0,0 +1,114 @@
+"""Gate 5 — Switch_edit_mode on the port itself.
+
+Switch's checkBoxSlot writes unconditionally (unlike Stack's, which compares first),
+so the enum handling is pinned separately here rather than assumed to match.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class SwitchTest(unittest.TestCase):
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("Switch_edit_mode")
+        self.mode = self.mod.SwitchEditMode.__new__(self.mod.SwitchEditMode)
+        self.mode._ui = None
+        self.mode._uiInFlux = False
+
+        self.graph.addNode("switchGroup", "RVSwitchGroup")
+        self.graph.addNode("switch", "RVSwitch", group="switchGroup")
+        self.graph.viewNode = "switchGroup"
+
+
+class TestCheckBoxSlot(SwitchTest):
+    PROP = "switch.mode.alignStartFrames"
+
+    def test_checked_writes_one(self):
+        self.graph.seedInt(self.PROP, [0])
+        self.mode.checkBoxSlot(2, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+    def test_unchecked_writes_zero(self):
+        self.graph.seedInt(self.PROP, [1])
+        self.mode.checkBoxSlot(0, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [0])
+
+    def test_enum_argument(self):
+        self.graph.seedInt(self.PROP, [0])
+        self.mode.checkBoxSlot(Qt.Checked, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+    def test_writes_even_when_unchanged(self):
+        """Unlike Stack, Switch has no equality guard; the write always happens."""
+        self.graph.seedInt(self.PROP, [1])
+        self.mode.checkBoxSlot(2, self.PROP)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+    def test_creates_the_property_when_missing(self):
+        self.mode.checkBoxSlot(2, "switch.mode.useCutInfo")
+        self.assertEqual(self.graph.getIntProperty("switch.mode.useCutInfo"), [1])
+
+    def test_through_a_real_checkbox(self):
+        self.graph.seedInt(self.PROP, [0])
+        box = QtWidgets.QCheckBox()
+        box.stateChanged.connect(lambda s: self.mode.checkBoxSlot(s, self.PROP))
+        box.setCheckState(Qt.Checked)
+        self.assertEqual(self.graph.getIntProperty(self.PROP), [1])
+
+
+class TestSetSelectedInput(SwitchTest):
+    PROP = "switch.output.input"
+
+    def setUp(self):
+        super().setUp()
+        self.graph.seedString(self.PROP, [""])
+        self.combo = QtWidgets.QComboBox()
+        self.combo.addItem("SourceA", "sourceGroupA")
+        self.combo.addItem("SourceB", "sourceGroupB")
+        self.mode._selectedInputCombo = self.combo
+
+    def test_selects_the_named_input(self):
+        self.mode.setSelectedInput(1)
+        self.assertEqual(self.graph.getStringProperty(self.PROP), ["sourceGroupB"])
+
+    def test_out_of_range_writes_the_empty_name(self):
+        self.graph.seedString(self.PROP, ["sourceGroupA"])
+        self.mode.setSelectedInput(99)
+        self.assertEqual(self.graph.getStringProperty(self.PROP), [""])
+
+    def test_reselecting_the_current_value_does_not_redraw(self):
+        self.mode.setSelectedInput(0)
+        before = self.graph.redraws
+        self.mode.setSelectedInput(0)
+        self.assertEqual(self.graph.redraws, before)
+
+    def test_ui_in_flux_suppresses_the_write(self):
+        self.mode._uiInFlux = True
+        self.mode.setSelectedInput(1)
+        self.assertEqual(self.graph.getStringProperty(self.PROP), [""])
+
+
+class TestUpdateUIWithoutPanel(SwitchTest):
+    def test_is_a_noop_when_the_editor_is_not_loaded(self):
+        self.mode.updateUI()   # must not raise
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_transform_manip.py b/src/test/golden/session_manager/unit/test_transform_manip.py
new file mode 100644
index 000000000..ed5b436f0
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_transform_manip.py
@@ -0,0 +1,142 @@
+"""Gate 5 — transform_manip's geometry helpers on the port itself.
+
+These are the module-level vector helpers the manipulator's hit testing and drawing
+are built on. They are pure, so they are imported and called directly.
+"""
+from __future__ import annotations
+
+import math
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class ManipTest(unittest.TestCase):
+    def setUp(self):
+        try:
+            self.mod, self.graph = _rv_stubs.importPort("transform_manip")
+        except ImportError as exc:
+            raise unittest.SkipTest("transform_manip needs PyOpenGL: %s" % exc)
+
+
+class TestVectorOps(ManipTest):
+    def test_add(self):
+        self.assertEqual(tuple(self.mod._add((1.0, 2.0), (3.0, 4.0))), (4.0, 6.0))
+
+    def test_sub(self):
+        self.assertEqual(tuple(self.mod._sub((5.0, 7.0), (2.0, 3.0))), (3.0, 4.0))
+
+    def test_scale(self):
+        self.assertEqual(tuple(self.mod._scale((2.0, 3.0), 2.0)), (4.0, 6.0))
+
+    def test_scale_by_zero(self):
+        self.assertEqual(tuple(self.mod._scale((2.0, 3.0), 0.0)), (0.0, 0.0))
+
+    def test_add_and_sub_are_inverse(self):
+        a, b = (1.5, -2.5), (0.25, 4.0)
+        self.assertEqual(tuple(self.mod._sub(self.mod._add(a, b), b)), a)
+
+
+class TestDot(ManipTest):
+    def test_perpendicular_is_zero(self):
+        self.assertAlmostEqual(self.mod.dot((1.0, 0.0), (0.0, 1.0)), 0.0)
+
+    def test_parallel(self):
+        self.assertAlmostEqual(self.mod.dot((2.0, 0.0), (3.0, 0.0)), 6.0)
+
+    def test_anti_parallel_is_negative(self):
+        self.assertLess(self.mod.dot((1.0, 0.0), (-1.0, 0.0)), 0.0)
+
+    def test_commutative(self):
+        a, b = (1.0, 2.0), (3.0, 4.0)
+        self.assertAlmostEqual(self.mod.dot(a, b), self.mod.dot(b, a))
+
+
+class TestMag(ManipTest):
+    def test_pythagorean(self):
+        self.assertAlmostEqual(self.mod.mag((3.0, 4.0)), 5.0)
+
+    def test_zero(self):
+        self.assertAlmostEqual(self.mod.mag((0.0, 0.0)), 0.0)
+
+    def test_unit(self):
+        self.assertAlmostEqual(self.mod.mag((1.0, 0.0)), 1.0)
+
+
+class TestNormalize(ManipTest):
+    def test_result_is_unit_length(self):
+        self.assertAlmostEqual(self.mod.mag(self.mod.normalize((3.0, 4.0))), 1.0)
+
+    def test_direction_is_preserved(self):
+        n = self.mod.normalize((3.0, 4.0))
+        self.assertAlmostEqual(n[0], 0.6)
+        self.assertAlmostEqual(n[1], 0.8)
+
+    def test_diagonal(self):
+        n = self.mod.normalize((1.0, 1.0))
+        self.assertAlmostEqual(n[0], math.sqrt(2) / 2)
+
+    def test_zero_vector_still_divides_by_zero(self):
+        """normalize() has no zero guard, and deliberately still has none.
+
+        An earlier version of this test claimed the raise was harmless Mu parity
+        because no call site passes a zero vector. That was wrong: control() returns
+        (FreeTranslation, gc, gc) for a non-corner grab, so drag() used to normalize
+        exactly (0,0) on every free translation. The real fix was to stop computing
+        the diagonal on that path (see TestDragMath), not to guard here — guarding
+        would only move the ZeroDivisionError to the `/ downDist` a few lines later,
+        because a zero direction makes both projected distances 0 too.
+        """
+        with self.assertRaises(ZeroDivisionError):
+            self.mod.normalize((0.0, 0.0))
+
+
+class TestComputeGC(ManipTest):
+    def test_centroid_of_a_unit_square(self):
+        corners = [(0.0, 0.0), (1.0, 0.0), (1.0, 1.0), (0.0, 1.0)]
+        gc = self.mod.computeGC(corners)
+        self.assertAlmostEqual(gc[0], 0.5)
+        self.assertAlmostEqual(gc[1], 0.5)
+
+    def test_translated_square_moves_its_centroid(self):
+        corners = [(10.0, 10.0), (11.0, 10.0), (11.0, 11.0), (10.0, 11.0)]
+        gc = self.mod.computeGC(corners)
+        self.assertAlmostEqual(gc[0], 10.5)
+        self.assertAlmostEqual(gc[1], 10.5)
+
+
+class TestClosestPointOnLine(ManipTest):
+    def test_midpoint_of_a_horizontal_segment(self):
+        p = self.mod.closestPointOnLine((0.5, 3.0), (0.0, 0.0), (1.0, 0.0))
+        self.assertAlmostEqual(p[0], 0.5)
+        self.assertAlmostEqual(p[1], 0.0)
+
+    def test_point_already_on_the_line(self):
+        p = self.mod.closestPointOnLine((0.25, 0.0), (0.0, 0.0), (1.0, 0.0))
+        self.assertAlmostEqual(p[0], 0.25)
+
+
+class TestTagValue(ManipTest):
+    def test_finds_a_named_tag(self):
+        """Tags arrive as a list of (name, value) pairs, not a mapping."""
+        self.assertEqual(self.mod.tagValue([("a", "1"), ("b", "2")], "b"), "2")
+
+    def test_missing_tag_is_none(self):
+        self.assertIsNone(self.mod.tagValue([("a", "1")], "zzz"))
+
+    def test_empty_tag_list(self):
+        self.assertIsNone(self.mod.tagValue([], "a"))
+
+    def test_first_match_wins(self):
+        self.assertEqual(self.mod.tagValue([("a", "1"), ("a", "2")], "a"), "1")
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_transform_manip_mode.py b/src/test/golden/session_manager/unit/test_transform_manip_mode.py
new file mode 100644
index 000000000..e653d7290
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_transform_manip_mode.py
@@ -0,0 +1,331 @@
+"""Gate 5 — TransformManip's stateful methods on the port itself.
+
+The vector helpers are covered in test_transform_manip.py; this covers the mode
+methods that mutate the graph: the tmanip tag lifecycle, the corner hit test, and the
+two menu actions. The manipulator is invisible to the golden scenarios (it draws in
+GL and is driven by pointer events), so these are the only tests that pin it.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class ManipModeTest(unittest.TestCase):
+    def setUp(self):
+        try:
+            self.mod, self.graph = _rv_stubs.importPort("transform_manip")
+        except ImportError as exc:
+            raise unittest.SkipTest("transform_manip needs PyOpenGL: %s" % exc)
+        self.mode = self.mod.TransformManip.__new__(self.mod.TransformManip)
+        self.mode._editNodes = []
+        self.graph.addNode("layoutGroup", "RVLayoutGroup")
+        self.graph.viewNode = "layoutGroup"
+
+    def pair(self, tform, inputNode):
+        self.graph.addNode(tform, "RVTransform2D")
+        return self.mod.EditNodePair(tform, inputNode)
+
+
+class TestEditNode(ManipModeTest):
+    def test_finds_the_pair_by_transform_node(self):
+        a = self.pair("t_a", "src_a")
+        b = self.pair("t_b", "src_b")
+        self.mode._editNodes = [a, b]
+        self.assertIs(self.mode.editNode("t_b"), b)
+
+    def test_unknown_name_is_none(self):
+        self.mode._editNodes = [self.pair("t_a", "src_a")]
+        self.assertIsNone(self.mode.editNode("nope"))
+
+    def test_empty_list_is_none(self):
+        self.assertIsNone(self.mode.editNode("t_a"))
+
+
+class TestSetManipState(ManipModeTest):
+    def test_writes_the_tag_property(self):
+        p = self.pair("t_a", "src_a")
+        self.mode.setManipState(p, "hover")
+        self.assertEqual(
+            self.graph.getStringProperty("t_a.tag.tmanip_state"), ["hover"]
+        )
+
+    def test_none_pair_is_a_noop(self):
+        self.mode.setManipState(None, "hover")   # must not raise
+
+    def test_missing_node_is_a_noop(self):
+        p = self.mod.EditNodePair("notANode", "src")
+        self.mode.setManipState(p, "hover")
+        self.assertFalse(self.graph.propertyExists("notANode.tag.tmanip_state"))
+
+
+class TestActiveImageIndex(ManipModeTest):
+    def test_returns_the_index_of_the_tagged_image(self):
+        self.graph.renderedImages = lambda: [
+            {"index": 0, "tags": [("other", "x")]},
+            {"index": 7, "tags": [("tmanip_state", "hover")]},
+        ]
+        self.mod.commands.renderedImages = self.graph.renderedImages
+        self.assertEqual(self.mode.activeImageIndex(), 7)
+
+    def test_empty_tag_value_does_not_count(self):
+        self.graph.renderedImages = lambda: [
+            {"index": 3, "tags": [("tmanip_state", "")]},
+        ]
+        self.mod.commands.renderedImages = self.graph.renderedImages
+        self.assertEqual(self.mode.activeImageIndex(), -1)
+
+    def test_no_images_is_minus_one(self):
+        self.mod.commands.renderedImages = lambda: []
+        self.assertEqual(self.mode.activeImageIndex(), -1)
+
+
+class TestControlHitTest(ManipModeTest):
+    """Which corner the pointer grabs, given a 100x100 image centred on (50,50)."""
+
+    CORNERS = [(0.0, 0.0), (100.0, 0.0), (100.0, 100.0), (0.0, 100.0)]
+
+    def _control(self, pointer):
+        self.mod.commands.imageGeometryByIndex = lambda i: self.CORNERS
+
+        class _Ev:
+            def pointer(self_inner):
+                return pointer
+
+        return self.mode.control(0, _Ev())
+
+    def test_bottom_left(self):
+        control, gc, corner = self._control((2.0, 2.0))
+        self.assertEqual(control, self.mod.BotLeftCorner)
+        self.assertEqual(tuple(corner), (0.0, 0.0))
+
+    def test_bottom_right(self):
+        control, _, corner = self._control((99.0, 2.0))
+        self.assertEqual(control, self.mod.BotRightCorner)
+
+    def test_top_right(self):
+        control, _, _ = self._control((99.0, 99.0))
+        self.assertEqual(control, self.mod.TopRightCorner)
+
+    def test_top_left(self):
+        control, _, _ = self._control((2.0, 99.0))
+        self.assertEqual(control, self.mod.TopLeftCorner)
+
+    def test_centre_is_a_free_translation(self):
+        control, gc, corner = self._control((50.0, 50.0))
+        self.assertEqual(control, self.mod.FreeTranslation)
+        self.assertEqual(tuple(gc), tuple(corner),
+                         "a free translation reports the centroid as the grab point")
+
+    def test_just_outside_the_corner_radius_is_free_translation(self):
+        """The corner hit box is 25 units; 30 away must not grab a corner."""
+        control, _, _ = self._control((30.0, 30.0))
+        self.assertEqual(control, self.mod.FreeTranslation)
+
+
+class TestResetAll(ManipModeTest):
+    def test_resets_every_edit_node(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a"), self.pair("t_b", "s_b")]
+        for n in ("t_a", "t_b"):
+            self.graph.seedFloat(n + ".transform.translate", [5.0, 5.0])
+            self.graph.seedFloat(n + ".transform.scale", [2.0, 2.0])
+            self.graph.seedFloat(n + ".transform.rotate", [45.0])
+
+        self.mode.resetAll(None)
+
+        for n in ("t_a", "t_b"):
+            self.assertEqual(
+                self.graph.getFloatProperty(n + ".transform.translate"), [0.0, 0.0])
+            self.assertEqual(
+                self.graph.getFloatProperty(n + ".transform.scale"), [1.0, 1.0])
+            self.assertEqual(
+                self.graph.getFloatProperty(n + ".transform.rotate"), [0.0])
+
+    def test_redraws(self):
+        before = self.graph.redraws
+        self.mode.resetAll(None)
+        self.assertEqual(self.graph.redraws, before + 1)
+
+    def test_no_edit_nodes_is_harmless(self):
+        self.mode.resetAll(None)   # must not raise
+
+
+class TestFitAll(ManipModeTest):
+    """fitAll's scale is always 1.0, because nodeAspect() ignores its argument.
+
+    nodeAspect(node) measures nodeImageGeometry(viewNode(), ...) and never looks at
+    `node` — transform_manip.mu:294 does the same, so this is Mu behavior the port
+    reproduces rather than a porting mistake. The consequence is that
+    `s = aspect / inaspect` divides the view aspect by itself, so "Fit All Images"
+    only ever resets the transforms instead of fitting anything. Pinned as-is: fixing
+    it would change what the command does, which is a product decision and something
+    no committed golden currently covers.
+    """
+
+    def _geometry(self, mapping):
+        self.mod.commands.nodeImageGeometry = lambda node, frame: mapping[node]
+
+    def test_scale_is_unity_even_when_the_aspects_differ(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a")]
+        self._geometry({
+            "layoutGroup": {"width": 200, "height": 100, "pixelAspect": 1.0},
+            "t_a": {"width": 100, "height": 100, "pixelAspect": 1.0},
+        })
+
+        self.mode.fitAll(None)
+
+        self.assertEqual(self.graph.getFloatProperty("t_a.transform.scale"), [1.0, 1.0])
+
+    def test_transform_is_otherwise_reset(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a")]
+        self._geometry({
+            "layoutGroup": {"width": 200, "height": 100, "pixelAspect": 1.0},
+            "t_a": {"width": 100, "height": 100, "pixelAspect": 1.0},
+        })
+        self.graph.seedFloat("t_a.transform.translate", [9.0, 9.0])
+        self.graph.seedFloat("t_a.transform.rotate", [45.0])
+
+        self.mode.fitAll(None)
+
+        self.assertEqual(
+            self.graph.getFloatProperty("t_a.transform.translate"), [0.0, 0.0])
+        self.assertEqual(self.graph.getFloatProperty("t_a.transform.rotate"), [0.0])
+
+    def test_matching_aspects_also_give_unit_scale(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a")]
+        self._geometry({
+            "layoutGroup": {"width": 100, "height": 100, "pixelAspect": 1.0},
+            "t_a": {"width": 100, "height": 100, "pixelAspect": 1.0},
+        })
+        self.mode.fitAll(None)
+        self.assertEqual(self.graph.getFloatProperty("t_a.transform.scale"), [1.0, 1.0])
+
+
+class TestNodeAspect(ManipModeTest):
+    """Note the `node` argument is ignored; the view node is always measured."""
+
+    def test_the_node_argument_is_ignored(self):
+        seen = []
+        self.mod.commands.nodeImageGeometry = lambda n, f: (
+            seen.append(n) or {"width": 100, "height": 100, "pixelAspect": 1.0})
+        self.mod.nodeAspect("someOtherNode")
+        self.assertEqual(seen, ["layoutGroup"],
+                         "matches transform_manip.mu:294, which measures viewNode()")
+
+    def test_wide_pixel_aspect_widens(self):
+        self.mod.commands.nodeImageGeometry = lambda n, f: {
+            "width": 100, "height": 100, "pixelAspect": 2.0}
+        self.assertAlmostEqual(self.mod.nodeAspect("layoutGroup"), 2.0)
+
+    def test_narrow_pixel_aspect_narrows(self):
+        self.mod.commands.nodeImageGeometry = lambda n, f: {
+            "width": 100, "height": 100, "pixelAspect": 0.5}
+        self.assertAlmostEqual(self.mod.nodeAspect("layoutGroup"), 0.5)
+
+    def test_square_pixels(self):
+        self.mod.commands.nodeImageGeometry = lambda n, f: {
+            "width": 160, "height": 80, "pixelAspect": 1.0}
+        self.assertAlmostEqual(self.mod.nodeAspect("layoutGroup"), 2.0)
+
+
+class TestTagLifecycle(ManipModeTest):
+    def _infos(self, nodes):
+        self.mod.commands.metaEvaluateClosestByType = lambda f, t: [
+            {"node": n} for n in nodes
+        ]
+
+    def test_find_editing_nodes_tags_each_transform(self):
+        self.graph.addNode("t_a", "RVTransform2D")
+        self.graph.connections["layoutGroup"] = ["s_a"]
+        self._infos(["t_a"])
+
+        self.mode.findEditingNodes()
+
+        self.assertEqual(len(self.mode._editNodes), 1)
+        self.assertEqual(self.graph.getStringProperty("t_a.tag.tmanip"), ["t_a"])
+        self.assertEqual(self.graph.getStringProperty("t_a.tag.tmanip_state"), [""])
+
+    def test_mismatched_counts_bail_out(self):
+        """Happens during teardown; tagging half a graph would leave stale tags."""
+        self.graph.connections["layoutGroup"] = ["s_a", "s_b"]
+        self._infos(["t_a"])
+
+        self.mode.findEditingNodes()
+
+        self.assertEqual(self.mode._editNodes, [])
+
+    def test_set_states_false_preserves_an_existing_tag(self):
+        self.graph.addNode("t_a", "RVTransform2D")
+        self.graph.connections["layoutGroup"] = ["s_a"]
+        self._infos(["t_a"])
+        self.graph.seedString("t_a.tag.tmanip_state", ["editing"])
+        self.graph.seedString("t_a.tag.tmanip", ["t_a"])
+
+        self.mode.findEditingNodes(False)
+
+        self.assertEqual(
+            self.graph.getStringProperty("t_a.tag.tmanip_state"), ["editing"],
+            "an in-progress edit must survive an inputs-changed refresh")
+
+    def test_remove_tags_deletes_both_properties(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a")]
+        self.graph.seedString("t_a.tag.tmanip", ["t_a"])
+        self.graph.seedString("t_a.tag.tmanip_state", [""])
+
+        self.mode.removeTags()
+
+        self.assertFalse(self.graph.propertyExists("t_a.tag.tmanip"))
+        self.assertFalse(self.graph.propertyExists("t_a.tag.tmanip_state"))
+
+    def test_remove_tags_tolerates_absent_properties(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a")]
+        self.mode.removeTags()   # must not raise
+
+    def test_before_view_change_removes_tags_and_rejects(self):
+        self.mode._editNodes = [self.pair("t_a", "s_a")]
+        self.graph.seedString("t_a.tag.tmanip", ["t_a"])
+        event = _Event("")
+        self.mode.beforeGraphViewChange(event)
+        self.assertFalse(self.graph.propertyExists("t_a.tag.tmanip"))
+        self.assertTrue(event.rejected)
+
+    def test_inputs_changed_on_the_view_node_refreshes_without_resetting_state(self):
+        self.graph.addNode("t_a", "RVTransform2D")
+        self.graph.connections["layoutGroup"] = ["s_a"]
+        self._infos(["t_a"])
+        self.graph.seedString("t_a.tag.tmanip", ["t_a"])
+        self.graph.seedString("t_a.tag.tmanip_state", ["editing"])
+
+        self.mode.nodeInputsChanged(_Event("layoutGroup"))
+
+        self.assertEqual(
+            self.graph.getStringProperty("t_a.tag.tmanip_state"), ["editing"])
+
+    def test_inputs_changed_on_another_node_is_ignored(self):
+        self._infos(["t_a"])
+        self.mode.nodeInputsChanged(_Event("someOtherNode"))
+        self.assertEqual(self.mode._editNodes, [])
+
+
+class _Event:
+    def __init__(self, contents):
+        self._contents = contents
+        self.rejected = False
+
+    def contents(self):
+        return self._contents
+
+    def reject(self):
+        self.rejected = True
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_transform_manip_pointer.py b/src/test/golden/session_manager/unit/test_transform_manip_pointer.py
new file mode 100644
index 000000000..e7009d552
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_transform_manip_pointer.py
@@ -0,0 +1,296 @@
+"""Gate 5 — TransformManip's pointer handlers on the port itself.
+
+These four handlers (move / push / drag / release) plus deactivate() are the whole
+interactive surface of the manipulator, and nothing else covered them: the golden
+scenarios drive the command API rather than the pointer, and the manipulator draws in
+GL, so neither the behavioral nor the pixel gate can see it.
+
+That gap hid two real defects until an independent review found them, both of which
+these tests now pin:
+
+* every handler called ``int(Qt.CursorShape.X)``, which raises TypeError under
+  PySide6 6.5 because Qt.CursorShape is a plain enum.Enum — so move() aborted before
+  it could ever find an edit node, and the manipulator never worked at all;
+* drag() computed the corner diagonal unconditionally, and control() returns the
+  centroid as the grab point for a non-corner grab, so a free-translation drag
+  normalised (0,0) and raised ZeroDivisionError on every event.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6.QtCore import Qt
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class _Event:
+    def __init__(self, pointer=(50.0, 25.0)):
+        self._pointer = pointer
+        self.rejected = False
+
+    def pointer(self):
+        return self._pointer
+
+    def reject(self):
+        self.rejected = True
+
+
+class PointerTest(unittest.TestCase):
+    """A single 100x50 tile whose RVTransform2D is tagged for the manipulator."""
+
+    CORNERS = [(0.0, 0.0), (100.0, 0.0), (100.0, 50.0), (0.0, 50.0)]
+
+    def setUp(self):
+        try:
+            self.mod, self.graph = _rv_stubs.importPort("transform_manip")
+        except ImportError as exc:
+            raise unittest.SkipTest("transform_manip needs PyOpenGL: %s" % exc)
+
+        self.mode = self.mod.TransformManip.__new__(self.mod.TransformManip)
+        self.mode._currentEditNode = None
+        self.mode._control = self.mod.NoControl
+        self.mode._editing = False
+        self.mode._didDrag = False
+        self.mode._downPoint = (0.0, 0.0)
+        self.mode._gc = (0.0, 0.0)
+        self.mode._corner = (0.0, 0.0)
+
+        self.graph.addNode("layoutGroup", "RVLayoutGroup")
+        self.graph.addNode("t_a", "RVTransform2D")
+        self.graph.viewNode = "layoutGroup"
+        self.graph.seedFloat("t_a.transform.translate", [0.0, 0.0])
+        self.graph.seedFloat("t_a.transform.scale", [1.0, 1.0])
+        self.mode._editNodes = [self.mod.EditNodePair("t_a", "src_a")]
+
+        self.cursors = []
+        self.mod.commands.setCursor = lambda c: self.cursors.append(c)
+        self.mod.commands.imageGeometryByIndex = lambda i: self.CORNERS
+        self.mod.commands.imagesAtPixel = lambda p, **k: [
+            {"inside": True, "index": 0, "tags": [("tmanip", "t_a")]}
+        ]
+        self.mod.commands.renderedImages = lambda: [
+            {"index": 0, "tags": [("tmanip_state", "hover")]}
+        ]
+
+    def translate(self):
+        return self.graph.getFloatProperty("t_a.transform.translate")
+
+    def scale(self):
+        return self.graph.getFloatProperty("t_a.transform.scale")
+
+
+class TestCursorShapesAreUsable(PointerTest):
+    """Every cursor the handlers set must survive being passed to setCursor."""
+
+    SHAPES = ("ArrowCursor", "SizeBDiagCursor", "SizeFDiagCursor",
+              "OpenHandCursor", "ClosedHandCursor", "WhatsThisCursor")
+
+    def test_int_on_a_cursor_shape_still_raises(self):
+        """Guards the reason .value is used, so nobody reintroduces int()."""
+        with self.assertRaises(TypeError):
+            int(Qt.CursorShape.ArrowCursor)
+
+    def test_every_shape_the_port_uses_has_an_int_value(self):
+        for name in self.SHAPES:
+            self.assertIsInstance(getattr(Qt.CursorShape, name).value, int, name)
+
+
+class TestMove(PointerTest):
+    def test_finds_the_tagged_edit_node(self):
+        self.mode.move(_Event((50.0, 25.0)))
+        self.assertIsNotNone(self.mode._currentEditNode,
+                             "move() must reach the imagesAtPixel loop")
+        self.assertEqual(self.mode._currentEditNode.tformNode, "t_a")
+
+    def test_sets_the_hover_manip_state(self):
+        self.mode.move(_Event((50.0, 25.0)))
+        self.assertEqual(
+            self.graph.getStringProperty("t_a.tag.tmanip_state"), ["hover"])
+
+    def test_centre_grab_reports_a_free_translation_and_open_hand(self):
+        self.mode.move(_Event((50.0, 25.0)))
+        self.assertEqual(self.mode._control, self.mod.FreeTranslation)
+        self.assertEqual(self.cursors[-1], Qt.CursorShape.OpenHandCursor.value)
+
+    def test_corner_grab_reports_a_corner_and_a_resize_cursor(self):
+        self.mode.move(_Event((2.0, 2.0)))
+        self.assertEqual(self.mode._control, self.mod.BotLeftCorner)
+        self.assertEqual(self.cursors[-1], Qt.CursorShape.SizeBDiagCursor.value)
+
+    def test_no_tile_under_the_pointer_clears_the_edit_node(self):
+        self.mod.commands.imagesAtPixel = lambda p, **k: []
+        self.mode._currentEditNode = self.mode._editNodes[0]
+        self.mode.move(_Event((5.0, 5.0)))
+        self.assertIsNone(self.mode._currentEditNode)
+        self.assertEqual(self.cursors[-1], Qt.CursorShape.ArrowCursor.value)
+
+    def test_leaving_a_tile_clears_its_manip_state(self):
+        self.mode.move(_Event((50.0, 25.0)))
+        self.mod.commands.imagesAtPixel = lambda p, **k: []
+        self.mode.move(_Event((500.0, 500.0)))
+        self.assertEqual(self.graph.getStringProperty("t_a.tag.tmanip_state"), [""])
+
+    def test_an_untagged_tile_is_not_grabbed(self):
+        self.mod.commands.imagesAtPixel = lambda p, **k: [
+            {"inside": True, "index": 0, "tags": [("other", "x")]}
+        ]
+        self.mode.move(_Event((50.0, 25.0)))
+        self.assertIsNone(self.mode._currentEditNode)
+
+    def test_the_event_is_rejected(self):
+        event = _Event((50.0, 25.0))
+        self.mode.move(event)
+        self.assertTrue(event.rejected)
+
+
+class TestPush(PointerTest):
+    def setUp(self):
+        super().setUp()
+        self.mode.move(_Event((50.0, 25.0)))
+
+    def test_begins_editing(self):
+        self.mode.push(_Event((50.0, 25.0)))
+        self.assertTrue(self.mode._editing)
+        self.assertFalse(self.mode._didDrag)
+
+    def test_records_the_down_point(self):
+        self.mode.push(_Event((60.0, 30.0)))
+        self.assertEqual(tuple(self.mode._downPoint), (60.0, 30.0))
+
+    def test_sets_the_editing_manip_state_and_closed_hand(self):
+        self.mode.push(_Event((50.0, 25.0)))
+        self.assertEqual(
+            self.graph.getStringProperty("t_a.tag.tmanip_state"), ["editing"])
+        self.assertIn(Qt.CursorShape.ClosedHandCursor.value, self.cursors)
+
+    def test_nothing_grabbed_is_a_noop(self):
+        self.mode._currentEditNode = None
+        self.mode.push(_Event())
+        self.assertFalse(self.mode._editing)
+
+    def test_no_active_image_does_not_begin_editing(self):
+        self.mod.commands.renderedImages = lambda: []
+        self.mode.push(_Event())
+        self.assertFalse(self.mode._editing)
+
+
+class TestDragFreeTranslation(PointerTest):
+    """The path that used to raise ZeroDivisionError on every event."""
+
+    def setUp(self):
+        super().setUp()
+        self.mode.move(_Event((50.0, 25.0)))       # centre -> FreeTranslation
+        self.mode.push(_Event((50.0, 25.0)))
+
+    def test_corner_equals_centroid_on_a_free_grab(self):
+        """The precondition that made the diagonal degenerate."""
+        self.assertEqual(self.mode._control, self.mod.FreeTranslation)
+        self.assertEqual(tuple(self.mode._corner), tuple(self.mode._gc))
+
+    def test_drag_translates_instead_of_raising(self):
+        self.mode.drag(_Event((60.0, 25.0)))
+        self.assertNotEqual(self.translate(), [0.0, 0.0],
+                            "a free drag must move the tile")
+
+    def test_horizontal_drag_moves_only_x(self):
+        self.mode.drag(_Event((60.0, 25.0)))
+        x, y = self.translate()
+        self.assertGreater(x, 0.0)
+        self.assertAlmostEqual(y, 0.0)
+
+    def test_vertical_drag_moves_only_y(self):
+        self.mode.drag(_Event((50.0, 35.0)))
+        x, y = self.translate()
+        self.assertAlmostEqual(x, 0.0)
+        self.assertGreater(y, 0.0)
+
+    def test_scale_is_untouched_by_a_free_drag(self):
+        self.mode.drag(_Event((60.0, 30.0)))
+        self.assertEqual(self.scale(), [1.0, 1.0])
+
+    def test_the_down_point_advances_so_drags_accumulate(self):
+        self.mode.drag(_Event((60.0, 25.0)))
+        self.assertEqual(tuple(self.mode._downPoint), (60.0, 25.0))
+        first = list(self.translate())
+        self.mode.drag(_Event((70.0, 25.0)))
+        self.assertGreater(self.translate()[0], first[0])
+
+    def test_did_drag_is_recorded(self):
+        self.mode.drag(_Event((60.0, 25.0)))
+        self.assertTrue(self.mode._didDrag)
+
+
+class TestDragCornerScale(PointerTest):
+    def setUp(self):
+        super().setUp()
+        self.mode.move(_Event((2.0, 2.0)))        # bottom-left corner
+        self.mode.push(_Event((2.0, 2.0)))
+
+    def test_corner_grab_uses_the_diagonal(self):
+        self.assertNotEqual(tuple(self.mode._corner), tuple(self.mode._gc))
+
+    def test_dragging_a_corner_changes_the_scale(self):
+        self.mode.drag(_Event((10.0, 6.0)))
+        self.assertNotEqual(self.scale(), [1.0, 1.0])
+
+    def test_scale_never_goes_below_the_floor(self):
+        """Mu clamps with max(scale * scl, 0.01)."""
+        self.mode.drag(_Event((49.0, 24.0)))
+        self.assertGreaterEqual(self.scale()[0], 0.01)
+
+    def test_dragging_a_corner_also_translates(self):
+        self.mode.drag(_Event((10.0, 6.0)))
+        self.assertNotEqual(self.translate(), [0.0, 0.0])
+
+
+class TestRelease(PointerTest):
+    def test_release_after_an_edit_returns_to_hover(self):
+        self.mode.move(_Event((50.0, 25.0)))
+        self.mode.push(_Event((50.0, 25.0)))
+        self.mode.release(_Event())
+        self.assertEqual(
+            self.graph.getStringProperty("t_a.tag.tmanip_state"), ["hover"])
+        self.assertEqual(self.cursors[-1], Qt.CursorShape.OpenHandCursor.value)
+
+    def test_release_without_an_edit_restores_the_arrow(self):
+        self.mode.release(_Event())
+        self.assertEqual(self.cursors[-1], Qt.CursorShape.ArrowCursor.value)
+
+    def test_release_clears_the_editing_flags(self):
+        self.mode.move(_Event((50.0, 25.0)))
+        self.mode.push(_Event((50.0, 25.0)))
+        self.mode.drag(_Event((60.0, 25.0)))
+        self.mode.release(_Event())
+        self.assertFalse(self.mode._editing)
+        self.assertFalse(self.mode._didDrag)
+
+
+class TestDeactivate(PointerTest):
+    def test_deactivate_removes_the_tags(self):
+        """These tags get written into the saved session if they survive."""
+        self.graph.seedString("t_a.tag.tmanip", ["t_a"])
+        self.graph.seedString("t_a.tag.tmanip_state", ["hover"])
+        self.mode._active = True
+
+        self.mode.deactivate()
+
+        self.assertFalse(self.graph.propertyExists("t_a.tag.tmanip"))
+        self.assertFalse(self.graph.propertyExists("t_a.tag.tmanip_state"))
+
+    def test_deactivate_restores_the_arrow_cursor(self):
+        self.mode._active = True
+        self.mode.deactivate()
+        self.assertEqual(self.cursors[-1], Qt.CursorShape.ArrowCursor.value)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_transform_manip_render.py b/src/test/golden/session_manager/unit/test_transform_manip_render.py
new file mode 100644
index 000000000..8c2d7e01d
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_transform_manip_render.py
@@ -0,0 +1,237 @@
+"""Gate 5 — the manipulator's `render()` and the corner glyphs it draws.
+
+`render` is bound to RV's render event and issues immediate-mode OpenGL directly. It
+cannot be pinned by a golden: the manipulator only appears for a manually-laid-out
+layout with a tagged active image, and the harness cannot produce the pointer state
+that tags one. It also cannot be run against a real GL context here.
+
+What it can be run against is a recording context. Every `gl*`/`glu*` name the port
+pulled in with `from OpenGL.GL import *` lives in the module's own namespace, so
+swapping them for recorders turns `render()` into a call log — and the log is the
+interesting part, because the geometry decisions (which corners, which line widths,
+when a corner nub collapses) all live in the nested `drawCorners`.
+
+The whole body of `render` sits inside `except Exception: pass`, so a test that only
+called it and checked for no exception would pass against an empty method. Every test
+below asserts on what was drawn.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+
+
+class _Recorder:
+    """Stands in for one gl* entry point and logs its arguments."""
+
+    def __init__(self, log, name):
+        self._log = log
+        self._name = name
+
+    def __call__(self, *args):
+        self._log.append((self._name, args))
+
+
+class _RenderEvent:
+    def __init__(self, width=800, height=600, vflip=False):
+        self._domain = (width, height)
+        self._vflip = vflip
+
+    def domain(self):
+        return self._domain
+
+    def domainVerticalFlip(self):
+        return self._vflip
+
+
+SQUARE = [(0.0, 0.0), (100.0, 0.0), (100.0, 100.0), (0.0, 100.0)]
+
+
+class RenderTest(unittest.TestCase):
+    def setUp(self):
+        self.mod, self.graph = _rv_stubs.importPort("transform_manip")
+
+        self.calls = []
+        for name in list(vars(self.mod)):
+            if name.startswith(("gl", "glu")) and callable(getattr(self.mod, name)):
+                setattr(self.mod, name, _Recorder(self.calls, name))
+
+        self.mode = self.mod.TransformManip.__new__(self.mod.TransformManip)
+        self.mode._currentEditNode = "tform"
+        self.mode._gc = None
+        self.mode._editNodes = []
+
+        self.graph.addNode("layout", "RVLayoutGroup")
+        self.graph.viewNode = "layout"
+
+        self.setActiveImage(0)
+        self.mod.commands.imageGeometryByIndex = lambda index: SQUARE
+
+    def setActiveImage(self, index):
+        """activeImageIndex() reads the tmanip_state tag off the rendered images."""
+        if index is None:
+            self.mod.commands.renderedImages = lambda: []
+            return
+        self.mod.commands.renderedImages = lambda: [
+            {"index": index, "tags": [("tmanip_state", "active")]}
+        ]
+
+    def names(self):
+        return [n for n, _a in self.calls]
+
+    def named(self, name):
+        return [a for n, a in self.calls if n == name]
+
+    def render(self, event=None):
+        self.mode.render(event or _RenderEvent())
+
+
+class TestRenderGuards(RenderTest):
+    def test_nothing_is_drawn_without_an_edit_node(self):
+        self.mode._currentEditNode = None
+        self.render()
+        self.assertEqual(self.calls, [])
+
+    def test_nothing_is_drawn_without_an_active_image(self):
+        """The projection is set up first, so "nothing" means nothing after it."""
+        self.setActiveImage(None)
+        self.render()
+        self.assertNotIn("glBegin", self.names())
+
+    def test_an_active_image_draws(self):
+        self.render()
+        self.assertIn("glBegin", self.names())
+
+
+class TestRenderProjection(RenderTest):
+    def test_the_projection_matches_the_event_domain(self):
+        self.render(_RenderEvent(width=640, height=480))
+        self.assertEqual(self.named("gluOrtho2D"),
+                         [(0.0, 639, 0.0, 479)])
+
+    def test_a_vertically_flipped_domain_inverts_the_y_range(self):
+        """RV renders some domains upside down; the manip has to follow."""
+        self.render(_RenderEvent(width=640, height=480, vflip=True))
+        self.assertEqual(self.named("gluOrtho2D"),
+                         [(0.0, 639, 479, 0.0)])
+
+    def test_both_matrices_are_reset(self):
+        self.render()
+        self.assertGreaterEqual(self.names().count("glLoadIdentity"), 2)
+
+
+class TestRenderOutline(RenderTest):
+    def test_the_image_outline_traces_all_four_corners(self):
+        self.render()
+        loopStart = self.names().index("glBegin")
+        loopEnd = self.names().index("glEnd", loopStart)
+        verts = [a for n, a in self.calls[loopStart:loopEnd] if n == "glVertex2f"]
+        self.assertEqual([tuple(v) for v in verts],
+                         [(c[0], c[1]) for c in SQUARE])
+
+    def test_blending_is_enabled_and_disabled_again(self):
+        """A leaked GL_BLEND changes how everything drawn after this looks."""
+        self.assertNotIn(("glDisable", ("GL_BLEND",)), self.calls)
+        self.render()
+        enables = [a[0] for a in self.named("glEnable")]
+        disables = [a[0] for a in self.named("glDisable")]
+        self.assertIn(self.mod.GL_BLEND, enables)
+        self.assertIn(self.mod.GL_BLEND, disables)
+
+    def test_the_centre_glyph_is_placed_at_the_geometric_centre(self):
+        self.render()
+        self.assertEqual(self.named("glTranslatef")[0], (50.0, 50.0, 0.0))
+
+    def test_the_geometric_centre_is_cached_for_the_pointer_code(self):
+        """push/drag read _gc to decide whether the pointer grabbed the centre."""
+        self.render()
+        self.assertEqual(self.mode._gc, (50.0, 50.0))
+
+    def test_the_centre_glyph_is_drawn_twice_for_a_dark_outline(self):
+        self.render()
+        translates = self.named("glTranslatef")
+        self.assertEqual(translates[:2], [(50.0, 50.0, 0.0), (50.0, 50.0, 0.0)])
+
+
+class TestRenderCorners(RenderTest):
+    def cornerPasses(self):
+        """The two drawCorners passes, as lists of (start, end) line segments."""
+        passes = []
+        current = None
+        for name, args in self.calls:
+            if name == "glLineWidth" and args[0] in (8.0, 6.0):
+                current = []
+                passes.append(current)
+            elif name == "glLineWidth" and current is not None:
+                current = None
+            elif name == "glVertex2f" and current is not None:
+                current.append(args)
+        return passes
+
+    def test_both_passes_draw_every_corner(self):
+        """Four corners, two segments each, two vertices per segment."""
+        self.render()
+        passes = self.cornerPasses()
+        self.assertEqual(len(passes), 2)
+        for p in passes:
+            self.assertEqual(len(p), 16)
+
+    def test_the_dark_pass_is_wider_than_the_light_one(self):
+        """The 8pt black pass under the 6pt white one is what makes the nub read
+        against a bright image."""
+        self.render()
+        widths = [a[0] for a in self.named("glLineWidth")]
+        # widths[0] is the 2pt outline that precedes both corner passes.
+        self.assertEqual(widths[1:3], [8.0, 6.0])
+
+    def test_each_corner_draws_towards_both_of_its_neighbours(self):
+        self.render()
+        first = self.cornerPasses()[0]
+        # corner (0,0): neighbours are (0,100) and (100,0), so the two segments
+        # leave along +y and +x.
+        self.assertEqual(first[0], (0.0, 25.0))
+        self.assertEqual(first[2], (25.0, 0.0))
+
+    def test_a_side_shorter_than_the_nub_collapses_it(self):
+        """Without this the nubs from adjacent corners would overlap and the
+        outline would read as a solid bar."""
+        thin = [(0.0, 0.0), (10.0, 0.0), (10.0, 10.0), (0.0, 10.0)]
+        self.mod.commands.imageGeometryByIndex = lambda index: thin
+        self.render()
+        first = self.cornerPasses()[0]
+        self.assertEqual(first[0], (0.0, 0.0),
+                         "the nub must collapse onto the corner, not stick out")
+
+    def test_a_degenerate_geometry_is_swallowed(self):
+        """imageGeometryByIndex can return coincident corners mid-resize; the
+        divide by zero that follows is caught, as it is in Mu."""
+        self.mod.commands.imageGeometryByIndex = lambda index: [(0.0, 0.0)] * 4
+        self.render()
+        self.assertIn("glBegin", self.names())
+
+
+class TestActivate(RenderTest):
+    def test_activate_marks_the_mode_active(self):
+        self.mode._active = False
+        self.mode.findEditingNodes = lambda setStates=True: None
+        self.mode.activate()
+        self.assertTrue(self.mode._active)
+
+    def test_activate_rescans_for_editable_nodes(self):
+        """Without this the manip comes up bound to the previous view's nodes."""
+        calls = []
+        self.mode.findEditingNodes = lambda setStates=True: calls.append(setStates)
+        self.mode.activate()
+        self.assertEqual(len(calls), 1)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/src/test/golden/session_manager/unit/test_tree_view.py b/src/test/golden/session_manager/unit/test_tree_view.py
new file mode 100644
index 000000000..5167b2042
--- /dev/null
+++ b/src/test/golden/session_manager/unit/test_tree_view.py
@@ -0,0 +1,304 @@
+"""Gate 5 — NodeTreeView and InputsView drag/drop policy on the port itself.
+
+Drag and drop is the part of the package the golden scenarios reach least (they drive
+the command API), so these tests carry more of the weight. They construct the real
+widgets and feed them real QDragMoveEvent/QDropEvent objects rather than mocks, since
+what is under test is precisely which events get ignored.
+"""
+from __future__ import annotations
+
+import unittest
+
+import _rv_stubs
+
+SKIP = _rv_stubs.requiresPySide6()
+
+if not SKIP:
+    from PySide6 import QtCore, QtGui, QtWidgets
+    from PySide6.QtCore import Qt
+
+_app = None
+
+
+def setUpModule():
+    if SKIP:
+        raise unittest.SkipTest(SKIP)
+    global _app
+    _app = QtWidgets.QApplication.instance() or QtWidgets.QApplication([])
+
+
+class TreeViewTest(unittest.TestCase):
+    def setUp(self):
+        self.sm, self.graph = _rv_stubs.importPort("session_manager")
+        self.model = self.sm.NodeModel(None)
+        self.view = self.sm.NodeTreeView(None)
+        self.view.setModel(self.model)
+        self.view._viewModel = self.model
+
+    def tearDown(self):
+        self.view.setParent(None)
+
+    def _row(self, text, node):
+        item = QtGui.QStandardItem(text)
+        item.setData(node, Qt.UserRole + 2)
+        return item
+
+
+class TestInitialState(TreeViewTest):
+    def test_starts_with_no_drop_action_and_no_paths(self):
+        self.assertEqual(self.view._dropAction, Qt.IgnoreAction)
+        self.assertEqual(self.view._draggedNodePaths, [])
+        self.assertFalse(self.view._draggingNonFolders)
+
+    def test_sort_timer_is_single_shot(self):
+        self.assertTrue(self.view._sortTimer.isSingleShot())
+
+
+class TestSortFolderChildren(TreeViewTest):
+    def test_records_folder_groups_only(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.graph.addNode("seq", "RVSequenceGroup")
+
+        self.view.sortFolderChildren("folder")
+        self.view.sortFolderChildren("seq")
+
+        self.assertEqual(self.view._sortFolders, ["folder"])
+
+    def test_does_not_record_the_same_folder_twice(self):
+        self.graph.addNode("folder", "RVFolderGroup")
+        self.view.sortFolderChildren("folder")
+        self.view.sortFolderChildren("folder")
+        self.assertEqual(self.view._sortFolders, ["folder"])
+
+
+class TestSelectedNodePaths(TreeViewTest):
+    def test_path_runs_from_node_up_through_its_ancestors(self):
+        category = self._row("FOLDERS", "")
+        folder = self._row("Folder", "folderNode")
+        child = self._row("Src", "srcNode")
+        folder.appendRow([child])
+        category.appendRow([folder])
+        self.model.appendRow([category])
+
+        childIndex = self.model.indexFromItem(child)
+        self.view.selectionModel().select(
+            childIndex, QtCore.QItemSelectionModel.Select
+        )
+
+        self.assertEqual(self.view.selectedNodePaths(), [["srcNode", "folderNode", ""]])
+
+    def test_only_column_zero_contributes_a_path(self):
+        row = [self._row("Src", "srcNode"), QtGui.QStandardItem("status")]
+        self.model.appendRow(row)
+        self.view.selectionModel().select(
+            self.model.index(0, 1), QtCore.QItemSelectionModel.Select
+        )
+        self.assertEqual(self.view.selectedNodePaths(), [])
+
+    def test_no_selection_gives_no_paths(self):
+        self.model.appendRow([self._row("Src", "srcNode")])
+        self.assertEqual(self.view.selectedNodePaths(), [])
+
+
+class TestFilteredDraggedPaths(TreeViewTest):
+    def test_applies_the_predicate(self):
+        self.view._draggedNodePaths = [["a", "f"], ["b", ""], ["c", "f"]]
+        got = self.view.filteredDraggedPaths(lambda p: p[1] == "f")
+        self.assertEqual(got, [["a", "f"], ["c", "f"]])
+
+    def test_empty_when_nothing_is_being_dragged(self):
+        self.assertEqual(self.view.filteredDraggedPaths(lambda p: True), [])
+
+
+class TestSortFolders(TreeViewTest):
+    def test_assigns_sort_order_for_each_recorded_folder(self):
+        self.graph.addNode("folderNode", "RVFolderGroup")
+        folder = self._row("Folder", "folderNode")
+        for name in ("a", "b"):
+            folder.appendRow([self._row(name, name)])
+        self.model.appendRow([folder])
+
+        self.view._sortFolders = ["folderNode"]
+        self.view.sortFolders()
+
+        self.assertEqual(self.sm.sortKeyInParent("a", "folderNode"), 0)
+        self.assertEqual(self.sm.sortKeyInParent("b", "folderNode"), 1)
+        self.assertEqual(self.view._sortFolders, [],
+                         "the pending list must be cleared after sorting")
+
+    def test_unknown_folder_is_skipped_without_raising(self):
+        self.view._sortFolders = ["notInTheModel"]
+        self.view.sortFolders()
+        self.assertEqual(self.view._sortFolders, [])
+
+
+class TestDragMoveEvent(TreeViewTest):
+    """dragMoveEvent decides which drops are legal; each rejection is a rule."""
+
+    def _dragMove(self, pos, action=Qt.CopyAction):
+        mime = QtCore.QMimeData()
+        event = QtGui.QDragMoveEvent(
+            pos, action, mime, Qt.LeftButton, Qt.NoModifier
+        )
+        event.setDropAction(action)
+        event.accept()
+        self.view.dragMoveEvent(event)
+        return event
+
+    def test_drop_outside_any_row_is_ignored(self):
+        event = self._dragMove(QtCore.QPoint(5, 5))
+        self.assertFalse(event.isAccepted(),
+                         "an empty area has no item, so the drop must be ignored")
+
+    def test_drop_on_a_non_folder_sibling_is_ignored(self):
+        """Copying onto a sibling under the same parent is a reorder, not a copy."""
+        self.graph.addNode("parentSeq", "RVSequenceGroup")
+        self.graph.addNode("target", "RVSourceGroup")
+        self.graph.connections["target"] = []
+        self.graph.connections["parentSeq"] = ["target"]
+
+        parent = self._row("Seq", "parentSeq")
+        target = self._row("Target", "target")
+        parent.appendRow([target])
+        self.model.appendRow([parent])
+        self.view.expandAll()
+
+        # nodeConnections(target)[1] is the outputs list; make parentSeq an output.
+        self.graph.nodeConnections = lambda n, t=False: (
+            list(self.graph.connections.get(n, [])),
+            ["parentSeq"] if n == "target" else [],
+        )
+        self.view._draggedNodePaths = [["dragged", "parentSeq"]]
+        self.graph.addNode("dragged", "RVSourceGroup")
+
+        rect = self.view.visualRect(self.model.indexFromItem(target))
+        event = self._dragMove(rect.center())
+        self.assertFalse(event.isAccepted())
+
+    def test_drop_on_the_dragged_items_own_parent_is_ignored(self):
+        self.graph.addNode("folderNode", "RVFolderGroup")
+        self.graph.addNode("dragged", "RVSourceGroup")
+        folder = self._row("Folder", "folderNode")
+        self.model.appendRow([folder])
+
+        self.view._draggedNodePaths = [["dragged", "folderNode"]]
+
+        rect = self.view.visualRect(self.model.indexFromItem(folder))
+        event = self._dragMove(rect.center())
+        self.assertFalse(event.isAccepted(),
+                         "re-dropping into the parent it already sits in is a no-op")
+
+
+class TestDragEnterEvent(TreeViewTest):
+    def test_self_drag_records_paths_and_flags_non_folders(self):
+        self.graph.addNode("srcNode", "RVSourceGroup")
+        item = self._row("Src", "srcNode")
+        self.model.appendRow([item])
+        self.view.selectionModel().select(
+            self.model.indexFromItem(item), QtCore.QItemSelectionModel.Select
+        )
+
+        mime = QtCore.QMimeData()
+        event = QtGui.QDragEnterEvent(
+            QtCore.QPoint(1, 1), Qt.CopyAction, mime, Qt.LeftButton, Qt.NoModifier
+        )
+        # QDragEnterEvent has no source(); the view reads event.source(), so stand in.
+        event.source = lambda: self.view
+
+        self.view.dragEnterEvent(event)
+
+        self.assertEqual(self.view._draggedNodePaths, [["srcNode"]])
+        self.assertTrue(self.view._draggingNonFolders)
+
+    def test_dragging_only_folders_leaves_the_flag_clear(self):
+        self.graph.addNode("folderNode", "RVFolderGroup")
+        item = self._row("Folder", "folderNode")
+        self.model.appendRow([item])
+        self.view.selectionModel().select(
+            self.model.indexFromItem(item), QtCore.QItemSelectionModel.Select
+        )
+
+        mime = QtCore.QMimeData()
+        event = QtGui.QDragEnterEvent(
+            QtCore.QPoint(1, 1), Qt.CopyAction, mime, Qt.LeftButton, Qt.NoModifier
+        )
+        event.source = lambda: self.view
+        self.view.dragEnterEvent(event)
+
+        self.assertFalse(self.view._draggingNonFolders)
+
+    def test_folders_category_becomes_undroppable_for_non_folder_drags(self):
+        """H4: the FOLDERS section stops accepting drops when non-folders are dragged."""
+        self.graph.addNode("srcNode", "RVSourceGroup")
+        foldersItem = self._row("FOLDERS", "")
+        self.model.appendRow([foldersItem])
+        self.view._foldersItem = foldersItem
+
+        item = self._row("Src", "srcNode")
+        self.model.appendRow([item])
+        self.view.selectionModel().select(
+            self.model.indexFromItem(item), QtCore.QItemSelectionModel.Select
+        )
+
+        mime = QtCore.QMimeData()
+        event = QtGui.QDragEnterEvent(
+            QtCore.QPoint(1, 1), Qt.CopyAction, mime, Qt.LeftButton, Qt.NoModifier
+        )
+        event.source = lambda: self.view
+        self.view.dragEnterEvent(event)
+
+        self.assertFalse(bool(foldersItem.flags() & Qt.ItemIsDropEnabled))
+
+
+class TestInputsView(TreeViewTest):
+    def setUp(self):
+        super().setUp()
+        self.cleanupCalls = []
+        self.inputs = self.sm.InputsView(
+            self.view, None, dropCleanup=lambda: self.cleanupCalls.append(1)
+        )
+
+    def tearDown(self):
+        self.inputs.setParent(None)
+        super().tearDown()
+
+    def test_drag_from_the_tree_is_forced_to_copy(self):
+        """Recorded at the moment the port sets it.
+
+        QAbstractItemView.dragEnterEvent() runs afterwards and may set the action
+        again from the event's own proposed actions, so reading it back after the
+        call would test Qt rather than the override.
+        """
+        mime = QtCore.QMimeData()
+        event = QtGui.QDragEnterEvent(
+            QtCore.QPoint(1, 1), Qt.MoveAction, mime, Qt.LeftButton, Qt.NoModifier
+        )
+        event.source = lambda: self.view
+
+        seen = []
+        realSet = event.setDropAction
+        event.setDropAction = lambda a: (seen.append(a), realSet(a))[1]
+
+        self.inputs.dragEnterEvent(event)
+
+        self.assertIn(Qt.CopyAction, seen,
+                      "a drag out of the tree must never move the node")
+
+    def test_drag_from_elsewhere_keeps_its_action(self):
+        mime = QtCore.QMimeData()
+        event = QtGui.QDragEnterEvent(
+            QtCore.QPoint(1, 1), Qt.MoveAction, mime, Qt.LeftButton, Qt.NoModifier
+        )
+        event.source = lambda: None
+        event.setDropAction(Qt.MoveAction)
+
+        self.inputs.dragEnterEvent(event)
+
+        self.assertEqual(event.dropAction(), Qt.MoveAction)
+
+    def test_drop_timer_is_single_shot(self):
+        self.assertTrue(self.inputs._dropTimer.isSingleShot())
+
+
+if __name__ == "__main__":
+    unittest.main()