Fix FFMPEG issue (#222)

* ➕ Add imageio-ffmpeg

* 👽 Specify the ImageIO FFMPEG backend which should install the appropriate platform-specific binary

* ⚰️ Drop FFMPEG installation during CI

* ⬆️ Upgrade dependencies

* 🚨 Fix mypy type errors for external library

Author: jemrobinson

.github/workflows/test_code.yaml

@@ -36,9 +36,6 @@ jobs:
         uses: astral-sh/setup-uv@v6
         with:
           version: "0.8.3"
-      - name: Install ffmpeg (so matplotlib can call it)
-        run: |
-          sudo apt-get update && sudo apt-get install -y ffmpeg
       - name: Run pytest
         run: uv run --group dev pytest
       - name: Run mypy

icenet_mp/plugins.py

@@ -2,6 +2,7 @@
 
 from icenet_mp.data_processors.filters import register_filters
 from icenet_mp.data_processors.sources import register_sources
+from icenet_mp.visualisations import register_animation_backends
 from icenet_mp.xpu import register_accelerators
 
 logger = getLogger(__name__)
@@ -11,5 +12,6 @@ def register_plugins() -> None:
     """Register all plugins."""
     logger.debug("Registering plugins with external libraries...")
     register_accelerators()
+    register_animation_backends()
     register_filters()
     register_sources()

icenet_mp/visualisations/__init__.py

@@ -1,6 +1,15 @@
+from imageio_ffmpeg import get_ffmpeg_exe
+from matplotlib import rcParams
+
 from .helpers import DEFAULT_SIC_SPEC
 from .plotter import Plotter
 
+
+def register_animation_backends() -> None:
+    """Register the ImageIO FFMPEG animation backend."""
+    rcParams["animation.ffmpeg_path"] = get_ffmpeg_exe()
+
+
 __all__ = [
     "DEFAULT_SIC_SPEC",
     "Plotter",

pyproject.toml

@@ -25,9 +25,10 @@ dependencies = [
     "anemoi-utils>=0.4.42",
     "cachetools>=6.1.0",
     "cdsapi>=0.7.6",
-    "eccodeslib>=2.40.0", # indirect dependency of icenet that is not automatically installed
+    "eccodeslib>=2.40.0,<=2.45.3,!=2.42.0,!=2.43.0,!=2.44.0.2", # indirect dependency of icenet that is not automatically installed
     "hydra-core>=1.3.2",
     "icenet==0.2.7", # newer versions require netCDF4<1.6.1 which does not work on macOS 15
+    "imageio-ffmpeg>=0.6.0",
     "jaxtyping>=0.3.2",
     "lightning>=2.5.1",
     "matplotlib>=3.10.3",
@@ -78,6 +79,7 @@ module = [
     "anemoi.utils.*",
     "earthkit.*",
     "icenet.data.sic.*",
+    "imageio_ffmpeg.*",
     "zarr.*",
 ]
 ignore_missing_imports = true
@@ -91,16 +93,11 @@ addopts = [
 testpaths = ["tests"]
 norecursedirs = [
     ".git",
-    ".venv",
-    "venv",
-    "__pycache__",
-    ".pytest_cache",
     ".mypy_cache",
-    "node_modules",
-    ".idea",
+    ".pytest_cache",
+    ".ruff_cache",
+    ".venv",
     ".vscode",
-    "data",
-    "raw_input_*",
 ]
 
 [tool.ruff]