ComfyUI backend PR Comfy-Org/ComfyUI#15579 (commit 0f1fa67a, 2026-08-15) added a task_type option to the Seedance 2.5 API nodes in comfy_api_nodes/nodes_bytedance.py:
- New
task_type widget with options auto, reference, edit, extend
extend enables video extension: the prompt can say 'extend forward', 'extend backward', or 'continue', and the aspect ratio / duration widgets are ignorededit behaves like the existing video_editing mode
The docs page tutorials/partner-nodes/bytedance/seedance-2-5.mdx documents the T2V / FLF2V / R2V / Video editing workflows but does not mention the new task_type widget or the video extension capability.
No new workflow template exists yet in workflow_templates (checked 2026-08-17: templates still use the old video_editing toggle). Suggested fix once a template lands: add a Video extension workflow section to the Seedance 2.5 page (EN + zh/ja/ko), or at minimum mention the task_type widget options in the Video editing section.
ComfyUI backend PR Comfy-Org/ComfyUI#15579 (commit 0f1fa67a, 2026-08-15) added a
task_typeoption to the Seedance 2.5 API nodes incomfy_api_nodes/nodes_bytedance.py:task_typewidget with optionsauto,reference,edit,extendextendenables video extension: the prompt can say 'extend forward', 'extend backward', or 'continue', and the aspect ratio / duration widgets are ignorededitbehaves like the existingvideo_editingmodeThe docs page
tutorials/partner-nodes/bytedance/seedance-2-5.mdxdocuments the T2V / FLF2V / R2V / Video editing workflows but does not mention the newtask_typewidget or the video extension capability.No new workflow template exists yet in workflow_templates (checked 2026-08-17: templates still use the old
video_editingtoggle). Suggested fix once a template lands: add a Video extension workflow section to the Seedance 2.5 page (EN + zh/ja/ko), or at minimum mention thetask_typewidget options in the Video editing section.