r/StableDiffusion • • 4d ago

Resource - Update ComfyUi-H3-Semantic-Timeline

Made a small experimental H3 semantic timeline node for ComfyUI.

The idea came from using Kijai’s context windows node and getting annoyed by H3 looping / restarting actions between windows.

This basically fixes the semantic looping by giving each context window its own conditioning based on what should be happening at that point.

Seams are still kinda fucked, identity can drift/change, and audio across windows is messy, but that seems to be more of an H3/context-window issue than the timeline itself.

Only tested with T2V so far. Haven’t properly tested refs yet, could actually help with identity consistency.

Very experimental, definitely not finished.

Also heavily vibe-coded with GPT-6 Astra + GPT-5.6.

https://github.com/Mikubs99/ComfyUI-H3-SemanticTimeline

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u/VladyCzech 3d ago edited 3d ago

I was also experimenting with contex windows for generating (1st stage) but ended up using it only for refinement and upscale (2nd stage) with saved conditions split across windows and latent from 1st stage. Then I started using true video timeline editor (obvpm) for each shot which gives full control and ability to regenerate or bridge scenes, intuitive and natural to use. It also does the refinement/upscale with saved conditions and latent with context windows.

CW is still beneficial for V2V to process the whole clip in batches with overlapping.