ComfyUI Tutorial: Generating 1+ Minute Long Videos Locally with MiniMax H3
crinklypaper · reddit · 2026-08-10
The author shares a complete workflow for generating 1+ minute long videos locally using ComfyUI and the MiniMax H3 model. The core node maintains character and style consistency by adding 22 frames from the previous clip as context, combined with reference images.
Workflow Highlights:
- Contextual Continuity: Uses custom nodes (like ComfyUI-MiniMaxH3-Contex-Loop) to prepend previous frames, ensuring natural scene transitions.
- Prompt Control: Sets a global prepended prompt for overall style and describes all characters in each scene's prompt to prevent character bleeding.
- Chunked Generation: Uses Claude to plan scenes ending on still transition beats. Supports reviewing and rerolling individual clips before automatically stitching them together with audio.
- Performance Optimization: Recommends workshopping prompts at a low resolution (0.5-1MP) before doing a final 1.5MP render (taking about 10 mins per 15-second clip).
Related event: MiniMax H3 Local Long Video Generation and Optimization Practices(7 posts)→
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