MiniMax H3 video quality degrades with each ComfyUI extension — users hunt for fixes
Fenrir206 · reddit · 2026-11-11
A Reddit user reports that extending videos with MiniMax H3 in ComfyUI degrades quality from the second clip onward: contrast jumps and fine textures turn blocky or smeared like heavy JPEG compression, worsening with each extension, while motion and audio joins stay smooth and characters hold to reference images. The issue persists across official and community checkpoints, Turbo and regular, and various samplers/schedulers/steps.
They currently use tritant's MiniMax H3 Extender node (374 GitHub stars, chains clips with motion context, disk caching, dynamic image/audio references) and ask for workflows: fixed first-clip reference, latent refinement between clips, or a final refinement pass.
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