Ostris AI Toolkit now supports MiniMax H3 video-model training
RayHell666 · reddit · 2026-08-04
Ostris AI Toolkit now supports MiniMax H3 training.
- The Reddit post points to a Twitter update from Ostris AI.
- The reply notes that H3 supports text-to-video and first-frame image-to-video workflows, with joint audio.
- It also says the model is guidance-distilled, so guidance scale should stay at 1.
- Video output is fixed at 24 fps, and frame counts snap to a 17n+5 grid, which translates to lengths like 5s, 22, 39, 56, etc.
- The poster is mainly asking whether training will work on an RTX 5090.
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