MiniMax H3 video workflow: 8-step sampling, 2-step upscale, and a first-frame darkening fix
Major_Specific_23 · reddit · 2026-09-03
A Reddit user shares a hands-on ComfyUI workflow for MiniMax H3 video generation: ddim/beta with 8 steps, then a 2-step upscale at 0.25 denoise, using the ComfyUI-MiniMax-H3-PDD-Acc node after testing many turbo LoRAs. He combines a community pruned/refdelta fused hybrid model with an image+reference-to-video node. To fix the first frame darkening and losing quality (possibly a MiniMax VAE or ComfyUI issue), he had sol ultra update the node to pass the previous video latent instead of the image. Prompts are generated with DeepSeek Flash, which he notes is completely uncensored via API.
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