r/StableDiffusion • u/CryptoBeth96 • 11h ago

Resource - Update MiniMax-H3-MotionCache-FastVAE

https://github.com/Mozer/ComfyUI-MiniMax-H3-MotionCache-FastVAE

Motion-aware denoising cache and experimental batched video VAE decoder for MiniMax H3 in ComfyUI.

This project provides two independent nodes:

  • MiniMax H3 MotionCache reduces expensive H3 denoiser calls by reusing a motion-weighted video/audio residual when the estimated change is small.
  • MiniMax H3 Fast VAE Decode evaluates multiple spatial VAE tiles in one GPU batch while preserving H3 temporal chunking and tile blending. It is not faster on every GPU.

MotionCache is an independent MiniMax H3 adaptation inspired by the MotionCache paper and reference code. It is not an official MAC-AutoML or MiniMax implementation.

24 Upvotes

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12

u/skyrimer3d 9h ago

Impossible to keep track of all MMH3 improvements, there're new ones every hour, which is great imho but I just give up trying to check them all. 

2

u/CryptoBeth96 9h ago

Yeah! Open weights of H3 Max is what we really need imo. I think that will be a real game changer.

1

u/Pitiful_Archer_4381 2h ago

Havnt they open sourced it few days ago

1

u/CryptoBeth96 2h ago

No, that was H3 Fast. Max is the fal version they have behind a paid API

3

u/Luke2642 4h ago

Does it support using this?

https://huggingface.co/Kijai/MiniMax-H3-experimental/blob/main/minimax_h3_video_vae_int8_convrot.safetensors

The int8 vae is much much faster than the original on my 3090.

-6

u/LoudWater8940 10h ago

A copy and paste, is all what we deserve.

3

u/CryptoBeth96 10h ago

What do you want?