ComfyUI wrapper nodes for Mochi video generator

WORK IN PROGRESS

mochi_test.mp4

Can use flash_attn, pytorch attention (sdpa) or sage attention, sage being fastest.

Depending on frame count can fit under 20GB, VAE decoding is heavy and there is experimental tiled decoder (taken from CogVideoX -diffusers code) which allows higher frame counts, so far highest I've done is 97 with the default tile size 2x2 grid.

Models:

https://huggingface.co/Kijai/Mochi_preview_comfy/tree/main

model to: ComfyUI/models/diffusion_models/mochi

vae to: ComfyUI/models/vae/mochi

There is autodownload node (also will be normal loader node)