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ComfyUI: Running HunyuanVideo with GGUF (Low VRAM)

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Demo summary

The video shows how to use the GGUF loader node to run a compressed version of HunyuanVideo 1.5, enabling video generation on GPUs with as little as 6GB of VRAM.

Step-by-step

  1. Open the Manager and select Custom Nodes Manager
  2. Search for and install 'ComfyUI-GGUF' by City96
  3. Double-click the workspace and search for 'Unet Loader GGUF'
  4. Press 'R' to refresh the model list
  5. Select the 'HunyuanVideo Q4 GGUF' from the dropdown menu
  6. Connect the GGUF node to the workflow, replacing the original Diffusion Model node
  7. Disable the original HunyuanVideo model node

Watch out for

  • The Q4 GGUF version results in noticeably lower quality, such as distorted hair details
  • The ComfyUI-GGUF custom node must be installed to access the GGUF loader

Tips

  • Use the GGUF version to enable video generation on GPUs with low VRAM (as low as 6GB)
  • Loading the GGUF model is significantly faster than loading the original model

Highlights

“That's pretty much it. That's the only thing you need to replace.”

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