ComfyUI MiniMax H3 Latent

MiniMax H3 Latent

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ComfyUI custom nodes for saving and loading MiniMax H3 AV latents.

MiniMax H3 latents are not plain tensors. They are NestedTensor values containing video and audio latent members, so ComfyUI's built-in Save Latent node can fail with:

'NestedTensor' object has no attribute 'contiguous'

This node pack adds H3-specific latent save/load nodes.

Nodes

• Save MiniMax H3 AV Latent

  • Saves H3 LATENT inputs, including NestedTensor video/audio members.
  • Files are written to the ComfyUI output folder with the .h3latent extension.

• Load MiniMax H3 AV Latent

  • Loads .h3latent files from the ComfyUI input folder.
  • Rebuilds the H3 NestedTensor before returning a LATENT.

Usage

Use Save MiniMax H3 AV Latent instead of the built-in Save Latent node for MiniMax H3 workflows.

To load a saved latent, place the .h3latent file in ComfyUI's input folder, then use Load MiniMax H3 AV Latent.

Format

The saved file stores each latent member separately:

latent_0  video latent
latent_1  audio latent

On load, files with multiple members are rebuilt as a ComfyUI NestedTensor.