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ComfyDeploy: How ComfyUI-EmptyHunyuanLatent works in ComfyUI?

What is ComfyUI-EmptyHunyuanLatent?

Custom nodes for ComfyUI to generate empty latent space compatible with Hunyuan models for both image and video generation.

How to install it in ComfyDeploy?

Head over to the machine page

  1. Click on the "Create a new machine" button
  2. Select the Edit build steps
  3. Add a new step -> Custom Node
  4. Search for ComfyUI-EmptyHunyuanLatent and select it
  5. Close the build step dialig and then click on the "Save" button to rebuild the machine

ComfyUI Hunyuan Latent Nodes

Custom nodes for ComfyUI to generate empty latent space compatible with Hunyuan models for both image and video generation.

nodes

For video video

For Images image

Features

  • Fixed aspect ratio selection from common formats (1:1, 16:9, 9:16, etc.)
  • Support for both image and video latent generation
  • All dimensions are automatically adjusted to be multiples of 16
  • Maintains compatibility with Hunyuan model tensor format

Available Nodes

EmptyHunyuanLatentForImage

Creates an empty latent space for image generation with the following parameters:

  • resolution: Dropdown selection of common aspect ratios and resolutions
  • batch_size: Number of images to generate in parallel (default: 1)

EmptyHunyuanLatentForVideo

Creates an empty latent space for video generation with the following parameters:

  • resolution: Same resolution options as image node
  • frames: Number of frames to generate (default: 16, range: 1-256)
  • batch_size: Number of videos to generate in parallel (default: 1)

Supported Resolutions

The nodes support various standard resolutions with their aspect ratios:

  • Portrait formats:
    • 576x1024 (9:16)
    • 704x1408 (1:2)
    • 768x1344 (4:7)
    • And more...
  • Square format:
    • 1024x1024 (1:1)
  • Landscape formats:
    • 1024x576 (16:9)
    • 1344x704 (16:9)
    • 1408x704 (2:1)
    • And more...

Installation

Install from ComfyUI Manager

or

cd ComfyUI/custom_nodes

Clone this repository:

git clone https://github.com/ShmuelRonen/ComfyUI-Hunyuan-Latent.git

Restart ComfyUI

The nodes will appear in the node menu under:

  • latent for EmptyHunyuanLatentForImage
  • latent/video for EmptyHunyuanLatentForVideo

Usage

  1. Right-click in the ComfyUI workspace
  2. Navigate to:
    • latent → EmptyHunyuanLatentForImage for image generation
    • latent/video → EmptyHunyuanLatentForVideo for video generation
  3. Select desired resolution from the dropdown
  4. Connect to other nodes in your workflow

Node Output Format

Both nodes output a latent dictionary with the key "samples" containing a torch tensor with the following dimensions:

  • Image: [batch_size, 4, 1, height//8, width//8]
  • Video: [batch_size, 4, frames, height//8, width//8]

Requirements

  • ComfyUI
  • PyTorch
  • Hunyuan model dependencies

Latest Hunyuan models from HuggingFace

https://huggingface.co/Comfy-Org/HunyuanVideo_repackaged/tree/main/split_files/text_encoders

I recomended this hunyuan_video_720_cfgdistill_fp8_e4m3fn model for fast operation:

https://drive.google.com/file/d/1BvGHjR4Mb60ZPx9tqzA1AabAwZc47ctx/view?usp=sharing

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.