ComfyUI Video-As-Prompt (WAN)

Big congratulations to the authors of the paper "Video-As-Prompt: Unified Semantic Control for Video Generation" for their excellent work. This repository is based on the original ByteDance code https://github.com/bytedance/Video-As-Prompt and provides ComfyUI custom nodes to run WAN Video-As-Prompt (VAP).

Overview

• node.py provides two nodes that load the WAN VAP pipeline and run sampling.
• Model sources can be local folders or Hugging Face repo ids.
• On CUDA, the loader attempts enable_sequential_cpu_offload() to reduce memory use.

Nodes

WANVAP_Load

Loads and caches the WAN VAP pipeline.

• Inputs
  • model_id (STRING): Hugging Face repo id or local path
  • device (auto/cuda/cpu): device hint (default: auto)
• Behavior
  • Resolves model_id from local folders / ComfyUI model folders / ckpts
  • Downloads from Hugging Face if not found locally
  • Reuses the same model_id + device pipeline from cache
• Output
  • WANVAP_PIPE

WANVAP_Sample

Generates frames from a reference image and reference video frames.

• Inputs
  • pipe (WANVAP_PIPE)
  • image (IMAGE): reference image
  • ref_video (IMAGE): reference video frames batch
  • prompt (STRING): text prompt
  • prompt_mot_ref (STRING): motion/semantic reference prompts, separated by |
• Optional
  • num_frames (INT, default 49)
  • height (INT, default 480)
  • width (INT, default 832)
  • num_inference_steps (INT, default 50)
  • frames_selection (evenly/first/random)
  • guidance_scale (FLOAT, default 5.0)
  • seed (INT, default 42)
• Output
  • frames (IMAGE): generated frames batch

Installation

1. Install in ComfyUI custom_nodes

cd <ComfyUI>
cd custom_nodes
git clone https://github.com/<your_name>/ComfyUI-Video-As-Prompt.git

2. Install dependencies in your ComfyUI Python environment

pip install -r requirements.txt

3. Prepare the model (choose one)

• Auto-download from Hugging Face
  • Set model_id to ByteDance/Video-As-Prompt-Wan2.1-14B
• Place locally
  • Put the model in one of the locations below:
    • ComfyUI/models/video_as_prompt/<model_name>/pretrained_weights/
    • ComfyUI/models/video-as-prompt/<model_name>/pretrained_weights/
    • ComfyUI/models/Video-As-Prompt/<model_name>/pretrained_weights/
    • ComfyUI/models/<model_name>/pretrained_weights/
    • ComfyUI/models/ckpts/<model_name>/pretrained_weights/
  • If pretrained_weights does not exist, the folder itself is used.

4. Restart ComfyUI

Usage

1. Add and connect WANVAP_Load and WANVAP_Sample.
2. Connect your reference image to image and your video frame batch to ref_video.
3. Use | to separate multiple prompts in prompt_mot_ref.
4. The output frames is a ComfyUI IMAGE batch.

Notes

• Model folders must include image_encoder, vae, and transformer.
• If you hit memory limits, reduce num_frames, height, or width.
• You can pass a local folder path or folder name as model_id.

Credits

• Original code: https://github.com/bytedance/Video-As-Prompt
• Paper: Video-As-Prompt: Unified Semantic Control for Video Generation