ComfyUI_Light_A_Video

Light-A-Video: Training-free Video Relighting via Progressive Light Fusion,you can use it in comfyUI

1. Installation

In the ./ComfyUI /custom_node directory, run the following:

git clone https://github.com/smthemex/ComfyUI_Light_A_Video.git

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2. Requirements

pip install -r requirements.txt

• if use sam2 in inpaint mode,need 'imageio' and 'ultralytics>=8.3.0'

3.Model

• any sd1.5 checkpoints

--   ComfyUI/models/checkpoints
    ├── any sd1.5 checkpoints

• iclight_sd15_fc.safetensors from here
• animatediff-motion-adapter-v1-5-3.safetensors from here

--   ComfyUI/models/controlnet
    ├── iclight_sd15_fc.safetensors
    ├── animatediff-motion-adapter-v1-5-3.safetensors  # rename or not 随便换个名字

• if use sam2

--   ComfyUI/models/Light_A_Video
    ├── sam2_b.pt  #会自动下载

4.Tips

• The middle prompts is only used for inpaint 中间的prompt是用于内绘模式的；
• mask_repo：use 'ZhengPeng7/BiRefNet' get mask，or keep it in empty to use sam2 to get mask 获取mask的方法要么填'ZhengPeng7/BiRefNet'，要么不填，会自动用sam2；

5.Example

Citation

@article{zhou2025light,
  title={Light-A-Video: Training-free Video Relighting via Progressive Light Fusion},
  author={Zhou, Yujie and Bu, Jiazi and Ling, Pengyang and Zhang, Pan and Wu, Tong and Huang, Qidong and Li, Jinsong and Dong, Xiaoyi and Zang, Yuhang and Cao, Yuhang and others},
  journal={arXiv preprint arXiv:2502.08590},
  year={2025}
}