Open Video Relight relights real video in ComfyUI from a 3D light stage, with Qwen-Image 2.1 and MiniMax H3
Open Video Relight is a free, open-source ComfyUI workflow that changes the lighting of real footage while keeping the people and their performance. You place and move lights on a sphere around the subject, Qwen-Image 2.1 relights a few keyframes, and MiniMax H3 carries that light through the clip.
What it does
A vision model (Qwen3-VL 8B) reads the clip's lights, openings, surfaces and which way people face, and puts the lights it finds on the stage, where you keep, change, remove or add lights, set how each one moves and describe it in your own words. It then plans two or three keyframes and writes the prompts, Qwen-Image 2.1 relights those frames (you can check and redraw any of them), and MiniMax H3 uses the original clip as reference and the keyframes as guides. The README examples include moving magenta and cyan stage lights on a dance floor, a flat office turned into low evening sun, a new rainy neon background, and taking only the light from a reference image.
Results and limits
The author tested it on an RTX 5070 Ti Laptop GPU with 12 GB of VRAM: keyframes take about a minute and a full 2 to 3 second clip 2 to 4.5 minutes. Compared with plain MiniMax H3 on the same clip and seed, the README shows plain H3 changing the colour of the whole frame at once, while the stage lets each light follow its own path.
Worth knowing
Needs ComfyUI with the built-in MiniMax H3 and Qwen-Image 2.1 nodes (tested on ComfyUI Desktop 0.41.1), 12 GB of VRAM, 48 GB of RAM recommended (the video step uses about 37 GB) and about 56 GB of models; no other custom nodes are needed. H3 runs at 0.5 megapixels and is scaled back up, so results are soft, lights move only in straight paths, longer clips are untested, and Qwen can change small details such as hair. The code is MIT; Qwen-Image 2.1 is under the Qwen research licence and MiniMax H3 under its community licence (which excludes the EU, UK, South Korea and US).