It is a free AI tool that separates the subject of a video from its background, frame by frame, without a green screen. You upload a clip, decide what the background becomes, and download the finished video.
There are three outputs. Transparent leaves an alpha channel so the footage can sit over anything. Color paints a flat backdrop in the exact hex you choose. Blur keeps the original scene but throws it out of focus, so attention stays on the person.
This is the automatic alternative to chroma keying. Instead of filming against green and pulling a key, the model recognizes the foreground directly, which is what lets it work on ordinary clips shot anywhere.