Remove the background from a video

No. Each frame is examined and redrawn in this tab, and the video is encoded by your browser. Recordings of your home, your children or your office never leave your device.

One or two people, facing the camera, lit from the front: video calls, talking-head clips, presentations, dance videos. The person finder is built for people, so pets and objects are treated as background, and fine hair or fast hand movements can blur at the edge. The Fast option is rougher still around hair and in dim light, where it can lose the person altogether, so keep the default for those.

Not directly, since MP4 has no transparency. Choose Colour and keep the green, then use the chroma key effect in Premiere, DaVinci Resolve, CapCut or OBS to make it transparent there.

Yes. Only the picture is redrawn; the soundtrack is copied into the new video.

Every frame is examined and redrawn on your device, so it can take longer than the video plays. The default finder, Better edges, runs on the graphics chip where the browser offers one. On a MacBook Pro with an M3 Max chip a 10-second 30 fps clip took about 6 seconds in Chrome and about 10 seconds in Safari, so a 10-minute clip would take about 6 to 11 minutes (we timed 10 seconds, not the longer clip). Where the browser cannot use a graphics chip (software rendering, some virtual machines and browser settings) it falls back to the processor, and the same clip took about 55 seconds, so a 10-minute clip would take about an hour. The Fast option runs on the processor and took about 5 seconds in Chrome and 8 to 9 seconds in Safari on the same clip, so it is only a little quicker than Better edges on a graphics chip and several times quicker than Better edges without one, but its edges are rougher around hair and in dim light. Phones vary and we have not benchmarked one with the graphics chip: a single run on an iPhone in Safari, before this change, took roughly 5 to 10 minutes for a 2-minute video, which is a rough guide, not a measurement. Slower devices take longer, and so do longer or 60 fps videos. The page shows the time left once it is running; keep the tab open while it works.

The open-source MediaPipe engine that finds the person tries to send its own usage log to a Google address. This site’s security policy makes the browser refuse that request, so it fails and you see an error in the console. Your video is not part of it and it never leaves your device.