What it does
Set the background, process the whole clip, then play and download the finished video.
LOCAL VIDEO BACKGROUNDBETA
Replace a portrait video background in your browser.
Set the background, process the whole clip, then play and download the finished video.
Video frames, audio merge and format conversion stay on this device; only public runtime files are downloaded.
Frames are processed first and then rebuilt on the source timeline, so processing speed does not change playback speed.
When present, the original audio track is merged back into the processed video.
PRACTICAL GUIDE
What to know about this tool
How to use it
- Choose video
- Background
- Process
- Download video
Formats and limits
- MP4, WebM or MOV · up to 100 MB · up to 1 minute
- Frames are processed first and then rebuilt on the source timeline, so processing speed does not change playback speed.
- When present, the original audio track is merged back into the processed video.
- Transparent output uses WebM because standard MP4 and MOV output does not retain alpha.
Privacy
Video frames, audio merge and format conversion stay on this device; only public runtime files are downloaded.