Remove audio from video
In your browser, no upload
MP4
sound removed · picture not re-encoded
Video
MP4 · MOV · M4V → MP4Specification
7 rows| Item | Value | Notes |
|---|---|---|
| Input | MP4, MOV, M4V | Read from the file itself, not its name |
| Output | MP4, picture only | The same picture in a new container |
| Length | Unchanged | Nothing is cut |
| Quality | Untouched | No frame is decoded or encoded |
| Sound | Removed | The sound track is left out of the new file |
| File size | No limit | Only the file’s index is read; the picture stays on disk |
| Processed in | This browser | Not sent to a server |
What happens
3What happens, and why
A video file keeps its picture and its sound as separate tracks, side by side. Muting is leaving the sound track out when the file is written again: the picture’s bytes are copied across untouched, so the result is the same video with nothing to hear. Nothing is decoded and nothing is encoded, which is why the badge says the file was not re-encoded.
This is not the same as turning the volume down or exporting silence. There is no silent track in the result — the file has no audio at all, which is what a platform that mutes uploads, or a phone that plays sound you did not mean to share, is looking at. The file gets smaller by roughly the size of the sound that was in it.
The running time, the frame rate, the resolution and the rotation are the source’s own. A recording from a phone stays portrait, because the box that says so is copied with the rest.
FAQ
4Does the picture lose quality
No. Not one frame is decoded. The picture in the new file is the same compressed bytes that were in the old one, so it is identical rather than merely close.
Can I get the sound back afterwards
Not from the muted file — the sound is not in it. Keep the original, or take the sound out separately first with the extract-audio page, which writes it to an .m4a without re-encoding either.
What if the video has no sound already
The result is the same picture, rewrapped, and the line under it says the file had no sound track to remove.
Is the video uploaded
No. The browser reads the file from your disk and writes the new one on this page. There is no upload endpoint on this site, so there is nowhere for the file to go.