Remove the audio from a video
Strip the sound out of a video without touching the picture. The video stream is copied bit for bit, so it is instant and lossless.
- Runs in your browser
- Files are never uploaded
- Free, no account
First use downloads the 10 MB video engine from this site. After that it is cached and works offline. It is WebAssembly served from onthisdevice.com — no third-party CDN — and your file is still processed entirely on your own device.
How to remove the sound from a video
- Drop the video in. MP4, MOV, MKV, WebM and AVI are all handled.
- Optionally switch on Also strip metadata to clear titles, comments, timestamps and GPS tags at the same time.
- Press Remove audio. The video stream is copied rather than re-encoded, so even a large file finishes in seconds.
- Play the result to confirm it is silent, then download it.
Why this is lossless and fast
A container such as MP4 holds separate video and audio streams. Removing the sound means
rewriting the container with only the video stream inside — FFmpeg's -c:v copy -an.
No frame is ever decoded, so nothing is re-compressed, and the work is limited by how fast
your disk can move bytes rather than by your CPU.
That is the difference between this tool and a video editor: an editor will typically re-render the whole timeline, costing you both time and a generation of quality. Here the picture that comes out is byte-for-byte the picture that went in.
How much space you get back
| Audio in the source | Saved per minute | Saved in an hour |
|---|---|---|
| AAC 128 kbps stereo | ≈ 0.9 MB | ≈ 55 MB |
| AAC 256 kbps stereo | ≈ 1.8 MB | ≈ 110 MB |
| PCM 48 kHz 16-bit stereo | ≈ 11 MB | ≈ 660 MB |
When you would want a silent video
- Background loops on a website — browsers only autoplay muted video, and shipping the audio track wastes bandwidth.
- Privacy — a clip filmed in an office or hospital may show nothing sensitive while the conversation in the background does.
- Copyright — removing licensed music before uploading avoids automated content claims.
- Re-scoring — strip the original sound before dropping the clip into an edit with a new soundtrack.
- Smaller files for silent screen recordings that captured microphone noise you never wanted.
Keeping the audio instead
If you need the soundtrack as a separate file before deleting it, run extract audio from video first — in stream-copy mode it saves the original AAC or Opus track with no quality loss at all. To keep the sound but change the picture, see compress video or resize video.
Questions
Does muting reduce the video quality?
No. Only the audio track is dropped; the video stream is copied without being decoded, so the picture is bit-for-bit identical to the original.
How much smaller does the file get?
Roughly the size of the audio track — typically 1-2 MB per minute for AAC at 128-192 kbps. On a video-heavy file the saving is small; on a screen recording it can be significant.
Can I remove the metadata too?
Yes. The "Also strip metadata" switch clears titles, comments, creation timestamps and any GPS tags the camera embedded, which is worth doing before sharing a clip publicly.
What if the muted file will not play?
A few exotic containers refuse a plain stream copy. Turn on "Re-encode instead of copying" and the video is rebuilt as a standard H.264 MP4 that plays everywhere.