Mute Video and Remove Audio
Strip the sound from a video in your browser without re-encoding, with no watermark and no upload.
- Runs in your browser, files never leave your device
- Free, open source, no account, no ads
- Works offline after the first visit
Remove the audio track from a video
Drop a video here or choose a file
MP4, MOV, M4V, WebM or MKV, up to about 2 GB. Your video never leaves this computer.
This browser cannot preview this video (common with iPhone HEVC files). You can still remove the audio and download it.
- Size
- Duration
- Checking…
- Resolution
- Checking…
- Audio
- Checking…
Enter starts · Space plays the preview
How it works
- Choose a video. Drop an MP4, MOV, M4V, WebM or MKV file. The page reads it on your device and shows its duration, resolution and whether it has sound.
- Press Remove audio. ffmpeg, compiled to WebAssembly, copies the video stream untouched into a new file and leaves the audio out. Nothing is re-encoded, so quality stays identical.
- Check and download. Play the silent result right on the page, compare sizes, then save it with “-muted” added to the original name.
Questions, answered
Are my files uploaded anywhere?
No. Mute Video and Remove Audio runs entirely in your browser. Your video is read on your device, processed by ffmpeg compiled to WebAssembly, and never sent to a server. You can disconnect from the internet and it keeps working.
Will removing the audio lower the video quality?
No. The video stream is copied bit for bit into a new container (“stream copy”), not re-encoded. Resolution, frame rate, variable frame rate timing and rotation stay as they were, and the file shrinks only by the size of the audio. There is no watermark.
Is there a file size limit, and why is it slow on big files?
The muted copy is built in browser memory, so the practical ceiling is about 2 GB, and you get a warning above 500 MB. Phones, especially Safari on iPhone, have less memory and may fail sooner. The tool uses the single-threaded ffmpeg build because GitHub Pages cannot enable the multi-threaded one, so very large files take longer than desktop apps.
What happens to subtitles, and can I keep the audio silent instead?
Subtitle tracks are kept when the container allows it; if copying them fails, the tool retries with only the video and tells you. Data tracks such as timecodes are dropped. There is no “silent audio track” option: the audio is removed entirely, which is what social sites and editors expect from a muted clip.
Is it really free, and does it work offline?
Yes. It is open source under the MIT license, with no account, no limits and no ads. After your first visit the page is cached by a service worker, so it loads without a connection, and you can install it from your browser's menu as an app. If it saves you a paid subscription, you can say thanks on Ko-fi.
Was this written by AI?
Yes. Mute Video and Remove Audio was generated by Claude Code from a written specification inside an automated pipeline, with a test suite that runs in a real browser. The full source is on GitHub, so you can read every line before you trust it with your files.
Built by one person, given away for free
Mute Video and Remove Audio is a free alternative to paid tools like Clideo Mute Video and Kapwing Remove Audio from Video. If it earns a place in your bookmarks, a coffee keeps the updates coming.
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