Mute Video (Remove Audio)
Take the sound out of a video in seconds, with the picture copied untouched.
Audio to remove
What will happen
About the Mute Video (Remove Audio)
Remove the audio from a video so it plays silently — for example before posting a clip with background chatter, traffic noise or music you have no rights to, or when you only need the picture for a presentation or a website background.
The tool copies the video data exactly as it is and simply leaves the audio out, so nothing is re-encoded: the picture quality, resolution, frame rate, rotation and the file format (MP4, MOV, MKV or WebM) stay the same, the title, recording date and device details are kept, and it is quick even for long videos, because nothing has to be encoded. Files with several audio tracks (for example one per language) can keep the tracks you choose. Everything runs in your browser; the video is never uploaded.
How to use it
- Drop a video on the box or click Choose a video. The page lists its video and audio tracks.
- If the file has more than one audio track, untick any track you want to keep; all ticked tracks are removed.
- Check What will happen (video copied, audio removed) and press Remove audio.
- Play the silent result on the page and press Download.
Examples
IMG_2041.MOV · 0:48 · HEVC + AAC · 92 MB
IMG_2041-muted.mov · HEVC copied unchanged · about 1 MB smaller (the AAC audio was about 160 kbps)
film.mkv · H.264 · audio tracks: English (AC-3 5.1), Hindi (AAC stereo)
Untick Hindi → film-muted.mkv with only the Hindi track; the video is copied as it is
hero.mp4 · H.264 + AAC
hero-muted.mp4 with no audio track, about the size of the original minus its sound
In your HTML, still add the muted attribute to the <video> tag: browsers allow muted videos to play automatically.
Why nothing is re-encoded
A video file is a container holding separate tracks: one for the picture and one or more for sound. Removing audio only means writing the same picture data into a new container without the audio track, so the video is copied byte for byte — no quality loss and no waiting for an encoder. The new file is smaller by roughly the size of the removed audio, which is usually a small share of the total (128 kbps of AAC is about 1 MB per minute).
What is kept
- The video track, unchanged, with its codec (H.264, HEVC, VP9, AV1, ProRes …), resolution, frame rate and rotation
- The audio tracks you chose to keep, copied unchanged with their language and name
- The container: MP4 stays MP4, MOV stays MOV, MKV stays MKV and WebM stays WebM; MPEG-TS recordings (.ts, .mts, .m2ts) are saved as MP4
- Title, recording date and device metadata, including Apple’s QuickTime keys for MP4 and MOV
Limitations
- It removes whole audio tracks; muting only one part of a video is not possible here.
- Subtitle tracks and chapters are not carried over. For MKV files with subtitles, MKV to MP4 keeps text subtitles.
- MKV and WebM videos that store a rotation are saved as MP4, because MKV and WebM players ignore that rotation.
- Very large files are held in memory until you download the result, unless you use “Save straight to a file” (Chrome or Edge on a computer).
- Old formats such as AVI, WMV and FLV cannot be read in the browser; convert them to MP4 with a desktop app first.
Privacy
Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.
Frequently asked questions
Does removing the audio lower the video quality?
No. The picture is copied exactly as it is stored in the original, so the quality, resolution and frame rate are identical.
Can I remove just one audio track?
Yes. When a file has several audio tracks (common in MKV films and some MP4s), each one is listed with its language and codec; untick the tracks you want to keep and only the ticked ones are removed.
Why is the muted file only a little smaller?
Because audio takes up much less space than video. Stereo AAC at 128 kbps is about 1 MB per minute, while a 1080p phone video usually takes tens of megabytes per minute. To make the file much smaller, use the Video Compressor.
Does it work on a phone?
Yes, in current mobile browsers. Because nothing is re-encoded, it even works in browsers that have no video encoder (no WebCodecs support).
Is my video uploaded anywhere?
No. The file is read and rewritten inside your browser, and the result is saved straight to your device.