How to Remove Audio from a Video
Whether you're stripping copyrighted music, cutting background noise, or preparing a silent loop for a website, muting a video doesn't have to mean a slow re-encode. Here's how to do it properly — and instantly.
Why you'd want to remove audio from a video
Removing audio isn't just for making a video silent for the sake of it. Some common, very practical reasons:
- Copyright strikes. Background music picked up by a phone mic (a TV playing, a car radio, a nearby speaker) can trigger automated copyright claims on YouTube, Instagram, or TikTok even if you never meant to include it.
- Silent website loops. Autoplaying background videos on a webpage (hero sections, product demos) are almost always muted by browsers anyway — shipping a video with no audio track at all is smaller and simpler than shipping one that's just muted in code.
- Replacing the soundtrack. If you're planning to add narration, a different music track, or captions instead, you need a clean video-only file to build on.
- Privacy. A video's audio can capture background conversations you didn't intend to share. Stripping it is a quick way to remove that risk before posting.
- File size. Audio is a small part of most video files, but every bit counts if you're trying to stay under an upload limit.
Remove audio in your browser (no upload, instant)
ConvertFlow's converter has a dedicated Remove audio toggle that does exactly this — it strips the audio track using a fast stream copy whenever the format allows it, so there's no quality loss and no waiting for a full re-encode.
Add your videoDrop your video file into the converter, or click to browse. Nothing uploads anywhere — it stays on your device.
Check "🔇 Remove audio"You'll find this toggle next to the Speed and Resolution controls. Turn it on.
Pick your output formatMP4 is the safest universal choice, but MOV, MKV, and most other video formats work the same way.
Click ConvertFor compatible formats, this finishes almost instantly since it's a stream copy, not a re-encode. Download the result straight to your device.
Try it now
Free, private, and runs entirely in your browser — no signup, no upload.
Prefer the command line? Use FFmpeg directly
If you're comfortable with a terminal and have FFmpeg installed locally, the same trick — copying the video stream while dropping audio — is a single command:
ffmpeg -i input.mp4 -c:v copy -an output.mp4Here's what each part does:
-c:v copy— copies the video stream exactly as-is, with no re-encoding, so quality is untouched and it runs in seconds regardless of file length.-an— tells FFmpeg to drop the audio stream entirely rather than including a silent one.
If you only want to silence the audio rather than remove the track completely (useful if some downstream tool expects an audio stream to exist), replace -an with an audio filter instead:
ffmpeg -i input.mp4 -c:v copy -af "volume=0" output.mp4Note that this second version isn't a pure stream copy on the audio side, so it re-encodes the (now silent) audio track — still fast, but not quite as instant as fully removing it.
When it can't be instant
Stream copying only works when the output container supports the same video codec as your source. If you're also resizing the video, or converting into a format that needs a different codec (for example, converting into WebM or GIF), FFmpeg has to fully re-encode the video frames — audio removal still happens, it just won't be instant in that case. ConvertFlow automatically detects this and falls back to a full re-encode only when necessary, using the fastest settings available.