Remove the audio from a video

Worked example

Removing audio does not require touching the video at all, so this is both instant and lossless.

The equivalent command

ffmpeg -i holiday-clip.mp4 -an -c:v copy -movflags +faststart -threads 1 -y out-holiday-clip.mp4

This is exactly what runs in the browser. Copy it to run the same job locally on a file too large for a tab.

Why it matters

There is no reason to re-encode the picture just to drop a sound track. The video packets are copied straight into the new file and only the audio stream is left out, which means the result is bit-for-bit identical in picture quality and finishes as fast as the file can be read.

What this needs

A 30.7 MB FFmpeg download, cached by your browser after the first time. Nothing is downloaded until you click.