Video & Audio
Video to Audio
Extract the audio track from a video file.
A podcast recorded on video, a lecture you only need the sound from, a clip whose music you want without the picture — the video is ten times the file size the audio alone would be.
Where possible this reads the audio track directly out of the video file — the same demuxing your browser already does to play the file — which is instant, since nothing has to actually play. Some file and codec combinations do not expose the track that way, so it falls back to playing the file once in real time and recording the audio graph, the same technique the other audio and video tools here use.
How to use it
- Choose a video file.
- Pick WAV for a lossless, instantly-ready file, or WebM (Opus) for a smaller, compressed one.
- Set the sample rate, and if you chose WebM, the bitrate.
- Press Extract. If the fast path works this finishes immediately; if it falls back to real-time capture, it takes about as long as the video itself.
- Preview it, then press Download.
Questions
Why did this take as long as the video instead of finishing instantly?
That means the fast path (reading the audio track directly) was refused by your browser for this particular file, so the tool fell back to actually playing the video once and recording the sound — which necessarily takes real time. This is a property of the source file's codec, not something to fix by trying again.
Does this work on a video with no audio track?
No — there is nothing to extract. The tool will produce a silent or empty result, since it can only capture whatever sound the file actually contains.
Can I get an MP3?
No — browsers have no built-in MP3 encoder. WAV (lossless) and WebM/Opus (compressed, and supported almost everywhere audio is played) are what a browser can produce on its own without a large bundled library.