🎥 Video Audio Extractor
Upload video files and extract audio tracks directly in your browser using Web Audio API. Download as WAV format with one click. Files are never uploaded to servers, ensuring privacy protection.
Related guide
Convert Audio Files in Your Browser: WAV or OGG, and Why OGG Takes Real Time
What a browser converter actually does to your file, why the WAV output is always 16-bit, why OGG encoding takes as long as the track plays, and how to pull sound out of a video instead.
Pulling the audio out of a video
This tool takes the soundtrack out of a video file and gives it back as an audio file you can play, edit or share on its own. That is the practical job it is for: you have a screen recording, a downloaded clip or a phone video, and you need the sound without the picture.
Load an MP4, WebM, AVI, MOV or MKV file up to two hundred megabytes and the browser decodes the audio track, draws a waveform from it and builds a downloadable WAV. Duration, resolution and file size are read from the video before you start, so you can confirm you have the right file.
Worth being clear about what it does not do: it does not extract a subtitle track, it does not keep the video, and it does not re-encode the audio to a compressed format. You get the sound, uncompressed, and nothing else.
What comes out
The download is a WAV file, 16-bit PCM, at the sample rate and channel count of the original — a stereo 48 kHz video gives a stereo 48 kHz WAV. The file is named after the video with the extension replaced, so clip.mp4 becomes clip.wav and lands next to whatever else you have downloaded.
Because WAV is uncompressed, expect roughly ten megabytes per minute of stereo audio and about half that for mono; a video with a 48 kHz stereo track costs slightly more than the 44.1 kHz figure. The result panel reports the sample rate, channel count, duration and final file size, so you can check before downloading rather than after.
The waveform preview is drawn from a mono mixdown of the track, purely so that stereo material displays as one readable shape. That mixdown is only for the picture — the exported file keeps its channels intact.
When it will not work
The browser has to be able to decode the audio in the file, and the honest limitation of an approach like this is that it depends on the container and codec being ones your browser supports. An MP4 with AAC audio is near-universally fine. AVI and MOV are containers rather than codecs, and older files in those wrappers may hold audio that the browser cannot decode at all — in that case the file will be rejected or the extraction will fail, and the fix is to remux or transcode the file in a desktop tool first, not to retry here.
There is no partial result: either the whole audio track decodes or you get an error. The work happens entirely on your machine, which is why a large video takes a little while — nothing is being uploaded, and nothing is stored anywhere afterwards.
FAQ
What format is the extracted audio?
WAV, 16-bit PCM, at the original sample rate and channel count. Uncompressed and lossless relative to the decoded source, but correspondingly large — about ten megabytes per minute for stereo at 44.1 kHz.
Which video formats are supported?
MP4, WebM, AVI, MOV and MKV, up to two hundred megabytes. MP4 with AAC audio is the combination that works most reliably, since every browser can decode it.
Why did my AVI or MOV file fail?
Those are containers rather than codecs, and they can hold audio in formats a browser has no decoder for — DivX and older MPEG audio inside an AVI are common examples. Remux or transcode the file with a desktop tool so the audio is in a format the browser understands, then try again.
Can I choose a compressed output format?
No, the export is WAV only. Keeping it uncompressed means the extraction step loses nothing; if you want a smaller file, convert the WAV afterwards with an encoder set up for the format you need.
Can I extract the audio from only part of the video?
Not here — the whole audio track is extracted in one pass and there is no range control. If you need a section of it, extract first and then trim the resulting WAV with the audio clipper.
Is the video uploaded to a server?
No. The file is read and decoded by your own browser and the WAV is built locally, so nothing is transmitted. The trade-off is that large videos take a moment, because your machine is doing all of the work.