Extract Audio From Video

How to use the extract audio from video

1. Open the video.
2. Choose mono if it is speech.
3. Extract and download the WAV.

About this tool

The browser already decodes the audio inside a video container, so extracting it needs no demuxer — the file is decoded and the samples written out as WAV.

The output is WAV because that is the only audio format a browser can reliably encode, and it is not small: roughly 10 MB a minute, so an hour of audio is around 600 MB. For speech, mixing down to mono halves that with no meaningful loss. If you need an MP3, compress the WAV afterwards in an audio editor.

If a file produces no audio at all, it either has no audio track or uses a codec this browser cannot decode — the tool distinguishes that from a general failure rather than reporting a vague error.

There is no FFmpeg here. Browsers already decode the video formats they can play, so reading frames, metadata and audio needs no extra codec — which keeps these tools a few kilobytes instead of a thirty-megabyte download. The trade-off is honest: anything requiring a full re-encode is not offered rather than done badly.

Common uses

• Getting the audio from a recorded talk or interview.
• Pulling a soundtrack out for editing.
• Preparing audio for transcription.

Frequently asked questions

Can I get an MP3 instead?

Not here. Browsers decode MP3 but cannot encode it without a bundled codec several times the size of this site. Convert the WAV afterwards if you need one.

Why is the WAV so large?

It is uncompressed — about 10 MB a minute at CD quality. Mono halves it, which is usually fine for speech.

Why did nothing come out?

Either the file has no audio track, or its audio codec is one this browser cannot decode. The message tells you which case it is.