Video to audio,
on your own machine.
Pull the audio track out of a video as lossless WAV or compact MP3. Decoded and encoded in your browser; the video never leaves your device.
free, always
MP4, MOV, M4V, WebM. The file never leaves your computer; conversion happens in this tab.
Choose a fileWhy it runs in your browser
Uploading a 400 MB video to extract a 4 MB audio track is a waste of your time and ours. Your computer already knows how to decode the file.
The browser reads the audio track out of the video with the same engine it uses to play it.
MP3 is encoded in JavaScript on your machine. Larger files take longer, but nothing is sent anywhere.
A normal download from your own tab. Close the page and the data is gone.
Extracting audio from video, the boring way
A video to audio converter does one small thing: it throws away the pictures. It should not need an account, a queue or an upload. This page decodes the file with your browser's media engine, writes a WAV (or encodes an MP3) and gives it back to you.
Typical reasons: you recorded a talk on a camera and want the audio for a podcast; you need a clean track to transcribe; you want to hear your own voice-over against a new cut; you have a screen recording and only the narration matters.
Limits worth knowing
- Browser codecs only; MP4/MOV with AAC audio are safe.
- Whole file is held in memory; very large files can fail on low-memory devices.
- Stereo and mono are preserved; surround is downmixed to stereo.
Related
MP4 to MP3 defaults to MP3. For captions from the audio, transcribe audio to text.
Questions
WAV or MP3?
WAV is a lossless copy of the decoded audio and is large (about 10 MB a minute for stereo). Choose it if you are going to edit the audio further. MP3 at 192 kbps is small and fine for listening, sharing and transcription.
Is my video uploaded?
No. Decoding and encoding happen in your browser tab. You can disconnect from the internet after the page loads and the conversion still works.
Why did my file fail to decode?
Browsers only decode codecs they can play. MP4 and MOV with AAC audio work everywhere; MKV, AVI and some camera formats may not. Firefox cannot decode some AAC variants. Try Chrome or Safari, or convert the file to MP4 first.
Is there a file size limit?
The whole file is read into memory, so very large files (several GB) can fail on phones or low-memory laptops. Anything under an hour of 1080p is normally fine on a desktop.
Does the quality drop?
MP3 at 192 kbps is transparent for speech and most music. Choose 320 kbps for music you care about, or WAV for a lossless copy of the decoded audio.