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Video → Audio

Extract the audio from a video and download it as WAV or MP3. Everything runs in this tab with FFmpeg (WebAssembly) — no upload, no server, your file never leaves this machine.

Drop video files hereor click to browse — you can add more while a batch runs.MP4, MOV, MKV, WebM, AVI, FLV, TS and more. Audio files work too.
Output format

Files are processed one at a time, entirely in browser memory, so a single video over ~2 GB may fail. The first file loads the ~31 MB FFmpeg core (cached by the browser afterwards). Audio is taken from the first audio track and re-encoded — WAV keeps the source sample rate, MP3 is 192 kbps.

About this tool

WAV or MP3?

The choice is between a file that is faithful and a file that is small, and only you know which the job needs.

  • WAV — uncompressed 16-bit PCM at the source’s own sample rate. Lossless, so nothing is thrown away, and every editor and audio tool accepts it. The cost is size: a stereo WAV is roughly 10 MB per minute, which adds up fast over a long recording. Choose WAV when you are going to edit, transcribe, or re-encode the audio later, or when quality is the whole point.
  • MP3 — 192 kbps, which is transparent enough for speech and fine for most music. Roughly a tenth the size of the WAV and plays on literally anything. Choose MP3 when the audio is the finished product — a podcast, a voice memo, a soundtrack you want on a phone — rather than the start of more work.

Where the audio comes from

  • The audio is taken from the first audio track in the file, and it is re-encoded to the format you pick. For a normal video — one audio track — that is simply “the” audio.
  • A video with several audio tracks, such as a film with multiple language dubs, yields the first one. If you need a different track, that is worth a note on the contact page.
  • A video with no audio track at all has nothing to extract; the tool will report a failure rather than invent a silent file.
  • Audio files themselves work as input too — taking the audio “out of” an MP3 is just a format conversion, and WAV→MP3 or MP3→WAV is a perfectly good use of this tool.

Formats it accepts

Video: MP4, MOV, MKV, WebM, AVI, FLV, WMV, MPEG, TS, M2TS, 3GP, OGV, VOB, MXF and more. Audio: MP3, WAV, M4A, AAC, FLAC, OGG, Opus, WMA, AIFF and more. If a file is neither video nor audio it is skipped and named in a note above the queue.

If something goes wrong

  • The job fails at “Extracting audio”. Usually a video with no audio track, or a file whose audio is in a codec the bundled FFmpeg build cannot decode. Try another file to confirm the tool itself is fine.
  • The WAV is enormous. Expected — it is uncompressed. If size rather than fidelity is the problem, extract to MP3 instead.
  • A rental or store-bought download fails. Protected (DRM) files are deliberately unreadable by any ordinary tool; this one is no exception, and the files are not yours to convert.
  • A very long video stops part-way. The whole file and its audio output live in the page’s memory, so a single video over roughly 2 GB may run out of room.

Still stuck? The contact page lists exactly what to include.

Privacy, in one line

Video is often the most personal thing on a phone, and a voice recording more so. The extraction runs in this tab on FFmpeg compiled to WebAssembly, so the file never leaves your machine — no upload, and nothing kept after the tab closes. The privacy page is the long version.