About this tool
Grab the soundtrack from a video and save it as an audio file. Choose the original track for the fastest, lossless result, or convert it to a universally-playable MP3 or an uncompressed WAV.
The whole process runs in your browser — your file never leaves your device and nothing is uploaded. The original option uses mediabunny to copy the existing audio stream untouched (lossless, saved as .m4a for MP4 or .webm for WebM). The MP3 and WAV options decode the audio with the Web Audio API and re-encode it: MP3 uses the in-browser LAME encoder at 128 kbps, and WAV writes 16-bit PCM.
MP3 gives you a small, widely-compatible file; WAV gives you the raw samples for editing. Both are produced entirely on your machine with no server round-trip.
Frequently asked questions
What output formats can I get?
The original audio track (saved as .m4a from MP4 or .webm from WebM), MP3 (128 kbps), or WAV (16-bit PCM). Source files can be video or audio your browser can decode.
Which options are lossless?
The original-track option is lossless — it copies the existing audio packets without re-encoding. MP3 and WAV re-encode the decoded audio, so they are not bit-identical to the source (WAV is uncompressed but resampled to PCM).
Is my file uploaded anywhere?
No. Extraction, decoding and encoding all happen locally in your browser; your file never leaves your device and there is no sign-up.
Why did MP3/WAV fail when the original worked?
MP3 and WAV need your browser to decode the audio via the Web Audio API. If the audio codec isn't decodable that way, use the original-track option instead, which copies the stream directly.