How it works
- Drop your video file. MP4, MOV, M4V, WEBM, MKV or AVI up to 2 GB — it is read locally, nothing is uploaded.
- Pick lossless or convert. Keep the original audio stream untouched (the default, and the fastest), or convert it to WAV, MP3, FLAC, M4A or OGG.
- Download the audio. Lossless extraction keeps the codec and picks the matching container automatically — AAC becomes M4A, MP3 stays MP3, and so on.
Features
- True lossless extraction. By default the audio stream is copied out of the video bit for bit — no re-encoding, no quality loss, and it takes seconds even on large files.
- Smart container choice. The tool detects the audio codec (AAC, MP3, Opus, Vorbis, FLAC, AC-3, PCM…) and writes it to the matching file type automatically.
- Five conversion targets. Need a specific format instead? Convert to WAV, MP3 (192 kbps), FLAC, M4A or OGG.
- Batch extraction (Premium). Drop up to 25 videos (1 GB in total): they are processed one after the other in your browser with the same settings, and you get one ZIP of audio files, each identical to a single extraction. If a video fails, it is flagged and the others are still delivered.
- Up to 2 GB, 100% local. Your video never leaves your computer — everything runs in your browser with ffmpeg.wasm.
FAQ
Is this audio extractor free?
Yes. Without an account you get 2 free uses per day across AudioKit's free tools; with a free account, 5 per day. A use is only counted when you download the audio; loading the video, extracting and listening are free, and downloading the same file again costs nothing. AudioKit Premium removes the daily limit.
Is my video uploaded to a server?
No. The video is read, and its audio extracted, entirely in your browser with ffmpeg.wasm — even a 2 GB file never leaves your machine. The only network call is a tiny anonymous counter that tracks your daily free quota.
What does “lossless by default” mean?
The audio inside a video is already a compressed stream (AAC in most MP4s, for example). By default the tool copies that stream out without decoding it: zero quality loss and a very fast operation. It then picks the right container for the codec — AAC becomes .m4a, MP3 stays .mp3, Opus becomes .opus, PCM becomes .wav — so the file plays everywhere it should.
Which video formats are supported?
MP4, MOV, M4V, WEBM, MKV and AVI, up to 2 GB. If the video has several audio tracks, you choose which one to extract (the default track is preselected). Exotic codecs that have no standard audio container are wrapped in a .mka file as a fallback. With Premium, you can drop up to 25 videos at once (1 GB in total) and get all their audio tracks in a single ZIP.
Should I extract losslessly or convert to WAV or MP3?
Extract losslessly whenever you just need the audio as it is — it is faster and loses nothing. Convert to WAV if you are going to edit the audio in a DAW (every editor accepts it), or to MP3 if you need a small file to share. One honest caveat: converting an already-lossy stream (like AAC) to MP3 re-encodes it and loses a little quality — when in doubt, keep the lossless copy.