Extract Audio from Video
Pull the audio track out of any MP4, MOV, MKV or WebM as MP3, WAV or M4A — locally, no upload. The in-browser engine downloads once (~30 MB) on first use and is cached for the rest of your session.
Quick answer: Pull the audio track out of any MP4, MOV, MKV or WebM as MP3, WAV or M4A — locally, no upload. The in-browser engine downloads once (~30 MB) on first use and is cached for the rest of your session.
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Frequently asked questions
- How do I extract the audio from a video?
- Drop the video in, pick MP3, WAV or M4A, and click Extract audio. The output is the audio track only — the video is discarded.
- Is my video uploaded anywhere?
- No. The extraction runs entirely in your browser using ffmpeg.wasm. Nothing leaves your device.
- Which output formats are supported?
- MP3 (192 kbps), WAV (16-bit PCM, uncompressed), and M4A (AAC, 192 kbps).
- What's the difference between the three formats?
- MP3 is universal and small. WAV is uncompressed (great for editing, but big). M4A is AAC at 192 kbps — slightly more efficient than MP3 at the same bitrate and friendly to Apple players.
- Does this re-encode my audio?
- Yes — all three formats re-encode at the chosen settings. That guarantees the output plays everywhere, regardless of the codec inside the source video (AAC, Opus, Vorbis, AC-3, etc.).
- What's the maximum file size?
- 500 MB. Extraction is fast even at the cap because we drop the video stream entirely.
- What video formats does it accept?
- MP4, MOV, MKV, WebM, AVI, FLV, 3GP — anything ffmpeg can demux.
- Will the audio quality drop?
- Re-encoding at 192 kbps for MP3 and AAC is high enough that almost no one can tell the difference from the source. WAV is uncompressed and bit-exact at the chosen sample rate.
- Can I trim the audio at the same time?
- Not in this tool. Extract the full audio first, then run it through the Audio Cutter to trim — both run client-side, so it's still no upload.
- Is extracting audio free?
- Yes — completely free, no signup, no watermark.