MP4 to MP3
Extract the audio track from a video and download it as MP3.
The audio engine (~25MB) downloads once on first use and then runs entirely on your device's CPU. Larger videos will take longer to process — please keep this tab open until the download starts.
Drop a video here
or click to browse (MP4, MOV, WebM — max 500MB)
Frequently Asked Questions
Is my video uploaded to a server?expand_more
No. Audio extraction runs entirely in your browser using ffmpeg.wasm, a WebAssembly build of the popular FFmpeg engine. Only the engine itself is downloaded from a public CDN on first use — your video file is never transmitted anywhere.
Why is conversion slow for large videos?expand_more
Since there's no server involved, all processing happens on your device's CPU. Larger or longer videos naturally take more time — keep the browser tab open and active until the download starts.
Which video formats are supported?expand_more
MP4, MOV, M4V and WebM are all supported. If your video uses an unusual or very old codec, extraction may fail — try re-exporting the video in a standard format first.