Extract audio from a video online
Separate the audio track from an MP4, MOV or WEBM video and download it as MP3, without installing anything or uploading the file to a server.
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Discards the video image and keeps only the sound, encoded as MP3, regardless of the source video format.
Use cases
- Pull the audio out of a recorded call or a lecture.
- Save a video's soundtrack without keeping the visual part.
- Convert any common video format into a lightweight, universal audio file.
How it works
- 1
Upload your video
Accepts MP4, MOV and WEBM files.
- 2
Click Convert
ffmpeg.wasm separates the audio directly in your browser.
- 3
Download the audio
Download the resulting MP3 once processing finishes.
Technical details
Uses ffmpeg.wasm, a WebAssembly build of FFmpeg running inside a Web Worker in your browser. The first conversion downloads the engine (around 7 MB); later ones in the same session are faster.
Frequently asked questions
Does it work the same for MP4, MOV and WEBM?
Yes — the same process separates the audio from any of the three formats and always outputs an MP3.
Does it lose quality?
The MP3 is encoded at a high quality; since it's lossy compression it isn't a bit-for-bit copy of the original audio, but it's indistinguishable for most purposes.