Sometimes you only need the sound from a video: a lecture you recorded, an interview, a song from a clip or a voice note buried in a screen recording. This converter pulls the audio track out of your video and saves it as a standard MP3 file, ready for any player. The whole job runs in your browser using a WebAssembly media engine, so the video is never uploaded.
How the Extraction Works
When you start, the tool loads a browser version of the FFmpeg media engine (a one-time download of the engine files). It then reads your video, decodes the audio stream and re-encodes it as MP3 at a quality suitable for speech and music. Short clips convert in seconds; long or very large videos take longer and use more memory, so a reasonably modern device is recommended.
How to Convert Video to MP3
- Upload the video file — MP4, WebM and MOV files work well.
- Wait for the media engine to finish loading on first use.
- Click the convert button and watch the progress indicator.
- When it completes, preview or simply download the MP3.
- Check the file name and save it where you want it.
Typical Uses
- Saving lectures and talks as audio to listen to on the go.
- Extracting interview or meeting audio for transcription.
- Keeping the music or ambience from a personal video.
- Making audio clips for presentations and podcasts.
Frequently Asked Questions
Which video formats are supported?
MP4, WebM, MOV and most other common formats the media engine can read. Exotic or damaged files may fail to decode.
How long a video can I convert?
There is no set limit, but very long videos consume a lot of browser memory. Clips up to a few hundred megabytes are the comfortable range.
Is my video uploaded to a server?
No. Conversion happens entirely on your device; your video never leaves it.