Convert video to MP3
Pull the soundtrack out of a video and save it as an MP3.
Drop a file to start
Runs in your browser. Nothing is uploaded.
A lecture that was filmed, a talk, an interview, a set that was recorded as video because that is what the camera did — all of them are audio as far as anyone listening is concerned, and a video file is a poor way to carry audio around. It will not go on a podcast feed, it will not play in a car, and it is many times the size it needs to be.
This decodes the soundtrack, throws the picture away and writes an MP3, which is the format that plays on everything. The saving is dramatic: an hour of talk that was several hundred megabytes as video is a few tens of megabytes as audio, with nothing lost that anyone was listening to.
MP3 is not something any browser will encode on its own, so the encoder is LAME compiled to WebAssembly, fetched when this page needs it. Both the decoding and the encoding then happen on your machine — nothing is uploaded, which for a recording of a meeting or a lecture is usually the whole question.
Step by step
- 1Drop in the video.
- 2Choose how much quality to keep.
- 3Press Convert, then download the MP3.
Questions
Does the audio quality drop?
A little, since the soundtrack was already compressed and this is a second lossy pass. At high quality it is inaudible on speech.
How much smaller is the file?
Enormously. An hour of video at several hundred megabytes becomes a few tens of megabytes as MP3.
What video formats can it read?
MP4, MOV, MKV, WebM and MPEG-TS. The soundtrack is what matters, and it reads all the common ones.