mp4 to mp3
pull the soundtrack out of an mp4 you already have, such as a lecture, interview or your own recording, and save it as an mp3.
runs on your device · free · no sign-up
loading tool…
how to mp4 to mp3
- drop a video from your device onto the box above.
- optionally set start and end to keep only one part.
- choose mp3 (or another format) and a bitrate; tick mono for speech.
- press extract audio and download the file.
an mp4 is a container holding a picture track and a sound track, usually aac. converting to mp3 means decoding that sound and re-encoding it, so choose 192 kbps for music and 128 kbps for speech, where the extra bits are not noticeable.
long mp4 files take about as long as they would play, a bit faster on a modern computer. if you only need a section, set the start and end first and the converter skips the rest.
more ways to video to mp3
frequently asked questions
how long does mp4 to mp3 take?
an hour of video typically takes a few minutes. the first run also downloads the conversion engine, about 30 mb, which your browser keeps for next time.
is there a file size limit?
no fixed limit, but files above a few hundred mb may run out of browser memory. trim large files first.
will the mp3 have the cover or title?
no tags are added. you can add them in a music app afterwards.