A song from a music video, a talk or a lecture to listen to on a walk, an interview to send to someone for transcribing, the soundtrack of a clip for an edit: all you need is the sound, and an MP3 of it is a fraction of the video's size and plays on anything. Open the video, pick MP3 and a bitrate, and press Extract audio; the picture is dropped and only the soundtrack is kept, encoded as MP3. Trim the start and end first to keep only the part you want.
The video is read and the sound decoded by your browser's own media engine, and the MP3 is written by the LAME encoder built into the page, so even a long video takes seconds rather than an upload and a wait. It is free to use, with no account and no upload limit, and it runs entirely in your browser: nothing is uploaded, and while the page stays open, a feature you have already used keeps working offline.
- Which bitrate should I choose?
- 192 kb/s is plenty for speech and most music and is the default. 320 kb/s is the highest MP3 goes, for music you care about; it cannot add back detail the video's own sound did not have, so it only helps when the video's sound was good to begin with. 128 or 96 kb/s make smaller files, fine for talks, lectures and voice.
- Does converting to MP3 lose quality?
- A little: the sound in an MP4 is almost always already compressed (usually AAC), and MP3 compresses it again. At 192 kb/s or more the difference is very hard to hear. If you need it untouched, choose WAV, which is uncompressed, though much larger; it still cannot be better than the sound in the video.
- Can I extract the audio from an iPhone video?
- Yes. iPhone videos are MOV files, usually with H.265 (HEVC) pictures and AAC sound. The sound is all that is needed for an MP3, so it works even where the browser cannot show the HEVC picture. On the iPhone itself, tap the box and choose Photo Library to pick the video; the MP3 is saved to Files, or Downloads on Android.
- How long a video can I convert to MP3?
- No limit is set: the video is read from your device in pieces rather than loaded whole, so long recordings work. The practical limit is your device's memory for the finished MP3, which is small: about 1.4 MB a minute at 192 kb/s.
- What if the video has more than one sound track?
- The first sound track is saved. A video with no sound track has nothing to extract, and the page says so.
- Can I convert a YouTube link to MP3?
- No. This page converts video files on your own device; it does not download from YouTube or other sites. If you have the video file, open it here.
- Is my video uploaded to make the MP3?
- No. The video is opened, decoded and turned into an MP3 in this browser tab on your device; nothing is sent to this site or anywhere else, so private recordings stay private.