Extract MP3 Audio
Pull the Sound Track Out of an MP4 File
Need to use Extract MP3 Audio right now?
A recorded meeting, a filmed performance — anything that's really audio with a picture attached.
Drop a video file, or click to browse
Processed locally in your browser — never uploaded
Strips the video track and encodes the remaining audio as MP3 — handy for saving just the soundtrack, lecture audio, or a podcast recorded as MP4.
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
People also search for
About Extract MP3 Audio
MP4 is the default format most cameras, phones, and screen recorders save video in, and a huge share of the time someone wants "just the audio" from a video, it's specifically an MP4 they're starting from — a recorded meeting, a filmed performance, a video someone sent that's really just audio with a picture attached. This tool is built for exactly that common case.
A real FFmpeg build compiled to WebAssembly strips the video stream entirely and re-encodes the audio track as MP3 at a high VBR quality setting (quality level 2), running the whole process inside your browser rather than on a remote server. This works regardless of what audio codec the source MP4 actually used internally, since the audio is decoded before being re-encoded to MP3.
The video stream is discarded during processing, not merely hidden in the output — the resulting MP3 contains only the audio, with no leftover video data taking up space.
This is scoped specifically to MP4 input, matching how the tool is typically searched for and used — for other video container formats (WebM, MOV, AVI, MKV), the more general Extract Audio from Video or Video to Audio Converter tools handle the same extraction.
How it works
- Upload your MP4 file. The file loads into the browser-based FFmpeg engine.
- Audio is extracted and encoded. The audio track is decoded and re-encoded as MP3.
- Download the MP3. Just the sound, with the video discarded entirely.
Examples
Getting the audio from a recorded meeting
Input
recorded-meeting.mp4
Output
an MP3 with just the spoken audio from the meeting