ToolAtlas
FavoritesRecent

Extract audio

Processed in this browser

File limit: 32 MB

This tool never uploads your input.

Drop a file

Drop a file here or choose one.

Sample workflow: drop a local video, then capture its audio track as WebM.

You wanted the lecture’s audio without the slides. The browser records what it can play. The container is usually WebM, not an iTunes file.

A meeting recording where you only need what was said — that job often gets sold as “MP4 to MP3.” This page is MediaRecorder on the playing element, then a WebM download. Safari and some locked-down browsers may refuse or pick another MIME.

If you already have audio and only need a slice, use audio cutter (WAV). If you still need the picture, use video trimmer. A short animated loop is video to GIF — GIF89a, not ffmpeg.

Lecture soundtracks, WebM not MP3

Pulling a voice track from a class MP4 is MediaRecorder work. Export is typically WebM, not MP3. Portals that demand MP3 will bounce it. Typical ceiling about 32 MB. Trim the picture first if the file will not start.

How to use it

  1. Choose a local video this browser can play.
  2. Set the range if you do not want the whole file.
  3. Download the WebM. Typical ceiling about 32 MB.

Honest limits

Not ffmpeg.wasm. Not a YouTube ripper. Quality is whatever the capture graph did, not the original bitrate.

FAQ

Will this give me MP3?

No. MediaRecorder typically writes WebM (often Opus). We will not title this page as MP4→MP3.

Can I pick a time range?

Yes, a start/end clamp. Fine frame edit is the video trimmer’s job if you still need picture.

DRM or a YouTube tab?

We only see a file you open here. We do not rip a streaming site.

Why WebM if I started from MP4?

The tab plays the file and re-records the audio graph. It is not a remux of the original AAC packet.

Is the video uploaded?

No. About 32 MB typical. Larger lectures will not start.

Related tools