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Extract audio from video

This free tool takes the audio out of a video file and hands it back as a standalone audio file. It runs inside your browser, so the video is never uploaded. Where the file allows it the audio is copied out untouched rather than re-encoded, which is both faster and lossless.

Painted illustration for extracting audio from video: a film reel unspooling, its strip narrowing into a single audio ribbon that runs into an open book

Drop a video file here

Up to 512.0 MB per file.

Your video is processed in your browser and never uploaded.

How to use it

  1. Drop a video file onto the box below, or choose one from your device.
  2. The tool downloads its audio engine once, then reads the file and works out whether it can copy the audio or has to re-encode it.
  3. Download the audio file. The page tells you which of the two happened and why.

If the reason you wanted the audio was a transcript, you can skip this step. FastScribe takes the video itself and pulls the audio out on our side.

Transcribe the video directly →

Frequently asked questions

Does this re-encode my audio?

Only when it has to. If the audio inside your video is in a format that can stand alone as its own file, such as AAC, MP3, Opus or FLAC, it is copied out bit for bit with no quality loss and it finishes almost instantly. Anything else is re-encoded to AAC, and the page says so rather than leaving you to guess.

Why is there a download the first time?

The tool that does the work is a full audio and video engine compiled to run in a browser, and it is about 31 MB. It is fetched only after you choose a file, never when the page loads, and your browser caches it afterwards. On mobile data that download is the main cost of using this page.

Why is there a size limit?

Everything happens inside your browser tab, and the file is held in memory twice while it works: once as your browser reads it and again inside the audio engine. A large video would run the tab out of memory and lose your work partway through. For bigger files, uploading is the better route because our servers have no such ceiling.

Do I need to do this before transcribing a video?

No. FastScribe takes video files directly and pulls the audio out on our side, so you can skip this step entirely. This tool is for when you want the audio file itself, to keep, to edit, or to feed into something else.

Is my video uploaded?

No. The engine runs in your browser and your video never leaves your device. You can disconnect from the internet once the engine has downloaded and it will still work.