Extract audio from video

The sound in a video sits in its own track, so pulling it out is mostly a matter of lifting it away from the picture. Where the format allows it, the sound comes out exactly as it went in, which is instant and costs no quality. Asking for a different format means it has to be converted.

How to use it

1 Add the video file.
2 Choose a format. M4A is usually the one that can lift the sound out untouched.
3 Set the quality if you are converting to MP3 or something else.
4 Extract and download the audio.

Formats this tool accepts

Each one has a reference page covering what it stores and where it is supported.

Questions about extract audio from video

Does extracting audio lose quality?

Not if the track is copied. An MP4 almost always carries AAC, so saving as M4A moves the exact same bytes into an audio container with no loss at all. Choosing MP3 instead means decoding and re-encoding, which is a second generation of lossy compression.

Can I extract just part of the audio?

Extract the full track here and then use the trim tool to cut it, or trim the video first and extract from the shorter clip. Both give the same result.

What if the video has more than one audio track?

Multi-track files such as MKV releases with several languages let you pick which track to extract. If only one track is listed, that is all the file contains.

Are my files uploaded to a server?

No. The whole thing runs inside the browser tab you already have open. Your file is read straight from your own disk, worked on there, and handed back as a download. Nothing is sent anywhere, nothing is stored, and there is no account and no queue.

Is there a file size limit?

There is no server-side limit because there is no server. The practical ceiling is your device memory, since the file and its output both have to fit in the tab. Files up to a few hundred megabytes are usually fine on a desktop machine, while phones and older laptops will struggle sooner. If a large file fails, close other tabs and try again.

Does it work offline?

Yes, once the page has loaded once. The engine is cached by the browser, so you can turn off your connection, reload the page and keep working. That is a useful side effect of doing the processing locally rather than a separate offline mode you have to enable.