Extract audio from MKV

Upload an MKV file and save its audio track in the format you want.

Output format

Audio out of Matroska

MKV files carry all kinds of audio: AAC, AC-3, Opus, FLAC, and more. This tool decodes the primary audio track in your browser and exports it in your chosen format, no desktop software required.

OBS screen recordings, media archives, and downloaded videos are the usual sources.

Tips for MKV sources

For music content, FLAC output preserves everything. For speech, MP3 or M4A keeps things small. If your MKV holds surround AC-3 audio, the stereo downmix happens automatically during extraction.

Frequently asked questions

My MKV has several audio tracks. Which is extracted?

The primary track. For picking among multiple language or commentary tracks, use the select audio track tool instead.

Can the browser really decode AC-3?

Yes, an AC-3 decoder is loaded automatically when needed, so Dolby Digital tracks extract fine.

Are files uploaded?

No, extraction is local, which matters with MKV files that often run large.