Compare software

MKVtoolsMKVToolNix
Freemium

Some queue, batch, and watch-mode features are limited to registered copies.

 Free

Free and open source under the GPL 2.0.

macOS Windows, macOS, Linux
  • Processes video into MKV without re-encoding supported tracks
  • Can select, preview, and extract tracks
  • Adds, removes and retags tracks without re-encoding anything
  • Header editor for fixing default track flags and languages
  • Does not create MP4 or AVI files
  • Requires a 64-bit Intel Mac running OS X 10.9 or later
  • Matroska output only
  • Cannot change the video or audio encoding at all
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 8, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.