MKVToolNix 37.0.0

MKVToolNix is a set of tools to create, alter and inspect Matroska files under Linux, Mac, other Unices and Windows.

15.7 MB
4.6 57 votes

With these tools one can get information about (mkvinfo) Matroska files, extract tracks/data from (mkvextract) Matroska files and create (mkvmerge) Matroska files from other media files. Matroska is a new multimedia file format aiming to become THE new container format for the future. You can find more information about it and its underlying technology, the Extensible Binary Meta Language (EBML), at

What's New:

New features and enhancements

  • MKVToolNix GUI: the list of often used languages now contains those from Wikipedia‚Äôs "List of languages by native speakers" by default. Also by default only those languages will be shown in the language drop-down boxes.

Bug fixes

  • MKVToolNix GUI: multiplexer: fixed a bug in the "make destination file names unique" logic that caused an existing number-in-parenthesis at the end of the file base name to be removed in certain situations (e.g. when the first added file was named m (3).mkv and both m (3) (1).mkv and m (3) (2).mkv existed already, the GUI was suddenly use m.mkv instead of m (3) (3).mkv).
  • MKVToolNix GUI: on Windows the GUI is built with a slightly older version of the Qt library again (5.12.4). The Qt version used in release v36.0.0, v5.13.0, lead to crashes when doing certain things such as selecting multiple tracks in the multiplexer. Fixes #2605 and #26008.