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MKVtoolnix is a set of tools to create, alter, and inspect Matroska files under OS X, Linux and other Unices, and Windows. They do for Matroska what the OGMtools do for the OGM format and then some.

Since May 1st 2003, the Matroska libraries themselves and my Matroska tools are officially released as a first public beta version. Although all of them are still under heavy development, I urge you to download the software, test it and report any errors you encounter to me. I'm always grateful for good bug reports because I miss so many mistakes and you guys

What's New

Version 9.4.0:

Note: Now requires OS X 10.9 or later.

  • mkvpropedit: bug fix: mkvpropedit will no longer say that it's writing the changes if only attachment changes are specified and none of the specified attachments can be found.
  • MKVToolNix GUI: chapter editor bug fix: overly long chapter names don't cause the GUI's window to become overly wide anymore.

  • More...


  • OS X 10.9 or later

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4.4 60


Current Version (9.x)


Downloads 338,533
Version Downloads 3,645
License Free
Date 24 Aug 2016
Platform Intel 64 / OS X
Price Free
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