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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 more...

What's New

Version 8.5.1:
  • build system: libEBML v1.3.3 and libMatroska v1.4.4 are now required due to important fixes for invalid memory accesses in those two releases. The copies included in the MKVToolNix source code have been updated to those releases as well.
  • MKVToolNix GUI: bug fix: the "save file" dialogs did not have the currently entered file name pre-selected anymore.
  • MKVToolNix GUI: more...


  • OS X 10.8 or later

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5 52


Current Version (8.x)


Downloads 299,315
Version Downloads 4,130
License Free
Date 01 Nov 2015
Platform Intel 64 / OS X
Price Free
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