MKVToolNix 18: MKVToolNix is a free application for processing files MKV. With the free application you can cut a large file into smaller pieces, or vice versa join smaller pieces into a larger one. You can save MKV audio to Mp3 and also embed subtitles very easily.
It's a very practical tool for those who have HD movies on their PC and want to edit them. 
The developer of MKVToolnix project Moritz Bunkus announced the release of the new MKVToolnix 18.0.0. It's a bug fix release of open-source and cross-platform (Windows, Linux and Unix) application of MKV (Matroska).
MKVToolNix 18.0.0 "Duel with the Devil" was released just one month after the release of MKVToolNix 14.0.0 "Flow", and seems to add a lot of new features and improvements, along with several bug fixes and some system changes.
The new MKVToolnix 18.0.0 comes with a new, much more practical GUI that supports editing video color features.
You can see all changes from release notes and of course to
download the application to the platform you want
