MKVtoolnix for Mac
MKVToolNix is a powerful and streamlined OS X utility that gives you access to all the tools needed for creating and processing Matroska files on a Macintosh computer.
Built-in command-line interface and Matroska metadata adjusting tools
Even if it comes with a fully functional GUI, MKVToolNix can also be access from the command-line once you have it installed and configured on your Mac.
In order to do that you must add the path to the tools to your $PATH variable by running this command in the Terminal:
export PATH=/Applications/Mkvtoolnix.app/Contents/MacOS/:$PATH .
Moreover, via MKVToolNix’ main window, you will be able to quickly load the input files as well as customize tracks, tags and chapters.
MKVToolNix makes it simple and straightforward to change the track name, language, the default and forced track flag , tags and even timecodes. On top of that, you can also choose the output filename.
Furthermore, the MKVToolNix allows you to change the aspect ratio, display width and height, FPS, delay and stereoscopy, if available.
Frame and compression editing
In addition to that, MKVToolNix also enables you to add cues for all frames, change the compression mode and even include your own, user defined options.
As an added advantage, you can use MKVToolNix you to merge multiple Matroska files if you need to. Not only that, but it also enables you to split videos after duration. Also, MKVToolNix can be employed to select the desired chapter file, change the application language, charset and cue name format.
Simple and easy to use Matroska chapter editor for the Mac
MKVToolNix includes a chapter editor designed to help you to rapidly and effortlessly create chapters and subs, while providing you with the necessary means to adjust timecodes in no time.