They play in VLC, Mplayer and QuickTime with Matroska QT Component. If, for instance, the subtitles are track 4, then you would add the following to the mkvextract string: '4 ubtitles.srt'. If you have subtitles, find out which track number the subtitle has in mkvinfo. The track number must correspond to the codec listed by mkvinfo. Also, you can rename the codec files to anything you want as long as they have the proper file codec name extension. Using the above example, I'll have three files in my home folder named 'audiofile.aac,' 'audiofile2.aac,' and 'moviefile.avi'. The tracks will be extracted and dumped into your home folder. Mkvextract tracks /MyMovie.mkv 1:audiofile.aac 2:audiofile2.aac 3:moviefile.avi So this is what you would enter into the Terminal, where 'MyMovie.mkv' is the movie file you drag into the terminal window: Subtitles will have a '.srt' extension.Ĥ) To demux/extract the files, you have to include the track number and the file extension of the file you want. The audio tracks have the '.aac' file extension. If the movie file had subtitles, it would be listed as an additional track.ģ) Above, the video track is a DivX and hence it ends in '.avi'. | + Default duration: 41.708ms (23.976 fps for a video track)Ģ) From the above info, you can see that there are three tracks, one video and two audio tracks. | + Default duration: 42.667ms (23.438 fps for a video track) | + Writing application: mkvmerge v0.9.1 built on 23:29:28 | + Muxing application: libebml v0.7.0 + libmatroska v0.7.0

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Mkvtoolnix gui set track uid