The MPG2 license I most probably needed in order to be able to stream the satellite TS stream.
With the codec disabled, I am still able to play the .mov and .mp4 files.
In general the rule applies: when you can play / stream a source using omxplayer from the command-line, you should be able to play that source via MM (as long as the module used passes the right omxplayer parameters).
If you want to pursue the issue further, you can add the --genlog parameter in order to generate the omxplayer.log file:
cd /MagicMirror/modules/MMM-RTSPStream $ vi node_helper.js Edit line 113: args.unshift("--genlog", "--avdict", "rtsp_transport:tcp"); Restart MM. $ ls -als /home/pi/MagicMirror/omxplayer.logPerhaps this log will reveal why the file does not play.