I have never been able to get Emby Theater (software not Win store app)to play on my desktop. It has 3 monitor setup. I hadn't gotten around to making a post about it.
Emby theater will just play audio of live tv, but just show a black screen. Same black screen with audio plays with local H264 files. When i try to playback my live TV recordings (mpeg2) it just loads it for a sec(black screen) then stops going back to the video description page. Doesn't matter what monitor I load it up on. No change if I toggle the Video rendered form Madvr to EVR etc.
I disable my 2 other monitors