Ever since the update to MPV I have had problems where a 3D MKV (MVC yet set to play back in 2d) freeze at 25-30 minutes and it will not allow to play again....just get a spinning circle. If I close out, kill all Electron instances and go back and try again, I can resume (a real PITA though)....but it will happen again.
Playing directly in MPV I have no problems. It is only within Emby that I have this problem.
I noticed at least one other has had this issue (posted in another forum here) but figured I would wait to see it it can get worked out but it hasn't so here I am.