2018-04-10, 10:47 PM
On my computer, using VLC, I've never had a problem playing an mkv with two video tracks. However, if I'm streaming the same mkv to my PS4, then it only "sees" the first video track and no option to change it. I haven't tried authoring a BD, using two video tracks in the same stream, but I would imagine that it's not a problem since the format supports PiP.