@Jason Carr I made a bitbucket ticket for this, here is the link: https://bitbucket.org/jasondavidcarr/launchbox/issues/2097/videos-issues, but I am just going to place it here as well:
LaunchBox Version: 7.0 beta 2
Windows Version: 10 Pro
Issue 1
Problem occurs with: VLC and WMP
When you go to a game for instance Donkey Kong 64 and you select to play it, then the menu comes up which says play, play video and so on. When this menu appears, the video continues to play but the audio of the video is muted (Except not on Text Line With Details). I assume this is because with Text Line with Details, when the menu appears it does not do a full page transition to a new page as with the other views. When you back out of the menu, the audio of the video is still muted. The audio only returns when go to another game and comes back. Soundtrack audio works fine, it is only video audio.
(Edit: Audio now muted for Text Line With Details too with official 7.0 release).
(Edit: This happens when Prioritize Music Soundtrack Audio over Video Audio is enabled)
Issue 2 (VLC only)
The first game you select in a platform and the menu appears and you back out, the video is gone (Except not on Text Line With Details). Again assuming this is because with Text Line with Details, when the menu appears it does not do a full page transition to a new page as with the other views
Issue 3
When you edit a game in Launchbox the game's video on the side stops and disappears instead of pauses, and does not resume after the Edit box is gone