@ibooij What are the dimensions required for Videos to display 'Full Screen'?
My laptop that I use for BRVR has a 1920 by 1080 display and when using it for BRVR I get a couple of black bars down the side of the screen. When I generated my own video, I output it at 1920 by 1080, and get MUCH wider bars down the side. So I guess that BRVR takes up some of the screen estate at the bottom to display the stats and profile. I didn't try and hide those but now I have, my ride expands to fill the available screen. When I pick a BRVR ride and hide the profile and stats screens then I end up with Black bars above and below the video.
I have tried to have a look at a downloaded ride and see what the dimensions of the file are, but you encode then so we can't see the video size ... clever

I have looked at the Download test folder and found an MP4 file in there that is 1920 by 928, can I assume that this is the dimensions you use for your rides, and if I change my output size to that, I'll get a better fit on the screen?