I use Lightroom (5.7) for both photos and videos and I'm trying to find a way to watch my videos in fullscreen. Using the F key only shows a still image from the video. The closest to fullscreen I've come is to use shift+tab and then the "Lights out" feature, but thats not really fullscreen and that bothers my OCD ;-)
Is there really no way of watching fullscreen videos in Lightroom?
Video features are extremely basic and limited in Lightroom. What you see is what you get.