If I try to play e.g. the "Tutorial: Duplicant movement" video, I get only the video title on a black background, but there's no actual video. The sound of the video can be heard though.
I've tried to strace the program and it appears it doesn't use any system video libraries, so I don't know what more info I can provide. The OS is openSUSE 15.1 x86_64.
Try to play any tutorial video.