Using video for loading screens

I’m trying to have a video play instead of a static image for loading screens ( but there doesn’t seem to be any good documentation on how to get a video texture to actually play. I’m using a media texture there but it just won’t play the video (it shows black but that’s just because the media player isn’t loading/playing the video).

Does anyone have experience with this? It seems like a pretty important need (Sony won’t let you pass cert without animated loading screens if you go over 30 seconds after all) so surely someone else has figured this out?

Thanks in advance!