Hmmm guys, do you have any stock videos? Perhaps try to drop in some video’s that are not from there and check is it working with something else, while I was working on my project I had friend mail me videos in certain compression that I couldn’t open with Unreal in any case, later he just changed the
compression, sent me same videos, they worked perfectly, so try that out I guess. Also when you plan on packaging your project, it gets interesting there, notify me when that happens so I can provide with some screenshots of settings that worked for me!