Im having some issues with my media material. (Windscreen video)

Okay so have created a media player, a media texture and a material and placed that material on my windscreen. As you can see from below, when I set the media player play rate to 1.0 it works in scene, it also works when I play it in a new editor window, as long as the media player is playing. However when I build it the material remains black and the media doesn’t play. I’ve attached the blueprint code that I think should play it, but obviously that isn’t working. Any help would be greatly appreciated, and I can provide more screenshots of other areas like the materials if needed.

Is your video sitting in the /Movies folder? It has to be there for it to package correctly