How to play a media on full screen when begin play

I made a media for my games,just like logo,I want to use it when I begin to play it.
I have to play it on full screen not on some meshes like boxes.
How can I do that on my HUD blueprint?Thank you

It sounds like video you made is something that you want to play when you run a game. In project settings “Movies” sections where you can set up startup movies. Also here full doc about media framework: