hello guys, we are kinda stuck with our game, and that is because we want to have a widget that play a video texture, delays like 30 s, and changes the video texture into other video texture,
but we don’t really know what the correct node is for this one, please can somebody help us? 
tried using ‘Set Material’ with your video textures set up as separate textures?
If that doesn’t help, there’s an in depth tutorial here which I hope will - A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums