Real time compositing with UE4

Hi,

I’ve been researching a lot of things recently and an idea dawned on me, though i don’t know if its possible. Is there a way to have a program like Nuke or after effects composite over Unreal engine in real time? What i was thinking is a demonstration of Arch viz or another virtual environment in UE4 then comping in somebody in a green-screen studio in real time, talking about the environment, moving through it etc. It would probably need tracking data, real time reflections of the camera footage etc, does anybody know if that is possible in any way?

Thanks

Is there any tutorial for this???