Is it possible to relight filmed footage with NUKE or After Effects? I have a Video of a face that I filmed with soft lighting and almost no shadows. The camera is a static portrait shot. Now I want a spot light to move slowly around the head. Is something like this possible in NUKE or After Effects?


Note: Only the light should be done in post. The head should be real footage filmed by a static camera.
I suggest build a real lighting rig and maybe stabilizing her neck.

If you decide to do it afterwards you have to:


Modeling the head and her hair (scan it if this is possible)
Tracking the shots with blender or pftrack
Replacing the head in your favourite package


There are some obstacles: 


To get realistic shadows and highlights you probably need a better rendering engine for nuke 
Detailed modeling is necessary to get the shadow right (espacially for the nose and the hair)
Modeling her hair can be a very difficult task