I just stumbled upon this:
It really bends my mind... Could be a job for HitFilm projector, eh?
I think this would be pretty easy in HF using projection. Add some planes. Make sure you projection camera starts off at the same location as the real camera, and the projection is using the same footage as the real camera. Leave the original footage as 2d, but your projection planes as 3d.
It will start off looking normal, but as you move your main camera, the projection planes should move similar to what's seen here.
So those aren't clips from Inception that fell to the cutting room floor? ;^)
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