There is a feature that I think I remember seeing a few months ago in a video of a talk about some of the new features in CS6. It was where a locked down tripod shot of a hallway with pillars to either side and people walking around in the shot. They were able to create a dolly movement down the corridor by masking the pillars and then creating a camera movement, I think.
It's very hard to explain as I saw it so long ago. I was wondering what this feature was. As far as I know it is not done with 3d camera tracking as it was a locked down shot.
I have looked through feature lists and I can't find it.
If some one could tell me the name of this feature or where to find the video it would be much appreciated.
Also I pretty sure it was an after effects feature but I'm not 100%