Pinched from AE-CoPilot..
Stabilise footage as usual, make layer 3d. Make a null, copy across anchor animation from stabilised footage. (check position matches footage) Make camera. Parent Camera to null.
select Null anchor, alt-click the animation clock thing.
Type smooth(0.2,5)
every 0.2 seconds sample 5 times. The longer the duration, the smoother, but more black borders ..mix and match etc.
