I know that this issue is covered alot and lots of good answers, but I just cant get it to work anymore.
I export out of cinema 4d, with an external compositing tag attached to a very basic cube face. I have split the cube face off the cube, and recentered the axis to the center of that face.
I do a very simple camera movement around the cube.
I bring it into AE, parent a video layer (with 3d turned on) to the 3d null. Zero out all of the position properties of the video layer so it sits exactly with the null.
I hit play in AE and I find that the image does not hold directly to the face of the cube. There is up and down movement and it does not sit where it started after the camera movement?