I am having trouble with the rendered matching of a posed poser figure overlayed on and matching movement on Background Footage. Eventually, the idea would be to start off with the actual background footage, fade to overlay of poser figure matching the movement in the background footage, and then fade to only the poser figure and be able to move around and see the movement from other angles (front, top, side) based on the poser figure 3d.

Within Poser I am able to match the Background Footage on the Main Camera. I can look at the Poser figure in 4 cameras including the Main Camera and am happy with the way things look. When I go to Animation/Make Movie everything renders, but the Poser Figure is not well overlayed on the Background Footage. The movement of the Poser Figure does match the video, but the Poser Figure appears smaller (shrunk and raised up) on the screen.

The picture on the left is from the rendered movie. The picture on the right is what it looked like posed in Poser.

Any ideas on what I am doing wrong or how to correct this?

Thank you