Thanks for the quick reply, the info on the camera move is below. You might be right on the interlace issue, but any help would be great. Let me now if you need any more info?
From avid
Lower field first
4×3 Non spuare
IN AE
Interpret video to lower field first
Render que
Quicktime-Animation
Lower field first
RGB
Millons of Color
Premultiplied (matted)