I have always had problems with AE and dvc pro HD. This is what occurs.
I bring in the footage and drag and drop it to create a new comp for it automatically (I am using CS5).
The composition it creates is perfect 960x720...I can click the aspect ratio fix button and it stretches it out to 1280 x 720....no problems yet everything is working.
Now I finished the work in AE and go to do the export via "Make Movie" and this is where the trouble lies.
At first I tried to export back to dvcproHD. Resolution is at full (960x720)...I switch the codec to DVC PRO HD 720p 60.