I am learning about track mattes and have it pretty well figured out but Premier Pro is having an issue. Before I render, the video is fine. After I render, Premier is cropping the underlying video. If I go to the Scale effect and drag the video, it instantly fixes the problem, but then the clip is unrendered again. Render and the problem comes back.
If you use any of the Motion parameters on a video that is being modified by a track matter, Premiere Pro goes nuts. You have to put the movement into a nested sequence, then use that sequence to matte.
I installed the 6.0.4 patch and it fixed it. duh. THanks anyway guys and gals