When changing the Y orientation of a clip within 3D Track Motion it immediatly chops the clip in half - how do I prevent this? I want to see the whole clip/frame as it revolves ...
I tried Y and the Motion blur is there, and the clip is FULL. When you say " . .it immediately chops the clip in half" what do you mean precisely? Half height, width?
Have you tried rendering out a small portion to check? What specs is your machine running on? My thoughts on this is that there is a basin full of maths going on and maybe you're not getting all the power you need?
I suppose, not a "sweet" solution, is to render out clip WITH track motion and then 3-D it? Yeah, not ideal.
Make sure that you are using the controls that are in 3D as opposed to just track motion. I am not sitting in front of Vegas right now, but on the left hand upper side of the track control you have a lot of selections in a drop down. Make sure it says 3D. I believe the same thing happened to me once and that is what I had to change.