Fri Aug 09, 2019 2:38 pm
Stabilization and a crop will definitely play havoc with the solution. I recommend tracking the original image, then perform your stabilize on the composite rather than the source.
You could, technically, do the math to determine how the crop affects the AoV, but you'd still have other artifacts from the stabilize, like data loss from filtering. It may not seem like much, and it may be totally invisible to the eye, but ideally you want a solve that's accurate to within less than a pixel. Also, in the final composite you could have issues with motion blur not matching direction.
Bryan Ray
http://www.bryanray.name
http://www.sidefx.com