“Timewarp” Artifacts – How to smooth out??

[Brian Horn]

[Dave LaRonde] “For example, you now know that you shouldn’t include power lines in a shot.”

Well….sure. So no water (except sometimes) and no power lines or tumbleweeds. But does that mean it’s process of elimination for every scenario we might shoot in? If so, maybe it’s better suited for trailers, sports videos, or promos where you can eliminate shots based on their look. If you’re relying on a shot to fully tell a narrative story, you don’t want to be forced to cut it because some random element in the shot created undesirable results.

-Brian
http://www.bullbythehorns.net

[William Watling]

Can I use a matte to define foreground/background to get better results where I get warping around the edges of things? i.e. like TwixtorPro, but where the effect is applied to the whole frame NOT just the area inside / outside the matte? If so, can one of the experts kindly give a newby an idiot proof explanation of how to do it – I really mean idiot proof i,e. do I paint the matte using rotobrush the timewarp in a diff composition / layer etc? I can;t find any clear examples anywhere to describe this.