[Cin] Tracking (or tracer?) control points

[preobraz at gmail.com]

Hi all!

In the video (watch from 1:13):
https://www.youtube.com/watch?v=3kzKhedIX1o
shows how a clip is inserted into a chromakey area. I looked at the 
Tracer effect in Cinelerra-gg, but I still did not understand whether it 
was possible to perform a similar task with it.
If there are no such instruments in Cinelerra-gg - maybe try to adapt 
the Motion effect to the task?  I think solving this issue will add 
cinelerra-gg even more professionalism.

For information: in Adobe After Effects,Screen Replacement & Motion 
Tracking solves this problem. Example: 
https://www.youtube.com/watch?v=JJmvrNmso5Y

--
Ugin