Split screen video effect

[Jamaine]

How do you do this split screen video effect in the video below at 0:08.



http://www.youtube.com/watch?v=BiC9p4AD3GI

 

[Kevin Monahan]

This should help: http://www.youtube.com/watch?v=lF8_IqAkGyg

 

[Ann Bens]

http://forums.adobe.com/thread/918968?tstart=0