Set up your two pieces of video where you want your cut. Add an adjustment layer and add the effect Distort>Transform and set the scale to 150. Now just add a couple of moving masks to the adjustment layer over about 1 second duration. Here's a quick example project I made demonstrating the technique: 6778_transformscalewipefolder.zip
Johnny Cuevas, Editor
"I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work."
---THOMAS EDISON on inventing the light bulb.