In FCP you can simply create a split screen effect with both images up simultaneously. Simply scale and reposition the clips in the Motion Tab until they are nicely composed, with one on V1 and one one on V2. That’s your end position.
Then decide if both come on at the same time, or at different times, and adjust the start of each accordingly.
BTW, you can use the Crop parameters in the Motion Tab to customize one or both of the clips. It’s nice to keep one horizontal 4×3 and crop the other, if possible, to a more vertical 3×4. Watch the movie American Graffiti for ideas, as Lucas used split screen extensively in the film.
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
https://www.drwfilms.com
Don’t miss my new tutorial: Prepare for a seamless transition to FCP X and OS X Lion
https://library.creativecow.net/weiss_roth_david/FCP-10-MAC-Lion/1
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