If your footage is already framed correctly:
Track 1 in Compositing Mode>Mask: Split Screen Media from Media Generators>Checkerboard with Mask Generator FX applied
Track 2 (made compositing child to track 1): Video 1 (on left)
Track 3: Video 2 (on right)
You could also use Track Motion, posiibly with Pan/crop to reposition yur video anywhere you want.
The black bar can be made from generated media or created in a paint program with a transparent background.
Gary Kleiner
