[Greg Prickril] “I simply shrink the talking head clip and slide it over so that it’s behind the slide clip, which I move to the center. A minute or two later, I do the opposite to return to the original layout.”
I was hoping that someone else would answer you…but I think you’re doing more moving than you need… Rather than shrinking and moving the Talking Head clip (event), just keyframe on the opacity, and reduce it to zero (over time) as you are moving the slide event. At a minimum, you shouldn’t have to reduce the size of the talking head. OTOH, I haven’t seen what you are doing – and it’s probably more professional than I’m thinking of.
What I do is have my slide event on the first video track, and then it overrides the lower events anyway, so you wouldn’t have to mess with the talking head at all…
Still looking forward to other comments…