This is the short version for now.
Have you given any thought to capturing freeze frames from your video and going from still to video when you want the dancers to animate?
Not sure if this is the type of thing that you are after but please check out my PE: Perspective Effects blog post
especially the second example demo'ing Bird Flying Out In Picture Frame.
That approach looks perfect. I’ll have to restudy the post a few times and adapt to my needs, but I think it’s a winner. Thanks so much for taking the time to respond!
Good news. Glad the suggestions look promising for the effect that you would like to create in Premiere Elements.
Please let me know if you need clarification on any of the steps that I detailed in the blog post referenced.