I wonder if they're going to license this to brands for heavily personalized advertisement. Imagine being able to see videos of yourself wearing clothes you're buying online before you actually place the order, instead of viewing them on a model. If they got the generation "live" enough, imagine walking past a mirror in a department store and seeing yourself in different clothes. Wild times.
I'm fairly certain there is a scene in Minority Report just like this! Or at least, the advertisement says Tom Cruise's character's name. https://en.wikipedia.org/wiki/Minority_Report_(film)
https://adage.com/article/digital-marketing-ad-tech-news/car...
A little creepy, but very much in this vein.
We probably haven't even scratched the surface of what will be done with this tech. When video becomes "easy", "quick", "affordable", and "automatable" (something never before possible on any of those dimensions) - it enables countless new things to be done.