Style transfer is an interesting problem in machine learning where one image's style is imposed on another. This concept can be pushed even further to work on videos as well.
"Interactive Video Stylization Using Few-Shot Patch-Based Training" by Ondřej Texler, David Futschik, Michal Kučera, Ondřej Jamriška, Šárka Sochorová, Menglei Chai, Sergey Tulyakov, and Daniel Sýkora:
https://ondrejtexler.github.io/patch-based_training/