Great. We agree that a video of realistic CGI 3D animated model human character is not practical at this point in time but AI might eventually make the model. And that answers my initial question.  I was a bit vague and after this discussion I am realising the specific thing I had in mind.

For the model: I did want realistic and I plan to get that in the future. I am now in the present and will take what realisim is available. I want human. I do not want space aliens and talking toys.

For AI: I would like end user to be able to use simple script commands to tell the model what to do. Like go there and pick up that. I remember hearing about such an existing program but it had primitive stick-figure models.

AI step up: I would like end user to be able to give model some traits and goals. Then see how it interacts with enviroment and other models. I remember hearing about such an existing program. It is AI simulator for preditor and prey. The characters are depicted as icons. A video can be made of this.  Evolving AIs - Predator vs Prey, who will win?  https://youtu.be/qwrp3lB-jkQ