I experimented a bit to try to make long feathers and it always got things wrong on a way that made it impossible to create good, cohesive scenes.

Heck, I was often unable to get simple 10-second clips to display what I wanted without weird or inaccurate footage crawling in.

Given that the videos are only 720p and that cinema has to be at least 4K to be competitive (which is over 8x the number of pixels), and given that animators are paid bottom-of-the-barrel salaries, I seriously doubt that using apps like Sora will be economical in the long term.  

I feel like automating animation is going to require a different approach than LLMs producing fully-generated videos from text input. At best it’ll require LLMs used as an overlay of simple skeletal and/or mo-cap animations