Interesting to see https://github.com/3b1b/manim where the YouTuber has created a software tool to automate his work.

> never thought some simple animation of moving a ball could take a whole night

yeah always surprising (more complexity that expected) when we look under the hood of any operation

> Can you name some example...

https://www.videoscribe.co/en/ is used by a few creators on YT, you must have seen their videos. I wonder who is building the tool itself.