Comment by Animats

That's a good training set for animation AIs. Image generators are terrible at mechanical understanding at the moment. That needs to be fixed.

AI videos of steam trains make a horrid mess of the engine linkages. Some wheels rotate in the wrong direction. Wheels rotate on stationary locomotives. Just keeping rails in parallel is beyond many Stable Diffusion type systems. Trackwork with switches is just rails all over the place. Some videos can't even keep the train wheels on the track.

Pseudo-historical AI generated videos on machinery related subjects are awful. I saw one recently on rolling mills. There are blatant errors. Some rolls are turning in the wrong direction. Useless rolls facing sideways to the direction of slab travel. Gears that don't do anything. Steel entering rolls headed for the roller, not the gap.[1]

That's for a rolling mill, which is a large but simple machine. AI misunderstanding of things with moving parts is even worse. There's now more AI slop about historical machinery in search results than real-world content.

[1] https://www.youtube.com/watch?v=ItWeqMpDpkk