system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do they get babies in movies and tv shows to "act"?

I was just watching a Breaking Bad episode where the baby starts crying and then she stops and I started wondering how they get babies to express the emotions they need.

EDIT: Most times the babies aren´t even looking at the camera angle or at an awkward spot, but they seem to be looking where they also should.
gpt
It's similar to how you get a baby to smile when getting pictures done. If you need them to cry, a little pinch works. If pinching babies isn't your cup of tea... have the mother leave the room, wait until they are hungry or tired, and so on.