system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why are TV shows/movie typically displayed in 24/48 fps, while video games are typically displayed in 30/60 fps?
gpt
Film movies play at 24fps because that was the number that was picked more or less arbitrarily when they needed movies to play at a set speed so they could add sound to them. 

TV was historically at 30fps in the US because the TV signal was synced to the frequency of the power going into the TV set.  The US electrical system runs at 60 cycles per second and broadcast TV transmitted half a screen worth of data every cycle so you got 30fps from that. In other countries 50hz power was the standard so their analog TV standard was 25fps.

HDTVs can run at a higher framerate, but a lot of the stuff that's being transmitted over HD was recorded at 30(or 25)fps.  Movies can (and do) run at higher speeds, but a lot of people don't like it because they associate the way films looked in the past with quality and the way that 30 or 60fps looks like a TV news show or something.

Video games aren't burdened by these legacy issues and are sold on the basis of their technical features to a much greater extent, so it's reasonable that they'd be where you see 60fps first.