Wait...yes I think you’re right, movies are a sliver slower than 24 fps, it’s like 23.997, or something, for the super geeks.
And Hollywood is super particular about it.
Yes, that’s correct.
(Most) Film is played back at 24 fps.
Video is mostly encoded at and meant to be played back at 29.97 fps.
The ATSC standard allows for 23.976 fps, which I assume is meant to be used for playback and broadcasting of film at a frequency that is compatible with the 29.97 fps frequency used for video.
This is a bit of a pain in the ass for the broadcast industry, as they need to track exact running times, but at 29.97 fps, 30 frames actually takes slightly over a second to play out. They use something called “drop frame” counting to skip 2 frames in the time code (HH:MM:SS:FF, where FF is the frame count, usually 0-29) at the start of each minute, except for the ones evenly divisible by 10 (so not at the 10, 20, 30... minute marks).