i believe the topic starter is talking about frame rate. so, i just clarify about the film\'s framerate (aka movie\'s frame rate) compare to tv\'s frame rate like ntsc/atsc framerate, and refresh rate and pal\'s frame rate.
i am just bored you know.
i remember over 10 years ago, maybe 12 or 13 years ago, when i have internet at home for sometimes. i got bored, got so nerdy, that i look up about those somewhat technical stuffs about picture/video, and film/movie too on the internet. and yeah, it seems like back in the day, that\'s what i read too. they probably wanted to cut cost, so they uses 24fps instead of higher/faster framerate. i don\'t know when film been in theater, maybe in the 1930? 40s? 50? who knows, maybe from 60 to 80 years ago or longer. they still film at 24 fps.
in 2008, i remember chatting with some guy, and he said that back then, people test at what frame rate that is the lowest they can get away with that most people won\'t be able to tell there is judder on motion and stuff, and 24 fps is the lowest frame rate where they almost couldn\'t tell and that\'s the lowest frame rate they use for film. Again, to cut cost that\'s why they use the lowest 24 fps.
i guess 35 mm film back then are like very, very expensive or something. and 24 fps is only 1 second of motion. imagine filming and editing movies/films that are like 1 hour long or longer like 2 to 3 hours long. say there are 24 frames per second, 60 seconds per minute, and 60 minutes per hour...
Then imagine, developing those negatives and distributed to like hundred of theaters back then? now, there are like what around 3,000 to 4,000 theaters in america and in america only. and maybe each theaters get like 2 or 3 copies of that film\'s negatives? i dunno. imagine nowadays, those films get distributed around the world too. i can see why it\'s expensive.
no wonder why they didn\'t bother with like going with just 1 extra frame higher than 24 fps, like 25 fps. because the cost will be more expensive for movies that are around 1 to 3 hours long. so, they just stick with 24 fps even to this day.