I wish someone would do this for a recently deceased OS X screen saver I loved.

Someone went through the film 2001: A Space Odyssey and re-created all of the computer screens, with animation.

It was a masterpiece of mid-century design and space-age optimism.

IIRC, the author got a cease-and-desist demand, and was left to languish and die when Macs went 64-bit only.

"HAL 9000". This blog has how to do it on modern machines: https://www.fluffytech.co.uk/fluff/the-hal-project/#top

general idea, rip the 4k vids from YT and use a video screensaver app