"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

Took a look to links from your link to get to the 4K YT. At first I wasn't that impressed until I realized it was defaulting to 480p. The 2160 stream looks amazing. Sadly, being it's a YT stream, that might be the cleanest I've seen clips from that movie. Color me impressed as I go off to find the full movie like that.