With file size, most democoders go all the way, both ways. By that I mean that if they choose a sizelimit category, they squeeze out every last byte, and if they don't, most don't care about filesize at all. There's demos these days that are many times bigger than an acceptable video recording would be because nobody bothered to eg compress the assets, it includes an entire game engine, etc. Like 800MB for a 3 minute audiovisual show. Kinda ridiculous but it's just.. well, call it either laziness or focused pragmatism :-) Gotta get that prod out before the deadline!
The Razor1911 zip[1] is 30MB, which actually is very much on the small side for a current-day demo.
[1] https://www.pouet.net/prod.php?which=105954 has a download link
> and music is probably a significant fraction?
For the Razor1911.exe in the ZIP which ends up being 31MB on disk, which is almost entirely made out of a compressed 145MB executable, whose size is mostly 48 PNG files (11MB), 69MB of zeros (nice?), 329 compiled DirectX shader blobs (DXBC) totaling 6MB, One large MP3 of about 17MB and finally like 34MB of what seems to be other types of runtime data like asset tables, font and UI data,
Idk what Revision actually enforces but that used to be the rule at Assembly.
For the 1k, 4k, retro systems etc it’s specified!