4 ms·

Demos used to have sizes - I can't see one for this, is it just an 'open' category? This thing is far too insane to be size limited, surely?

tetrisgm 6mo ago
Edit: better answer below Idk what Revision actually enforces but that used to be the rule at Assembly. For the 1k, 4k, retro systems etc it’s specified!
- skrebbel 6mo ago
  Revision had no maximum filesize in the demo compo.
  - SteltekOne 6mo ago
    Demos were limited to 2GiB. Size-coding competitions, like PC Intros, were of course limited to the size of their respective category (256 Byte, 4K, 8K, 64K).
skrebbel 6mo ago
In demoscene nomenclature, an "intro" is a demo with a sizelimit. This was entered in the demo compo, ergo "no size limit". 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 https://www.pouet.net/prod.php?which=105954 has a download link
- whizzter 6mo ago
  30 megs is like 2005 era size :D , obvious that it's realtime stuff (and music is probably a significant fraction?).
  - embedding-shape 6mo ago
    > The Razor1911 zip[1] is 30MB, which actually is very much on the small side for a current-day demo. > 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,
    - crtasm 6mo ago
      from the nfo >Sorry for the not very optimized file size for this party version, we'll make sure to push a PROPER once Revision 2026 is finished
    - skrebbel 6mo ago
      Love the 69MB of zeros.
      - embedding-shape 6mo ago
        I bet that neatly compresses during packaging too :)
    - whizzter 6mo ago
      Seems about right then, my guess was about a third for music, classic 128kbps mp3's are at about a meg a minute (960kb/m) so this is at a slightly higher bitrate. Not sure how compressible those parts are but between half and a third in the end depending on the final compressor checks out.
richrichardsson 6mo ago
This came up in the Discord party chat, basically there isn't a size limit in the rules[1], but going beyond 2GB would be concerning that it's not a real-time demo but instead just playback of animation. [1] https://2026.revision-party.net/competitions/pc/ https://2026.revision-party.net/competitions/pc/

tetrisgm 6mo ago

Edit: better answer below Idk what Revision actually enforces but that used to be the rule at Assembly. For the 1k, 4k, retro systems etc it’s specified!

skrebbel 6mo ago
Revision had no maximum filesize in the demo compo.
- SteltekOne 6mo ago
  Demos were limited to 2GiB. Size-coding competitions, like PC Intros, were of course limited to the size of their respective category (256 Byte, 4K, 8K, 64K).

skrebbel 6mo ago

In demoscene nomenclature, an "intro" is a demo with a sizelimit. This was entered in the demo compo, ergo "no size limit". 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 https://www.pouet.net/prod.php?which=105954 has a download link

whizzter 6mo ago
30 megs is like 2005 era size :D , obvious that it's realtime stuff (and music is probably a significant fraction?).
- embedding-shape 6mo ago
  > The Razor1911 zip[1] is 30MB, which actually is very much on the small side for a current-day demo. > 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,
  - crtasm 6mo ago
    from the nfo >Sorry for the not very optimized file size for this party version, we'll make sure to push a PROPER once Revision 2026 is finished
  - skrebbel 6mo ago
    Love the 69MB of zeros.
    - embedding-shape 6mo ago
      I bet that neatly compresses during packaging too :)
  - whizzter 6mo ago
    Seems about right then, my guess was about a third for music, classic 128kbps mp3's are at about a meg a minute (960kb/m) so this is at a slightly higher bitrate. Not sure how compressible those parts are but between half and a third in the end depending on the final compressor checks out.

richrichardsson 6mo ago

This came up in the Discord party chat, basically there isn't a size limit in the rules[1], but going beyond 2GB would be concerning that it's not a real-time demo but instead just playback of animation. [1] https://2026.revision-party.net/competitions/pc/ https://2026.revision-party.net/competitions/pc/