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Thread: Question about cso's and umd's

  
  1. #1
    nekoakuma is offline -Hacks Hacker
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    okay, so i know crap all about gamedevs and whatnot. but if game companies used cso or other compression methods before putting them onto umd's..couldn't they fit more into a game?

    or do they just give the files or whatever to sony who makes the iso or i dunno. someone explain how it works.

    anyway..yeah.

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  2. #2
    Scorpus is offline Senior Member -Hacks Titan
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    They keep games as ISO's on the UMD's because if they compressed them, the games playing speed would decrease because of the compression, leading to some games (especially car racing games) lagging. And it would increase loading times.

  3. #3
    nekoakuma is offline -Hacks Hacker
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    i thought some games changed the cpu speed when loaded.
    or at least had the ability to.
    (wasn't there a discussion about it before cfw's...)

    anyway, yeah.
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  4. #4
    p0op's Avatar
    p0op is offline Senior Member -Hacks Titan
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    An ISO is simply a copy of a disk image. CSO is just a compressed ISO.

    Like said before, compression of certain files would only slow down loading times. Some games do use compression, games such as GTA and such, that's where the .pad files come in to play. They're there to help the PSP load the game faster whenever it's played via UMD.

  5. #5
    superJT is offline -Hacks Smarty
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    i always compress my iso 2 cso files but does it really effect the gameplay that much do u think? my pes game i compressed and must admit seems a little slow is that due to me compressing it or just that the psp speed cant keep up with it? is it best to just leave games as iso files so they run better

  6. #6
    mattrey94's Avatar
    mattrey94 is offline -Hacks Hacker
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    Correct me if im wrong. didn't we (homebrew people) create CSO format and it is not really offiail. That's what I always thought.

  7. #7
    jmendes is offline -Hacks Enthusiast
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    a CSO on a disk would be too slow to load. If disk space is an issue they should use multiple disks.

  8. #8
    mattrey94's Avatar
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    I dont think they'll run out of space. a UMD can hold about 1.8 GB of space. Don't hink game will go past that. PSX games barly did.

  9. #9
    p0op's Avatar
    p0op is offline Senior Member -Hacks Titan
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    Quote Originally Posted by mattrey94
    I dont think they'll run out of space. a UMD can hold about 1.8 GB of space. Don't hink game will go past that. PSX games barly did.
    All the good games were multi disk.

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