Can someone explain CSO's?

Discussion in 'PSP - Games & Content' started by sekhu, Jan 12, 2008.

  1. sekhu
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    sekhu moo?

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    I don't really get them, are they converted from ISOs? Most, well may be all, of the backups I've found are ISO format, not CSO. I assume the cso offers some space saving, so is it best to run CSOs or ISOs? Are there any advantages in using one over the other?

    Cheers
     


  2. arctic_flame

    arctic_flame GBAtemp ATMEGA8 Fan

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    CSOs are simply ISOs compressed with a fast algorithm. There's not many reasons not to use CSOs, but some games lag slightly when compressed (GTA is one).
     
  3. sekhu
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    sekhu moo?

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    all right, thanks for the quick response [​IMG]
     
  4. BoneMonkey

    BoneMonkey The cheese stash is a lie.

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    some games dont like to be compressed in CSO format and won't work properly or lag so you might have to stick to iso
     
  5. test84

    test84 GBAtemp's last ninja 2.

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    some games dont like to be compressed in CSO format and won't work properly or lag so you might have to stick to iso
     
  6. martin88

    martin88 GBAtemp Advanced Fan

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    Is there a list of games that cannot be compressed or will lag if compressed?
     
  7. [M]artin

    [M]artin .

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    I've never run into any problems when compressing an ISO into a CSO (with UMDGEN) and then running it on the PSP (but that's just my experience, I've also never played GTA).

    In fact, deleting the "Update" folder from the ISO (which you never need) and then compressing it into a CSO can save you quite a bit of space (hundreds of mb's from what I've done with it)...
     
  8. pitoui

    pitoui GBAtemp Advanced Fan

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    Is there an app where I can view my psp iso's to delete unwanted vids etc?
     
  9. martin88

    martin88 GBAtemp Advanced Fan

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    Try UMDGen. I use it to delete to UPDATE folder in every ISO.
     
  10. pitoui

    pitoui GBAtemp Advanced Fan

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    Thanks UMDGen works great.
    Is there a way to isolate videos(cut scenes etc) from the iso? I need to take off another 40megs off Pursuit force 2 to fit on my measly 1gb card.
     
  11. jalaneme

    jalaneme Female Gamer

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    removing the update from every game doesn't work for all games, games like gripshift won't boot if you do that, also some games that are compressed to cso tend to go really slow and effect gameplay, i just leave the isos as they are most of the time.
     
  12. myuusmeow

    myuusmeow GBAtemp Advanced Maniac

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    In UMDGen you can set a video as master and relink all the other videos to it.
     
  13. hollabackitsobi

    hollabackitsobi GBAtemp Advanced Fan

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    The lag thing is overrated. Sure it will lag if you have a slow memory stick and a your CPU set at 222 MHz, but if you buy a faster memory stick (I'd recommend a Sandisk Ultra II 4GB) and set your PSP's CPU to 333 MHz, you'll have no problems with anything. Plus, the space you save will be handy.
     
  14. myuusmeow

    myuusmeow GBAtemp Advanced Maniac

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    Very handy.
    For example:
    GTA LCS Ripped CSO = ~309mB
    GTA LCS Ripped ISO = ~630 or so mB (Same thing as the above but in regular ISO format)
    ~330 mB could be 2 more games such as Ratchet and Clank and Lemmings.
     
  15. jalaneme

    jalaneme Female Gamer

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    i have 4gb memory stick, plenty of space i tend not to rip anything from the game as i don't like incomplete isos, i don't mine reducing the file size to a lower quality for small games but not removing stuff, not that you can remove all of it anyway.
     
  16. imtony

    imtony GBAtemp Regular

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    Whats a good cso convertor? I only have 256 mb right now that i stole frmo my sister's camera =T
     
  17. arctic_flame

    arctic_flame GBAtemp ATMEGA8 Fan

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    Sure, everyone loves a battery life of 30 minutes (small exaggeration). (Also: GTA still lags on a fast card at 333 Mhz, but only GTA)
     
  18. [M]artin

    [M]artin .

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    UMDGEN [​IMG]

    (You can convert an ISO into a CSO and vice versa if need be)
     
  19. gweedyj

    gweedyj GBAtemp Regular

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    how much does a 4gig cost?
     
  20. martin88

    martin88 GBAtemp Advanced Fan

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    About $60 I think.