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How much is too much?

Discussion in 'General Tech Help & CD Burning Help' started by catgoat1792, Apr 23, 2002.

  1. catgoat1792

    catgoat1792 New Member

    someone told me i can ACE, then ZIP, then RAR an iso to get maximum compression. Is this damaging to the file at all, or is it okay to triple compress?
  2. Gear

    Gear New Member

    Just compress once, don't waste your time.
  3. ExCyber

    ExCyber Staff Member

    It's not damaging to the file at all, but it is damaging to the sanity of people who want to use them. There's also no guarantee that you won't end up increasing the file size. This seems counterintuitive, but it's pretty much a mathematical certainty that any given compression algorithm can never compress all possible input streams, so you might just end up adding the dictionary/header/signature overhead.
  4. archiver

    archiver New Member

    I think the source code for MAME is the only thing I've ever seen to benenfit from double compression (zip).

    I zip rar files simply to serve as a wrapper (set in "store" setting), simply because I've had one too many rar archives go bad. [​IMG]
  5. ExCyber

    ExCyber Staff Member

    I'm pretty sure that the MAME source double-ZIP thing is just a hack to make it the ZIP equivalent of a solid archive. Since it's got lots of small files with substantial redundancy across those files (MAME uses a lot of macros, for instance; it's almost like its own programming language), it benefits from this.

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