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  1. Member
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    Feb 2007
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    United States
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    hi, i want to compress some movies that i have as .iso files, to save some space, im not going to burn them for a while, which format should i use, 7z, zip, or rar

    thanks
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  2. Member Marvingj's Avatar
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    Apr 2004
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    Death Valley, Bomb-Bay
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    I used rar because its smaller.....
    http://www.absolutevisionvideo.com

    BLUE SKY, BLACK DEATH!!
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  3. ISO images of movie DVDs will not compress by much.
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  4. Member
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    Dec 2004
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    Australia
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    Usually 7z compresses the most, followed by rar with zip in last. As said though I wouldn't expect much of a gain and compressing a ~4GB file could take some time.
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  5. Always Watching guns1inger's Avatar
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    Miskatonic U
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    You are talking small degrees of compression in comparison to each other. If you must store ISOs, buy a big external drive. Either that, or burn them to disc or re-encode using a better video compression method.
    Read my blog here.
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  6. Member
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    Feb 2007
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    ok thanks guys, how do you know what types of files will compress better than others?
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