Hi Clive, Compression works principally by finding patterns of repeated bits and replacing them with an copy of the pattern and a count of how many times the pattern is repeated. So a file with a lot of spaces in it, or an mp4 video with large areas of the screen all the same colour will compress down very nicely. However, if the file you are trying to compress contains little repetition such as an executable program file, then you will get very little compression.
What was the file you were trying to compress? Regards, Carlo On 26/06/2012, at 13:55 , Clive Slater wrote: > Hi > > OSX 10.4.11 g4, > > Trying to compress a 37mb file using archive does not compress the > file , turns it into a .zip but the file size is the same size. What > am I missing. > > Regards > > Clive > -- The WA Macintosh User Group Mailing List -- > Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> > Settings & Unsubscribe - > <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug> -- The WA Macintosh User Group Mailing List -- Archives - <http://www.wamug.org.au/mailinglist/archives.shtml> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml> Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
