file compression

India
March 15, 2007 9:14am CST
i downloaded a file that was about 100 MB. it was a rar file which contained a video. when i extracted it, i found that the file size was 801MB. I have tried to compress a video file and was of no use.only a few MBs were reduced. can anyone please tell me how to compress a file like the one i just mentioned above???
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