Take a look around in the cyber underworld. Search and download a video file with uTorrent or Gnutella. What do you see? I see DivX everywhere. Online video piracy takes a couple of forms. You have the *.flv Flash format popularly seen at YouTube. Of course, you will find the uncompressed, mammoth *.iso files directly ripped from DVDs. Then, you have the smaller compressed versions of the *.iso files as various MPEG formats. Sometimes they are in the highly-redundant, DVD-native MPEG2 format or the cross-compatible MPEG1 format. Other times, they are in one of the newer types of MPEG4. DivX, Xvid, and other MPEG4 formats have become staples in both the cyber underworld and the mainstream Internet. Out of all these variations of MPEG4 formats, the most popular is undoubtedly DivX.
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