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I just finished reading an interesting article by Amir Majidimehr (former Microsoft VP, video compression) in Oct 2008 issue of Widescreen Review.  I was surprised that there are 4 different, incompatible versions of MPEG-4! Here are some facts from the article; I recommending picking up a copy of the magazine for all of the details and background. MPEG-2 was created in 1993 and gave great improvements of JPEG. Real Video and Windows WMV-9 were alternative compression codecs created for internet video streaming and are about 200% to 300% more efficient than MPEG-2. The MPEG association wanted to get into this segment and created MPEG-4 (laterRead More →