What is MPEG4?
MPEG-4 is an ISO/IEC standard developed by MPEG (Moving Picture Experts Group), the committee that also developed the Emmy Award winning standards known as MPEG-1 and MPEG-2 (DVD adopts this standard for video application) MPEG-4 is a very efficient digital video compression standard, which can compress MPEG-2 video into about one eighth of its original size. Most video stream media is base on this technology, such as DivX, WMV, and so on.