MPEG-2  - Standard for coding of moving pictures and associated audio, typically using the 4 to 9 Mbps bandwidth range (but can produce data between 1.2 and 15 Mbps.) MPEG-1 enabled video on a CD-ROM. MPEG-2 became the basis for DVDs and digital TV.  It provides broadcast-quality video and includes separate specifications for audio and video. This is sufficient for all the major TV standards, including NTSC and HDTV.  http://en.wikipedia.org/wiki/MPEG-2

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MPEG