2. MPEG / MPG / MPA / DAT format (. Dat. Vob. Mepg, etc.) (coded mepg1 2 4)
Is the Moving Pictures Experts Group (Moving Picture Experts Group) is an abbreviation, by the International Organization for Standardization ISO (International Standards Organization) and IEC (International Electronic Committee) jointly established in 1988, dedicated to the moving images (MPEG video) and Audio Coding (MPEG Audio) standardization. MPEG motion picture compression algorithm is the international standard, is now almost all computer platforms common support. MPEG compression standard is designed for moving images, and its basic method is: in the unit time to collect and save the first frame of information, and then store the rest of the frame only to the relative change in the first frame part, so as to achieve the purpose of compression. MPEG, the average compression ratio of 50:1 up to 200:1, the high compression efficiency is obvious. At the same time the quality of picture and sound very good, and there is a uniform standard PC formats, the compatibility is very good. MPE standards include MPEG video, MPEG audio and MPEG systems (video, audio sync) in three parts, MP3 audio files is MPEG audio, a typical application, and Video CD (VCD), Super VCD (SVCD), DVD (Digital Versatile Disk ) is the full adoption of MPEG technology give rise to a new consumer electronic products.