What is the MPG format, how to open and play

　　MPEG Format: Its English is all called Moving Picture Expert Group, that is, the motion image expert groups format, the home often see VCD, SVCD, DVD is this format. MPEG file format is the international standard of motion image compression algorithm, it uses the lossy compression method to reduce the redundant information in the motion image, and it is more clear that the MPEG compression method is based on the majority of the adjacent two images are the same, the subsequent image and the previous image has a redundant part of the removal, To achieve the compression purpose (its maximum compression ratio can reach 200:1). Currently, MPEG format has three compression standards, respectively, MPEG-1, MPEG-2, and MPEG-4, in addition, MPEG-7 and MPEG-21 are still in the research and development phase.

　　MPEG-1: established in 1992, it is an international standard designed for digital storage media motion images and their sound codes for 1.5Mbps of the following data transmission rates. That is, we usually see the VCD production format. Using the MPEG-1 compression algorithm, you can compress a 120-minute movie to around 1.2GB. File extensions in this video format include. dat files in. mpg,. MLV,. MPE,. mpeg and VCD discs.

　　MPEG-2: developed in 1994, the design objectives for the advanced Industrial standard image quality and higher transmission rate. This format is mainly used in the production of DVD/SVCD (compression) aspects, while in some HDTV (high-definition TV broadcast) and some high requirements of video editing, processing also has a considerable application. Using the MPEG-2 compression algorithm, you can compress a 120-minute movie to a size of 4 to 8GB. File extensions in this video format include. vob files on. mpg,. MPE,. mpeg,. M2V, and DVD discs.

　　MPEG-4: developed in 1998, MPEG-4 is designed to play high-quality video streaming media, which utilizes a narrow band, uses frame-rebuilding techniques, compresses and transmits data to achieve the best image quality with minimal data. The most attractive part of the current MPEG-4 is its ability to keep small volumes of video files close to DVD quality. In addition, this file format includes some special features such as bit-rate scalability, animation sprites, interactivity, and even copyright protection that were not available in previous MPEG compression standards. The file extensions for this video format include. asf,. mov, and DivX avi.

　　small hint: Careful user must notice, this middle how not MPEG-3 code? In fact, the familiar MP3 is the use of MPEG-3 (MPEG Layeur3) coding.

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