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Editor to share with you what the mpg format means, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Mpg format is a video file format. Mpg, whose full name is MPEG, is the international standard of moving image compression algorithm, which has been supported by almost all computer platforms; the file extension of MPEG format video is usually MPEG or MPG.

The operating environment of this tutorial: windows10 system, Dell G3 computer.

Mpg format is a video file format

MPG, also known as MPEG (Moving Pictures Experts Group), or moving Picture expert Group, was jointly established by ISO (International Standards Organization) and IEC (International Electronic Committee) in 1988, specializing in the standardization of moving pictures (MPEG video) and its associated audio coding (MPEG audio).

MPEG is the international standard of moving image compression algorithm, which has been supported by almost all computer platforms in mpg format. It includes MPEG-1,MPEG-2 and MPEG-4. MPEG-1 is widely used in the production of VCD (video compact disk), and the vast majority of VCD is compressed in MPEG-1 format. MPEG-2 is used in DVD (Digital Video/Versatile Disk) production, HDTV (High definition Television Broadcasting) and some demanding video editing and processing. MPEG-4 is a new compression algorithm. Using the ASF format of this algorithm, a movie with a length of 120 min can be compressed to a video stream of about 300m, which can be watched on the Internet.

The file extension for video in MPEG format is usually MPEG or MPG.

MPG, one of the technical terms for basketball and other sports, is an abbreviation for minute per game, which refers to the average playing time of a player per game.

There are mainly five MPEG standards, MPEG-1, MPEG-2, MPEG-4, MPEG-7 and MPEG-21. The expert was established in 1988 to establish video and audio standards for CD, and its members are technical experts in the fields of video, audio and systems. After that, they successfully separated the recording of sound and video from the traditional analog method, established the ISO/IEC1172 compression coding standard, and developed the MPEG- format, which made the audio-visual communication enter the digital era. Therefore, the MPEG-X version we are generally referring to is the compression standard for video, audio and data issued by ISO (International Organization for Standardization).

Mpg conversion

The video compression coding technology of MPEG standard mainly uses interframe compression coding technology with motion compensation to reduce time redundancy, DCT technology to reduce image spatial redundancy, and entropy coding to reduce statistical redundancy in information representation. The comprehensive application of these technologies greatly enhances the compression performance.

MPEG-1

The MPEG-1 standard was officially published in 1992. The code number of the standard is ISO/IEC11172, and its title is "coding of moving images and their accompanying sounds in digital storage media with a bit rate of about 1.5Mb/s".

The MPEG-2 standard was published in 1994, including the system section numbered 13818-1, the video portion numbered 13818-2, the audio portion numbered 13818-3 and the conformance test section numbered 13818-4.

MPEG-2

The MPEG-2 coding standard hopes to include the coding standards in the fields of digital television and image communication. MPEG-2 is divided into five grades (profile) according to the different compression ratio, and each level is divided into four image formats, or level, according to the definition of the image. There are 20 combinations of five grades and four levels, but some combinations are unlikely to appear in practical application, and 11 combinations are more commonly used. These 11 combinations are used in different situations, such as MP@ML (main grade and master level) is used in SDTV with studio quality standard, and MP@HL (main grade and high level) is adopted by American HDTV Alliance.

MPEG-4

MPEG-4 began its research in July 1995 and was approved as a formal standard by ISO/IEC in November 1998. the official standard number is ISO/IEC14496. It not only aims at video and audio coding at a certain bit rate, but also pays more attention to the interaction and flexibility of multimedia systems. This standard is mainly used in video phone, video e-mail and so on. The transmission rate is low, and the resolution is 176-144 between 4800-6400bits/s. MPEG-4 uses very narrow bandwidth, through frame reconstruction technology, data compression, in order to use the least data to obtain the best image quality. Using the high compression rate and high image restoration quality of MPEG-4, the MPEG-2 video files in DVD can be converted into smaller video files. After this processing, the video quality of the image is not greatly reduced, but the volume of the image can be reduced by several times, so it is convenient to use CD-ROM to save the programs on DVD. In addition, MPEG-4 also has great opportunities to display its talents in home photography videos and real-time video broadcasting on the Internet.

MPEG-7

MPEG-7 (its origin is 1-2-4-7, because there is no MPEG-3, MPEG-5, MPEG-6) began to study in October 1996. To be exact, MPEG-7 is not a compression coding method, its formal name is "Multimedia content description Interface". Its purpose is to generate a standard for describing multimedia content, which will provide a certain degree of freedom in the interpretation of the meaning of information, which can be transmitted to devices and computer programs, or accessed by devices or computer programs. MPEG-7 is not for a specific application, but for image elements that have been standardized by MPEG-7, which will support as many applications as possible. The starting point of establishing MPEG-7 standard is to rely on many parameters to classify images and sounds, and to query their databases, just as we query text databases today. It can be used in digital libraries, such as image cataloging, music dictionaries, etc.; multimedia inquiry services, such as telephone directory; broadcast media selection, such as radio and television channel selection; multimedia editing, such as personalized electronic news services, media creation, etc.

MPEG-21

MPEG put forward the concept of "multimedia framework" at the MPEG conference in October 1999. the MPEG conference in December of the same year determined that the official name of MPEG-21 is "multimedia framework" or "digital audio-visual framework". It aims to integrate standards to support coordinated technology to manage multimedia commerce. The goal is to understand what new standards are needed to combine different technologies and standards and to complete the work of combining different standards.

Format conversion

Electronic products that support mpg format because there are multiple versions of MPG, sometimes we can play video files in MPG format with some software, but sometimes we can't. For example, when editing a video with a meeting shadow, the meeting will reflect the video image of the MPG video, but sometimes the sound in the video file cannot be played out, so we need to use the format conversion software to convert the video format. Such as: happy video and audio converter. After conversion with the Happy Video / Audio Converter, although the file is still in MPG format, the image will be blurred and the length and width will be smaller, and the file will be more than half smaller. But at this time, you can play the sound with the sound to listen to the sound. If you don't want to edit it, just show it, play it with Super Decoder, and don't convert the original file format.

The above is all the content of this article "what does mpg format mean?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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