What does mpg format mean?

mpg format is a video file format. The full name of mpg is MPEG, which is the Moving Picture Experts Group. It is the international standard for moving image compression algorithm and is now supported by almost all computer platforms; the file extension of MPEG format video is usually MPEG or MPG.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

mpg format is a video file format

MPG, also known as MPEG (Moving Pictures Experts Group), is the Moving Picture Experts Group, established by the International Organization for Standardization ISO (International Standards Organization) and IEC (International Electronic Committee) were jointly established in 1988, dedicated to the standardization of moving images (MPEG video) and its accompanying sound coding (MPEG audio).

MPEG is the international standard for moving image compression algorithms and is now supported by almost all computer platforms in the 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 VCDs use MPEG-1 format compression. MPEG-2 is used in DVD (Digital Video/Versatile Disk) production, HDTV (High Definition Television Broadcasting) and some high-demand video editing and processing. MPEG-4 is a new compression algorithm. The ASF format using this algorithm can compress a 120 min long movie into a video stream of about 300 MB, which can be watched online.

The file extension of MPEG format video is usually MPEG or MPG.

MPG, one of the professional terms in basketball and other sports, is the abbreviation of minute per game, which means the average playing time of a player per game.

MPEG standards mainly include the following five, MPEG-1, MPEG-2, MPEG-4, MPEG-7 and MPEG-21, etc. The expert was established in 1988 and is responsible for establishing video and audio standards for CDs. Its members are technical experts in the fields of video, audio and systems. Later, they successfully separated the recording of sound and images from the traditional analog method, established the ISO/IEC1172 compression coding standard, and formulated the MPEG-format, bringing audiovisual communication into the digital era. Therefore, the MPEG-X version that everyone refers to now is the video, audio, and data compression standard formulated and released by ISO (International Organization for Standardization).

mpg conversion

The MPEG standard video compression coding technology mainly uses inter-frame compression coding technology with motion compensation to reduce temporal redundancy, and uses DCT technology to reduce the image space Redundancy, the use of entropy coding reduces statistical redundancy in information representation. The comprehensive application of these technologies greatly enhances compression performance.

MPEG-1

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

The MPEG-2 standard was announced in 1994, including the system part numbered 13818-1, the video part numbered 13818-2, the audio part numbered 13818-3 and the compliance part numbered 13818-4 Test part.

MPEG-2

The MPEG-2 coding standard hopes to include coding standards in various fields of digital television and image communications. MPEG-2 is divided into five types according to different compression ratios. Each profile is divided into four image formats, or levels, according to different image definitions. There are 20 combinations of five grades and four levels, but some combinations are unlikely to appear in actual applications, and 11 combinations are more commonly used. These 11 combinations are used in different situations. For example, MP@ML (main profile and main level) is used in SDTV with studio quality standard definition TV. The US HDTV major alliance uses MP@HL (main profile and high level). .

MPEG-4

MPEG-4 began research in July 1995 and was approved as an official standard by ISO/IEC in November 1998. The official standard number is ISO /IEC14496, which not only targets video and audio coding at a certain bit rate, but also pays more attention to the interactivity and flexibility of multimedia systems. This standard is mainly used in video phone calls, video emails, etc. It has lower transmission rate requirements, between 4800-6400 bits/s, and a resolution of 176*144. MPEG-4 uses a very narrow bandwidth and uses frame reconstruction technology and data compression to obtain the best image quality with the least data. Using the high compression rate and high image restoration quality of MPEG-4, you can convert the MPEG-2 video files in the DVD into smaller video files. After such processing, the video quality of the image does not drop much but the size can be reduced several times. CD-ROM can be easily used to save programs on DVD. In addition, MPEG-4 is also of great use in home photography and video recording and network real-time video playback.

MPEG-7

MPEG-7 (its origin is 1 2 4 = 7, because there are no MPEG-3, MPEG-5, and MPEG-6) began research in October 1996. To be precise, MPEG-7 is not a compression coding method. Its formal name is called 'Multimedia Content Description Interface. Its purpose is to generate a standard for describing multimedia content. This standard will provide certain explanations of the meaning of the information. The degree of freedom can be transmitted to, or retrieved by, devices and computer programs. MPEG-7 is not aimed at a specific application, but at the image elements standardized by MPEG-7. These elements will support as many applications as possible. The starting point for establishing the MPEG-7 standard is to rely on numerous parameters to classify images and sounds, and to query their databases, just like we query text databases today. Can be used in digital libraries, such as image catalogs, music dictionaries, etc.; multimedia query services, such as telephone directories, etc.; broadcast media selection, such as radio and TV channel selection; multimedia editing, such as personalized electronic news services, media creation wait.

MPEG-21

MPEG proposed the concept of "Multimedia Framework" at the MPEG meeting in October 1999. The MPEG meeting in December of the same year determined the MPEG -21's official name is the "Multimedia Framework" or "Digital Audiovisual Framework", which aims to integrate standards to support coordinated technologies to manage multimedia commerce. The purpose is to understand how to bring different technologies and standards together and what new requirements are needed. standards and complete the combination of different standards.

Format conversion

Electronic products that support mpg format Because there are multiple versions of MPG, when we use a certain software to play video files in MPG format, sometimes it can be played normally, and sometimes it cannot. For example, when using VideoStudio for video editing, VideoStudio can play the video image of MPG video, but sometimes the sound in the video file cannot be played. In this case, we need to use format conversion software to convert the video format. Such as: Happy Video Converter. After conversion with Happy Video Converter, although the file is still in MPG format, the image will be blurry and the length and width will be smaller, and the file will be reduced by more than half. But now you can use VideoStudio to play the sound and listen to the sound. If you don't want to edit, but just show it, use Super Jieba to play it and don't convert the original file format.

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