mpeg is a video format. 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 operating environment of this article: Windows 7 system, Dell G3 computer.
mpeg is a video format.
Some experts have separated the recording of sound and images from traditional analog methods, established the ISO/IEC11172 compression coding standard, and formulated the MPEG-format, bringing audio-visual communication into the digital era. The MPEG-X version that everyone refers to now is the compression standard for video, audio, and data formulated and released by ISO.
MPEG standard video compression coding technology mainly uses inter-frame compression coding technology with motion compensation to reduce temporal redundancy, uses DCT technology to reduce spatial redundancy of images, and uses entropy coding to Reduces statistical redundancy in information representation. The comprehensive application of these technologies greatly enhances compression performance.
Extended information:
Advantages of MPEG format:
1. Especially designed for low bandwidth and other conditions algorithm, so MPEG4 has a higher compression ratio, making low-bitrate video transmission possible. Video can be continuously transmitted over public telephone lines and maintain image quality, which is something other technologies cannot do.
2. Save storage space. Under the same conditions such as scene, image format and compression resolution, the smaller the encoded image file is, the smaller the storage space it takes up. Since the MPEG-4 algorithm is more optimized than MPEG-1 and MPEG-2, it has higher compression efficiency.
3. The image quality is good. The highest image definition of MPEG4 is 768X576, which is far better than the 352X288 of MPEG1, and can achieve a picture effect close to that of DVD. This makes its images very good in high definition.
Related free learning recommendations: php programming (video)
The above is the detailed content of What format is mpeg. For more information, please follow other related articles on the PHP Chinese website!