What is the MPG file

MPG is a common video format, the MPEG standard mainly has the following five, MPEG-1, MPEG-2, MPEG-4, MPEG-7 and MPEG-21 and so on. MPG may be based on MPEG-1 (VCD) or MPEG-2 (DVD) of any compression standard, MPEG standard video compression coding technology mainly utilizes the motion compensation frame compression coding technology to reduce the time redundancy, using the DCT technology to reduce the spatial redundancy of the image, Using entropy coding, the statistical redundancy is reduced in the representation of information. The comprehensive application of these technologies greatly enhances the compression performance.