The use of video coding:
In video coding, MPEG 1 (for VCD), MPEG-2 (for DVD) and MPEG-4 (for DVDRIP) are all its variants.
Such as: divx, xvid, etc. ，Mpeg4 AVC； Audio coding mainly includes MPEG audio layer 1/2, MPEG audio layer 3(mp3), MPEG-2 AAC, MPEG-4 AAC, etc.
Note: DVD audio does not use Mpeg.
Extended data:
MPEG format:
Its full English name is Moving Picture Expert Group, which is the format of moving picture expert group. VCD, SVCD and DVD that we often watch at home are all in this format. MPEG file format is the international standard of moving image compression algorithm, which uses lossy compression to reduce redundant information in moving images.
1, MPEG- 1: Formulated in 1992, it is an international standard designed for digital storage media moving images and audio coding with data transmission rate below 1.5Mbps, which is the VCD production format we usually see. The file extensions of this video format include. mpg，。 mlv，。 mpe，。 Mpeg and. Dat file in VCD.
2.MPEG-2: Based on 1994, the design goal is advanced industrial standard image quality and higher transmission rate. This format is mainly used for DVD/SVCD production (compression), as well as some HDTV (high definition television broadcasting) and some demanding video editing and processing. The file extensions of this video format include. mpg，。 mpe，。 mpeg，。 M2v and. Vob file on DVD.
3.MPEG-4:MPEG-4 was established by 1998 and is specially designed for playing high-quality video of streaming media. It can compress and transmit data with extremely narrow bandwidth through frame reconstruction technology, and obtain the best image quality with the least data. The most attractive thing about MPEG-4 is that it can save small-capacity video files close to DVD quality. The file extensions of this video format include. asf，。 Mov, DivX, AVI, etc.
Baidu Encyclopedia-Video Coding