It deals with defining standards for data compression of moving images. Their work continues to JPEG, adding compression intercampo, extra compression potentially available based on the similarities between successive frames of moving images.

MPEG-1
Was designed to operate at 1.2 Mbit / sec., The speed of data from the CD-ROM, so they could play through video CD players. But the quality is not obtained enough for broadcast. A compression technology, part of the MPEG specification, that produces small, high-quality audio files by eliminating sound signals that the human ear cannot register. MP3 refers to the file format as well as the compression standard. To create an MP3 file, you need a ripper--a program that copies a song from a CD to your hard drive--and an encoder to convert the file to the MP3 format.

MPEG-2

Designed to cover up from VHS-quality HDTV, using algorithms and different levels of resolution of images. With data transfer rates between 1.2 and 15 Mbits / sec., There is great interest for digital transmission of TV signals. The coding is very complex, particularly because it is necessary that the decoding system at the reception is as simple and therefore cheap as possible.

The compression standard video signal used for digital TV, DVD, and television sets with small satellite dishes. This adaptive process, variable, for the speed of transmission of bits enables more bits to complex scenes involving a lot of movement, while reducing the number of bits for static scenes. MPEG stands for Moving Picture Experts Group (Group Moving Picture Experts).

MPEG-4

Advanced compression scheme finalized October 1998, designed to enable transmission and reception of high-quality audio and video over the Internet and next-generation mobile telephones; potentially enables mobile video phones, video e-mail, and cordless video cameras. Two major versions are MPEG-4 Simple Profile for low-resolution digital video content, usually for distribution over the Internet, and MPEG-4 AVC (Advanced Video Coding), which offers faster and higher-quality compression than MPEG-2 for HDTV content.