MPEG

Stands for 'Moving Picture Experts Group.' The term MPEG refers to a type of multimedia file, which is denoted by the file extension '.mpg' or '.mpeg.' These files are compressed movies that can contain both audio and video. Though they are compressed, MPEG files maintain most of the original quality of the uncompressed movie. This is why many videos on the Web, such as movie trailers and music videos, are available in the MPEG format.