MPEG stands for "Moving Picture Experts Group." The MPEG organization develops standards for digital audio and video compression.

The term MPEG also 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.
The three most common are MPEG-1 (Video CDs), MPEG-2 (DVD, Digital TV), and MPEG-4 (All Inclusive).