This article explains what an MPEG file is and how to play it or convert it to another format.
A file with the MPEG file extension (pronounced "em-peg") is a video file from Moving Picture Experts Group.
Videos in this format are compressed using MPEG-1 or MPEG-2 compression. This makes MPEG files popular for online distribution: they can be streamed and downloaded faster than some other video formats.
The MPEG format can compress data so quickly that it does not keep all the frames of the video, but only the changes that occur between the frames.