MPEG

This term refers to a specific technical standard for digital compression. In a professional or technical context, it is often used as a shorthand for any file adhering to the Moving Picture Experts Group standards, though it specifically implies a balance between file size and playback quality.

Because it is a technical acronym, it is typically treated as a countable noun when referring to individual files (e.g., "three mpegs"), but it can function as an uncountable modifier when describing the format itself (e.g., "the mpeg standard").