This article is from the MPEG FAQ, by Frank Gadegast phade@cs.tu-berlin.de with numerous contributions by others.
In fact, MPEG is a nickname. The official title is: ISO/IEC JTC1 SC29 WG11.
ISO: International Organization for Standardization
IEC: International Electrotechnical Commission
JTC1: Joint Technical Committee 1
SC29: Sub-committee 29
WG11: Working Group 11 (moving pictures with... uh, audio)
 
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