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*'''[[WirelessHD]]''' *'''[[WirelessHD]]'''
*'''[[Digital Rights Management]]''' *'''[[Digital Rights Management]]'''
-*'''[[web]]''' +*'''[[WLAN]]'''
*'''[[streaming media]]''') *'''[[streaming media]]''')
-*'''[[CD]]''' +*'''[[CD]]'''
== Reference == == Reference ==

Revision as of 21:18, 13 August 2011

MPEG-4 is a patented collection of methods defining compression of audio and visual (AV) digital data.

It was introduced in late 1998 and designated a standard for a group of audio and video coding formats and related technology agreed upon by the ISO/IEC Moving Picture Experts Group (MPEG) under the formal standard ISO/IEC 14496.

Uses of MPEG-4 include compression of AV data for web (streaming media) and CD distribution, voice (telephone, videophone) and broadcast television applications. MPEG-4 absorbs many of the features of MPEG-1 and MPEG-2 and other related standards, adding new features such as (extended) VRML support for 3D rendering, object-oriented composite files (including audio, video and VRML objects), support for externally-specified Digital Rights Management and various types of interactivity.

AAC (Advanced Audio Codec) was standardized as an adjunct to MPEG-2 (as Part 7) before MPEG-4 was issued.

Also see


1. See Wikipedia MPEG-4 [1]

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