MPEG-4

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-'''[[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.+'''[[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.

Revision as of 09:14, 6 April 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.


Reference

1. See Wikipedia MPEG-4 [1]


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