Advanced Video Coding: Difference between revisions

Revision as of 19:21, 4 September 2004

Revision as of 19:31, 4 September 2004

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H.264 is a name related to the [[ITU-T]] line of H.26x video standards, while AVC relates to its [[ISO]] MPEG roots. It is usual to call the standard as H.264/AVC, or AVC/H.264 to emphasize the common heritage. The name

H.26L, thatalso emphasizesrelated theto H.26xits inheritance[[ITU-T]] history, is far less common, but still used.

More recently, the JVT has been working on a corrigendum (a list of errata corrections) to the original standard. The drafting work on the corrigendum should be completed in May of 2004.

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H.264 is already widely used for videoconferencing, including its support in products of the two main companies in that market (Polycom and Tandberg). It has also been preliminarily adopted as a mandatory part of the future DVD specification known as HD-DVD, now under development by the DVD Forum. A number of broadcasters in Japan and Korea have announced future support for the codec, and it is under consideration for other broadcast use -- for example, it is under consideration in the United States' Advanced Television Systems Committee ([[ATSC]]) and in Europe's Digital Video Broadcast ([[DVB]]) standards bodies. In the wireless world, it is under consideration for adoption by the 3rd-Generation Partnership Project (3GPP).

Like many [[ISO]] video standards, H.264/AVC has a reference implementation, that can be freely downloaded. Its main concern is to give examples of H.264/AVC features, instead of being a useful application per se.

A tweaked variant of this codec is implemented in the form of the [[Sorenson codec]], as was found by an [[FFmpeg]] developer working on [[reverse-engineering]] the Sorenson codec.

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==External link==

*[http://www.vcodex.com/h264.html H.264/MPEG-4 Part 10 Tutorials]

*[http://bs.hhi.de/~suehring/tml/ H.264/AVC Software Coordination]

[[Category:Video codecs]]