Английская Википедия:Essential Video Coding

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Шаблон:Short description

Шаблон:Infobox technology standard

MPEG-5 Essential Video Coding (EVC) is a current video compression standard that has been completed in April 2020 by decision of MPEG Working Group 11 at its 130th meeting.[1][2][3] [4]

The standard consists of a royalty-free subset and individually switchable enhancements.[2][3][5]

Concept

The publicly available requirements document[5] outlines a development process that is defensive against patent threats: Two sets of coding tools, base and enhanced, are defined:

  • The base consist of tools that were made public more than 20 years ago or for which a Type 1 declaration is received. Type 1, or option 1, means "royalty-free", in the nomenclature used in ISO documents.[6]
  • The "enhanced" set consists of 21[7] other tools which have passed an extra compression efficiency justification and which can be disabled individually.

Each of the 21 payable tools can have separately acquired and separately negotiated and separately Traded License agreements. [7] Each can be individually turned off and, when necessary, replaced by a corresponding cost free baseline profile tool. This structure makes it easy to fall back to a smaller set of tools in the future, if, for example, licensing complications occur around a specific tool, without breaking compatibility with already deployed decoders. [7]

A proposal by Samsung, Huawei and Qualcomm forms the basis of EVC.[8]

Implementations

  • XEVE (eXtra-fast Essential Video Encoder)[9] is self-described as a fast open source EVC encoder. It is written in C99 and supports both the baseline and main profiles of EVC. Its license is a custom 3-clause BSD license.

MPAI-EVC

MPAI aims to significantly enhance the performance of EVC by improving or replacing traditional tools with AI-based tools, with the goal of reaching at least 25% improvement over the baseline profile of EVC.[10][11][12]

See also

References

Шаблон:Reflist

External links

Шаблон:Compression formats

Шаблон:Film-tech-stub Шаблон:Measurement-stub

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ibc не указан текст
  2. ↑ 2,0 2,1 Ошибка цитирования Неверный тег <ref>; для сносок meeting125 не указан текст
  3. ↑ 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок intro не указан текст
  4. ↑ Шаблон:Cite web
  5. ↑ 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок req не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок iso-speak не указан текст
  7. ↑ 7,0 7,1 7,2 Шаблон:Cite journal
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок 3codecs не указан текст
  9. ↑ Шаблон:Cite web
  10. ↑ Шаблон:Cite web
  11. ↑ Шаблон:Cite web
  12. ↑ Шаблон:Cite web
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