MPEG-5 Essential Video Coding (EVC) is a current

video compression standard A video coding format (or sometimes video compression format) is a content representation format for storage or transmission of digital video content (such as in a data file or bitstream). It typically uses a standardized video compression algori ...

that has been completed in April 2020 by decision of MPEG Working Group 11 at its 130th meeting. The standard consists of a royalty-free subset and individually switchable enhancements.

Concept

The publicly available requirements document 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. * The "enhanced" set consists of 21 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

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s. 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 A license (or licence) is an official permission or permit to do, use, or own something (as well as the document of that permission or permit). A license is granted by a party (licensor) to another party (licensee) as an element of an agreeme ...

complications occur around a specific tool, without breaking compatibility with already deployed decoders. A proposal by

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Huawei Huawei Technologies Co., Ltd. ( ; ) is a Chinese multinational technology corporation headquartered in Shenzhen, Guangdong, China. It designs, develops, produces and sells telecommunications equipment, consumer electronics and various smar ...

and Qualcomm forms the basis of EVC.

Implementations

* XEVE (eXtra-fast Essential Video Encoder) is self-described as a fast open source EVC encoder. It is written in

C99 C99 (previously known as C9X) is an informal name for ISO/IEC 9899:1999, a past version of the C programming language standard. It extends the previous version ( C90) with new features for the language and the standard library, and helps impl ...

and supports both the baseline and main profiles of EVC. Its license is a custom

3-clause BSD license BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. This is in contrast to copyleft licenses, which have share-alike requirements. The original BSD lice ...

MPAI-EVC standard

Moving Picture, Audio and data Coding by AI uses: MPEG-5 Essential Video Coding in its project: MPAI - Enhanced Video Coding. This Project aims to significantly enhance the performance of the traditional video codec MPEG-5 EVC by improving or replacing traditional tools with AI-based tools. The goal of the MPAI group is to enhance MPEG-5 EVC using AI-tools to reach at least 25% improvement over the baseline profile of EVC. More preciesely MPAI-EVC Evidence Project is just to reach at least 25% improvement over the baseline profile of EVC. The main goal of MPAI-EVC propper project: Final Standard will attempt to reach at least 35-50% improvement over state of the art traditional EVC. ("State of the art" may suggest challenging Main Profile of EVC.) Since Base Profile is free of patents fees; therefore there should be no patent issues hindering development from legal side.

References

External links

Text of the standard on the ISO website
(feature freeze (''FDIS'' status) as of August 2020) MPEG Video compression Video codecs {{measurement-stub

Concept

Implementations

MPAI-EVC standard

See also

References

External links