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.
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
Accounts payable (AP) is money owed by a business to its suppliers shown as a liability on a company's balance sheet. It is distinct from notes payable liabilities, which are debts created by formal legal instrument documents. An accounts payabl ...
tools can have separately acquired and separately
negotiated and separately
Traded License agreements.
Each can be individually turned off and, when necessary, replaced by a corresponding
cost free
The English language, English adjective ''free'' is commonly used in one of two meanings: "at no monetary cost" (''gratis'') and "with little or no restriction" (''libre''). This ambiguity of ''free'' can cause issues where the distinction i ...
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
Compatibility may refer to:
Computing
* Backward compatibility, in which newer devices can understand data generated by older devices
* Compatibility card, an expansion card for hardware emulation of another device
* Compatibility layer, compon ...
with already deployed decoders.
A proposal by
Samsung
The Samsung Group (or simply Samsung) ( ko, 삼성 ) is a South Korean multinational manufacturing conglomerate headquartered in Samsung Town, Seoul, South Korea. It comprises numerous affiliated businesses, most of them united under the ...
,
Huawei 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 and supports both the baseline and main profiles of EVC. Its license is a custom
3-clause BSD license.
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.
Since Base Profile is free of patents fees; therefore there should be no patent issues hindering development from legal side.
See also
*
MPEG-5 Part 2 / Low Complexity Enhancement Video Coding / LC EVC
*
H.266 / MPEG-I Part 3 / Versatile Video Coding / VVC
*
AV1
*
IP core - Semiconductor
intellectual property
Intellectual property (IP) is a category of property that includes intangible creations of the human intellect. There are many types of intellectual property, and some countries recognize more than others. The best-known types are patents, cop ...
core - Licensing scheme based on similar solutions as for MPEG-5 Part 1: EVC
References
External links
Text of the standard on the ISO website(feature freeze (''FDIS'' status) as of August 2020)
MPEG
Video compression
Video codecs
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