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Compatibility with older hardware accelerators for older standards such as AVC/HEVC |
spelling, decoders Comparison to AV1 and MPEGi part3 - H.266/VVC |
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Each of the 21 [[payable]] tools can have separately acquired and separately [[negotiation|negotiated]] and separately [[Trade|Traded]] [[License agreement]]s.<ref name="Licenses4_21Tools"/> 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, [[License agreement|licensing]] complications occur around a specific tool, without breaking [[Computer compatibility#Software|compatibility]] with already deployed decoders.<ref name="Licenses4_21Tools"/>
This video codec is compatible with hardware accelerators - decoders originally developed for older standards such as [[H.264|AVC]]/[[HEVC]] at least in the '''Baseline profile'''.<ref>{{cite web |last1=McCann |first1=Ken |author1=Chairman of MPEG Ad hoc Group on EVC, MPEG‑5 Essential Video Coding |title=MPEG-5 Essential Video Coding (EVC) |url=https://www.itu.int/en/ITU-T/Workshops-and-Seminars/20191008/Documents/Ken_McCann_Presentation.pdf?trk=public_post_comment-text |website=itu.int/en/ITU-T/Workshops-and-Seminars/20191008/Documents |language=English |quote=EVC uses a novel profile structure. The Baseline profile includes only technologies that are more than 20 years old or that were submitted with a royalty‑free declaration. In contrast, the Main profile adds a small number of additional tools that can be switched off independently—allowing decoders (including hardware accelerators originally developed for older standards such as AVC/HEVC) to continue operating on the Baseline profile.}}</ref> This is significant difference to [[AV1]] or [[H.266]] that do not have this functionality and are designed to achieve higher compression gains even in higher cost of [[processing power|processing]]/[[computational power]].▼
▲<ref>{{cite web |last1=McCann |first1=Ken |author1=Chairman of MPEG Ad hoc Group on EVC, MPEG‑5 Essential Video Coding |title=MPEG-5 Essential Video Coding (EVC) |url=https://www.itu.int/en/ITU-T/Workshops-and-Seminars/20191008/Documents/Ken_McCann_Presentation.pdf?trk=public_post_comment-text |website=itu.int/en/ITU-T/Workshops-and-Seminars/20191008/Documents |language=English |quote=EVC uses a novel profile structure. The Baseline profile includes only technologies that are more than 20 years old or that were submitted with a royalty‑free declaration. In contrast, the Main profile adds a small number of additional tools that can be switched off independently—allowing decoders (including hardware accelerators originally developed for older standards such as AVC/HEVC) to continue operating on the Baseline profile.}}</ref>
A proposal by [[Samsung]], [[Huawei]] and [[Qualcomm]] forms the basis of EVC.<ref name="3codecs" />
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