INTERNATIONAL ISO/IEC STANDARD 23001-11 Third edition 2023-02 Information technology - MPEG systems technologies Part 11: Energy-efficient media consumption (green metadata) Technologies de I'information - Technologies des systemes MPEG - Partie 11: Consommation des supports éconergétiques (métadonnées vertes) Reference number IEC IS0/IEC 23001-11:2023(E) OSI @ IS0/IEC 2023 IS0/IEC 23001-11:2023(E) COPYRIGHT PROTECTED DOCUMENT @IS0/IEC2023 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on or ISo's member body in the country of the requester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0/IEC 2023 - All rights reserved IS0/IEC 23001-11:2023(E) Contents Page Foreword ..V Introduction. .vi 1 Scope. ..1 2 Normative references 3 Terms, definitions, symbols, abbreviated terms ..1 3.1 Terms and definitions. .1 3.2 Symbols and abbreviated terms 3.2.1 Symbols. .2 3.2.2 Abbreviations .3 4 Conventions ..4 4.1 Arithmetic operators 4 4.2 Relational operators ..4 4.3 Bit-wise operators. .4 4.4 Assignment operators. ..5 4.5 Range notation .5 4.6 Mathematical functions. .5 4.7 Specification of syntax functions and descriptors .6 5 Functional architecture. .6 5.1 Description of the functional architecture .6 5.2 Definition of components in the functional architecture. 6 Decoder power reduction. .8 6.1 General. ..8 6.2 Complexity metrics for decoder-power reduction 6.2.1 General .8 6.2.2 Syntax.. 6.2.3 Signalling. .12 6.2.4 Semantics .12 6.3 Interactive signalling for remote decoder-power reduction .35 6.3.1 General .35 6.3.2 Syntax. .35 6.3.3 Signalling. 36 6.3.4 Semantics .36 7 Display power reduction using display adaptation .37 7.1 General 37 7.2 Syntax. ..37 7.2.1 Systems without a signalling mechanism from the receiver to the transmitter.. 37 7.2.2 Systems with a signalling mechanism from the receiver to the transmitter .38 7.3 Signalling. 38 7.3.1 Systems without a signalling mechanism from the receiver to the transmitter .38 7.3.2 Systems with a signalling mechanism from the receiver to the transmitter 38 7.4 Semantics 38 8 Energy-efficient media selection .40 8.1 General 40 8.2 Syntax. ..40 8.3 Signalling ..40 8.4 Semantics 41 8.4.1 Decoder-power indication metadata semantics. 41 8.4.2 Display-power indication metadata semantics. 41 9 Metrics for quality recovery after low-power encoding. ..42 IS0/IEC 2023 - All rights reserved iii IS0/IEC 23001-11:2023(E) 9.1 General. 42 9.2 Syntax. 42 9.2.1 AVC and HEVC syntax. 42 9.2.2 VvC syntax 42 9.3 Signalling. 42 9.4 Semantics 43 9.4.1 AVC and HEVC Semantics. 43 9.4.2 VVC Semantics 43 10 Conformance and reference software 44 Annex A (normative) Supplemental Enhancement Information (SEl) syntax .45 Annex B (informative) Implementation guidelines for the usage of green metadata .51 Annex C (normative) Conformance and reference software .73 AnnexD(informative)Objectivedistortionmetrics .78 Bibliography 83 iv @ IS0/IEC 2023 - All rights reserved IS0/IEC 23001-11:2023(E) Foreword @ IsO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technica committees established by the respective organization to deal with particular fields of technical activity.IsOandIECtechnicalcommitteescollaborateinfieldsofmutualinterest.Otherinternational organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. The procedures used to develop this document and those intended for its further maintenance are describ