ISO_IEC_23094-4_2022-Character_PDF_documenten.pdf

Information technology General video coding Part 4:Conformance and reference software for essential video codingTechnologies de linformation Codage vido gnral Partie 4:Conformit et logiciel de rfrence pour le codage vido essentielINTERNATIONAL STANDARDISO/IEC 23094-4First edition 2022-01Reference number ISO/IEC 23094-4:2022(E)ISO/IEC 2022iiISO/IEC 23094-4:2022(E)COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2022All 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 the internet or an intranet,without prior written permission.Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCP 401 Ch.de Blandonnet 8CH-1214 Vernier,GenevaPhone:+41 22 749 01 11Email:copyrightiso.orgWebsite:www.iso.orgPublished in Switzerland ISO/IEC 2022 All rights reserved Foreword.iv1 Scope.12 Normative references.13Termsanddefinitions.14 Abbreviated terms.25 Conventions.26 Conformance testing for ISO/IEC 23094-1.26.1 Introduction.26.2 Bitstream conformance.26.3 Decoder conformance.26.4 Procedure to test bitstreams.26.5 Procedure to test decoder conformance.36.5.1 Conformance bitstreams.36.5.2 Contents of the bitstream file.36.5.3 Requirements on output of the decoding process and timing.36.5.4 Recommendations.46.5.5 Static tests for output order conformance.46.5.6 Dynamic tests for output timing conformance.46.5.7 Decoder conformance test of a particular profile and level.56.6 Specification of the test bitstreams.56.6.1 General.56.6.2 Test bitstreams.66.7 Test suites for ISO/IEC 23094-1.257 Reference software description.307.1 General.307.2 ETM repository.317.3 Encoder and decoder usage.31ISO/IEC 23094-4:2022(E)iii ISO/IEC 2022 All rights reserved Contents PageForewordISO(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 technical committees established by the respective organization to deal with particular fields of technical activity.ISO and IEC technical committees collaborate in fields of mutual interest.Other international 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 described in the ISO/IEC Directives,Part 1.In particular,the different approval criteria needed for the different types of document should be noted.This document was drafted in accordance with the editorial rules of the ISO/IEC Directives,Part 2(see www.iso.org/directives or www.iec.ch/members_experts/refdocs).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.ISO and IEC shall not be held responsible for identifying any or all such patent rights.Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received(see www.iso.org/patents)or the IEC list of patent declarations received(see https:/patents.iec.ch).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation of the voluntary nature of standards,the meaning of ISO specific terms and expressions related to conformity assessment,as well as information about ISOs adherence to the World Trade Organization(WTO)principles in the Technical Barriers to Trade(TBT)see www.iso.org/iso/foreword.html.In the IEC,see www.iec.ch/understanding-standards.This document was prepared by Joint Technical Committee ISO/IEC JTC 1,Information technology,Subcommittee SC 29,Coding of audio,picture,multimedia and hypermedia information.A list of all parts in the ISO/IEC 23094 series can be found on the ISO website and IEC websites.Any feedback or questions on this document should be directed to the users national standards body.A complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-committees.ISO/IEC 23094-4:2022(E)ISO/IEC 2022 All rights reserved ivInformation technology General video coding Part 4:Conformance and reference software for essential video coding1 ScopeThis document specifies a set of tests and procedures designed to indicate whether encoders or decoders essential video coding(EVC),which contains tests and a reference software designed to verify whether bitstreams and decoders meet normative requirements specified in ISO/IEC 23094-1.An encoder can claim conformance to ISO/IEC 23094-1 if the bitstreams that it generates are conforming bitstreams.Characteristics of coded bitstreams and decoders are d