1、BSI Standards PublicationBS ISO/IEC 23008-5:2015Information technology High efficiency codingand media delivery inheterogeneous environmentsPart 5: Reference software for highefficiency video codingBS ISO/IEC 23008-5:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementatio
2、n of ISO/IEC23008-5:2015.The UK participation in its preparation was entrusted to TechnicalCommittee IST/37, Coding of picture, audio, multimedia andhypermedia information.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purpo
3、rt to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 83031 0ICS 35.040Compliance with a British Standard cannot confer immunity fromlegal obligations.Th
4、is British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2015.Amendments/corrigenda issued since publicationDate Text affectedBS ISO/IEC 23008-5:2015Reference numberISO/IEC 23008-5:2015(E)ISO/IEC 2015INTERNATIONAL STANDARD ISO/IEC23008-5First ed
5、ition2015-04-15Information technology High efficiency coding and media delivery in heterogeneous environments Part 5: Reference software for high efficiency video coding Technologies de linformation Codage haute efficacit et livraison des mdias dans des environnements htrognes Partie 5: Logicielderf
6、rencepourlecodagevidohauteefficacit BS ISO/IEC 23008-5:2015ISO/IEC 23008-5:2015(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, inc
7、luding 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 office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax +
8、41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2015 All rights reservedBS ISO/IEC 23008-5:2015ISO/IEC 23008-5:2015(E) ISO/IEC 2015 All rights reserved iiiForeword ISO (the International Organization for Standardization) and IEC (the International Electrot
9、echnical 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
10、 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. In the field of information technology, ISO and IEC have established a joint technical
11、committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circula
12、ted to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. 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 re
13、sponsible for identifying any or all such patent rights. ISO/IEC 23008-5 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information, in collaboration with ITU-T. The identical text is published
14、as ITU-T H.265 (08/2014). BS ISO/IEC 23008-5:2015ISO/IEC 23008-5:2015(E)Introduction*This Recommendation | International Standard accompanies reference software for Rec. ITU-T H.265 |ISO/IEC 23008-2 High efficiency video coding. The reference software includes both encoder and decoderfunctionality.
15、Reference software is useful in aiding users of a video coding standard to establish and test conformance andinteroperability, and to educate users and demonstrate the capabilities of the standard. For these purposes, theaccompanying software is provided as an aid for the study and implementation of
16、 Rec. ITU-T H.265 |ISO/IEC 23008-2 High efficiency video coding. The software has been jointly developed by the ITU-T Video Coding Experts Group (VCEG, Question 6 ofITU-T Study Group 16) and the ISO/IEC Moving Picture Experts Group (MPEG, Working Group 11 ofSubcommittee 29 of ISO/IEC Joint Technical
17、 Committee 1). 0.1 Purpose The purpose of this Recommendation | International Standard is to provide the following: Reference decoder software capable of decoding bitstreams that conform to Rec. ITU-T H.265 | ISO/IEC23008-2 in a manner that conforms to the decoding process specified in Rec. ITU-T H.
18、265 | ISO/IEC23008-2. Reference encoder software capable of producing bitstreams that conform toRec. ITU-T H.265 | ISO/IEC 23008-2. 0.2 Examples of use Some examples of uses that may be appropriate for the reference decoder software are as follows: As an illustration of how to perform the decoding p
19、rocess specified in Rec. ITU-T H.265 |ISO/IEC 23008-2. As the starting basis for the implementation of a decoder that conforms to Rec. ITU-T H.265 |ISO/IEC 23008-2. For testing the conformance of a decoder implementation with the decoding process specified inRec. ITU-T H.265 | ISO/IEC 23008-2 (as th
20、e values of the samples in all decoded pictures and therelative ordering of those pictures will be identical from all conforming decoder implementations thatsupport the profile and level used in a bitstream that conforms to Rec. ITU-T H.265 | ISO/IEC 23008-2). For testing the conformance of a bitstr
21、eam to the constraints specified for bitstream conformance in Rec.ITU-T H.265 | ISO/IEC 23008-2, as the software can detect and report many bitstream conformanceviolations. NOTE 1 However, the lack of the detection of any conformance violation by the reference decoder softwareshould not be considere
22、d as definitive proof that the bitstream conforms to all constraints specified for bitstreamconformance in Rec. ITU-T H.265 | ISO/IEC 23008-2. Some examples of uses that may be appropriate for the reference encoder software are as follows: As an illustration of how to perform an encoding process tha
23、t produces bitstreams that conform to theconstraints specified for bitstream conformance in Rec. ITU-T H.265 | ISO/IEC 23008-2. As the starting basis for the implementation of an encoder that conforms toRec. ITU-T H.265 | ISO/IEC 23008-2. As a means of generating bitstreams for testing the conforman
24、ce of a decoder implementation with thedecoding process specified in Rec. ITU-T H.265 | ISO/IEC 23008-2. As a means of evaluating and demonstrating examples of the quality that can be achieved by an encodingprocess that conforms to Rec. ITU-T H.265 | ISO/IEC 23008-2. NOTE 2 However, no guarantee of
25、the quality that will be achieved by an encoder is provided by its conformanceto Rec. ITU-T H.265 | ISO/IEC 23008-2, as the conformance of an encoder to Rec. ITU-T H.265 | ISO/IEC 23008-2is defined only in terms of format constraints imposed on the bitstream syntax. Thus, while the reference encoder
26、software may suffice to provide some illustrative examples of what quality can be achieved in conformance to Rec.ITU-T H.265 | ISO/IEC 23008-2, it provides neither an assurance of minimum guaranteed video encoding qualitynor maximum achievable video encoding quality. *This introduction does not form
27、 an integral part of this Recommendation | International Standard. ISO/IEC 2015 All rights reservedivBS ISO/IEC 23008-5:2015ISO/IEC 23008-5:2015(E) ISO/IEC 2015 All rights reserved0.3 Warranty disclaimer Regardless of any and all statements made herein or elsewhere regarding the possible uses of the
28、 referencesoftware, the following disclaimers of warranty apply to the provided reference software. ITU and ISO/IEC disclaim any and all warranties, whether express, implied, or statutory, including anyimplied warranties of merchantability or of fitness for a particular purpose. In no event shall th
29、e contributor(s), ISO/IEC or ITU be liable for any incidental, punitive, orconsequential damages of any kind whatsoever arising from the use of these programs. This disclaimer of warranty extends to the user of these programs and users customers, employees,agents, transferees, successors, and assign
30、ees. ITU does not represent or warrant that the programs furnished hereunder are free of infringement of anythird-party patents. Commercial implementations of ISO/IEC International Standards | ITU-T Recommendations, includingshareware, may be subject to royalty fees to patent holders. Information re
31、garding the common patent policy for ITU-T/ITU-R/ISO/IEC is available from the ITUwebsite at http:/itu.int/ITU-T/dbase/patent/patent-policy.html. vBS ISO/IEC 23008-5:2015BS ISO/IEC 23008-5:2015ISO/IEC 23008-5:2015(E)Recommendation ITU-T H.265.2 | International Standard ISO/IEC 23008-5 Reference soft
32、ware for ITU-T H.265 | ISO/IEC 23008-2 High efficiency video coding 1 Scope This Recommendation | International Standard provides accompanying reference software for Rec. ITU-T H.265 | ISO/IEC 23008-2 as an electronic attachment. The software is an integral part of thisRecommendation | International
33、 Standard. The use of this reference software is not required for making an implementation of an encoder or decoder inconformance to Rec. ITU-T H.265 | ISO/IEC 23008-2. Requirements established in Rec. ITU-T H.265 |ISO/IEC 23008-2 take precedence over the behaviour of the reference software. 2 Refer
34、ences 2.1 Normative references The following Recommendations and International Standards contain provisions which, through reference inthis text, constitute provisions of this Recommendation | International Standard. At the time of publication,the editions indicated were valid. All Recommendations a
35、nd Standards are subject to revision, and parties toagreements based on this Recommendation | International Standard are encouraged to investigate thepossibility of applying the most recent edition of the Recommendations and Standards listed below.Members of IEC and ISO maintain registers of current
36、ly valid International Standards. TheTelecommunication Standardization Bureau of the ITU maintains a list of currently valid ITU-TRecommendations. 2.1.1 ITU-T Recommendations | International Standards Recommendation ITU-T H.265 (2013), High efficiency video coding for generic audiovisual services. I
37、SO/IEC 23008-2:2013, Information technology High efficiency coding and media delivery inheterogeneous environments Part 2: High efficiency video coding. 2.1.2 Identical Recommendations | International Standards None.2.1.3 Paired Recommendations | International Standards equivalent in technicalconten
38、t Recommendation ITU-T H.265.2, Reference software for ITU-T H.265 high efficiency video coding2.2 Additional references None.3 Definitions For the purposes of this Recommendation, the terms, definitions, abbreviations and symbols specified inRec. ITU-T H.265 | ISO/IEC 23008-2 (particularly in claus
39、e 3) apply. Definitions 3.1, 3.2, and 3.3 belowreplace the corresponding definitions in Rec. ITU-T H.265 | ISO/IEC 23008-2. Definitions 3.4 and 3.5 areadditional definitions. 3.1 bitstream: A sequence of bits that may conform to Rec. ITU-T H.265 | ISO/IEC 23008-2. A bitstreamthat conforms to Rec. IT
40、U-T H.265 | ISO/IEC 23008-2 will contain one or more slices. 3.2 decoder: An embodiment of a process that operates on a bitstream and may conform to the decodingprocess requirements specified for conformance to Rec. ITU-T H.265 | ISO/IEC 23008-2. The scope of ISO/IEC 2015 All rights reserved1 ISO/IE
41、C 2015 All rights reserveddecoder, as considered herein, does not include a display process, which is outside the scope of thisRecommendation | International Standard. 3.3 encoder: An embodiment of a process, not specified in this Recommendation | International Standard,that produces a bitstream. 3.
42、4 reference software decoder: The decoding software accompanying this Recommendation | InternationalStandard. 3.5 reference software encoder: The encoding software accompanying this Recommendation | InternationalStandard. 4 Abbreviations For the purposes of this Recommendation | International Standa
43、rd, relevant abbreviations are specified inclause 4 of Rec. ITU-T H.265 | ISO/IEC 23008-2. 5 Conventions For the purposes of this Recommendation | International Standard, relevant conventions are specified inclause 5 of Rec. ITU-T H.265 | ISO/IEC 23008-2. 6 Reference software for Rec. ITU-T H.265 |
44、ISO/IEC 23008-2 The reference software for Rec. ITU-T H.265 | ISO/IEC 23008-2 is found in the electronic attachment to thisRecommendation | International Standard. The attached software package contains one part: HM software: Support for the Main, Main 10, and Main Still Picture profiles.2BS ISO/IEC
45、 23008-5:2015ISO/IEC 23008-5:2015(E) BS ISO/IEC 23008-5:2015BS ISO/IEC 23008-5:2015ISO/IEC 23008-5:2015(E) ICS 35.040 Price based on 2 pages ISO/IEC 2015 All rights reserved This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-rela
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