1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T H.265.2 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (10/2014) SERIES H: AUDIOVISUAL AND MULTIMEDIA SYSTEMS Infrastructure of audiovisual services Coding of moving video Reference software for ITU-T H.265 high efficiency
2、 video coding Recommendation ITU-T H.265.2 ITU-T H-SERIES RECOMMENDATIONS AUDIOVISUAL AND MULTIMEDIA SYSTEMS CHARACTERISTICS OF VISUAL TELEPHONE SYSTEMS H.100H.199 INFRASTRUCTURE OF AUDIOVISUAL SERVICES General H.200H.219 Transmission multiplexing and synchronization H.220H.229 Systems aspects H.230
3、H.239 Communication procedures H.240H.259 Coding of moving video H.260H.279 Related systems aspects H.280H.299 Systems and terminal equipment for audiovisual services H.300H.349 Directory services architecture for audiovisual and multimedia services H.350H.359 Quality of service architecture for aud
4、iovisual and multimedia services H.360H.369 Telepresence H.420H.429 Supplementary services for multimedia H.450H.499 MOBILITY AND COLLABORATION PROCEDURES Overview of Mobility and Collaboration, definitions, protocols and procedures H.500H.509 Mobility for H-Series multimedia systems and services H.
5、510H.519 Mobile multimedia collaboration applications and services H.520H.529 Security for mobile multimedia systems and services H.530H.539 Security for mobile multimedia collaboration applications and services H.540H.549 Mobility interworking procedures H.550H.559 Mobile multimedia collaboration i
6、nter-working procedures H.560H.569 BROADBAND, TRIPLE-PLAY AND ADVANCED MULTIMEDIA SERVICES Broadband multimedia services over VDSL H.610H.619 Advanced multimedia services and applications H.620H.629 Ubiquitous sensor network applications and Internet of Things H.640H.649 IPTV MULTIMEDIA SERVICES AND
7、 APPLICATIONS FOR IPTV General aspects H.700H.719 IPTV terminal devices H.720H.729 IPTV middleware H.730H.739 IPTV application event handling H.740H.749 IPTV metadata H.750H.759 IPTV multimedia application frameworks H.760H.769 IPTV service discovery up to consumption H.770H.779 Digital Signage H.78
8、0H.789 E-HEALTH MULTIMEDIA SERVICES AND APPLICATIONS Interoperability compliance testing of personal health systems (HRN, PAN, LAN and WAN) H.820H.859 Multimedia e-health data exchange services H.860H.869 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T H.265.2 (10/
9、2014) i Recommendation ITU-T H.265.2 Reference software for ITU-T H.265 high efficiency video coding Summary Recommendation ITU-T H.265.2 contains an accompanying reference software for Rec. ITU-T H.265 | ISO/IEC 23008-2 High efficiency video coding. The reference software includes both encoder and
10、decoder functionality. Reference software is useful in aiding users of a video coding standard to establish and test conformance and interoperability, and to educate users and demonstrate the capabilities of the standard. For these purposes, the accompanying software is provided as an aid for the st
11、udy and implementation of Rec. ITU-T H.265 | ISO/IEC 23008-2. The software has been jointly developed by the ITU-T Video Coding Experts Group (VCEG, Question 6 of ITU-T Study Group 16) and the ISO/IEC Moving Picture Experts Group (MPEG, Working Group 11 of Subcommittee 29 of ISO/IEC Joint Technical
12、Committee 1). It was developed jointly with MPEG and corresponds in a technically aligned manner to ISO/IEC 23008-5. The Reference source code for ITU-T H.265.2 is found in the electronic attachment to this Recommendation. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T H.26
13、5.2 2014-10-14 16 11.1002/1000/12298 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T H.265.2 (10/2014) FOREWORD The Interna
14、tional Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, oper
15、ating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, p
16、roduce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In
17、this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g.,
18、 interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not sugg
19、est that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evide
20、nce, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had received notice of intellectual property, protected by patents, which may be
21、 required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2015 All rights reserved. No part of this publication may be rep
22、roduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T H.265.2 (10/2014) iii CONTENTS Page 0.1 Purpose iv 0.2 Examples of use iv 0.3 Warranty disclaimer iv 1 Scope 1 2 References 1 2.1 Normative references 1 2.2 Additional references 1 3 Definitions 1 4 Abbreviatio
23、ns . 2 5 Conventions 2 6 Reference software for Rec. ITU-T H.265 | ISO/IEC 23008-2 2 Electronic attachment: Reference source code iv Rec. ITU-T H.265.2 (10/2014) Introduction 0.1 Purpose The purpose of this Recommendation | International Standard is to provide the following: Reference decoder softwa
24、re capable of decoding bitstreams that conform to Rec. ITU-T H.265 | ISO/IEC 23008-2 in a manner that conforms to the decoding process specified in Rec. ITU-T H.265 | ISO/IEC 23008-2. Reference encoder software capable of producing bitstreams that conform to Rec. ITU-T H.265 | ISO/IEC 23008-2. 0.2 E
25、xamples of use Some examples of use that may be appropriate for the reference decoder software are as follows: As an illustration of how to perform the decoding process 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. IT
26、U-T H.265 | ISO/IEC 23008-2. For testing the conformance of a decoder implementation with the decoding process specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 (as the values of the samples in all decoded pictures and the relative ordering of those pictures will be identical from all conforming decod
27、er implementations that support 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 bitstream to the constraints specified for bitstream conformance in Rec. ITU-T H.265 | ISO/IEC 23008-2, as the software can detect and repo
28、rt many bitstream conformance violations. NOTE 1 However, the lack of the detection of any conformance violation by the reference decoder software should not be considered as definitive proof that the bitstream conforms to all constraints specified for bitstream conformance in Rec. ITU-T H.265 | ISO
29、/IEC 23008-2. Some examples of use that may be appropriate for the reference encoder software are as follows: As an illustration of how to perform an encoding process that produces bitstreams that conform to the constraints specified for bitstream conformance in Rec. ITU-T H.265 | ISO/IEC 23008-2. A
30、s the starting basis for the implementation of an encoder that conforms to Rec. ITU-T H.265 | ISO/IEC 23008-2. As a means of generating bitstreams for testing the conformance of a decoder implementation with the decoding process specified in Rec. ITU-T H.265 | ISO/IEC 23008-2. As a means of evaluati
31、ng and demonstrating examples of the quality that can be achieved by an encoding process that conforms to Rec. ITU-T H.265 | ISO/IEC 23008-2. NOTE 2 However, no guarantee of the quality that will be achieved by an encoder is provided by its conformance to Rec. ITU-T H.265 | ISO/IEC 23008-2, as the c
32、onformance of an encoder to Rec. ITU-T H.265 | ISO/IEC 23008-2 is defined only in terms of format constraints imposed on the bitstream syntax. Thus, while the reference encoder software may suffice to provide some illustrative examples of what quality can be achieved in conformance to Rec. ITU-T H.2
33、65 | ISO/IEC 23008-2, it provides neither an assurance of minimum guaranteed video encoding quality nor maximum achievable video encoding quality. 0.3 Warranty disclaimer Regardless of any and all statements made herein or elsewhere regarding the possible uses of the reference software, the followin
34、g disclaimers of warranty apply to the provided reference software. ITU and ISO/IEC disclaim any and all warranties, whether express, implied, or statutory, including any implied warranties of merchantability or of fitness for a particular purpose. In no event shall the contributor(s), ISO/IEC or IT
35、U be liable for any incidental, punitive, or consequential 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 assignees. ITU does not represent or
36、 warrant that the programs furnished hereunder are free of infringement of any third-party patents. Rec. ITU-T H.265.2 (10/2014) v Commercial implementations of ISO/IEC International Standards | ITU-T Recommendations, including shareware, may be subject to royalty fees to patent holders. Information
37、 regarding the common patent policy for ITU-T/ITU-R/ISO/IEC is available from the ITU website at http:/itu.int/ITU-T/dbase/patent/patent-policy.html. Rec. ITU-T H.265.2 (10/2014) 1 Recommendation ITU-T H.265.2 Reference software for ITU-T H.265 high efficiency video coding 1 Scope This Recommendatio
38、n | 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 this Recommendation | International Standard. The use of this reference software is not required for making an implementation of
39、 an encoder or decoder in conformance 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 References 2.1 Normative references The following Recommendations and International Standards co
40、ntain provisions which, through reference in this text, constitute provisions of this Recommendation | International Standard. At the time of publication, the editions indicated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendat
41、ion | International Standard are encouraged to investigate the possibility of applying the most recent edition of the Recommendations and Standards listed below. Members of IEC and ISO maintain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the
42、ITU maintains a list of currently valid ITU-T Recommendations. 2.1.1 ITU-T Recommendations None. 2.1.2 Identical Recommendations | International Standards None. 2.1.3 Paired Recommendations | International Standards equivalent in technical content Recommendation ITU-T H.265 (2014), High efficiency v
43、ideo coding. ISO/IEC 23008-2:2013, Information technology High efficiency coding and media delivery in heterogeneous environments Part 2: High efficiency video coding. 2.2 Additional references None. 3 Definitions For the purposes of this Recommendation, the terms, definitions, abbreviations and sym
44、bols specified in Rec. ITU-T H.265 | ISO/IEC 23008-2 (particularly in clause 3) apply. Definitions 3.1, 3.2, and 3.3 below replace the corresponding definitions in Rec. ITU-T H.265 | ISO/IEC 23008-2. Definitions 3.4 and 3.5 are additional definitions. 3.1 bitstream: A sequence of bits that may confo
45、rm to Rec. ITU-T H.265 | ISO/IEC 23008-2. A bitstream that conforms to Rec. ITU-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 decoding process requirements specified for conformance to Rec. ITU-T
46、 H.265 | ISO/IEC 23008-2. The scope of decoder, as considered herein, does not include a display process, which is outside the scope of this Recommendation | International Standard. 3.3 encoder: An embodiment of a process, not specified in this Recommendation | International Standard, that produces
47、a bitstream. 3.4 reference software decoder: The decoding software accompanying this Recommendation | International Standard. 2 Rec. ITU-T H.265.2 (10/2014) 3.5 reference software encoder: The encoding software accompanying this Recommendation | International Standard. 4 Abbreviations For the purpos
48、es of this Recommendation | International Standard, relevant abbreviations are specified in clause 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 in clause 5 of Rec. ITU-T H.265 | ISO/IEC 230
49、08-2. 6 Reference software for Rec. ITU-T H.265 | ISO/IEC 23008-2 The reference software for Rec. ITU-T H.265 | ISO/IEC 23008-2 is found in the electronic attachment to this Recommendation | International Standard. The attached software package contains one part: HM software: Support for the Main, Main 10, and Main Still Picture profiles. Printed in Switzerland Geneva, 2015 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff princi
