ISO IEC 23009-2-2014 Information technology - Dynamic adaptive streaming over HTTP (DASH) - Part 2 Conformance and reference software《信息技术 通过HTTP (DASH) 动态自适应流媒.pdf
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1、 Reference numberISO/IEC 23009-2:2014(E)ISO/IEC 2014INTERNATIONAL STANDARD ISO/IEC23009-2First edition2014-05-15Information technology Dynamic adaptive streaming over HTTP (DASH) Part 2: Conformance and reference software Technologies de linformation Diffusion en flux adaptatif dynamique sur HTTP (D
2、ASH) Partie 2: Conformit et logiciel de rfrence ISO/IEC 23009-2:2014(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2014 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, including phot
3、ocopying, 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 + 41 22 749 0
4、9 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2014 All rights reservedISO/IEC 23009-2:2014(E) ISO/IEC 2014 All rights reserved iiiContents Foreword . iv Introduction . v 1 Scope 1 2 Normative references 1 3 Terms, definitions, symbols and abbreviated terms . 1 3.1
5、Terms and definitions . 1 3.2 Symbols and abbreviated terms 1 4 Media presentation conformance 1 4.1 Overview . 1 4.2 Software Tools . 2 5 MPD conformance . 2 5.1 General 2 5.2 Static MPD conformance 3 6 Segment conformance 4 6.1 Overview . 4 6.2 Representation conformance . 4 6.2.1 ISO base media f
6、ile format 4 6.2.2 MPEG-2 transport stream . 7 6.3 Adaptation set conformance 11 6.3.1 ISO base media file format 11 6.3.2 MPEG-2 Transport Stream 12 6.4 Dynamic media presentation conformance 13 7 Profile specific conformance 13 7.1 ISO base media file format on demand profile . 13 7.2 ISO base med
7、ia file format live profile 14 7.3 ISO base media file format main profile 14 7.4 MPEG-2 transport stream simple profile . 14 8 Conforming test vectors . 15 Annex A (normative) MPD conformance checking 16 A.1 Introduction 16 A.2 Step 1: XLink Resolver 16 A.3 Step 2: XML Validator 17 A.4 Step 3: Sche
8、matron Validator . 18 Annex B (normative) Test Vectors . 51 Annex C (normative) DASH access engine reference software . 53 C.1 Introduction 53 C.2 libdash overview 53 C.3 libdash-enabled example system (informative) 53 C.4 libdash availability . 54 Annex D (informative) Sample Software . 55 D.1 Intr
9、oduction 55 D.2 Sample Clients . 55 D.3 Sample Segmenter 56 Annex E (informative) Dynamic Media Presentation Emulator . 58 E.1 Introduction 58 E.2 Usage 58 E.3 Availability 58 ISO/IEC 23009-2:2014(E) iv ISO/IEC 2014 All rights reservedForeword ISO (the International Organization for Standardization)
10、 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
11、 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. In the field of information technology, ISO and IEC
12、 have established a joint technical 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 j
13、oint technical committee are circulated 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 righ
14、ts. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 23009-2 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 23009 consists of
15、 the following parts, under the general title Information technology Dynamic adaptive streaming over HTTP (DASH): Part 1: Media presentation description and segment formats Part 2: Conformance and reference software Part 3: Implementation guidelines Technical Report Part 4: Segment encryption and au
16、thentication ISO/IEC 23009-2:2014(E) ISO/IEC 2014 All rights reserved vIntroduction This part of ISO/IEC 23009 specifies the conformance and reference software. The conformance and reference software of ISO/IEC 23009 serves three main purposes: validation of the written specification of the several
17、parts of ISO/IEC 23009; clarification of the written specification of the several parts of ISO/IEC 23009; and conformance testing for checking interoperability for the various applications against the reference software which aims to be compliant with ISO/IEC 23009. INTERNATIONAL STANDARD ISO/IEC 23
18、009-2:2014(E) ISO/IEC 2014 All rights reserved 1Information technology Dynamic adaptive streaming over HTTP (DASH) Part 2: Conformance and reference software 1 Scope This part of ISO/IEC 23009 specifies the conformance and reference software implementing the normative clauses of all parts of ISO/IEC
19、 23009. That is, test vectors comprising Media Presentation Descriptions, Segments, and combinations thereof that conform or do not conform to the normative clauses of the other parts of ISO/IEC 23009 and corresponding software modules. 2 Normative references The following documents, in whole or in
20、part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) shall apply. ISO/IEC 19757-3, Information technology Doc
21、ument Schema Definition Languages (DSDL) Part 3: Rule-based validation Schematron ISO/IEC 23009-1, Information technology Dynamic adaptive streaming over HTTP (DASH) Part 1: Media presentation description and segment formats W3C XLINK, XML Linking Language (XLink) Version 1.1, W3C Recommendation 06,
22、 May 2010 W3C XML, Extensible Markup Language (XML) 1.1 (Second Edition), W3C Recommendation 16, August 2006, edited in place 29 September 2006 W3C XML SCHEMA, XML Schema Definition Language (XSD) 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions For the purpose of this d
23、ocument, the terms and definitions given in ISO/IEC 23009-1 apply. 3.2 Symbols and abbreviated terms For the purposes of this document, the symbols and abbreviated terms given in ISO/IEC 23009-1 apply. 4 Media presentation conformance 4.1 Overview A Media Presentation conforming to ISO/IEC 23009-1 o
24、beys the rules for the Media Presentation Description (MPD), and the Segments referenced within the MPD. To verify the conformance of a Media Presentation, the following steps need to be completed: ISO/IEC 23009-2:2014(E) 2 ISO/IEC 2014 All rights reserved The conformance of the MPD as according to
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