ISO-14496-20-2008.pdf
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1、 Reference number ISO/IEC 14496-20:2008(E) ISO/IEC 2008 INTERNATIONAL STANDARD ISO/IEC 14496-20 Second edition 2008-12-01 Information technology Coding of audio-visual objects Part 20: Lightweight Application Scene Representation (LASeR) and Simple Aggregation Format (SAF) Technologies de linformati
2、on Codage des objets audiovisuels Partie 20: Reprsentation de scne dapplication allge (LASeR) et format dagrgation simple (SAF) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 00:28:30 MSTNo repr
3、oduction or networking permitted without license from IHS -,-,- ISO/IEC 14496-20:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are lic
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6、 to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including pho
7、tocopying and microfilm, without permission in writing 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 09 47 E-mail copyrightiso.org Web www.iso.org Published in Sw
8、itzerland ii ISO/IEC 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 00:28:30 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 14496-20:2
9、008(E) ISO/IEC 2008 All rights reserved iii Contents Page Foreword .v Introduction.vii 1 Scope1 2 Normative references2 3 Terms, definitions and abbreviations3 3.1 Terms and definitions.3 3.2 Abbreviations.4 4 Document conventions.4 5 Architecture .4 5.1 Overview.4 5.2 LASeR systems decoder model.5
10、6 Scene representation8 6.1 Overview.8 6.2 Relationship with SVG8 6.3 Timing model .10 6.4 Execution model12 6.5 Events.12 6.6 Encoder configuration16 6.7 LASeR Scene Commands.18 6.8 Scene description elements.31 6.9 Summary of possible attributes per element .47 6.10 Additions to the uDOM API.52 7
11、Simple Aggregation Format (SAF).54 7.1 Overview.54 7.2 Time and terminal model specification.54 7.3 SAF Packet.54 7.4 SAF Packet Header57 7.5 SAF Access Unit57 7.6 SimpleDecoderConfigDescriptor.59 7.7 SimpleDecoderSpecificInfo59 7.8 RemoteStreamHeader.60 7.9 Cache unit 60 7.10 EndOfStream61 7.11 End
12、OfSAFSession.61 7.12 GroupingDescriptor 62 7.13 SAF configuration .62 7.14 Stop cache .63 7.15 SAF Extended Access Unit.64 7.16 SAF first fragment unit64 7.17 SAF fragment unit .65 8 Profiles65 8.1 Overview.65 8.2 LASeR mini 65 8.3 LASeR full.68 8.4 LASeR Core73 9 Compatibility of SAF Packet.76 10 C
13、arriage of LASeR and SAF.77 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 00:28:30 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 14496-20:2008(E) iv ISO/IEC
14、2008 All rights reserved 10.1 Storage of LASeR in MP4 files .77 10.2 Carriage of SAF Streams over HTTP .80 10.3 Carriage of SAF Streams over RTP80 10.4 Carriage of SAF Streams over MPEG-2 Systems.80 11 Electronic attachments .80 12 Binary syntax for the LASeR encoding.81 12.1 Decoding process81 12.2
15、 Binary syntax .86 13 Usage of ISO/IEC 23001-1 .150 13.1 Introduction150 13.2 Electronic attachments .151 13.3 Type codecs.151 13.4 Type codecs for use with ISO/IEC 23001-1 decoders152 13.5 DecoderInit.155 13.6 Decoding process156 Annex A (informative) Patent statements.160 Annex B (normative) Media
16、 Type Registrations 161 Bibliography167 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 01/31/2009 00:28:30 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 14496-20:2008(E)
17、 ISO/IEC 2008 All rights reserved v 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 In
18、ternational 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 liai
19、son with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC 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 tech
20、nical committee is to prepare International Standards. Draft International Standards adopted by the joint 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. ISO/IEC 14496
21、-20 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. This second edition cancels and replaces the first edition (ISO/IEC 14496-20:2006) which has been technically revised. It also inc
22、orporates the Amendment ISO/IEC 14496-20:2006/Amd.1:2008 and the Technical Corrigenda ISO/IEC 14496-20:2006/Cor.1:2007 and ISO/IEC 14496-20:2006/Cor.2:2008. ISO/IEC 14496 consists of the following parts, under the general title Information technology Coding of audio-visual objects: Part 1: Systems P
23、art 2: Visual Part 3: Audio Part 4: Conformance testing Part 5: Reference software Part 6: Delivery Multimedia Integration Framework (DMIF) Part 7: Optimized reference software for coding of audio-visual objects Technical Report Part 8: Carriage of ISO/IEC 14496 contents over IP networks Part 9: Ref
24、erence hardware description Technical Report Part 10: Advanced Video Coding Part 11: Scene description and application engine Part 12: ISO base media file format Part 13: Intellectual Property Management and Protection (IPMP) extensions Part 14: MP4 file format Part 15: Advanced Video Coding (AVC) f
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