INTERNATIONAL ISO/IEC STANDARD 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 I'information- Codage des objets audiovisuels Partie 20: Représentation de scene d'application allegee (LASeR) et format d'agregation simple (SAF) Reference number ISO/IEC 14496-20:2008(E) IEC ISO @ISO/IEC 2008 Copyright Intern tional Organization for Standardization ISO/IEC 14496-20:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO/IEC2008 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 photocopying and microfilm, without permission in writing from either isO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO/IEC 2008 - All rights reserved I without license from IHS Not for Resale ISO/IEC 14496-20:2008(E) Contents Page Foreword Introduction .vii 1 Scope, 2 Normative references. 3 Terms, definitions and abbreviations.. 3.1 Terms and definitions . 3.2 4 Document conventions. 5 Architecture 5.1 Overview..... 5.2 LASeR systems decoder model. 6 Scene representation.. 6.1 Overview.... 6.2 Relationship with SVG .8 6.3 Timing model.... 6.4 Execution model. 12 6.5 Events... 12 6.6 16 6.7 LASeR Scene Commands.. 18 6.8 Scene description elements. 6.9 Summary of possible attributes per element 47 6.10 7 Simple Aggregation Format (SAF) 54 7.1 Overview.... 54 7.2 Time and terminal model specification .. 54 7.3 54 7.4 SAF Packet Header.. .57 7.5 SAF Access Unit.. 57 7.6 SimpleDecoderConfigDescriptor... 59 7.7 SimpleDecoderSpecificlnfo. 7.8 RemoteStreamHeader.. .60 7.9 Cache unit 60 7.10 EndOfStream 61 7.11 EndOfSAFSession.... 7.12 GroupingDescriptor .62 7.13 SAF configuration. 62 7.14 7.15 SAF Extended Access Unit. ..64 7.16 SAF first fragment unit. .64 7.17 SAF fragment unit 65 8 Profiles 65 8.1 Overview.... 8.2 LASeR mini .65 8.3 LASeR full. .68 8.4 LASeRCore .73 9 Compatibility of SAF Packet.. 76 10 Carriage of LASeR and SAF 77 CopyrghtIntemationalOganizatrsanardization Allrightsreseved ili nse from IHS Not for Resale