INTERNATIONAL ISO/IEC STANDARD 21000-17 First edition 2006-09-15 Information technology Multimedia framework (MPEG-21)- Part 17: Fragment Identification of MPEG Resources TechnologiesdeI'information—Cadremultimedia(MPEG-21) Partie17:IdentificationdefragmentsderessourcesMPEG Reference number ISO/IEC 21000-17:2006(E) E( @ISO/IEC2006 ISO/IEC21000-17:2006(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 downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat 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 @ISO/IEC2006 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 Casepostale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ISO/IEC21000-17:2006(E) Contents Page Foreword Introductior 1 Scope. 1.1 General.. 1.2 Organizationof this document 1.3 Relationship with the MPEG-21 Framework 2 Normative references 3 Terms,definitions andabbreviatedterms 3.1 Definitions ..... 3.2 Abbreviations 3.3 Namespaces 4 MPEGURIFragmentIdentifierFramework 4.1 Introduction. 4.2 W3CXPointerFramework 4.3 Useofnamespacesandofthexmlns()pointerscheme. 4.4 Hierarchical combination of pointer parts 4.5 Syntax.......... 4.6 Character escaping... 4.7 Processing... 5 Pointerschemes 5.1 Introduction... 5.2 Theffp()pointerscheme. 10 5.3 Theoffset()pointerscheme.. 5.4 The mp()pointer scheme.. 12 5.5 The mask() pointer scheme.. 25 6 Logical Model representation.. 26 6.1 Introduction... 26 6.2 26 Schemafor Logical Modelrepresentation 6.3 Semantics..... 27 6.4 Schemaforschemas 6.5 Logical Model for MPEG-4 files 28 AnnexA(informative)Examples ofspatiotemporalfragments.... AnnexB(informative)Logicalmodel ofa resource-examples.. 34 Annex C (informative)Time scheme syntaxes..... ISO/IEC21000-17:2006(E) Foreword ISo (the International Organization for Standardization) and IEC (the International Electrotechnical Commission)formthe specialized system forworldwide 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 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 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 circulated tonational 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 responsible for identifying any or all such patent rights. ISO/IEC 21000-17 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Su