1、Information technology Digital publishing EPUB 3.0.1 Part 5:Media overlaysTechnologies de linformation Publications numriques EPUB 3.0.1 Partie 5:Superposition de mdiasINTERNATIONAL STANDARDISO/IEC23736-5Reference numberISO/IEC 23736-5:2020(E)First edition2020-02 ISO/IEC 2020 ISO/IEC 23736-5:2020(E)
2、ii ISO/IEC 2020 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 2020All rights reserved.Unless otherwise specified,or required in the context of its implementation,no part of this publication may be reproduced or utilized otherwise in any form or by any means,electronic or mechanical,includi
3、ng photocopying,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 officeCP 401 Ch.de Blandonnet 8CH-1214 Vernier,GenevaPhone:+41 22 749 01 11Fax
4、:+41 22 749 09 47Email:copyrightiso.orgWebsite:www.iso.orgPublished in SwitzerlandISO/IEC 23736-5:2020(E)ISO/IEC 2020 All rights reserved iiiForeword ISO(the International Organization for Standardization)and IEC(the International Electrotechnical Commission)form the specialized system for worldwide
5、 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 field
6、s of mutual interest.Other international organizations,governmental and nongovernmental,in liaison with ISO and IEC,also take part in the work.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives,Part 1.In particular,the
7、different approval criteria needed for the different types of document should be noted(see www.iso.org/directives).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
8、 such patent rights.Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received(see www.iso.org/patents)or the IEC list of patent declarations received(see http:/patents.iec.ch).Any trade name used
9、in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation of the voluntary nature of standards,the meaning of ISO specific terms and expressions related to conformity assessment,as well as information about ISOs adherence to the Worl
10、d Trade Organization(WTO)principles in the Technical Barriers to Trade(TBT),see www.iso.org/iso/foreword.html.This document was prepared by the World Wide Web Consortium(W3C)(as EPUB Media Overlays 3.0.1)and drafted in accordance with its editorial rules.It was adopted,under the JTC 1 PAS procedure,
11、by Joint Technical Committee ISO/IEC JTC 1,Information technology.A list of all parts in the ISO/IEC 23736 series can be found on the ISO websitete.Any feedback or questions on this document should be directed to the users national standards body.A complete listing of these bodies can be found at ww
12、w.iso.org/members.html.EPUB Media Overlays 3.0.1Recommended Specification 26 June 2014THIS VERSIONhttp:/www.idpf.org/epub/301/spec/epub-mediaoverlays-20140626.htmlLATEST VERSIONhttp:/www.idpf.org/epub3/latest/mediaoverlaysPREVIOUS VERSIONhttp:/www.idpf.org/epub/301/spec/epub-mediaoverlays-20140228.h
13、tmlA diff of changes from the previous version is also available.Please refer to the errata for this document,which may include some normative corrections.Copyright 2010-2013 International Digital Publishing ForumAll rights reserved.This work is protected under Title 17 of the United States Code.Rep
14、roduction anddissemination of this work with changes is prohibited except with the written permission of the InternationalDigital Publishing Forum(IDPF).EPUB is a registered trademark of the International Digital Publishing Forum.EditorsMarisa DeMeglio,DAISY ConsortiumDaniel Weck,DAISY ConsortiumTAB
15、LE OF CONTENTS1.Overview1.1.Purpose and Scope1.2.Relationship to Other Specifications1.3.Terminology1.4.Typographic Conventions1.5.Conformance Statements1.6.Namespace prefix mappings2.Media Overlay Document Definition2.1.Introduction2.2.Content Conformance2.3.Reading System Conformance2.4.Media Over
16、lay Document Definition2.4.1.The smil Element2.4.2.The head Element2.4.3.The metadata Element2.4.4.The body Element2.4.5.The seq Element2.4.6.The par Element2.4.7.The text Element2.4.8.The audio ElementISO/IEC 23736-5:2020(E)ISO/IEC 2020 All rights reserved1 3.Creating Media Overlays3.1.Overview3.2.Relationship to the EPUB Content Document3.2.1.Structure3.2.2.Granularity3.2.3.Embedded Audio and Video3.2.4.Text-to-Speech3.3.Semantic Inflection3.4.Associating Style Information3.5.Packaging3.5.1.In
