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    ISO IEC TS 30135-5-2014 Information technology - Digital publishing - EPUB3 - Part 5 Media Overlay《信息技术 数字出版 EPUB3 第5部分 媒体覆盖》.pdf

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    ISO IEC TS 30135-5-2014 Information technology - Digital publishing - EPUB3 - Part 5 Media Overlay《信息技术 数字出版 EPUB3 第5部分 媒体覆盖》.pdf

    1、 Reference number ISO/IEC TS 30135-5:2014(E) ISO/IEC 2014TECHNICAL SPECIFICATION ISO/IEC TS 30135-5 First edition 2014-11-15Information technology Digital publishing EPUB3 Part 5: Media Overlay Technologies de linformation Publications numriques EPUB3 Partie 5: Superposition de mdias ISO/IEC TS 3013

    2、5-5:2014(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 photocopying, or posting on the internet or an intranet, without

    3、 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 09 47 E-mail copyrightiso.org Web www.iso.org Published in Sw

    4、itzerland ii ISO/IEC 2014 All rights reservedISO/IEC TS 30135-5:201 4(E) 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

    5、 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, gover

    6、nmental 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, Pa

    7、rt 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 to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national

    8、 bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such documents, the joint technical committee may decide to publish an ISO/IEC Technical Specification (ISO/IEC TS), which represents an agreement between the members of the joint technical co

    9、mmittee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/IEC TS is reviewed after three years in order to decide whether it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If the IS

    10、O/IEC TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. 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

    11、 not be held responsible for identifying any or all such patent rights. ISO/IEC TS 30135 series were prepared by Korean Agency for Technology and Standards (as KS X 6070 series) with International Digital Publishing Forum and were adopted, under a special “fast-track procedure”, by Joint Technical C

    12、ommittee ISO/IEC JTC 1, Information technology, in parallel with its approval by the national bodies of ISO and IEC. ISO/IEC TS 30135 consists of the following parts, under the general title Information technology Document description and processing languages EPUB 3: Part 1: Overview Part 2: Publica

    13、tions Part 3: Content Documents Part 4: Open Container Format Part 5: Media Overlay Part 6: Canonical Fragment Identifier Part 7: Fixed-Layout Documents EPUB Media Overlays 3.0 Recommended Specification 11 October 2011 THIS VERSION http:/www.idpf.org/epub/30/spec/epub30-mediaoverlays-20111011.html L

    14、ATEST VERSION http:/www.idpf.org/epub/30/spec/epub30-mediaoverlays.html PREVIOUS VERSION http:/www.idpf.org/epub/30/spec/epub30-mediaoverlays-20110908.html A diff of changes from the previous draft is available at this link. Please refer to the errata for this document, which may include some normat

    15、ive corrections. Copyright 2010, 2011 International Digital Publishing Forum All rights reserved. This work is protected under Title 17 of the United States Code. Reproduction and dissemination of this work with changes is prohibited except with the written permission of the International Digital Pu

    16、blishing Forum (IDPF). EPUB is a registered trademark of the International Digital Publishing Forum. Editors Marisa DeMeglio, DAISY Consortium Daniel Weck, DAISY Consortium TAB LE O F CO NTENTS 1. Overview 1.1. Purpose and Scope 1.2. Relationship to Other Specifications 1.3. Terminology 1.4. Conform

    17、ance Statements 2. Media Overlay Document Definition 2.1. Introduction 2.2. Content Conformance 2.3. Reading System Conformance 2.4. Media Overlay Document Definition 2.4.1. The smil Element 2.4.2. The head Element 2.4.3. The metadata Element 2.4.4. The body Element 2.4.5. The seq Element 2.4.6. The

    18、 par Element 2.4.7. The text Element 2.4.8. The audio Element 3. Creating Media Overlays 3.1. Overview 3.2. Relationship to the EPUB Content Document 3.2.1. Structure 3.2.2. Granularity 3.2.3. Embedded Audio and Video 3.2.4. Text-to-Speech 3.3. Semantic Inflection 3.4. Associating Style Information

    19、3.5. Packaging 3.5.1. Including Media Overlays 3.5.2. Media Overlays Metadata Vocabulary 4. Playback Behaviors 4.1. Loading the Media Overlay 4.2. Basic Playback 4.2.1. Timing and Synchronization 4.2.2. Rendering Audio 4.2.3. Rendering EPUB Content Document Elements 4.3. Interacting with the EPUB Co

    20、ntent Document 4.3.1. Navigation 4.3.2. Embedded Audio and Video 4.3.3. Text-to-Speech 4.4. Skippability and Escapability 4.4.1. Skippability 4.4.2. Escapability A. Media Overlays Schema A.1. Using the Media Overlays Schema B. Examples of Clock Values C. Acknowledgements and Contributors References

    21、1 Overview 1.1 Purpose and Scope This section is informative This specification, EPUB Media Overlays 3.0, defines a usage of SMIL (Synchronized Multimedia Integration Language), the Package Document, the EPUB Style Sheet, and the EPUB Content Document for representation of audio synchronized with th

    22、e EPUB Content Document. This specification is one of a family of related specifications that compose EPUB 3, the third major revision of an interchange and delivery format for digital publications based on XML and Web Standards. It is meant to be read and understood in concert with the other specif

    23、ications that make up EPUB 3: The EPUB 3 Overview EPUB3Overview, which provides an informative overview of EPUB and a roadmap to the rest of the EPUB 3 documents. The Overview should be read first. EPUB Publications 3.0 Publications30, which defines publication-level semantics and overarching confor

    24、mance requirements for EPUB Publications. EPUB Content Documents 3.0 ContentDocs30, which defines profiles of XHTML, SVG and CSS for use in the context of EPUB Publications. EPUB Open Container Format (OCF) 3.0 OCF3, which defines a file format and processing model for encapsulating a set of related

    25、 resources into a single-file (ZIP) EPUB Container. 1.2 Relationship to Other Specifications This section is informative This specification relies on a subset of SMIL, from which the EPUB Media Overlays elements and attributes defined in Media Overlay Document Definition are derived. 1.3 Terminology

    26、 EPUB Publication (or Publication) A logical document entity consisting of a set of interrelated resources and packaged in an EPUB Container, as defined by this specification and its sibling specifications. Publication Resource A resource that contains content or instructions that contribute to the

    27、logic and rendering of the EPUB Publication. In the absence of this resource, the Publication might not render as intended by the Author. Examples of Publication Resources include the Package Document, EPUB Content Documents, EPUB Style Sheets, audio, video, images, embedded fonts and scripts. With

    28、the exception of the Package Document itself, Publication Resources must be listed in the manifest Publications30 and must be bundled in the EPUB container file unless specified otherwise in Publication Resource Locations Publications30. Examples of resources that are not Publication Resources inclu

    29、de those identified by the Package Document link Publications30 element and those identified in outbound hyperlinks that resolve outside the EPUB Container (e.g., referenced from an HTML5 a element href attribute). EPUB Content Document A Publication Resource that conforms to one of the EPUB Content

    30、 Document definitions (XHTML or SVG). An EPUB Content Document is a Core Media Type, and may therefore be included in the EPUB Publication without the provision of fallbacks Publications30. XHTML Content Document An EPUB Content Document conforming to the profile of HTML5 defined in XHTML Content Do

    31、cuments ContentDocs30. XHTML Content Documents use the XHTML syntax of HTML5. SVG Content Document An EPUB Content Document conforming to the constraints expressed in SVG Content Documents ContentDocs30. EPUB Navigation Document A specialization of the XHTML Content Document, containing human- and m

    32、achine-readable global navigation information, conforming to the constraints expressed in EPUB Navigation Documents ContentDocs30. Core Media Type A set of Publication Resource types for which no fallback is required. Refer to Publication Resources Publications30 for more information. Package Docume

    33、nt A Publication Resource carrying bibliographical and structural metadata about the EPUB Publication, as defined in Package Documents Publications30. Manifest A list of all Publication Resources that constitute the EPUB Publication. Refer to manifest Publications30 for more information. Spine An or

    34、dered list of Publication Resources, typically EPUB Content Documents, representing the default reading order of the Publication. Refer to spine Publications30 for more information. Media Overlay Document An XML document that associates the XHTML Content Document with pre-recorded audio narration in

    35、 order to provide a synchronized playback experience, as defined in this specification. Text-to-Speech (TTS) The rendering of the textual content of an EPUB Publication as artificial human speech using a synthesized voice. EPUB Style Sheet (or Style Sheet) A CSS Style Sheet conforming to the CSS pro

    36、file defined in EPUB Style Sheets ContentDocs30. Viewport The region of an EPUB Reading System in which the content of an EPUB Publication is rendered visually to a User. CSS Viewport A Viewport capable of displaying CSS-styled content. EPUB Container (or Container) The ZIP-based packaging and distr

    37、ibution format for EPUB Publications defined in OCF3. Author The person(s) or organization responsible for the creation of an EPUB Publication, which is not necessarily the creator of the content and resources it contains. User An individual that consumes an EPUB Publication using an EPUB Reading Sy

    38、stem. EPUB Reading System (or Reading System) A system that processes EPUB Publications for presentation to a User in a manner conformant with this specification and its sibling specifications. 1.4 Conformance Statements The keywords “MUST“, “MUST NOT“, “REQUIRED“, “SHALL“, “SHALL NOT“, “SHOULD“, “S

    39、HOULD NOT“, “RECOMMENDED“, “MAY“, and “OPTIONAL“ in this document are to be interpreted as described in RFC2119. All sections of this specification are normative except where identified by the informative status label “This section is informative“. The application of informative status to sections a

    40、nd appendices applies to all child content and subsections they may contain. All examples in this specification are informative. 2 Media Overlay Document Definition 2.1 Introduction This section is informative Books featuring synchronized audio narration are found in mainstream e-books, educational

    41、tools and e- books formatted for persons with print disabilities. In EPUB 3, these types of books are created by using Media Overlay Documents to describe the timing for the pre-recorded audio narration and how it relates to the EPUB Content Document markup. The file format for Media Overlays is def

    42、ined as a subset of SMIL, a W3C recommendation for representing synchronized multimedia information in XML. The Media Overlays feature is designed to be transparent to EPUB Reading Systems that do not support the feature. The inclusion of Media Overlays in an EPUB Publication has no impact on the ab

    43、ility of Media Overlay-unaware Reading Systems to render that Publication as a “regular“ EPUB Publication. Although future versions of this specification may incorporate support for video media (e.g., synchronized text/sign-language books), this version supports only synchronizing audio media with t

    44、he EPUB Content Document. 2.2 Content Conformance A Media Overlay Document must meet all of the following criteria: Document Properties It must meet the conformance constraints for XML documents defined in XML Conformance Publications30. It must be valid to the Media Overlays schema as defined in Ap

    45、pendix A, Media Overlays Schema and conform to all content conformance constraints expressed in Media Overlay Document Definition. It must be authored to reflect the structure of the EPUB Content Document with which it is associated, as stated in Structure . Authors should avoid using scripts to con

    46、trol audio and video embedded in the EPUB Content Document, as stated in Embedded Audio and Video. It should use semantic markup where appropriate, as described in Semantic Inflection. It must be packaged with the EPUB Publication as shown in Packaging. File Properties The Media Overlay Document fil

    47、ename should use the file extension .smil . 2.3 Reading System Conformance EPUB Reading System support for Media Overlays is optional. A Reading System that supports Media Overlays must meet the following criteria: It must process the Media Overlay Document in conformance with all Reading System con

    48、formance constraints expressed in Media Overlay Document Definition. It must support XHTML Content Documents, and it may support SVG Content Documents. It must render Media Overlay elements as described in Basic Playback. It must allow User navigation while a Media Overlay is being played, as discus

    49、sed in Navigation. It must adhere to rules regarding referenced audio and video embedded in the EPUB Content Document, as stated in Embedded Audio and Video. Text-to-Speech (TTS)-capable Reading Systems should conform to Reading System Text-to- Speech Conformance Requirements Publications30. It should offer the skippability and escapability features described in Skippability and Escapability. A Reading System that does not support Media Overlays mu


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