ISO/IEC TS 30135-5:2014 PDF
Information technology — Digital publishing — EPUB3 — Part 5: Media Overlay
Information technology — Digital publishing — EPUB3 — Part 5: Media Overlay
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 28
- Дата публикации:
- 5 ноября 2014 г.
- Издание:
- ISO/IEC TS 30135 edition 1 version 1
- ICS:
- 35.240.30
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 the 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 specifications 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 conformance 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 resources into a single-file (ZIP) EPUB Container.
Abstract
Overview
ISO/IEC TS 30135-5:2014 specifies EPUB Media Overlays 3.0, a defined usage of SMIL (Synchronized Multimedia Integration Language), the EPUB Package Document, EPUB Style Sheets and EPUB Content Documents to represent pre‑recorded audio synchronized with EPUB content. Part of the EPUB 3 family, this Technical Specification describes the Media Overlay file format (a SMIL subset), document structure, packaging and reading system behavior required to deliver synchronized audio narration in EPUB publications.
Key topics and technical requirements
- SMIL-based Media Overlay Documents: Media overlays are XML documents (SMIL namespace) whose root element is and which must declare SMIL version 3.0. The recommended filename extension is .smil.
- Core elements: Defined elements include smil, head, metadata, body, seq, par, text and audio to model sequential and parallel timing relationships between textual content and audio.
- Content conformance: Media Overlays must be valid against the Media Overlays schema (Appendix A) and mirror the structure and granularity of the associated EPUB Content Document (XHTML/SVG).
- Packaging and manifest: Media Overlay resources are Publication Resources that must be listed in the EPUB manifest and packaged in the EPUB Container (OCF).
- Reading System behavior: Support for Media Overlays is optional for EPUB Reading Systems. Systems that do support overlays must implement timing, synchronization, audio rendering, navigation while playback is active, and rules for embedded audio/video. Text‑to‑Speech (TTS) interactions and recommended skippability/escapability behaviors are specified.
- Conformance language: Normative keywords (MUST, SHOULD, MAY, etc.) follow RFC2119 and apply to the document’s requirements.
- Scope limitations: This TS addresses audio synchronization only; video synchronization is not included in this version.
Applications and who uses it
- Publishers and content creators building enhanced e‑books with narrated audio (read‑aloud books, language learning materials, accessible EPUBs for print‑disabled readers).
- Developers of EPUB Reading Systems implementing synchronized playback, navigation and accessibility features.
- Accessibility specialists and educational technologists integrating audio with structural semantics (epub:type, text references) to support learning and assistive use cases.
- Tooling vendors (EPUB authoring and conversion tools) that generate or validate .smil Media Overlay files and package them correctly in EPUB containers.
Related standards
- EPUB 3 Overview (EPUB3Overview)
- EPUB Publications 3.0 (Publications30)
- EPUB Content Documents 3.0 (ContentDocs30)
- EPUB Open Container Format (OCF) 3.0 (OCF3)
- SMIL (W3C Synchronized Multimedia Integration Language)
Keywords: EPUB3, Media Overlay, SMIL, .smil, audio synchronization, EPUB Content Document, EPUB Reading System, EPUB Container, accessibility, TTS.
Технические детали
- Технический комитет
- ISO/IEC JTC 1/SC 34 - Document description and processing languages
- SKU
- ISO/IEC TS 30135-5:2014
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