ISO/IEC 14496-30:2018

Information technology — Coding of audio-visual objects — Part 30: Timed text and other visual overlays in ISO base media file format

This document describes the carriage of some forms of timed text and subtitle streams in files based on ISO/IEC 14496-12 (the ISO base media file format). The documentation of these forms does not preclude other definition of carriage of timed text or subtitles; see, for example, 3GPP Timed Text (3GPP TS 26.245), or the carriage of captioning information embedded in a media stream of another type (see Annex A).

Technologies de l'information — Codage des objets audiovisuels — Partie 30: Texte temporisé et autres recouvrements visuels dans le format ISO de base pour les fichiers médias

General Information

• Status: Published
• Publication Date: 06-Nov-2018
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Drafting Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Current Stage: 9060 - Close of review
• Start Date: 04-Jun-2029

Relations

• Amended By: ISO/IEC 14496-30:2018/Amd 1:2022 - Information technology — Coding of audio-visual objects — Part 30: Timed text and other visual overlays in ISO base media file format — Amendment 1: Timing improvements
• Effective Date: 26-Nov-2021
• Revises: ISO/IEC 14496-30:2014 - Information technology — Coding of audio-visual objects — Part 30: Timed text and other visual overlays in ISO base media file format
• Effective Date: 10-Feb-2018

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 14496-30
Second edition
2018-11
Information technology — Coding of
audio-visual objects —
Part 30:
Timed text and other visual overlays
in ISO base media file format
Technologies de l'information — Codage des objets audiovisuels —
Partie 30: Texte temporisé et autres recouvrements visuels dans le
format ISO de base pour les fichiers médias
Reference number
ISO/IEC 14496-30:2018(E)
©
ISO/IEC 2018

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ISO/IEC 14496-30:2018(E)

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ii © ISO/IEC 2018 – All rights reserved

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ISO/IEC 14496-30:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 General definitions . 2
4.1 Layout . 2
4.2 Timing . 3
4.3 Language . 3
4.4 Resources shared by multiple samples . 4
4.5 Associating timed text tracks. 4
5 Timed Text Markup Language (TTML) . 4
5.1 General . 4
5.2 Layout . 4
5.3 Timing . 4
5.4 Track format .
...