Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
   3.1 Definitions
   3.2 Abbreviations
4 Introduction to DVB subtitling system
   4.1 Overview
   4.2 Data hierarchy and terminology
   4.3 Temporal hierarchy and terminology
5 Subtitle decoder model
   5.1 Decoder temporal model
   5.2 Buffer memory model
   5.3 Cumulative display construction
   5.4 Decoder rendering bandwidth model
6 PES packet format
7 The PES packet data for subtitling
   7.1 Syntax and semantics of the PES data field for
       subtitling
   7.2 Syntax and semantics of the subtitling segment
8 Requirements for the subtitling data
   8.1 Scope of Identifiers
   8.2 Scope of dependencies
   8.3 Order of delivery
   8.4 Positioning of regions and objects
   8.5 Avoiding excess pixel-data capacity
9 Translation to colour components
   9.1 4- to 2-bit reduction
   9.2 8- to 2-bit reduction
   9.3 8- to 4-bit reduction
10 Default CLUTs and map-tables contents
   10.1 256-entry CLUT default contents
   10.2 16-entry CLUT default contents
   10.3 4-entry CLUT default contents
   10.4 2_to_4-bit_map-table default contents
   10.5 2_to_8-bit_map-table default contents
   10.6 4_to_8-bit_map-table default contents
Annex A (informative): How the DVB subtitling system works
    A.1 Data hierarchy and terminology
    A.2 Temporal hierarchy and terminology
    A.3 Decoder temporal model
    A.4 Decoder display technology model
    A.5 Decoder rendering bandwidth model
    A.6 Examples of the subtitling system in operation
    A.7 Glossary
History

Abstract

Specifies the method by which subtitles, logos and other graphical elements may be coded and carried in DVB bitstreams.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	BROADCAS
Supersedes	PRETS 300 743 : JUN 97