Rec. ITU-T H.265 v3 (04/2015) iii
CONTENTS
Page
0 Introduction .................................................................................................................................................... 1
0.1 General ................................................................................................................................................ 1
0.2 Prologue .............................................................................................................................................. 1
0.3 Purpose ................................................................................................................................................ 1
0.4 Applications ........................................................................................................................................ 1
0.5 Publication and versions of this Specification ..................................................................................... 2
0.6 Profiles, tiers and levels ...................................................................................................................... 2
0.7 Overview of the design characteristics ................................................................................................ 2
0.8 How to read this Specification ............................................................................................................ 3
1 Scope .............................................................................................................................................................. 4
2 Normative references...................................................................................................................................... 4
2.1 General ................................................................................................................................................ 4
2.2 Identical Recommendations | International Standards ........................................................................ 4
2.3 Paired Recommendations | International Standards equivalent in technical content ........................... 4
2.4 Additional references .......................................................................................................................... 4
3 Definitions ...................................................................................................................................................... 4
4 Abbreviations and acronyms .......................................................................................................................... 13
5 Conventions .................................................................................................................................................... 15
5.1 General ................................................................................................................................................ 15
5.2 Arithmetic operators ............................................................................................................................ 15
5.3 Logical operators ................................................................................................................................. 15
5.4 Relational operators............................................................................................................................. 16
5.5 Bit-wise operators ............................................................................................................................... 16
5.6 Assignment operators .......................................................................................................................... 16
5.7 Range notation .................................................................................................................................... 16
5.8 Mathematical functions ....................................................................................................................... 17
5.9 Order of operation precedence ............................................................................................................ 17
5.10 Variables, syntax elements and tables ................................................................................................. 18
5.11 Text description of logical operations ................................................................................................. 19
5.12 Processes ............................................................................................................................................. 20
6 Bitstream and picture formats, partitionings, scanning processes and neighbouring relationships ................ 20
6.1 Bitstream formats ................................................................................................................................ 20
6.2 Source, decoded and output picture formats ....................................................................................... 20
6.3 Partitioning of pictures, slices, slice segments, tiles, coding tree units and coding tree blocks .......... 23
6.3.1 Partitioning of pictures into slices, slice segments and tiles.................................................. 23
6.3.2 Block and quadtree structures ............................................................................................... 24
6.3.3 Spatial or component-wise partitionings ............................................................................... 25
6.4 Availability processes ......................................................................................................................... 25
6.4.1 Derivation process for z-scan order block availability .......................................................... 25
6.4.2 Derivation process for prediction block availability ............................................................. 26
6.5 Scanning processes .............................................................................................................................. 27
6.5.1 Coding tree block raster and tile scanning conversion process ............................................. 27
6.5.2 Z-scan order array initialization process ............................................................................... 28
6.5.3 Up-right diagonal scan order array initialization process ...................................................... 28
6.5.4 Horizontal scan order array initialization process ................................................................. 29
6.5.5 Vertical scan order array initialization process ..................................................................... 29
7 Syntax and semantics ..................................................................................................................................... 30
7.1 Method of specifying syntax in tabular form ...................................................................................... 30
7.2 Specification of syntax functions and descriptors ............................................................................... 31
7.3 Syntax in tabular form ......................................................................................................................... 33
7.3.1 NAL unit syntax .................................................................................................................... 33
7.3.1.1 General NAL unit syntax ..................................................................................... 33
7.3.1.2 NAL unit header syntax ....................................................................................... 33
