Introduction ............................................................................................................................................................. 1
Purpose ......................................................................................................................................................... 1
Profiles, tiers, and levels .............................................................................................................................. 1
Encoding process, decoding process, and use of VUI parameters and SEI messages .................................. 1
Versions of this Recommendation | International Standard ......................................................................... 2
Overview of the design characteristics ......................................................................................................... 2
How to read this document .......................................................................................................................... 2
1 Scope ............................................................................................................................................................ 2
2 Normative references ................................................................................................................................... 3
2.1 Identical Recommendations | International Standards ...................................................................... 3
2.2 Paired Recommendations | International Standards equivalent in technical content ........................ 3
2.3 Additional references ........................................................................................................................ 3
3 Definitions .................................................................................................................................................... 3
4 Abbreviations ............................................................................................................................................. 11
5 Conventions ............................................................................................................................................... 13
5.1 General ............................................................................................................................................ 13
5.2 Arithmetic operators ....................................................................................................................... 13
5.3 Logical operators ............................................................................................................................ 14
5.4 Relational operators ........................................................................................................................ 14
5.5 Bit-wise operators ........................................................................................................................... 14
5.6 Assignment operators ..................................................................................................................... 14
5.7 Range notation ................................................................................................................................ 15
5.8 Mathematical functions ................................................................................................................... 15
5.9 Order of operation precedence ........................................................................................................ 15
5.10 Variables, syntax elements and tables ............................................................................................. 16
5.11 Text description of logical operations ............................................................................................. 17
5.12 Processes ......................................................................................................................................... 18
6 Bitstream and picture formats, partitionings, scanning processes and neighbouring relationships ............ 19
6.1 Bitstream formats ............................................................................................................................ 19
6.2 Source, decoded and output picture formats ................................................................................... 19
6.3 Partitioning of pictures, subpictures, slices, tiles, and CTUs .......................................................... 21
6.3.1 Partitioning of pictures into subpictures, slices, and tiles ............................................. 21
6.3.2 Block, quadtree and multi-type tree structures ............................................................. 23
6.3.3 Spatial or component-wise partitionings ....................................................................... 23
6.4 Availability processes ..................................................................................................................... 24
6.4.1 Allowed quad split process ........................................................................................... 24
6.4.2 Allowed binary split process ......................................................................................... 25
6.4.3 Allowed ternary split process ........................................................................................ 26
6.4.4 Derivation process for neighbouring block availability ................................................ 27
6.5 Scanning processes ......................................................................................................................... 28
6.5.1 CTB raster scanning, tile scanning, and subpicture scanning processes ....................... 28
6.5.2 Up-right diagonal scan order array initialization process ............................................. 32
6.5.3 Horizontal and vertical traverse scan order array initialization process........................ 32
7 Syntax and semantics ................................................................................................................................. 33
7.1 Method of specifying syntax in tabular form .................................................................................. 33
7.2 Specification of syntax functions and descriptors ........................................................................... 34
7.3 Syntax in tabular form .................................................................................................................... 35
7.3.1 NAL unit syntax ........................................................................................................... 35
7.3.2 Raw byte sequence payloads, trailing bits and byte alignment syntax.......................... 36
7.3.3 Profile, tier, and level syntax ........................................................................................ 55
7.3.4 DPB parameters syntax ................................................................................................. 57
7.3.5 Timing and HRD parameters syntax ............................................................................. 58
7.3.6 Supplemental enhancement information message syntax ............................................. 59
7.3.7 Slice header syntax ....................................................................................................... 59
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