ISOIEC14496-10-2014

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ISO14496

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Reference numbe

ISO/IEC 14496-10:2014(E)

ISO/IEC 2014

INTERNATIONAL

STANDARD

ISO/IEC

14496-10

Eighth edition

2014-09-01

Information technology — Coding of

audio-visual objects —

Part 10:

Advanced Video Coding

Technologies de l'information — Codage des objets audiovisuels —

Partie 10: Codage visuel avancé

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ISO/IEC 14496-10:2014(E)

iii

Contents Page

0 Introduction ............................................................................................................................................................. xvii

0.1 Prologue ........................................................................................................................................................... xvii

0.2 Purpose ............................................................................................................................................................. xvii

0.3 Applications ..................................................................................................................................................... xvii

0.4 Publication and versions of this Specification .................................................................................................. xvii

0.5 Profiles and levels ........................................................................................................................................... xviii

0.6 Overview of the design characteristics .............................................................................................................. xix

0.6.1 Predictive coding ....................................................................................................................................... xix

0.6.2 Coding of progressive and interlaced video ............................................................................................... xx

0.6.3 Picture partitioning into macroblocks and smaller partitions ..................................................................... xx

0.6.4 Spatial redundancy reduction ..................................................................................................................... xx

0.7 How to read this Specification ........................................................................................................................... xx

1 Scope ............................................................................................................................................................................. 1

2 Normative references .................................................................................................................................................. 1

3 Definitions .................................................................................................................................................................... 1

4 Abbreviations .............................................................................................................................................................. 9

5 Conventions ............................................................................................................................................................... 10

5.1 Arithmetic operators ........................................................................................................................................... 10

5.2 Logical operators ................................................................................................................................................ 11

5.3 Relational operators ............................................................................................................................................ 11

5.4 Bit-wise operators .............................................................................................................................................. 11

5.5 Assignment operators ......................................................................................................................................... 11

5.6 Range notation ................................................................................................................................................... 12

5.7 Mathematical functions ...................................................................................................................................... 12

5.8 Order of operation precedence ........................................................................................................................... 13

5.9 Variables, syntax elements, and tables ............................................................................................................... 14

5.10 Text description of logical operations ................................................................................................................ 14

5.11 Processes ............................................................................................................................................................ 15

6 Source, coded, decoded and output data formats, scanning processes, and neighbouring relationships .......... 16

6.1 Bitstream formats ............................................................................................................................................... 16

6.2 Source, decoded, and output picture formats ..................................................................................................... 16

6.3 Spatial subdivision of pictures and slices ........................................................................................................... 21

6.4 Inverse scanning processes and derivation processes for neighbours ................................................................ 22

6.4.1 Inverse macroblock scanning process ........................................................................................................ 22

6.4.2 Inverse macroblock partition and sub-macroblock partition scanning process .......................................... 23

6.4.3 Inverse 4x4 luma block scanning process .................................................................................................. 25

6.4.4 Inverse 4x4 Cb or Cr block scanning process for ChromaArrayType equal to 3 ....................................... 25

6.4.5 Inverse 8x8 luma block scanning process .................................................................................................. 25

6.4.6 Inverse 8x8 Cb or Cr block scanning process for ChromaArrayType equal to 3 ....................................... 26

6.4.7 Inverse 4x4 chroma block scanning process .............................................................................................. 26

6.4.8 Derivation process of the availability for macroblock addresses ............................................................... 26

6.4.9 Derivation process for neighbouring macroblock addresses and their availability .................................... 26

6.4.10 Derivation process for neighbouring macroblock addresses and their availability in MBAFF frames ...... 27

6.4.11 Derivation processes for neighbouring macroblocks, blocks, and partitions ............................................. 28

6.4.12 Derivation process for neighbouring locations ........................................................................................... 33

6.4.13 Derivation processes for block and partition indices .................................................................................. 35

7 Syntax and semantics ................................................................................................................................................ 37

7.1 Method of specifying syntax in tabular form ..................................................................................................... 37

7.2 Specification of syntax functions, categories, and descriptors ........................................................................... 38

7.3 Syntax in tabular form ........................................................................................................................................ 40

7.3.1 NAL unit syntax ......................................................................................................................................... 40

Provided by IHS under license with ISO

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ISO/IEC 14496-10:2014(E)

7.3.2

Raw byte sequence payloads and RBSP trailing bits syntax ....................................................................... 40

7.3.3 Slice header syntax ..................................................................................................................................... 49

7.3.4 Slice data syntax ......................................................................................................................................... 54

7.3.5 Macroblock layer syntax ............................................................................................................................. 55

7.4 Semantics ............................................................................................................................................................ 62

7.4.1 NAL unit semantics .................................................................................................................................... 62

7.4.2 Raw byte sequence payloads and RBSP trailing bits semantics ................................................................. 72

7.4.3 Slice header semantics ................................................................................................................................ 86

7.4.4 Slice data semantics .................................................................................................................................... 98

7.4.5 Macroblock layer semantics........................................................................................................................ 98

8 Decoding process ..................................................................................................................................................... 111

8.1 NAL unit decoding process .............................................................................................................................. 112

8.2 Slice decoding process ...................................................................................................................................... 113

8.2.1 Decoding process for picture order count ................................................................................................. 113

8.2.2 Decoding process for macroblock to slice group map .............................................................................. 117

8.2.3 Decoding process for slice data partitions ................................................................................................ 121

8.2.4 Decoding process for reference picture lists construction ......................................................................... 121

8.2.5 Decoded reference picture marking process ............................................................................................. 128

8.3 Intra prediction process ..................................................................................................................................... 133

8.3.1 Intra_4x4 prediction process for luma samples......................................................................................... 133

8.3.2 Intra_8x8 prediction process for luma samples......................................................................................... 140

8.3.3 Intra_16x16 prediction process for luma samples ..................................................................................... 148

8.3.4 Intra prediction process for chroma samples............................................................................................. 150

8.3.5 Sample construction process for I_PCM macroblocks ............................................................................. 154

8.4 Inter prediction process ..................................................................................................................................... 155

8.4.1 Derivation process for motion vector components and reference indices ................................................. 158

8.4.2 Decoding process for Inter prediction samples ......................................................................................... 170

8.4.3 Derivation process for prediction weights ................................................................................................ 179

8.5 Transform coefficient decoding process and picture construction process prior to deblocking filter process .. 182

8.5.1 Specification of transform decoding process for 4x4 luma residual blocks .............................................. 182

8.5.2 Specification of transform decoding process for luma samples of Intra_16x16 macroblock prediction

mode ......................................................................................................................................................... 183

8.5.3 Specification of transform decoding process for 8x8 luma residual blocks .............................................. 184

8.5.4 Specification of transform decoding process for chroma samples ............................................................ 184

8.5.5 Specification of transform decoding process for chroma samples with ChromaArrayType equal to 3 .... 186

8.5.6 Inverse scanning process for 4x4 transform coefficients and scaling lists ................................................ 186

8.5.7 Inverse scanning process for 8x8 transform coefficients and scaling lists ................................................ 187

8.5.8 Derivation process for chroma quantisation parameters ........................................................................... 189

8.5.9 Derivation process for scaling functions ................................................................................................... 189

8.5.10 Scaling and transformation process for DC transform coefficients for Intra_16x16 macroblock type ..... 191

8.5.11 Scaling and transformation process for chroma DC transform coefficients ............................................. 191

8.5.12 Scaling and transformation process for residual 4x4 blocks ..................................................................... 193

8.5.13 Scaling and transformation process for residual 8x8 blocks ..................................................................... 196

8.5.14 Picture construction process prior to deblocking filter process................................................................. 200

8.5.15 Intra residual transform-bypass decoding process .................................................................................... 201

8.6 Decoding process for P macroblocks in SP slices or SI macroblocks .............................................................. 202

8.6.1 SP decoding process for non-switching pictures ....................................................................................... 202

8.6.2 SP and SI slice decoding process for switching pictures .......................................................................... 205

8.7 Deblocking filter process .................................................................................................................................. 207

8.7.1 Filtering process for block edges .............................................................................................................. 211

8.7.2 Filtering process for a set of samples across a horizontal or vertical block edge ...................................... 213

9 Parsing process ....................................................................................................................................................... 219

9.1 Parsing process for Exp-Golomb codes ............................................................................................................ 219

9.1.1 Mapping process for signed Exp-Golomb codes ...................................................................................... 221

9.1.2 Mapping process for coded block pattern ................................................................................................. 221

9.2 CAVLC parsing process for transform coefficient levels ................................................................................. 224

9.2.1 Parsing process for total number of non-zero transform coefficient levels and number of trailing ones .. 225

9.2.2 Parsing process for level information ....................................................................................................... 229

9.2.3 Parsing process for run information .......................................................................................................... 230

Provided by IHS under license with ISO

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ISO/IEC 14496-10:2014(E)

9.2.4

Combining level and run information ...................................................................................................... 233

9.3 CABAC parsing process for slice data ............................................................................................................. 233

9.3.1 Initialisation process ................................................................................................................................. 235

9.3.2 Binarization process ................................................................................................................................. 259

9.3.3 Decoding process flow ............................................................................................................................. 268

9.3.4 Arithmetic encoding process (informative) .............................................................................................. 290

Annex A (normative) Profiles and levels ...................................................................................................................... 298

A.1 Requirements on video decoder capability ....................................................................................................... 298

A.2 Profiles ............................................................................................................................................................. 298

A.2.1 Baseline profile ........................................................................................................................................ 298

A.2.2 Main profile .............................................................................................................................................. 299

A.2.3 Extended profile ....................................................................................................................................... 299

A.2.4 High profile .............................................................................................................................................. 300

A.2.5 High 10 profile ......................................................................................................................................... 301

A.2.6 High 4:2:2 profile ..................................................................................................................................... 301

A.2.7 High 4:4:4 Predictive profile .................................................................................................................... 302

A.2.8 High 10 Intra profile ................................................................................................................................. 302

A.2.9 High 4:2:2 Intra profile ............................................................................................................................. 303

A.2.10 High 4:4:4 Intra profile ............................................................................................................................. 303

A.2.11 CAVLC 4:4:4 Intra profile ....................................................................................................................... 304

A.3 Levels ............................................................................................................................................................... 304

A.3.1 Level limits common to the Baseline, Constrained Baseline, Main, and Extended profiles .................... 304

A.3.2 Level limits common to the High, Progressive High, High 10, High 4:2:2, High 4:4:4 Predictive,

High 10 Intra, High 4:2:2 Intra, High 4:4:4 Intra, and CAVLC 4:4:4 Intra profiles ................................ 307

A.3.3 Profile-specific level limits ....................................................................................................................... 309

A.3.4 Effect of level limits on frame rate (informative) ..................................................................................... 314

A.3.5 Effect of level limits on maximum DPB size in units of frames (informative) ........................................ 317

Annex B (normative) Byte stream format .................................................................................................................... 319

B.1 Byte stream NAL unit syntax and semantics .................................................................................................... 319

B.1.1 Byte stream NAL unit syntax ................................................................................................................... 319

B.1.2 Byte stream NAL unit semantics .............................................................................................................. 319

B.2 Byte stream NAL unit decoding process .......................................................................................................... 320

B.3 Decoder byte-alignment recovery (informative) .............................................................................................. 320

Annex C (normative) Hypothetical reference decoder ............................................................................................... 322

C.1 Operation of coded picture buffer (CPB) ......................................................................................................... 326

C.1.1 Timing of bitstream arrival ....................................................................................................................... 326

C.1.2 Timing of coded picture removal ............................................................................................................. 327

C.2 Operation of the decoded picture buffer (DPB) ............................................................................................... 328

C.2.1 Decoding of gaps in frame_num and storage of "non-existing" frames ................................................... 329

C.2.2 Picture decoding and output ..................................................................................................................... 329

C.2.3 Removal of pictures from the DPB before possible insertion of the current picture ................................ 330

C.2.4 Current decoded picture marking and storage .......................................................................................... 331

C.3 Bitstream conformance .................................................................................................................................... 332

C.4 Decoder conformance ...................................................................................................................................... 334

C.4.1 Operation of the output order DPB........................................................................................................... 335

C.4.2 Decoding of gaps in frame_num and storage of "non-existing" pictures ................................................. 335

C.4.3 Picture decoding ....................................................................................................................................... 335

C.4.4 Removal of pictures from the DPB before possible insertion of the current picture ................................ 336

C.4.5 Current decoded picture marking and storage .......................................................................................... 337

Annex D (normative) Supplemental enhancement information ................................................................................ 341

D.1 SEI payload syntax ........................................................................................................................................... 342

D.1.1 Buffering period SEI message syntax ...................................................................................................... 344

D.1.2 Picture timing SEI message syntax .......................................................................................................... 344

D.1.3 Pan-scan rectangle SEI message syntax ................................................................................................... 345

D.1.4 Filler payload SEI message syntax ........................................................................................................... 346

D.1.5 User data registered by ITU-T Rec. T.35 SEI message syntax ................................................................ 346

D.1.6 User data unregistered SEI message syntax ............................................................................................. 346

D.1.7 Recovery point SEI message syntax ......................................................................................................... 346

D.1.8 Decoded reference picture marking repetition SEI message syntax ......................................................... 347

Provided by IHS under license with ISO

Licensee=Universita di Bologna/5930975001, User=wang, ge

Not for Resale, 12/25/2015 05:03:19 MST

No reproduction or networking permitted without license from IHS

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