Reference number
ISO/IEC 14496-12:2005(E)
©
ISO/IEC 2005
INTERNATIONAL
STANDARD
ISO/IEC
14496-12
Second edition
2005-04-01
Corrected version
2005-10-01
Information technology — Coding of
audio-visual objects —
Part 12:
ISO base media file format
Technologies de l'information — Codage des objets audiovisuels —
Partie 12: Format ISO de base pour les fichiers médias
ISO/IEC 14496-12:2005(E)
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ii
© ISO/IEC 2005 – All rights reserved
ISO/IEC 14496-12:2005(E)
© ISO/IEC 2005 – All rights reserved iii
Contents Page
Foreword............................................................................................................................................................ vi
Introduction ..................................................................................................................................................... viii
1 Scope ......................................................................................................................................................1
2 Normative references ............................................................................................................................1
3 Definitions ..............................................................................................................................................1
4 Object-structured File Organization ....................................................................................................3
4.1 File Structure..........................................................................................................................................3
4.2 Object Structure.....................................................................................................................................3
4.3 File Type Box..........................................................................................................................................4
4.3.1 Definition ................................................................................................................................................4
4.3.2 Syntax .....................................................................................................................................................5
4.3.3 Semantics ...............................................................................................................................................5
5
Design Considerations..........................................................................................................................5
5.1 Usage ......................................................................................................................................................5
5.1.1 Introduction ............................................................................................................................................5
5.1.2 Interchange.............................................................................................................................................5
5.1.3 Content Creation....................................................................................................................................6
5.1.4 Preparation for streaming.....................................................................................................................6
5.1.5 Local presentation .................................................................................................................................7
5.1.6
Streamed presentation ..........................................................................................................................7
5.2
Design principles ...................................................................................................................................7
6 ISO Base Media File organization ........................................................................................................8
6.1 Presentation structure ..........................................................................................................................8
6.1.1 File Structure..........................................................................................................................................8
6.1.2 Object Structure.....................................................................................................................................8
6.1.3 Meta Data and Media Data ....................................................................................................................8
6.1.4 Track Identifiers .....................................................................................................................................8
6.2 Metadata Structure (Objects)................................................................................................................9
6.2.1 Box ..........................................................................................................................................................9
6.2.2 Data Types and fields ............................................................................................................................9
6.2.3 Box Order .............................................................................................................................................10
7 Streaming Support...............................................................................................................................13
7.1 Handling of Streaming Protocols.......................................................................................................13
7.2 Protocol ‘hint’ tracks ...........................................................................................................................13
7.3 Hint Track Format ................................................................................................................................14
8 Box Definitions.....................................................................................................................................14
8.1 Movie Box .............................................................................................................................................14
8.2 Media Data Box ....................................................................................................................................15
8.3 Movie Header Box................................................................................................................................15
8.4 Track Box..............................................................................................................................................16
8.5 Track Header Box ................................................................................................................................17
8.6 Track Reference Box ...........................................................................................................................18
8.7 Media Box .............................................................................................................................................19
8.8 Media Header Box................................................................................................................................19
8.9 Handler Reference Box .......................................................................................................................20
8.10 Media Information Box ........................................................................................................................21
8.11 Media Information Header Boxes.......................................................................................................21
8.11.2 Video Media Header Box.....................................................................................................................21
ISO/IEC 14496-12:2005(E)
iv © ISO/IEC 2005 – All rights reserved
8.11.3
Sound Media Header Box................................................................................................................... 22
8.11.4 Hint Media Header Box ....................................................................................................................... 22
8.11.5 Null Media Header Box ....................................................................................................................... 22
8.12 Data Information Box.......................................................................................................................... 23
8.13 Data Reference Box ............................................................................................................................ 23
8.14 Sample Table Box ............................................................................................................................... 24
8.15 Time to Sample Boxes........................................................................................................................ 24
8.15.2 Decoding Time to Sample Box ......................................................................................................... 25
8.15.3 Composition Time to Sample Box..................................................................................................... 26
8.16 Sample Description Box..................................................................................................................... 27
8.17 Sample Size Boxes ............................................................................................................................. 29
8.17.2 Sample Size Box ................................................................................................................................. 30
8.17.3 Compact Sample Size Box ................................................................................................................. 30
8.18 Sample To Chunk Box ........................................................................................................................ 30
8.19 Chunk Offset Box................................................................................................................................ 31
8.20 Sync Sample Box ................................................................................................................................ 32
8.21 Shadow Sync Sample Box ................................................................................................................. 32
8.22 Degradation Priority Box.................................................................................................................... 33
8.23 Padding Bits Box ................................................................................................................................ 34
8.24 Free Space Box ................................................................................................................................... 34
8.25 Edit Box................................................................................................................................................ 35
8.26 Edit List Box ........................................................................................................................................ 35
8.27 User Data Box...................................................................................................................................... 36
8.28 Copyright Box...................................................................................................................................... 37
8.29 Movie Extends Box ............................................................................................................................. 37
8.30 Movie Extends Header Box ................................................................................................................ 37
8.31 Track Extends Box.............................................................................................................................. 38
8.32 Movie Fragment Box........................................................................................................................... 39
8.33 Movie Fragment Header Box.............................................................................................................. 39
8.34 Track Fragment Box ........................................................................................................................... 40
8.35 Track Fragment Header Box .............................................................................................................. 40
8.36 Track Fragment Run Box ................................................................................................................... 41
8.37 Movie Fragment Random Access Box.............................................................................................. 42
8.38 Track Fragment Random Access Box .............................................................................................. 43
8.39 Movie Fragment Random Access Offset Box .................................................................................. 44
8.40 AVC Extensions .................................................................................................................................. 44
8.40.2 Independent and Disposable Samples Box ..................................................................................... 44
8.40.3 Sample Groups.................................................................................................................................... 45
8.40.4 Random Access Recovery Points..................................................................................................... 48
8.41 Sample Scale Box ............................................................................................................................... 49
8.42 Sub-Sample Information Box............................................................................................................. 50
8.43 Progressive Download Information Box........................................................................................... 51
8.44 Metadata Support................................................................................................................................ 52
8.44.1 The Metadata Box ............................................................................................................................... 52
8.44.2 XML Boxes ........................................................................................................................................... 53
8.44.3 The Item Location Box........................................................................................................................ 53
8.44.4 Primary Item Box................................................................................................................................. 55
8.44.5 Item Protection Box ............................................................................................................................ 55
8.44.6 Item Information Box .......................................................................................................................... 56
8.44.7 URL Forms for meta boxes ................................................................................................................ 56
8.44.8 Static Metadata .................................................................................................................................... 57
8.45 Support for Protected Streams.......................................................................................................... 58
8.45.1 Protection Scheme Information Box................................................................................................. 59
8.45.2 Original Format Box............................................................................................................................ 59
8.45.3 IPMPInfoBox ........................................................................................................................................ 60
8.45.4 IPMP Control Box ................................................................................................................................ 60
8.45.5 Scheme Type Box ............................................................................................................................... 61
8.45.6 Scheme Information Box.................................................................................................................... 62
9 Extensibility ......................................................................................................................................... 62
ISO/IEC 14496-12:2005(E)
© ISO/IEC 2005 – All rights reserved v
9.1
Objects..................................................................................................................................................62
9.2 Storage formats ...................................................................................................................................63
9.3 Derived File formats ............................................................................................................................63
10 RTP and SRTP Hint Track Format......................................................................................................63
10.1 Introduction ..........................................................................................................................................63
10.2 Sample Description Format ................................................................................................................64
10.2.1 SRTP Process box ‘srpp‘:...................................................................................................................65
10.3 Sample Format .....................................................................................................................................66
10.3.1 Packet Entry format .............................................................................................................................66
10.3.2 Constructor format ..............................................................................................................................67
10.4 SDP Information...................................................................................................................................68
10.4.1 Movie SDP information .......................................................................................................................68
10.4.2 Track SDP Information ........................................................................................................................68
10.5 Statistical Information .........................................................................................................................69
Annex A (informative) Overview and Introduction.........................................................................................70
A.1 Section Overview .................................................................................................................................70
A.2 Core Concepts .....................................................................................................................................70
A.3 Physical structure of the media .........................................................................................................70
A.4 Temporal structure of the media........................................................................................................71
A.5 Interleave ..............................................................................................................................................71
A.6 Composition .........................................................................................................................................71
A.7 Random access....................................................................................................................................72
A.8 Fragmented movie files.......................................................................................................................72
Annex B (informative) Patent Statements.......................................................................................................74
Annex C (informative) Guidelines on deriving from this specification........................................................75
C.1 Introduction ..........................................................................................................................................75
C.2 General Principles ...............................................................................................................................75
C.3 Brand Identifiers ..................................................................................................................................75
C.3.1 Introduction ..........................................................................................................................................75
C.3.2 Usage of the Brand ..............................................................................................................................75
C.3.3 Introduction of a new brand ...............................................................................................................76
C.3.4 Player Guideline...................................................................................................................................76
C.3.5 Example ................................................................................................................................................76
C.4 Box layout and order...........................................................................................................................77
C.5 Storage of new media types ...............................................................................................................77
C.6 Use of Template fields.........................................................................................................................77
C.7 Construction of fragmented movies ..................................................................................................77
Annex D (informative) Registration Authority ................................................................................................79
D.1 Code points to be registered ..............................................................................................................79
D.2 Procedure for the request of an MPEG-4 registered identifier value .............................................79
D.3 Responsibilities of the Registration Authority .................................................................................80
D.4 Contact information for the Registration Authority .........................................................................80
D.5 Responsibilities of Parties Requesting a RID...................................................................................80
D.6 Appeal Procedure for Denied Applications ......................................................................................81
D.7 Registration Application Form ...........................................................................................................81
D.7.1 Contact Information of organization requesting a RID ....................................................................81
D.7.2 Request for a specific RID ..................................................................................................................81
D.7.3 Short description of RID that is in use and date system was implemented..................................82
D.7.4 Statement of an intention to apply the assigned RID ......................................................................82
D.7.5 Date of intended implementation of the RID .....................................................................................82
D.7.6 Authorized representative ..................................................................................................................82
D.7.7 For official use of the Registration Authority ...................................................................................83
Bibliography ......................................................................................................................................................84
