ISO/IEC 14496-12:2008
(Main)Information technology — Coding of audio-visual objects — Part 12: ISO base media file format
Information technology — Coding of audio-visual objects — Part 12: ISO base media file format
ISO/IEC 14496-12:2008 specifies the ISO base media file format, which is a general format forming the basis for a number of other more specific file formats. This format contains the timing, structure, and media information for timed sequences of media data, such as audio/visual presentations. ISO/IEC 14496-12:2008 is applicable to MPEG-4, but its technical content is identical to that of ISO/IEC 15444-12:2008, which is applicable to JPEG 2000.
Technologies de l'information — Codage des objets audiovisuels — Partie 12: Format ISO de base pour les fichiers médias
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INTERNATIONAL ISO/IEC
STANDARD 14496-12
Third edition
2008-10-15
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
Reference number
ISO/IEC 14496-12:2008(E)
©
ISO/IEC 2008
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ISO/IEC 14496-12:2008(E)
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ii © ISO/IEC 2008 – All rights reserved
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ISO/IEC 14496-12:2008(E)
Contents Page
Foreword .vii
Introduction.ix
1 Scope.1
2 Normative references.1
3 Definitions .2
3.1 Terms and definitions .2
3.2 Abbreviated terms.3
4 Object-structured File Organization.3
4.1 File Structure .3
4.2 Object Structure .3
4.3 File Type Box .4
5 Design Considerations .5
5.1 Usage.5
5.1.1 Introduction.5
5.1.2 Interchange .6
5.1.3 Content Creation .6
5.1.4 Preparation for streaming .7
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
6.3 Brand Identification.12
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 Structures.14
8.1 File Structure and general boxes.14
8.1.1 Media Data Box.14
8.1.2 Free Space Box.15
8.1.3 Progressive Download Information Box.15
8.2 Movie Structure .16
8.2.1 Movie Box.16
8.2.2 Movie Header Box .16
8.3 Track Structure .17
8.3.1 Track Box .17
8.3.2 Track Header Box.18
8.3.3 Track Reference Box.20
8.4 Track Media Structure.20
8.4.1 Media Box.20
8.4.2 Media Header Box .21
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ISO/IEC 14496-12:2008(E)
8.4.3 Handler Reference Box .22
8.4.4 Media Information Box .22
8.4.5 Media Information Header Boxes.23
8.5 Sample Tables.24
8.5.1 Sample Table Box.24
8.5.2 Sample Description Box .25
8.5.3 Degradation Priority Box .29
8.5.4 Sample Scale Box.30
8.6 Track Time Structures.31
8.6.1 Time to Sample Boxes .31
8.6.2 Sync Sample Box.34
8.6.3 Shadow Sync Sample Box.34
8.6.4 Independent and Disposable Samples Box .35
8.6.5 Edit Box .36
8.6.6 Edit List Box .37
8.7 Track Data Layout Structures.38
8.7.1 Data Information Box .38
8.7.2 Data Reference Box.38
8.7.3 Sample Size Boxes .39
8.7.4 Sample To Chunk Box.40
8.7.5 Chunk Offset Box.41
8.7.6 Padding Bits Box .42
8.7.7 Sub-Sample Information Box .42
8.8 Movie Fragments .43
8.8.1 Movie Extends Box.43
8.8.2 Movie Extends Header Box.44
8.8.3 Track Extends Box.44
8.8.4 Movie Fragment Box .45
8.8.5 Movie Fragment Header Box .45
8.8.6 Track Fragment Box .46
8.8.7 Track Fragment Header Box.46
8.8.8 Track Fragment Run Box .47
8.8.9 Movie Fragment Random Access Box .48
8.8.10 Track Fragment Random Access Box.49
8.8.11 Movie Fragment Random Access Offset Box.50
8.9 Sample Group Structures .50
8.9.1 Introduction.50
8.9.2 Sample to Group Box .50
8.9.3 Sample Group Description Box.51
8.9.4 Representation of group structures in Movie Fragments .53
8.10 User Data .53
8.10.1 User Data Box .53
8.10.2 Copyright Box .54
8.10.3 Track Selection Box .54
8.11 Metadata Support.56
8.11.1 The Meta box.56
8.11.2 XML Boxes.57
8.11.3 The Item Location Box .57
8.11.4 Primary Item Box .58
8.11.5 Item Protection Box.59
8.11.6 Item Information Box.59
8.11.7 Additional Metadata Container Box.61
8.11.8 Metabox Relation Box .61
8.11.9 URL Forms for meta boxes.62
8.11.10 Static Metadata.63
8.12 Support for Protected Streams .63
8.12.1 Protection Scheme Information Box.64
8.12.2 Original Format Box .65
8.12.3 IPMPInfoBox.65
8.12.4 IPMP Control Box.66
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ISO/IEC 14496-12:2008(E)
8.12.5 Scheme Type Box.67
8.12.6 Scheme Information Box .67
8.13 File Delivery Format Support .67
8.13.1 Introduction.67
8.13.2 FD Item Information Box.68
8.13.3 File Partition Box .68
8.13.4 FEC Reservoir Box.70
8.13.5 FD Session Group Box .70
8.13.6 Group ID to Name Box .71
9 Hint Track Formats.72
9.1 RTP and SRTP Hint Track Format .72
9.1.1 Introduction.72
9.1.2 Sample Description Format.72
9.1.3 Sample Format.74
9.1.4 SDP Information .77
9.1.5 Statistical Information.77
9.2 ALC/LCT and FLUTE Hint Track Format .78
9.2.1 Introduction.78
9.2.2 Design principles.79
9.2.3 Sample Description Format.80
9.2.4 Sample Format.81
10 Sample Groups .83
10.1 Random Access Recovery Points .83
10.2 Rate Share Groups.84
10.2.1 Introduction.84
10.2.2 Rate Share Sample Group Entry.85
10.2.3 Relationship between tracks.86
10.2.4 Bitrate allocation .87
11 Extensibility .87
11.1 Objects .87
11.2 Storage formats .88
11.3 Derived File formats.88
Annex A (informative) Overview and Introduction .89
A.1 Section Overview.89
A.2 Core Concepts .89
A.3 Physical structure of the media .89
A.4 Temporal structure of the media .90
A.5 Interleave.90
A.6 Composition.90
A.7 Random access .91
A.8 Fragmented movie files .91
Annex B (informative) Patent Statements .93
Annex C (informative) Guidelines on deriving from this specification .94
C.1 Introduction.94
C.2 General Principles.94
C.3 Brand Identifiers .94
C.3.1 Introduction.94
C.3.2 Usage of the Brand.94
C.3.3 Introduction of a new brand .95
C.3.4 Player Guideline .95
C.3.5 Authoring Guideline.95
C.3.6 Example.95
C.4 Box layout and order.96
C.5 Storage of new media types.96
C.6 Use of Template fields .96
C.7 Construction of fragmented movies.97
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ISO/IEC 14496-12:2008(E)
Annex D (informative) Registration Authority .98
D.1 Code points to be registered .98
D.2 Procedure for the request of an MPEG-4 registered identifier value .98
D.3 Responsibilities of the Registration Authority .99
D.4 Contact information for the Registration Authority .99
D.5 Responsibilities of Parties Requesting a RID.99
D.6 Appeal Procedure for Denied Applications .100
D.7 Registration Application Form .100
D.7.1 Contact Information of organization requesting a RID.100
D.7.2 Request for a specific RID .100
D.7.3 Short description of RID that is in use and date system was implemented.101
D.7.4 Statement of an intention to apply the assigned RID .101
D.7.5 Date of intended implementation of the RID.101
D.7.6 Authorized representative .101
D.7.7 For official use of the Registration Authority .101
Annex E (normative) File format brands.102
E.1 Introduction.
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