Quicktime File Format (2012-08-14).pdf

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Figures, Tables, and ListingsTable A-1 A QuickTime image file containing JPEG-compressed data 371Profile Atom Guidelines 393Figure F-1 The layout of a profile atom 396Figure F-2 Layout of a typical feature 397Table F-1 Universal features 398Audio Priming - Handling Encoder Delay in AAC 421Figure G-1 AAC encoded audio 422Figure G-2 The layout of a sample group description atom 426Figure G-3 The layout of a sample-to-group atom 428Figure G-4 The layout of the table data format 4292012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.16
Introduction to QuickTime File Format SpecificationThe QuickTime File Format (QTFF) is designed to accommodate the many kinds of data that need to be storedin order to work with digital multimedia. The QTFF is an ideal format for the exchange of digital media betweendevices, applications, and operating systems, because it can be used to describe almost any media structure.The file format is object-oriented, consisting of a flexible collection of objects that is easily parsed and easilyexpanded. Unknown objects can simply be ignored or skipped, allowing considerable forward compatibilityas new object types are introduced.QuickTime itself provides a number of high-level functions that you can use to create and manipulate QuickTimefiles, without requiring you to understand the actual file format. These functions serve to insulate developersfrom the low-level details of operation. That said, not all kinds of QuickTime files can be created without theinformation presented here.Important The QuickTime File Format has been used as the basis of the MPEG-4 standard and the JPEG-2000standard, developed by the International Organization for Standardization (ISO). Although these file typeshave similar structures and contain many functionally identical elements, they are distinct file types.Warning Do not use this specification to interpret a file that conforms to a different specification,however similar.The QuickTime File Format Specification assumes that you are familiar with the basic concepts of digital videoand audio, as well as with programming QuickTime and the QuickTime API. Note that this version of thedocument supersedes all previous versions of the QuickTime File Format Specification .Organization of This DocumentThis document begins with an overview of QuickTime atoms, then presents the structure of the QuickTime fileformat in detail. This is followed by a series of code examples for manipulating a QuickTime file using theQuickTime API. Finally, a number of related topics are described in a series of appendixes. These include suchtopics as the handling of metadata when importing files into QuickTime, random access, and the QuickTimeImage File format.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.17
Page 1 and 2: QuickTime File FormatSpecification
Page 4 and 5: ContentsReference Movie Atom 120Ref
Page 6 and 7: ContentsSprite Track Property Atoms
Page 8 and 9: ContentsSome Useful Examples and Sc
Page 10 and 11: ContentsAudio Sample Rate for a Sam
Page 12 and 13: Figures, Tables, and ListingsFigure
Page 14 and 15: Figures, Tables, and ListingsFigure
Page 18 and 19: Introduction to QuickTime File Form
Page 20 and 21: Overview of QTFFQuickTime movies ar
Page 22 and 23: Overview of QTFFAtomsAtom LayoutFig
Page 24 and 25: Overview of QTFFQT Atoms and Atom C
Page 30 and 31: Overview of QTFFQuickTime Movie Fil
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Movie AtomsTrack AtomsFigure 2-12 (
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Movie AtomsTrack AtomsRegion sizeTh
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Movie AtomsTrack AtomsTrack Input M
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Movie AtomsTrack AtomsInput typeA 3
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Movie AtomsMedia AtomsMedia atoms c
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Movie AtomsMedia AtomsTime scaleA t
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Movie AtomsMedia AtomsHandler Refer
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Movie AtomsMedia AtomsNote “Using
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Movie AtomsMedia AtomsOpcolorThree
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Movie AtomsMedia AtomsMedia types t
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Movie AtomsMedia AtomsFlagsA 3-byte
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Movie AtomsMedia AtomsData referenc
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Movie AtomsSample AtomsSamples are
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Movie AtomsSample AtomsFigure 2-33
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Movie AtomsSample AtomsThe sample d
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Movie AtomsSample AtomsSizeA 32-bit
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Movie AtomsSample AtomsNote At the
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Movie AtomsSample AtomsSizeA 32-bit
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Movie AtomsSample AtomsVersionA 1-b
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Movie AtomsSample AtomsNote The sam
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Movie AtomsSample AtomsSample depen
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Movie AtomsCompressed Movie Resourc
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Movie AtomsReference MoviesApplicat
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Movie AtomsReference MoviesData ref
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Movie AtomsReference MoviesCPU Spee
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Movie AtomsReference MoviesFlagsA 3
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MetadataThis chapter describes how
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MetadataMetadata StructureFigure 3-
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MetadataExtensibilityTypeA 32-bit u
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MetadataLanguage List AtomField Siz
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MetadataMetadata Item Keys AtomThis
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MetadataMetadata Item AtomFigure 3-
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MetadataLocale IndicatorValueotherw
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MetadataData Atom StructureNameAn a
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MetadataLocation MetadataLocation M
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MetadataQuickTime Metadata KeysKeyK
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Media Data Atom TypesQuickTime uses
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Media Data Atom TypesVideo MediaCom
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Media Data Atom TypesVideo MediaCol
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Media Data Atom TypesVideo MediaDes
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Media Data Atom TypesVideo MediaThe
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Media Data Atom TypesVideo MediaSch
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Media Data Atom TypesVideo MediaTab
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Media Data Atom TypesVideo MediaNot
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Media Data Atom TypesSound MediaSou
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Media Data Atom TypesSound MediaThe
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Media Data Atom TypesSound Mediaaud
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Media Data Atom TypesSound MediaTyp
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Media Data Atom TypesSound MediaThe
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Media Data Atom TypesTimecode Media
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Media Data Atom TypesTimecode Media
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Media Data Atom TypesText MediaDisp
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Media Data Atom TypesText MediaFore
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Media Data Atom TypesClosed Caption
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Media Data Atom TypesSubtitle Media
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Media Data Atom TypesMusic Media●
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Media Data Atom TypesSprite MediaSp
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Media Data Atom TypesSprite Track P
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Media Data Atom TypesSprite Track M
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Media Data Atom TypesSprite Media A
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Media Data Atom TypesWired Action G
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Media Data Atom TypesFlash MediakAc
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Media Data Atom TypesTween MediaTwe
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Media Data Atom TypesTween Media●
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Media Data Atom TypesTween MediakTw
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Media Data Atom TypesTween MediaTwe
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Media Data Atom TypesTrack Referenc
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Media Data Atom TypesStreaming Medi
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Media Data Atom TypesHint Media●
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Media Data Atom TypesHint MediaMovi
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Media Data Atom TypesHint Sample Da
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Media Data Atom TypesPacketization
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Media Data Atom TypesVR Media} QTVR
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Media Data Atom TypesVR MediaUInt32
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Media Data Atom TypesVR Mediareserv
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Media Data Atom TypesCustom Cursor
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Media Data Atom TypesNode Informati
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Media Data Atom TypesQuickTime VR F
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Media Data Atom TypesQuickTime VR F
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Media Data Atom TypesQTVR TrackImpo
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Media Data Atom TypesPanorama Track
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Media Data Atom TypesCubic Panorama
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Media Data Atom TypesHot Spot Image
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Media Data Atom TypesObject TracksT
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Media Data Atom TypesObject Tracksd
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Media Data Atom TypesObject Tracksk
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Media Data Atom TypesObject Tracksk
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Media Data Atom TypesMovie MediaFor
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Media Data Atom TypesMovie MediaNot
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Media Data Atom TypesMovie MediakMo
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Basic Data TypesThis chapter descri
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Basic Data TypesLanguage Code Value
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Basic Data TypesCalendar Date and T
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Basic Data TypesRGB ColorsTable 5-3
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Some Useful Examples and ScenariosT
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Some Useful Examples and ScenariosO
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QuickTime Image File FormatNote The
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QuickTime Image File FormatRecommen
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Defining Media Data LayoutsUsing Qu
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Random AccessSeeking With a QuickTi
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Metadata HandlingDigital Audio File
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Metadata HandlingStill Image File F
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Summary of VR World and Node Atom T
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Profile Atom GuidelinesProfile Atom
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Profile Atom GuidelinesProfile Atom
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Profile Atom GuidelinesUniversal Fe
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Document Revision HistoryDate2011-0
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GlossaryAAC Advanced Audio Coding (
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Glossaryfile preview A thumbnail pi
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Glossarymedia’s data. The data ha
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GlossaryPCM Pulse-code modulation (
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Glossarytrack A Movie Toolbox data
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Apple Inc.© 2004, 2012 Apple Inc.A
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