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

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Summary of VR World and Node Atom TypesC Summary};typedef struct QTVRTrackRefEntry QTVRTrackRefEntry;2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.392
Profile Atom GuidelinesNote Profile atoms are deprecated in the QuickTime file format. The information that follows isintended to document existing content containing profile atoms and should not be used for newdevelopment.This appendix introduces and defines some of the ways that profile information about a QuickTime movie filecan be summarized in a profile atom near the beginning of the file, so that software reading the file can easilydetermine some aspects of its features and complexity.The information in this appendix should not be seen as a replacement for, or even a functional overlap with,the definition of the file-type atom. The file-type atom expresses which specifications a file is compatible with:reading software should not attempt to play files unless they are compatible with one or more specificationsthe reader implements, and should not refuse to play a file if it is marked as so compatible. However, readingsoftware may use profiling information to issue warnings, request user decisions, and so on.Reading software should not present excessive warnings to the user in the absence of summarized features.Additionally, readers are encouraged to try to play content even though crucial profile information is missingor incomplete.Profiles may exist at the movie level or the track level. Track-level profiles summarize features of that trackonly. Movie-level profiles may summarize features across tracks or summarize features that are only relevantat the movie level (for example, the movie’s maximum bit rate).If the movie contains runtime variables that might affect a feature, such as the presence of alternate tracksthat would affect the movie bit-rate, the affected feature should either be absent or report the worst case (forexample, the highest bit-rate).If a feature value cannot be accurately represented (for example, the value is not an integer, but the field isformatted as an integer) then the value should be rounded up to the nearest representable value.About This AppendixThe technical content of this appendix begins with a discussion of the structure of the profile atom, whichholds an array of feature codes and values. Next is an enumeration of the currently included profile features,each described in a feature description section.2012-08-14 | © 2004, 2012 Apple Inc. All Rights Reserved.393
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QuickTime File FormatSpecification
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ContentsReference Movie Atom 120Ref
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ContentsSprite Track Property Atoms
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ContentsSome Useful Examples and Sc
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ContentsAudio Sample Rate for a Sam
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Figures, Tables, and ListingsFigure
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Figures, Tables, and ListingsFigure
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Figures, Tables, and ListingsTable
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Introduction to QuickTime File Form
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Overview of QTFFQuickTime movies ar
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Overview of QTFFAtomsAtom LayoutFig
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Overview of QTFFQT Atoms and Atom C
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Overview of QTFFQuickTime Movie Fil
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Movie AtomsOverview of Movie AtomsO
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Movie AtomsOverview of Movie AtomsN
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Movie AtomsOverview of Movie AtomsC
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Movie AtomsOverview of Movie AtomsF
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Movie AtomsOverview of Movie AtomsS
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Movie AtomsOverview of Movie AtomsF
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Movie AtomsOverview of Movie AtomsL
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Movie AtomsOverview of Movie AtomsA
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Movie AtomsTrack AtomsPrint to Vide
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Movie AtomsTrack AtomsNote Figure 2
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Movie AtomsTrack AtomsFigure 2-7 (p
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Movie AtomsTrack AtomsAlternate gro
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Movie AtomsTrack AtomsAlthough the
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Movie AtomsTrack AtomsFigure 2-10 (
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Movie AtomsTrack AtomsRegion sizeTh
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Movie AtomsTrack AtomsNote If the e
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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 Track M
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Media Data Atom TypesSprite Media A
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Media Data Atom TypesSprite Media A
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Media Data Atom TypesSprite Button
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Media Data Atom TypesSprite Media H
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Media Data Atom TypesSprite Media H
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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 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 ScenariosC
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Some Useful Examples and ScenariosP
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Some Useful Examples and ScenariosP
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Page 370 and 371: QuickTime Image File FormatNote The
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Page 374 and 375: Defining Media Data LayoutsUsing Qu
Page 376 and 377: Random AccessSeeking With a QuickTi
Page 378 and 379: Metadata HandlingDigital Audio File
Page 380 and 381: Metadata HandlingStill Image File F
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Page 394 and 395: Profile Atom GuidelinesProfile Atom
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Page 398 and 399: Profile Atom GuidelinesUniversal Fe
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Page 434 and 435: Document Revision HistoryDate2011-0
Page 436 and 437: GlossaryAAC Advanced Audio Coding (
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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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