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Driving OpenGL Rendering Loops
(HTML)
QA1385: Using Core Video display links (CVDisplayLink) or Cocoa timers (NSTimer) to drive an OpenGL rendering loop
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Cocoa, Games, Graphics & Imaging |
2009-05-01
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AudioChannelLayout - What's the Audio Channel Order when the Layout has a Channel Bitmap?
(HTML)
QA1638: Explains the audio channel order when a channel layout is tagged as kAudioChannelLayoutTag_UseChannelBitmap.
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Audio, QuickTime |
2009-04-12
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QuickTime Media Optimization Properties
(HTML)
QA1579: Discusses the kQTMovieImporterPropertyID_AllowMediaOptimization and kQTMovieInstantiationPropertyID_AllowMediaOptimization properties.
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QuickTime |
2009-03-30
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Movie export with AAC or AMR audio formats
(HTML)
QA1347: This QA discusses use of the QuickTime AMR and AAC audio compressors on Macintosh and Windows
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QuickTime |
2009-03-16
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Audio Queue - Looping Compressed Audio
(HTML)
QA1636: Discusses the format information required to seamlessly loop compressed audio using Audio Queue.
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Audio |
2009-02-20
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Tips for searching Headers, APIs and ADC reference material.
(HTML)
QA1475: Presents a number of different ways to search for APIs and reference material on the system.
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Tools |
2009-02-13
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QuickTime Audio - Easy Frequency Level Metering with MovieAudio APIs
(HTML)
QA1459: Describes how to perform frequency band level metering using MovieAudio metering APIs.
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Audio, Carbon, Cocoa, QuickTime |
2009-01-29
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Creating Core Audio Format (.caf) Files
(HTML)
QA1534: Describes how to use afconvert to create .caf files
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Audio, QuickTime |
2009-01-07
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Core Animation properties and Reference Counting
(HTML)
QA1565: Describes a discrepancy between the property declarations in Core Animation and the actual behavior.
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Cocoa, Core Foundation, Games, Graphics & Imaging |
2008-11-24
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Video Digitizers - Adding Clean Aperture and Pixel Aspect Ratio Information
(HTML)
QA1512: Discusses the importance of adding 'pasp' and 'clap' image description extensions to the ImageDescription returned by a VDIG.
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QuickTime |
2008-11-20
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Xcode 3 Project Compatiblity
(HTML)
QA1572: Describes the minimum requirements for opening Project Builder or older Xcode projects in Xcode 3.
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Tools |
2008-11-12
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Opening a Web page using an HREF track in QuickTime Player
(HTML)
QA1621: Opening a Web page using an HREF track in QuickTime Player
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Internet & Web, QuickTime |
2008-11-05
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Playback of QuickTime movie audio through a multi-channel speaker system
(HTML)
QA1627: Specify a specific pair of channels for QuickTime audio movie playback through a multi-channel speaker system
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Audio, QuickTime |
2008-11-05
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QuickTime Audio - Retrieving the correct audio format bit depth value
(HTML)
QA1477: Discusses how to retrieve accurate audio format bit depth.
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Audio, QuickTime |
2008-11-05
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Animating the frame of a CALayer.
(HTML)
QA1620: Explains how the frame property of a layer interacts with animations.
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Cocoa, Games, Graphics & Imaging |
2008-10-24
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Allocating and sharing memory with user space from an I/O Kit driver
(HTML)
( )
QA1197: Describes the preferred technique for allocating and sharing buffers in an I/O Kit kernel driver.
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Darwin, Hardware & Drivers |
2008-10-13
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Generating a Non-Maskable Interrupt (NMI)
(HTML)
()
QA1264: Explains how to generate a non-maskable interrupt (NMI) on modern Macintosh systems.
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Audio, Darwin, Hardware & Drivers, Mac OS X Server, Networking, Printing, Tools |
2008-10-13
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QTKit Capture - Disabling specific audio channels when recording
(HTML)
QA1617: Describes how to disable specific audio channels when recording using QTKit Capture.
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Cocoa, QuickTime |
2008-10-13
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Using GLUT and OpenGL on Mac OS X
(HTML)
QA1613: States the required steps to add GLUT and OpenGL to an Xcode project.
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Graphics & Imaging |
2008-10-13
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Using the ExtAudioFileSeek and ExtAudioFileTell Functions
(HTML)
QA1609: Describes how to use sample rate correctly when working with audio file positions.
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Audio |
2008-09-29
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FSDeleteObject fails with fBsyErr, sometimes
(HTML)
QA1497: Why Spotlight indexing can cause file deletion to fail, and what to do about it.
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Carbon |
2008-09-24
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Programmatically causing restart, shutdown and/or logout
(HTML)
()
QA1134: Describes how to programmatically cause restart, shutdown, sleep or logout.
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Carbon, Cocoa, Core Foundation, Darwin, Hardware & Drivers, Mac OS X Server, Tools |
2008-09-24
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Retain Counts of io_object_t Objects in IOKit.framework
(HTML)
()
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
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Audio, Darwin, Games, Graphics & Imaging, Hardware & Drivers, Networking, Printing, User Experience |
2008-09-24
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IODeviceTree and the I/O Registry
(HTML)
()
QA1120: Describes the IODeviceTree plane in the Mac OS X I/O Registry.
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Audio, Darwin, Hardware & Drivers, Networking |
2008-09-18
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Disabling Processor Cores on a Multi-Core System
(HTML)
()
QA1141: Describes how to disable processor cores on a multi-core system for testing purposes.
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Audio, Carbon, Cocoa, Core Foundation, Darwin, Graphics & Imaging, Hardware & Drivers, Performance, Tools |
2008-09-16
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Mac OS X and root access
(HTML)
QA1013: Describes how to enable root access in Mac OS X.
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Darwin, Security |
2008-09-16
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QTKit Capture - Video Compression Options And Preview
(HTML)
QA1583: Describes how video compression options may influence the resolution of previewed video.
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Cocoa, QuickTime |
2008-09-16
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Determining if an application uses Objective-C Garbage Collection
(HTML)
QA1599: Shows how to determine if an application or executable is using Objective-C Garbage Collection.
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Cocoa |
2008-09-08
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Expanding Tilde-based paths
(HTML)
QA1549: Demonstrates how to resolve tilde-based relevant paths.
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Carbon, Cocoa, Core Foundation |
2008-09-08
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Multithreaded usage of the QCRenderer
(HTML)
QA1538: Describes an issue that may arise when using the QCRenderer in a multi-threaded application.
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Apple Applications, Graphics & Imaging |
2008-09-08
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Getting the pixel data from a CGImage object
(HTML)
QA1509: Describes how to access the pixel data of a CGImage object
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Carbon, Cocoa, Games, Graphics & Imaging |
2008-08-27
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The Default Output Audio Units
(HTML)
QA1577: Describes the Mac OS X output audio units and their purposes.
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Audio |
2008-08-21
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Releasing the iTunes Windows COM from Managed Code
(HTML)
QA1608: Describes how to properly release the iTunes Windows COM from managed code
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Apple Applications |
2008-08-21
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Is dlopen available on all versions of Mac OS X?
(HTML)
()
QA1180: Describes how to dynamically link to libraries and plug-ins, typically done with dlopen.
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Darwin, Open Source |
2008-08-19
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Tips on USB driver matching for Mac OS X
(HTML)
QA1076: Gives some tips on getting USB driver matching to work.
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Hardware & Drivers |
2008-08-14
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Adding metadata to a QuickTime movie using the QuickTime MetaData APIs
(HTML)
QA1515: Adding metadata to a QuickTime movie using the QuickTime MetaData APIs
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QuickTime |
2008-08-08
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Gathering all PostScript Printer Descriptions (PPDs)
(HTML)
QA1529: Describes a work around for an issue in PMCopyAvailablePPDs on Mac OS X 10.4 and below
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Carbon, Cocoa, Graphics & Imaging, Printing |
2008-08-08
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How to play a sequence of movies in a Web page
(HTML)
QA1593: How to have the QuickTime plug-in play a sequence of movies, one after the other, in a Web page
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QuickTime |
2008-08-08
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QuickTime for Windows returns bdNamErr (-37) error with long Windows file names
(HTML)
QA1413: Describes how QuickTime may return bdNamErr (-37) error on Windows if file name is > 63 characters
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QuickTime |
2008-08-08
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Registering and unregistering for sleep and wake notifications
(HTML)
QA1340: Explains how applications can register and unregister for sleep and wake notifications on Mac OS X.
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Carbon, Cocoa, Core Foundation, Darwin |
2008-08-08
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Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
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Carbon, Cocoa, Games, Graphics & Imaging, Performance, User Experience |
2008-08-08
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Using PPD constraints with Paper Sizes
(HTML)
QA1603: Describes the requirements for using PPD Constraints to constrain options against paper size.
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Printing |
2008-08-08
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Using QTPixelBufferContextCreate with NewMovieFromProperties
(HTML)
QA1443: Discusses using a QuickTime pixel buffer visual context and NewMovieFromProperties to output frames to pixel buffers.
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Carbon, Cocoa, Graphics & Imaging, QuickTime |
2008-08-08
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Video capture with multiple IIDC cameras
(HTML)
QA1365: Discusses factors which influence the number of IIDC cameras that can simultaniously be used for capture.
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Hardware & Drivers, QuickTime |
2008-08-08
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Calculating the static video frame rate of a QuickTime movie.
(HTML)
()
QA1262: Calculating the static video frame rate of a QuickTime movie.
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QuickTime |
2008-08-06
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Getting a Packet Trace
(HTML)
()
QA1176: Lists tools available for looking at the network packets on the wire.
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Carbon, Cocoa, Core Foundation, Darwin, Games, Hardware & Drivers, Internet & Web, Java, Mac OS X Server, Networking, Printing, QuickTime, Security |
2008-06-03
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Creating Apple TV Media Files Containing Dolby Digital Professional AC-3 Audio
(HTML)
QA1604: Discusses how to create media files containing AC-3 audio for Apple TV using Compressor and QTKit.
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QuickTime |
2008-05-19
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QTKit Capture - Disabling Audio Or Video When Capturing From a Muxed Device
(HTML)
QA1607: Describes the use of the setEnabled: method to disable audio or video capture from muxed devices.
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Cocoa, QuickTime |
2008-05-19
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How can I find out what non-RGB pixel formats a codec supports?
(HTML)
()
QA1249: Applications can find out if a codec supports non-RGB pixel formats.
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QuickTime |
2008-04-24
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Determining console user login status
(HTML)
QA1133: How to determine whether a user is logged in on the console, and be notified of changes.
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Carbon, Cocoa, Darwin |
2008-04-14
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How to get a native QuickTime movie object from the QuickTime ActiveX/COM control
(HTML)
QA1594: Describes how to get a native QuickTime movie object from the QuickTime ActiveX/COM control
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QuickTime |
2008-03-27
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Bonjour Printer Subtype for HTTP
(HTML)
QA1555: Describes how printer vendors can register their bonjour service such that Safari can see them.
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Apple Applications, Carbon, Cocoa, Core Foundation, Darwin, Enterprise IT, Networking, Open Source, Printing |
2008-03-25
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Drawing attributed strings that are both filled and stroked
(HTML)
QA1531: Describes how the value of NSStrokeWidthAttributeName indicates fill, stroke, or both, in attributed strings.
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Cocoa, Text & Fonts |
2008-03-25
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Supported KPIs
(HTML)
QA1575: Describes how to check whether a kernel function is part of a supported KPI.
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Darwin |
2008-03-25
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QTKit Capture - Extracting SMPTE Timecode information from a QTSampleBuffer
(HTML)
QA1600: Describes how to use the QTSampleBufferSMPTETimeAttribute with a sample buffer.
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Cocoa, QuickTime |
2008-03-17
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Sample Description Endianness
(HTML)
QA1598: Describes the endianness of the QuickTime Sample Description Structure and their extensions.
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QuickTime |
2008-03-17
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How to work around HIMovieViewCreate failing
(HTML)
QA1417: Describes how to work around HIMovieViewCreate failing to initialize the view in QuickTime 7
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Carbon, QuickTime, Tools |
2008-03-11
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Movie Import Components - MovieImportDataRef Invoked For File Import Operations
(HTML)
QA1596: Discusses how QuickTime 7.4+ invokes Movie Import Components when specifically importing from files.
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QuickTime |
2008-03-11
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QTKit Capture - Specifying Media Compression Settings
(HTML)
QA1586: Describes how to configure a file output object to save compressed captured media.
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Graphics & Imaging, QuickTime |
2008-03-11
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Suppressing the "unexpectedly quit" alert
(HTML)
QA1288: Describes how to suppress the "unexpectedly quit" alert.
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Carbon, Cocoa, Darwin |
2008-03-11
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Missing Results in Xcode Project Find Window
(HTML)
QA1580: A workaround for when a search that previously returned results generates no files found in Xcode
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Tools |
2008-03-06
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QTKit Capture - Setting DecompressedVideoOutput CVPixelBuffer Attributes
(HTML)
QA1582: Describes how to configure a DecompressedVideoOutput objects CVPixelBuffer attributes.
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QuickTime |
2008-03-06
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Common mistakes with delegation in Cocoa
(HTML)
QA1554: The two most common errors that lead to a delegate method not being received.
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Cocoa |
2008-02-27
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Disabling text completion in an NSTextField
(HTML)
QA1553: Shows how to implement a delegate method provided by NSControl to disable automatic text completion.
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Cocoa |
2008-02-27
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NSDate - Natural language date parsing in early Leopard releases
(HTML)
QA1581: Acknowledges a regression in +dateWithNaturalLanguageString: behavior of NSDate which is fixed as of 10.5.2.
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Cocoa |
2008-02-27
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Customizing Process Stack Size
(HTML)
QA1419: Describes methods for setting the stack size of a process and/or thread.
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Carbon, Cocoa, Darwin |
2008-02-20
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Re-enabling dragging from NSTableView to other applications
(HTML)
()
QA1220: Explains how to re-enable drag-and-drop from NSTableViews to other applications
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Cocoa, User Experience |
2008-02-08
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Connecting the Font Menu in Interface Builder 3
(HTML)
QA1571: How to connect and configure the Font/Format menus in Interface Builder 3.
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Cocoa, Text & Fonts, Tools, User Experience |
2008-01-21
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Enabling the application menu's "Preferences" menu item on Mac OS X
(HTML)
QA1552: Describes the two things you need to implement to enable the "Preferences" menu item on Mac OS X.
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Cocoa, User Experience |
2008-01-21
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QuickTime Audio - Rendering QuickTime Movie audio to a specific Audio Device
(HTML)
QA1578: Describes how to render Movie audio to a specific audio device.
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QuickTime |
2008-01-08
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AGL Changes for Mac OS X Leopard (v. 10.5)
(HTML)
QA1523: This Q&A describes the new and deprecated APIs for Apple OpenGL (AGL)
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Carbon, Games, Graphics & Imaging, Porting |
2008-01-04
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Kernel's MAC framework
(HTML)
QA1574: Cautions that the kernel's MAC framework is currently not support.
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Darwin |
2008-01-04
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Debugging Process Startup
(HTML)
QA1573: Describes techniques for debugging a process's startup code.
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Tools |
2007-12-21
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How do I get the hexadecimal value of an NSColor object?
(HTML)
QA1576: Describes how to convert an NSColor object to its Hexadecimal value.
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Cocoa, Graphics & Imaging, Internet & Web, Text & Fonts |
2007-12-19
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Why is my Ruby on Rails application with FastCGI generating "'load error /etc/irbrc" errors?
(HTML)
QA1494: Describes how to resolve an error encountered hosting Ruby on Rails applications on Mac OS X 10.5.
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Enterprise IT, Internet & Web, Mac OS X Server, Open Source, Scripting & Automation |
2007-11-28
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How can I get both Subversion (SVN) and CVS on Mac OS X 10.5 (Leopard)?
(HTML)
QA1492: Explains where to find Subversion and CVS for installation.
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Open Source, Tools |
2007-11-15
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Compiling X11 / OpenGL applications on Mac OS X v.10.5 Leopard
(HTML)
QA1567: Trying to compile X11 / OpenGL application on Mac OS X v.10.5 result on "ld: cycle in dylib re-exports with /usr/X11R6/lib/libGL.dylib""
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Enterprise IT, Graphics & Imaging, Open Source |
2007-10-30
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Descriptor Passing Problems
(HTML)
QA1541: Describes how to work around common problems with descriptor passing.
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Darwin, Networking |
2007-10-29
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Why isn't my ColorSync CMM recognized on Mac OS X 10.5?
(HTML)
QA1557: Discusses how to upgrade your ColorSync CMM to run on Mac OS X 10.5
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Graphics & Imaging |
2007-10-26
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Looping Audio Files with QuickTime for Windows
(HTML)
QA1559: How to Continuously Loop Audio Files with QuickTime for Windows
|
QuickTime |
2007-10-09
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Why isn't my QuickTime Component recognized by iMovie '08?
(HTML)
QA1545: Discusses why iMovie '08 may ignore 3rd party QuickTime Components.
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Apple Applications, QuickTime |
2007-10-03
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QuickTime Audio - Muting and GetMovieAudioFrequencyLevels
(HTML)
QA1556: Discusses the change made to the GetMovieAudioFrequencyLevels API with QuickTime 7.2.
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QuickTime |
2007-09-28
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QuickTime Visual Context - Setting the kQTVisualContextOutputColorSpaceKey Attribute
(HTML)
QA1550: Describes how to configure a QuickTime OpenGL Texture Visual Context with the kQTVisualContextOutputColorSpaceKey attribute.
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Graphics & Imaging, QuickTime |
2007-09-28
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Obtaining the localized application name in Cocoa
(HTML)
QA1544: Describes how to obtain several versions of the application name in Cocoa.
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Cocoa, Internationalization |
2007-09-21
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QuickTime Texture Visual Context - kQTVisualContextNotAllowedErr with non-accelerated graphics cards
(HTML)
QA1542: Discusses how to create a display mask and avoid a kQTVisualContextNotAllowedErr when using a non-accelerated graphics card.
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Graphics & Imaging, QuickTime |
2007-09-18
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Programatically retrieving field and frame information
(HTML)
QA1547: Discusses the use of the kICMImageDescriptionPropertyID_FieldInfo property to retrieve Field/Frame information.
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QuickTime |
2007-09-13
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Adding and removing a submenu from a menu in Cocoa
(HTML)
QA1420: Explains how to dynamically add and remove menus in a Cocoa application.
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Cocoa |
2007-09-10
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Don't forget to cancel your Bonjour resolve
(HTML)
QA1297: Explains why it's important to cancel a Bonjour resolve operation.
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Carbon, Cocoa, Networking |
2007-08-30
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How can I work with MPEG-2 media using QuickTime?
(HTML)
QA1540: How to work with MPEG-2 media using QuickTime.
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QuickTime |
2007-08-29
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How do I create a QuickTime movie from PCM audio samples in memory?
(HTML)
QA1539: How to create a QuickTime movie from PCM audio samples in memory
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Audio, QuickTime |
2007-08-29
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AudioConverter: How do I know when I am done?
(HTML)
QA1532: Describes how to correctly signal AudioConverter when a conversion is completed.
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Audio |
2007-08-23
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How to measure CG text
(HTML)
QA1051: Explains how to measure Core Graphics text.
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Carbon, Cocoa, Graphics & Imaging, Printing |
2007-08-02
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Capturing a real-time movie stream
(HTML)
QA1535: Capturing real-time movie streams
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QuickTime |
2007-07-30
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Where do QuickTime extension files reside on Windows systems?
(HTML)
QTW100: Describes where to locate QuickTime extension files on Windows systems.
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QuickTime |
2007-07-30
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CGBitmapContextCreate Supported Color Spaces
(HTML)
QA1037: Lists the color space and alpha info combinations currently supported by CGBitmapContextCreate.
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Carbon, Cocoa, Games, Graphics & Imaging |
2007-07-18
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Ensuring hardware accelerated rendering for your OpenGL application
(HTML)
QA1502: Using the NoRecovery pixel format attribute and how to check whether vertex and fragment processing is executed on the GPU or CPU
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Games, Graphics & Imaging |
2007-07-18
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How to handle kAudioUnitProperty_MaximumFramesPerSlice
(HTML)
QA1533: Illustrates how to use the kAudioUnitProperty_MaximumFramesPerSlice property
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Audio |
2007-07-16
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Synchronizing OpenGL rendering updates to the vertical refresh of the display
(HTML)
QA1521: How to avoid tearing by synchronizing your rendering to the display VBL
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Games, Graphics & Imaging, Performance |
2007-07-16
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Debugging a WebKit Plug-in in Xcode
(HTML)
QA1500: Directions for debugging a WebKit plug-in in Xcode.
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Apple Applications, Cocoa, Internet & Web, Tools, User Experience |
2007-06-05
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Unable to select input device in AU Lab
(HTML)
QA1526: AU Lab only supports physical device singletons.
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Audio |
2007-05-17
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