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Leopard Reference Library: Cocoa
The Cocoa API for QuickTime includes classes for use in Mac OS X applications that include multimedia such as video, sound, animation, graphics, text, and interactivity. QuickTime supports most major formats of images, video, and sound, including MPEG-4 video and AAC audio.

View all QuickTime Reference Library.
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QTCaptureDevice Class Reference (HTML) (PDF)
Describes an object that represents a connected physical media capture device, such as a camera or microphone.
Reference 2009-05-06
QTCaptureAudioPreviewOutput Class Reference (HTML) (PDF)
Describes an output destination used to preview audio being captured.
Reference 2009-04-08
QTCaptureDeviceInput Class Reference (HTML) (PDF)
Describes a wrapper for a QTCaptureDevice object.
Reference 2009-04-08
QTCaptureInput Class Reference (HTML) (PDF)
Describes an input source connection for a capture session object.
Reference 2009-04-08
QTCaptureView Class Reference (HTML) (PDF)
Describes a view that displays a video preview of a capture session.
Reference 2009-04-08
QTDataReference Class Reference (HTML) (PDF)
Describes the location of a QuickTime movie or other media data.
Reference 2009-04-08
QTCoreVideo202 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using OpenGL PBO and the Core Video pixel buffer pipeline.
Sample Code 2009-04-07
QTCoreVideo301 (HTML) (DMG) (ZIP)
Demonstrates adding of effects & filters to QuickTime Movies in realtime using GLSL shaders and the Core Video texture pipeline.
Sample Code 2009-04-07
QTCaptureOutput Class Reference (HTML) (PDF)
Describes the interface for connecting capture output destinations to a capture session object.
Reference 2009-03-04
QTCaptureVideoPreviewOutput Class Reference (HTML) (PDF)
Describes an object for previewing a video stream that is being captured.
Reference 2009-03-04
QTMedia Class Reference (HTML) (PDF)
Describes a QuickTime media object.
Reference 2009-03-04
QTTrack Class Reference (HTML) (PDF)
Describes a QuickTime movie track.
Reference 2009-03-04
QuickTime Audio - Easy Frequency Level Metering with MovieAudio APIs (HTML)
QA1459: Describes how to perform frequency band level metering using MovieAudio metering APIs.
Technical Q&As 2009-01-29
QTMovie Class Reference (HTML) (PDF)
Describes a QuickTime movie and movie controller.
Reference 2009-01-07
QTKit Capture - Disabling specific audio channels when recording (HTML)
QA1617: Describes how to disable specific audio channels when recording using QTKit Capture.
Technical Q&As 2008-10-13
QTKit Capture - Video Compression Options And Preview (HTML)
QA1583: Describes how video compression options may influence the resolution of previewed video.
Technical Q&As 2008-09-16
Using QTPixelBufferContextCreate with NewMovieFromProperties (HTML)
QA1443: Discusses using a QuickTime pixel buffer visual context and NewMovieFromProperties to output frames to pixel buffers.
Technical Q&As 2008-08-08
Movie Overlay (HTML) (DMG) (ZIP)
Shows how to overlay text & graphics and perform animation on an QTMovieView through a floating overlay window.
Sample Code 2008-07-25
QTCoreVideo102 (HTML) (DMG) (ZIP)
An application demonstrating the use of QTKit, CoreVdeo, and OpenGL.
Sample Code 2008-06-06
QTCoreVideo103 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using OpenGL texture range and the Core Video pixel buffer pipeline.
Sample Code 2008-06-06
QTCoreVideo201 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using OpenGL FBO and the Core Video texture pipeline.
Sample Code 2008-06-06
MyMovieFilter (HTML) (DMG) (ZIP)
How to play a movie into a layer-backed QTMovieView and apply a Core Image filter while the movie plays.
Sample Code 2008-06-02
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.
Technical Q&As 2008-05-19
WhackedTV (HTML) (DMG) (ZIP)
A Cocoa version of the venerable HackTV sample code, demonstrating usage of the Sequence Grabber API's
Sample Code 2008-05-09
QTCoreVideo101 (HTML) (DMG) (ZIP)
Demonstrates (with very little code) how to render a QuickTime Movie using CoreVideo and OpenGL.
Sample Code 2008-04-24
QTKit Frequently Asked Questions (HTML)
TN2138: Provides answers to many frequently asked QTKit questions.
Technical Notes 2008-04-24
QTKit Capture - Extracting SMPTE Timecode information from a QTSampleBuffer (HTML)
QA1600: Describes how to use the QTSampleBufferSMPTETimeAttribute with a sample buffer.
Technical Q&As 2008-03-17
Managing QTCompressionOptions - An overview of the QTCompressionOptionsWindow sample (HTML)
TN2219: Introductory overview of the QTCompressionOptionsWindow sample demonstrating one way to manage QTCompressionOptions objects.
Technical Notes 2008-03-11
QTCompressionOptionsWindow (HTML) (DMG) (ZIP)
Demonstrates how easy it is to manage QTCompressionOptions instances with a user interface.
Sample Code 2008-02-22
QTAudioContextInsert (HTML) (DMG) (ZIP)
Demonstrates use of Audio Context Insert APIs to perform custom processing on QuickTime's audio stream.
Sample Code 2008-01-21
StillMotion (HTML) (DMG) (ZIP)
Demonstrates how to use the QTKit Capture APIs to build a simple application that creates stop motion animations.
Sample Code 2007-11-14
QTKit Capture Programming Guide (HTML) (PDF)
Describes how to capture media and output it QuickTime movies.
Guides 2007-10-31
QTKit Framework Reference (HTML) (PDF)
Describes the interfaces for working with QuickTime movies and media capture.
Reference 2007-10-31
QTKitThreadsExporter (HTML) (DMG) (ZIP)
Demonstrates QTKit threading APIs by performing concurrent exports on separate threads.
Sample Code 2007-10-08
QTKitTimeCode (HTML) (DMG) (ZIP)
Demonstrates how to use the QuickTime 32-bit Timecode Media Handler to Add and Remove Timecode Tracks.
Sample Code 2007-09-19
Thread-safe programming in QuickTime (HTML)
TN2125: Discusses how to use QuickTime from background threads for applications and component developers.
Technical Notes 2007-09-14
Fiendishthngs (HTML) (DMG) (ZIP)
Fiendishthngs lists all the the Components it finds on the system and lets you query them for information.
Sample Code 2007-09-13
QTKitPlayer (HTML) (DMG) (ZIP)
QTKit example code to open, edit, play, import and export QuickTime movies
Sample Code 2007-08-31
QTKit Reference Update (HTML) (PDF)
Summarizes the symbols added to the QuickTime Kit framework.
Release Notes 2007-07-18
QTMovieView Class Reference (HTML) (PDF)
Describes a view for playing a QuickTime movie.
Reference 2007-05-01
QTRecorder (HTML) (DMG) (ZIP)
Shows how to use the new QTKit capture classes introduced in 10.5.
Sample Code 2007-04-10
NSMovieView Class Reference (HTML) (PDF)
Deprecated - Describes a deprecated class replaced by QTKit.
Reference 2007-04-02
NSMovie Class Reference (HTML) (PDF)
Deprecated - Describes a deprecated class replaced by QTKit.
Reference 2007-03-26
QTExtractAndConvertToAIFF (HTML) (DMG) (ZIP)
Demonstrates using MovieAudioExtraction and an AudioConverter to extract and convert audio to a AIFF file.
Sample Code 2006-11-08
QTExtractAndConvertToMovieFile (HTML) (DMG) (ZIP)
Demonstrates using MovieAudioExtraction and an AudioConverter to extract and convert audio to a QuickTime movie file.
Sample Code 2006-11-08
Tagging Handle and Pointer Data References in QuickTime (HTML)
TN1195: The use of data reference extensions used by QuickTime to tag handle and pointer data references.
Technical Notes 2006-08-30
LiveVideoMixer3 (HTML) (DMG) (ZIP)
LiveVideoMixer3 is extended to support Video In via QTKit
Sample Code 2006-08-01
QTKitButtonTester (HTML) (DMG) (ZIP)
Shows how to use the QTMovieView methods for hiding and showing the buttons in the movie controller bar.
Sample Code 2006-08-01
QTKitThreadedExport (HTML) (DMG) (ZIP)
Shows how to export a QTMovie on a background thread.
Sample Code 2006-08-01
QTNoStepsDemo (HTML) (DMG) (ZIP)
Shows how to subclass QTMovieView to override its default behaviors.
Sample Code 2006-08-01
TrackFormatDemo (HTML) (DMG) (ZIP)
Shows how to get a human-readable, localized description of a track's format.
Sample Code 2006-08-01
WritableFileDemo (HTML) (DMG) (ZIP)
Shows how to create an empty, writable file associated with a QTMovie object.
Sample Code 2006-08-01
Using the QTKit Framework (HTML)
Learn how the QuickTime Kit works and how to use it in your application.
Articles 2006-06-19
QTKit Data Types Reference (HTML) (PDF)
Describes the data types and constants in the QTKit framework.
Reference 2006-05-23
ExtractMovieAudioToAIFF (HTML) (DMG) (ZIP)
Demonstrates how to extract audio from QuickTime Movies and write the data to an AIFF file.
Sample Code 2006-03-31
MovieAudioExtraction - Ensure a Movie is fully loaded before starting an extraction session (HTML)
QA1469: Describes the importance of making sure a Movie is fully loaded before extracting audio.
Technical Q&As 2006-03-29
SillyFrequencyLevels (HTML) (DMG) (ZIP)
Demonstrates how to obtain audio frequency levels from a Movie using SetMovieAudioFrequencyMeteringNumBands and GetMovieAudioFrequencyLevels APIs.
Sample Code 2006-01-25
QTKitMovieShuffler (HTML) (DMG) (ZIP)
Demonstrates a simple QTKit movie player application.
Sample Code 2006-01-03
ThreadsExportMovie (HTML) (DMG) (ZIP)
Demonstrates movie exporting using the QuickTime movie export component on separate threads of a Cocoa application.
Sample Code 2006-01-03
QuickTime Kit Programming Guide (HTML) (PDF)
Provides a tutorial on how to build and extend a QTKitPlayer application using the QuickTime Kit framework in Cocoa.
Guides 2005-11-09
QTQuartzPlayer (HTML) (DMG) (ZIP)
QTQuartzPlayer demonstrates how to render QuickTime Movies and live video with OpenGL and CoreVideo.
Sample Code 2005-10-04
QuickTime Overview (HTML) (PDF)
Introduces the main concepts and services of QuickTime.
Guides 2005-08-11
VideoViewer (HTML) (DMG) (ZIP)
Simple example of video rendering using QuickTime visual contexts, OpenGL, Core Video and Core Image.
Sample Code 2005-08-01
ThreadsExporter (HTML) (DMG) (ZIP)
Demonstrates importing and exporting still images in different formats on separate threads.
Sample Code 2005-07-26
BackgroundExporter (HTML) (DMG) (ZIP)
Demonstrates techniques which can be used to export QuickTime movies in a separate export process.
Sample Code 2005-07-22
QTCoreImage101 (HTML) (DMG) (ZIP)
Demonstrates how to render a QuickTime Movie using Core Image filters and the new video pipeline.
Sample Code 2005-07-19
QTAudioExtractionPanel (HTML) (DMG) (ZIP)
Enhances the QTKitPlayer to add an Audio Channel Mapping and Extraction panel
Sample Code 2005-06-27
Movies - Saving movie playback hints (HTML)
QA1366: Explains how to save and load media play hints from Movie files.
Technical Q&As 2004-09-14
Graphics Exporters - Creating 16-bit-per-channel image files (HTML)
QA1354: Discusses how to use QuickTime Graphics Exporters to create 16-bit-per-channel image files.
Technical Q&As 2004-06-03
QTEffectsDialog - Cocoa (HTML) (DMG) (ZIP)
Shows how to display the standard QuickTime effects parameters dialog in a Cocoa application.
Sample Code 2003-09-04
OpenGLCompositorLab (HTML) (DMG) (ZIP)
Demonstrates using OpenGL to composite multiple sources in hardware. Requires NVIDIA GeForce 4 Ti hardware.
Sample Code 2003-04-21
Cocoa - SGDataProc (HTML) (DMG) (ZIP)
Uses a Sequence Grabber data function and an NSQuickDrawView to simulate a preview operation for captured video.
Sample Code 2003-01-14
CocoaVideoFrameToGWorld (HTML) (DMG) (ZIP)
Demonstrates how to draw each frame of a QuickTime movie into a Cocoa NSQuickDrawView.
Sample Code 2003-01-14
CocoaVideoFrameToNSImage (HTML) (DMG) (ZIP)
Demonstrates how to create an NSImage for each frame of a QuickTime movie.
Sample Code 2003-01-14
ImagesToQTMovie (HTML) (DMG) (ZIP)
Creates a QuickTime movie from the images of any connected camera.
Sample Code 2003-01-14
QTGraphicsImport (HTML) (DMG) (ZIP)
Demonstrates how to use the QuickTime Graphics Importer to draw an image into a NSWindow using a NSQuickDrawView.
Sample Code 2003-01-14
QTtoCG (HTML) (DMG) (ZIP)
Shows how to create a CGImageRef with the proper ColorSync profile from a QuickTime image on disk.
Sample Code 2003-01-14
SimpleCocoaJavaMovie (HTML) (DMG) (ZIP)
Deprecated - A simple movie player showing how to use the NSMovieView and NSMovie Cocoa Java classes.
Sample Code 2003-01-14
SimpleCocoaMovie (HTML) (DMG) (ZIP)
Shows how to use the NSMovieView and NSMovie Cocoa AppKit classes.
Sample Code 2003-01-14
SimpleCocoaMovieQT (HTML) (DMG) (ZIP)
A simple movie player showing how to use the NSMovieView and NSMovie Cocoa Objective-C classes.
Sample Code 2003-01-14
Video (HTML) (PDF)
Explains how to use QuickTime movies in Cocoa.
Guides 2002-11-12