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Leopard Technical Q&As: 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 Technical Q&As.
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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.
 2009-01-29
QTKit Capture - Disabling specific audio channels when recording (HTML)
QA1617: Describes how to disable specific audio channels when recording using QTKit Capture.
 2008-10-13
QTKit Capture - Video Compression Options And Preview (HTML)
QA1583: Describes how video compression options may influence the resolution of previewed video.
 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.
 2008-08-08
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.
 2008-05-19
QTKit Capture - Extracting SMPTE Timecode information from a QTSampleBuffer (HTML)
QA1600: Describes how to use the QTSampleBufferSMPTETimeAttribute with a sample buffer.
 2008-03-17
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.
 2006-03-29
Movies - Saving movie playback hints (HTML)
QA1366: Explains how to save and load media play hints from Movie files.
 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.
 2004-06-03