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Leopard Technical Q&As: QuickTime
Movie creation is accomplished programmatically by synthesizing or capturing data and adding media samples to tracks. Audio and video can be captured in real time using sequence grabber components.

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QuickTime Media Optimization Properties (HTML)
QA1579: Discusses the kQTMovieImporterPropertyID_AllowMediaOptimization and kQTMovieInstantiationPropertyID_AllowMediaOptimization properties.
2009-03-30
QTKit Capture - Video Compression Options And Preview (HTML)
QA1583: Describes how video compression options may influence the resolution of previewed video.
2008-09-16
Video capture with multiple IIDC cameras (HTML)
QA1365: Discusses factors which influence the number of IIDC cameras that can simultaniously be used for capture.
2008-08-08
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.
2008-05-19
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 - Specifying Media Compression Settings (HTML)
QA1586: Describes how to configure a file output object to save compressed captured media.
2008-03-11
Creating a Movie from Movie Data in Memory (HTML)
QA1341: Describes how to create a movie from movie data in memory.
2006-03-21
Movie Export From Procedures - Providing k2vuyPixelFormat data to MovieExportGetDataProc (HTML)
QA1465: Discusses adding the missing 'rowb' ImageDescription extension when using MakeImageDescriptionFromPixMap with a k2vuyPixelFormat GWorld for a procedures export.
2006-03-03
Sequence Grabber preallocates large file when recording (HTML)
QA1411: Describes how to prevent the Sequence Grabber from filling your entire disk when recording.
2006-02-06
Compression Sessions - Enabling muti-pass encoding (HTML)
QA1450: Describes how to enable multi-pass encoding when using ICM compression sessions.
2006-01-12
Compression Sessions - Temporal compression options (HTML)
QA1455: Discusses the temporal compression option as it relates to quality and other compression session options.
2006-01-12
Final Cut Pro - Preferred Video Media Time Scales and Sample Durations (HTML)
QA1447: Lists the preferred time scales/sample durations for media created for use with FCP.
2005-10-24
Movie Export - Always fill in the MovieExportGetDataParams dataSize field (HTML)
QA1304: Outlines the importance of correctly filling in the MovieExportGetDataParams dataSize field when exporting from procedures.
2005-02-25
Using language-tagged QuickTime UserData text APIs with CFStrings (HTML)
QA1410: Describes how to use language-tagged QuickTime UserData text APIs with CFStrings and TextEncodings.
2005-02-11
Sequence Grabber - Determining the capture resolution of an IIDC device (HTML)
QA1403: Discusses how to determine the resolution of a captured image from an IIDC device
2005-01-06
Sequence Grabber - How often should I call SGIdle? (HTML)
QA1349: This Q&A discusses how often SGIdle should be called when capturing using the Sequence Grabber.
2004-04-06
Sequence Grabber - Using the SGDataProc for Sound (HTML)
QA1348: This Q&A discusses how you can use a Sound SGChannel with the Sequence Grabber DataProc
2004-04-06
Sequence Grabber - Ensuring the SG TimeBase is being driven by the Sound Clock. (HTML)
QA1314: Ensuring the Sequence Grabber TimeBase is being driven by the Sound Clock when recording audio and video.
2003-10-24
Sequence Grabber - Setting the sound channel play through state (HTML)
QA1303: Setting the Sound play though state when previewing and recording a sound channel with the Sequence Grabber.
2003-09-23
Sequence Grabber - How do I save user settings as CFPreferences? (HTML)
QA1286: Saving UserData settings returned from the Sequence Grabber as CFPreferences.
2003-09-04
Sequence Grabber Source, Video, and Channel Bounds (HTML) (日本語 HTML)
QA1250: Explains the QuickTime Sequence Grabber's relationship between the Source, Video, and Channel Bounds when capturing video.
2003-07-16
Setting Sequence Grabber Sound Input Device Driver Parameters (HTML) (日本語 HTML)
QA1204: Setting sound input device driver parameters for QuickTime sequence grabber audio channels.
2002-10-25
Unwanted Audio with DV Capture (HTML) (日本語 HTML)
QA1105: Explains why audio is captured from a DV source even though you may not want to.
2002-01-14
Keyframes and AddMediaSample (HTML)
QTMCC20: Describes setting flags correctly for AddMediaSample to mark keyframes and difference frames.
2000-12-01
Preview image quality of DV capture (HTML)
QTMCC12: Describes how to get full resolution preview image quality when capturing DV.
2000-10-25
SGSetSettings unexpected results (HTML)
QTMTB55: Explains why subsequent calls to the SGSetSettings can fail after the first call to SGSetSettings completed successfully.
1999-10-11
MPEG Compression in QuickTime (HTML)
QTICM16: Describes extracting information from an MPEG movie file and placing it in a specific MPEG track.
1995-08-01