This page lists new and recently changed Technical Q&As.

Items are listed in reverse chronological order by publication date. To see the list sorted by the type of revision, click Sort by Revision Type. Items published for the first time (First Version) will be at the top of the list, followed by items with new or changed content (Content Update), followed by items with small fixes, such as typos and format errors, but no significant content changes (Minor Change).

New and updated Technical Q&As are announced in the bi-weekly Apple Developer Connection News, available as an option to ADC members. See the Membership Overview page for details on joining.
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2009-02-20 Audio Queue - Looping Compressed Audio (HTML)
First Version
 First Version Audio
2009-04-12 AudioChannelLayout - What's the Audio Channel Order when the Layout has a Channel Bitmap? (HTML)
First Version
 First Version Audio, QuickTime
2009-01-07 Creating Core Audio Format (.caf) Files (HTML)
First Version
 First Version Audio, QuickTime
2009-05-01 Driving OpenGL Rendering Loops (HTML)
Corrected a typo.
 Minor Change Cocoa, Games, Graphics & Imaging
2009-03-16 Movie export with AAC or AMR audio formats (HTML)
Updated licensing requirements
 Content Update QuickTime
2009-01-29 QuickTime Audio - Easy Frequency Level Metering with MovieAudio APIs (HTML)
Editorial
 Minor Change Audio, Carbon, Cocoa, QuickTime
2009-03-30 QuickTime Media Optimization Properties (HTML)
Minor Change QuickTime
2009-02-13 Tips for searching Headers, APIs and ADC reference material. (HTML)
Editorial Update
 Minor Change Tools