Jump To:
Leopard Reference Library: Audio
Apple's cross-platform QuickTime technology supports a wide range of audio compression and file formats including AAC, MP3, AIFF, and standard MIDI. QuickTime applications can use Apple's Core Audio technology for complete control of sound synthesis, processing, and playback of high-resolution audio, scalable to future audio formats.

View all QuickTime Reference Library.
Document Descriptions
On Off
Display

Sort by
Title
Sorted by
Resource Type
Sort by
Date
Using the Audio Extraction API in QuickTime 7 (HTML)
Learn how your application can extract audio from multiple sound tracks in a QuickTime movie.
Articles 2005-12-19
QuickTime Media Types and Media Handlers Guide (HTML) (PDF)
Describes video, sound, text, time code, and tween media handlers.
Guides 2006-01-10
QuickTime Music Architecture Guide (HTML) (PDF)
Explains how to enable synthesizing and playing of sounds and musical sequences.
Guides 2006-01-10
QuickTime Audio (HTML)
Explains how to enable recording and playback of various audio media.
Guides 2002-09-17
Slope/Intercept Audio (HTML)
Explains how to store floating point audio data in QuickTime files.
Guides 2002-09-17
Standard Sound Dialog Component (HTML)
Describes the QuickTime component that lets the user make audio parameter settings.
Guides 2002-09-17
MIDI File Format (HTML)
Describes the QuickTime implementation of the MIDI file standard.
Reference 2002-09-17
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
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
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
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
SillyFrequencyLevels (HTML) (DMG) (ZIP)
Demonstrates how to obtain audio frequency levels from a Movie using SetMovieAudioFrequencyMeteringNumBands and GetMovieAudioFrequencyLevels APIs.
Sample Code 2006-01-25
SimpleAudioExtraction (HTML) (DMG) (ZIP)
Demonstrates the QuickTime 7.0 Movie Audio Extraction APIs
Sample Code 2006-01-03
QTAudioExtractionPanel (HTML) (DMG) (ZIP)
Enhances the QTKitPlayer to add an Audio Channel Mapping and Extraction panel
Sample Code 2005-06-27
Audio Export - Encoding AAC Audio For MPEG-4 Export (HTML)
TN2237: The QT MPEG4 Exporter does not show all options for generating AAC, this TN discusses workarounds.
Technical Notes 2009-01-27
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
Creating Core Audio Format (.caf) Files (HTML)
QA1534: Describes how to use afconvert to create .caf files
Technical Q&As 2009-01-07
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
Technical Q&As 2008-11-05
QuickTime Audio - Retrieving the correct audio format bit depth value (HTML)
QA1477: Discusses how to retrieve accurate audio format bit depth.
Technical Q&As 2008-11-05
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
Technical Q&As 2007-08-29
Standard Audio - Parsing the kQTSCAudioPropertyID_CodecSpecificSettingsArray property (HTML)
QA1437: Discusses how to parse the kQTSCAudioPropertyID_CodecSpecificSettingsArray property returned from StdAudio. Also see Q&A 1390.
Technical Q&As 2006-11-30
Standard Audio - The CodecSpecificSettingsArray and MagicCookie properties (HTML)
QA1390: Discusses Core Audio AudioConverter configuration with StdAudio, specifically the CodecSpecificSettingsArray property.
Technical Q&As 2006-11-16
Standard Audio - Setting output ASBD returns badFormatErr (HTML)
QA1489: Discusses why badFormatErr may be returned from Standard Audio
Technical Q&As 2006-11-15
MovieAudioExtraction - Extracting all available audio samples (HTML)
QA1481: Describes how to correct for MovieAudioExtraction missing some audio samples at the end of audio files.
Technical Q&As 2006-07-18
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
Sound Manager Codec support in QuickTime 7 (HTML)
QA1448: Describes QuickTime 7 support for constant bitrate and variable bitrate Sound Manager codecs
Technical Q&As 2005-10-26
Playing QuickTime 3 Movie Sound Data (HTML) (日本語 HTML)
QTMTB50: Explains why a movie's sound data can continue to play longer than video data.
Technical Q&As 1998-11-09