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  "title" : "Offline Audio Unit Properties"
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# Offline Audio Unit Properties

Properties for audio units that perform offline processing—that is, processing in a nonplayback, nonrealtime mode.

## Topics

### Constants

[`var kAudioUnitOfflineProperty_InputSize: AudioUnitPropertyID`](/documentation/AudioToolbox/kAudioUnitOfflineProperty_InputSize)

[`var kAudioUnitOfflineProperty_OutputSize: AudioUnitPropertyID`](/documentation/AudioToolbox/kAudioUnitOfflineProperty_OutputSize)

[`var kAudioUnitOfflineProperty_PreflightName: AudioUnitPropertyID`](/documentation/AudioToolbox/kAudioUnitOfflineProperty_PreflightName)

[`var kAudioUnitOfflineProperty_PreflightRequirements: AudioUnitPropertyID`](/documentation/AudioToolbox/kAudioUnitOfflineProperty_PreflightRequirements)

[`var kAudioUnitOfflineProperty_StartOffset: AudioUnitPropertyID`](/documentation/AudioToolbox/kAudioUnitOfflineProperty_StartOffset)


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