Specifies the approximate rate at which the device runs through linear media. The value is an NSNumber interpreted as a QTCaptureDeviceAVCTransportControlsSpeed. This is one of the keys that comprise the NSDictionary that specifies the linear media playback mode and rate given by the QTCaptureDeviceAVCTransportControlsAttribute.
Available in Mac OS X v10.5 and later.
Declaration Syntax Version Information- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)