AVFrameRateRange
An immutable type that represents a range of valid frame rates.
Declaration
class AVFrameRateRangeOverview
An AVFrameRateRange object is immutable.
An AVCaptureDevice.Format object wraps a CMFormatDescription and expresses a range of valid video frame rates as an array of AVFrameRateRange objects.
An AVCaptureDevice object uses AVCaptureDeviceFormat to describe the formats it supports and the currently-active format.