Instance Property


The frame rate of the track, in frames per second.


var nominalFrameRate: Float { get }


The nominal frame rate indicates the number of frames per second for tracks that carry a full frame per media sample. For field-based (interlaced) video tracks, the value of this property indicates the field rate, not the frame rate.

See Also

Retrieving Frame-Based Characteristics

var minFrameDuration: CMTime

The minimum duration of the track’s frames.

var requiresFrameReordering: Bool

A Boolean value that indicates whether samples in the track may have different values for their presentation and decode timestamps.