kCGImagePropertyAPNGDelayTime
The number of seconds to wait before displaying the next image in an animated sequence.
Declaration
let kCGImagePropertyAPNGDelayTime: CFStringDiscussion
The value of this key is a CFNumber with a floating-point value. The value of this key is never less than 50 millseconds, and the system adjusts values less than that amount to 50 milliseconds, as needed. See kCGImagePropertyAPNGUnclampedDelayTime.