kCGImagePropertyGIFUnclampedDelayTime
The number of seconds to wait before displaying the next image in an animated sequence.
Declaration
let kCGImagePropertyGIFUnclampedDelayTime: CFStringDiscussion
This value may be 0 milliseconds or higher. Unlike the kCGImagePropertyGIFDelayTime property, this value is not clamped at the low end of the range.