requestedTimeToleranceBefore
A maximum length of time before the requested time to allow image generation to occur.
Declaration
var requestedTimeToleranceBefore: CMTime { get set }Mentioned in
Discussion
The default value is positiveInfinity. Set the values of requestedTimeToleranceBefore and requestedTimeToleranceAfter to zero to request frame-accurate image generation; this may incur additional decoding delay.