kVTCompressionPropertyKey_MaxFrameDelayCount
The maximum number of frames that a compressor is allowed to hold before it must output a compressed frame.
Declaration
let kVTCompressionPropertyKey_MaxFrameDelayCount: CFStringDiscussion
This value limits the number of frames that may be held in the compression window. If the maximum frame delay count is M, then before the call to encode frame N returns, frame N-M must have been emitted. The default is kVTUnlimitedFrameDelayCount, which sets no limit on the compression window.