pub unsafe static kVTCompressionPropertyKey_MaxKeyFrameIntervalDuration: &'static CFStringAvailable on crate feature
VTCompressionProperties only.Expand description
The maximum duration from one key frame to the next in seconds.
Zero by default, which means no limit. This property is particularly useful when the frame rate is variable. See kVTCompressionPropertyKey_MaxKeyFrameInterval for more discussion of key frames.
This key can be set in conjunction with kVTCompressionPropertyKey_MaxKeyFrameInterval, and both limits will be enforced - requiring a keyframe every X frames or every Y seconds, whichever comes first.
See also Apple’s documentation