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kVTEncodeFrameOptionKey_ForceKeyFrame

Boolean value indicating whether the current frame is forced to be a key frame.

Declaration

let kVTEncodeFrameOptionKey_ForceKeyFrame: CFString

Discussion

This value is set in the frameProperties dictionary passed to VTCompressionSessionEncodeFrame(_:imageBuffer:presentationTimeStamp:duration:frameProperties:sourceFrameRefcon:infoFlagsOut:); it determines whether the current frame is forced to be a keyframe or not. Note that it may not be possible for the encoder to accommodate all requests.

See Also

Per-Frame Configuration