AVFoundation macOS 10.14 to 10.15 API Differences

	Declaration
From	@property (assign) id<AVAudioPlayerDelegate> delegate
To	@property (weak) id<AVAudioPlayerDelegate> delegate

	Declaration
From	@property (assign) id<AVAudioRecorderDelegate> delegate
To	@property (weak) id<AVAudioRecorderDelegate> delegate

	Availability	Replacement
From	Available	none
To	Deprecated	estimateMaximumDurationWithCompletionHandler

	Availability	Replacement
From	Available	none
To	Deprecated	estimateOutputFileLengthWithCompletionHandler

	Availability	Deprecation Message
From	Available	none
To	Deprecated	Use AVCaptureDeviceDiscoverySession instead.

	Availability	Deprecation Message
From	Available	none
To	Deprecated	Use AVCaptureDeviceDiscoverySession instead.

	Availability	Deprecation Message
From	Available	none
To	Deprecated	Use AVCapturePhotoOutput instead.

	Declaration
From	@property (nonatomic) AVPlayerActionAtItemEnd actionAtItemEnd
To	@property AVPlayerActionAtItemEnd actionAtItemEnd

	Declaration
From	@property (nonatomic) float volume
To	@property float volume

	Declaration
From	@property (nonatomic, getter=isMuted) BOOL muted
To	@property (getter=isMuted) BOOL muted

	Declaration
From	@property (nonatomic) BOOL appliesMediaSelectionCriteriaAutomatically
To	@property BOOL appliesMediaSelectionCriteriaAutomatically

	Declaration
From	@property (nonatomic, copy) NSString *audioOutputDeviceUniqueID
To	@property (copy) NSString *audioOutputDeviceUniqueID

	Declaration
From	@property (nonatomic) BOOL allowsExternalPlayback
To	@property BOOL allowsExternalPlayback

	Declaration
From	@property (nonatomic, getter=isClosedCaptionDisplayEnabled) BOOL closedCaptionDisplayEnabled
To	@property (getter=isClosedCaptionDisplayEnabled) BOOL closedCaptionDisplayEnabled

	Declaration
From	@property (nonatomic, readonly) AVPlayerItemStatus status
To	@property (readonly) AVPlayerItemStatus status

	Declaration
From	@property (nonatomic, readonly) NSError *error
To	@property (readonly) NSError *error

	Declaration
From	@property (nonatomic, readonly) NSArray<AVPlayerItemTrack *> *tracks
To	@property (readonly) NSArray<AVPlayerItemTrack *> *tracks

	Declaration
From	@property (nonatomic, readonly) CMTime duration
To	@property (readonly) CMTime duration

	Declaration
From	@property (nonatomic, readonly) CGSize presentationSize
To	@property (readonly) CGSize presentationSize

	Availability	Deprecation Message
From	Available	none
To	Deprecated	Use AVPlayerItemMetadataOutput to obtain timed metadata

	Declaration
From	@property (nonatomic, readonly) BOOL canPlayFastForward
To	@property (readonly) BOOL canPlayFastForward

	Declaration
From	@property (nonatomic, readonly) BOOL canPlaySlowForward
To	@property (readonly) BOOL canPlaySlowForward

	Declaration
From	@property (nonatomic, readonly) BOOL canPlayReverse
To	@property (readonly) BOOL canPlayReverse

	Declaration
From	@property (nonatomic, readonly) BOOL canPlaySlowReverse
To	@property (readonly) BOOL canPlaySlowReverse

	Declaration
From	@property (nonatomic, readonly) BOOL canPlayFastReverse
To	@property (readonly) BOOL canPlayFastReverse

	Declaration
From	@property (nonatomic, readonly) BOOL canStepForward
To	@property (readonly) BOOL canStepForward

	Declaration
From	@property (nonatomic, readonly) BOOL canStepBackward
To	@property (readonly) BOOL canStepBackward

	Declaration
From	@property (nonatomic) CMTime forwardPlaybackEndTime
To	@property CMTime forwardPlaybackEndTime

	Declaration
From	@property (nonatomic) CMTime reversePlaybackEndTime
To	@property CMTime reversePlaybackEndTime

	Declaration
From	@property (nonatomic, readonly) NSArray<NSValue *> *seekableTimeRanges
To	@property (readonly) NSArray<NSValue *> *seekableTimeRanges

	Declaration
From	@property (nonatomic) BOOL seekingWaitsForVideoCompositionRendering
To	@property BOOL seekingWaitsForVideoCompositionRendering

	Declaration
From	@property (nonatomic, copy) NSArray<AVTextStyleRule *> *textStyleRules
To	@property (copy) NSArray<AVTextStyleRule *> *textStyleRules

	Declaration
From	@property (nonatomic, copy) AVVideoApertureMode videoApertureMode
To	@property (copy) AVVideoApertureMode videoApertureMode

	Declaration
From	@property (nonatomic, copy) AVAudioTimePitchAlgorithm audioTimePitchAlgorithm
To	@property (copy) AVAudioTimePitchAlgorithm audioTimePitchAlgorithm

	Declaration
From	@property (nonatomic, readonly) NSArray<NSValue *> *loadedTimeRanges
To	@property (readonly) NSArray<NSValue *> *loadedTimeRanges

	Declaration
From	@property (nonatomic, readonly, getter=isPlaybackLikelyToKeepUp) BOOL playbackLikelyToKeepUp
To	@property (readonly, getter=isPlaybackLikelyToKeepUp) BOOL playbackLikelyToKeepUp

	Declaration
From	@property (nonatomic, readonly, getter=isPlaybackBufferFull) BOOL playbackBufferFull
To	@property (readonly, getter=isPlaybackBufferFull) BOOL playbackBufferFull

	Declaration
From	@property (nonatomic, readonly, getter=isPlaybackBufferEmpty) BOOL playbackBufferEmpty
To	@property (readonly, getter=isPlaybackBufferEmpty) BOOL playbackBufferEmpty

	Declaration
From	@property (nonatomic, assign) BOOL canUseNetworkResourcesForLiveStreamingWhilePaused
To	@property (assign) BOOL canUseNetworkResourcesForLiveStreamingWhilePaused

	Declaration
From	@property (nonatomic) NSTimeInterval preferredForwardBufferDuration
To	@property NSTimeInterval preferredForwardBufferDuration

	Declaration
From	@property (nonatomic) double preferredPeakBitRate
To	@property double preferredPeakBitRate

	Declaration
From	@property (nonatomic) CGSize preferredMaximumResolution
To	@property CGSize preferredMaximumResolution

	Declaration
From	@property (nonatomic, readonly, assign) id<AVPlayerItemOutputPullDelegate> delegate
To	@property (readonly, weak) id<AVPlayerItemOutputPullDelegate> delegate