AVFoundation iOS 11.0 Beta 3 to Beta 4 API Differences

AVSampleBufferAudioRenderer.h
Added AVSampleBufferAudioRendererWasFlushedAutomaticallyNotification
Added AVSampleBufferAudioRendererFlushTimeKey
AVVideoComposition.h
Modified +[AVVideoComposition videoCompositionWithPropertiesOfAsset:]
Declaration
From+ (nullable AVVideoComposition *)videoCompositionWithPropertiesOfAsset:(nonnull AVAsset *)asset
To+ (nonnull AVVideoComposition *)videoCompositionWithPropertiesOfAsset:(nonnull AVAsset *)asset

Modified +[AVMutableVideoComposition videoCompositionWithPropertiesOfAsset:]
Declaration
From+ (nullable AVMutableVideoComposition *)videoCompositionWithPropertiesOfAsset:(nonnull AVAsset *)asset
To+ (nonnull AVMutableVideoComposition *)videoCompositionWithPropertiesOfAsset:(nonnull AVAsset *)asset

AVVideoSettings.h
Added AVVideoTransferFunction_SMPTE_ST_2084_PQ
Added AVVideoTransferFunction_ITU_R_2100_HLG