AVFoundation iOS 11.0 Beta 3 to Beta 4 API Differences

AVSampleBufferAudioRenderer.h
AVVideoComposition.h
Declaration
From+ (nullable AVVideoComposition *)videoCompositionWithPropertiesOfAsset:(nonnull AVAsset *)asset
To+ (nonnull AVVideoComposition *)videoCompositionWithPropertiesOfAsset:(nonnull AVAsset *)asset

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

AVVideoSettings.h