VideoToolbox iOS 10.3 to 11.0 API Differences

VTBase.h
VTCompressionProperties.h
VTDecompressionProperties.h
VTDecompressionSession.h
VTSession.h
Declaration
FromOSStatus VTSessionSetProperty(VTSessionRef _Nonnull session, CFStringRef _Nonnull propertyKey, CFTypeRef _Nonnull propertyValue)
ToOSStatus VTSessionSetProperty(VTSessionRef _Nonnull session, CFStringRef _Nonnull propertyKey, CFTypeRef _Nullable propertyValue)

VTVideoEncoderList.h