mediaCharacteristics

The media characteristics describing accessibility features and content properties of this option. Common values include AVMediaCharacteristicContainsOnlyForcedSubtitles, AVMediaCharacteristicTranscribesSpokenDialogForAccessibility, and AVMediaCharacteristicDescribesMusicAndSoundForAccessibility. May be empty if no characteristics apply.

var mediaCharacteristics: [AVMediaCharacteristic] { get }