AVPlayerItemOutput class is an abstract class that defines the common interface for moving samples from an asset to an
AVPlayer object. You do not create instances of this class directly but instead use one of the concrete subclasses that manage specific types of assets.
- iOS 6.0+
- macOS 10.8+
- tvOS 6.0+
This class provides basic methods for converting time values to the timebase of the item. It also provides an option to suppress rendering of the output associated with the specific instance of this class.