Returns a Boolean value that indicates whether video output is available for the specified item time.
- iOS 6.0+
- macOS 10.8+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
The item time to query. The time value is relative to the
AVPlayerobject with which the receiver is associated.
true if there is available video output that has not been previously acquired or
false if there is not.
This method returns
true if the video data at the specified time has not yet been acquired or is different from the video that was acquired previously. If you require multiple objects to acquire video output from the same
AVPlayer object, you should create separate
AVPlayer objects for each.