A GUID that identifies the playback session.
- iOS 4.3+
- macOS 10.7+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 6.0+
This value is used in HTTP requests.
The property corresponds to “cs-guid".
The value of this property is
nil if unknown.
This property is not compatible with Key-value observing.
Getting Playback-Related Log Events
The offset, in seconds, in the playlist where the last uninterrupted period of playback began.
The accumulated duration, in seconds, until the player item is ready to play.
The total number of times that downloading the segments took too long.