AVAssetTrackTrackAssociationsDidChange
A notification the system posts when the track associations for an asset track change.
Declaration
static let AVAssetTrackTrackAssociationsDidChange: NSNotification.NameDiscussion
The system posts this notification only for changes that occur after an asset’s track’s availableTrackAssociationTypes property reaches a AVKeyValueStatus.loaded status.
See Also
AVFoundation
AVAssetChapterMetadataGroupsDidChangeAVAssetContainsFragmentsDidChangeAVAssetDurationDidChangeAVAssetMediaSelectionGroupsDidChangeAVAssetTrackSegmentsDidChangeAVAssetTrackTimeRangeDidChangeAVAssetWasDefragmentedsubjectAreaDidChangeNotificationwasConnectedNotificationwasDisconnectedNotificationformatDescriptionDidChangeNotificationdidStartRunningNotificationdidStopRunningNotificationinterruptionEndedNotificationruntimeErrorNotification