Instance Property


The time marker groups that provide ways to navigate the player item’s content.


@property(nonatomic, copy) NSArray<AVNavigationMarkersGroup *> *navigationMarkerGroups;


A navigation marker group provides a set of time markers for navigating playback. The most common form of navigation marker group is a chapter list; however, you can also provide other sets of markers to allow a user to jump to significant events in the presentation. For example, a “Goals Scored” marker group might summarize key moments in a recorded sporting event. When you present a player item containing marker groups with the AVPlayerViewController class, the user interface provides options for navigating each group.

To provide a chapter list, use the first item in the navigationMarkerGroups array and set its title property to nil. To provide additional or alternate means of navigating content, use a unique title value for each navigation marker group in the array.

See Also

Associating Metadata for Playback with AVKit


The time ranges of the player item’s time line that represent interstitial content.


An array of additional metadata for the player item to supplement or override that is embedded in the underlying media asset.


The item proposed to follow the current content.