Constants for identifying how other tracks are associated with a track.
SDKs
- iOS 11.0+
- macOS 10.13+
- Mac Catalyst 13.0+
- tvOS 11.0+
- watchOS 6.0+
Framework
- AVFoundation
Declaration
struct AssociationType
StructureAVAsset
AVAsset
Topics
Track Association Types
static let audioThe track contains the same content as another track, but in a more widely supported format.
static let chapterThe associated track contains chapter information for the base track.
static let forcedThe subtitle track containing forced and non-forced subtitles is associated with a subtitle track containing only forced subtitles.
static let metadataThe metadata track is associated with the track being described or annotated.
static let selectionThe second track in the association is considered an appropriate default for the first track.
static let timecode: AVAssetThe track is associated with a timecode track containing timing information for the original track.
Initializers
Relationships
Conforms To
See Also
Working with Associated Tracks
var availableAn array of association types used to associate the track with other tracks.
func associatedCreates an array containing other tracks associated with the track that uses the specified association type.