Global Variable

AVTrackAssociationTypeSelectionFollower

The second track in the association is considered an appropriate default for the first track.

Declaration

const AVTrackAssociationType AVTrackAssociationTypeSelectionFollower;

Discussion

An association from one track to another specifying that when the user selects the first track, the second should be considered an appropriate default selection. For example, a follower for an audio track could be a subtitle track in the same language. When the user chooses a language for audio, the subtitle language “follows” the audio language selection.

See Also

Track Association Types

AVTrackAssociationTypeAudioFallback

The track contains the same content as another track, but in a more widely supported format.

AVTrackAssociationTypeChapterList

The associated track contains chapter information for the base track.

AVTrackAssociationTypeForcedSubtitlesOnly

The subtitle track containing forced and non-forced subtitles is associated with a subtitle track containing only forced subtitles.

AVTrackAssociationTypeMetadataReferent

The metadata track is associated with the track being described or annotated.

AVTrackAssociationTypeTimecode

The track is associated with a timecode track containing timing information for the original track.