canAddTrackAssociation(withTrackOf:type:)
Determines whether it’s valid to associate another input’s track with this input’s track.
Declaration
func canAddTrackAssociation(withTrackOf input: AVAssetWriterInput, type trackAssociationType: String) -> BoolParameters
- input:
An asset writer input that contains the track to associate.
- trackAssociationType:
The type of track association to test.
Return Value
true if the system can make the association between tracks; otherwise, false.
Discussion
This method returns false if the association type requires tracks of a media type that doesn’t match the input’s type, or if the output file type doesn’t support track associations.