Adds one or more empty tracks to the target movie and copies the track settings from the source tracks.
- iOS 13.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- watchOS 6.0+
An array of asset tracks to be added.
A dictionary that contains key for specifying the movie object initialization. Currently, no keys are defined.
An array of
AVMutable objects. The index of a track in this array is the same as the index of its source track in the
Properties involving pairs of tracks,such as track references, are copied from the source tracks to the target tracks.