tracks property
Identify a track from the input audio to include in this selector by
entering the track index number. To include several tracks in a single audio
selector, specify multiple tracks as follows. Using the console, enter a
comma-separated list. For examle, type "1,2,3" to include tracks 1 through
3. Specifying directly in your JSON job file, provide the track numbers in
an array. For example, "tracks": 1,2,3.
Implementation
final List<int>? tracks;