Is it possible to make a DVD autoplay after a period of 30 seconds in Encore? So, if no option is selected after 30 seconds the timeline plays from the beginning.
Just set the menu duration to 30 seconds, and make its end action the timeline you want to play.
If you only want this to happen once, create a duplicate menu with a duration of "forever" and an end action of stop.
Set the 30 second menu as first play.