19min trailer
ok
So... the average trailer lasts like 2 minutes with 30 seconds(2.5 minutes) and the average movie lasts like 1 hour and 30 minutes(90 minutes) then:
90/2.5 = 36
36*19 = 684
684/60=11.4
THE MOVIE IS GOING TO LAST 11.4 HOURS, GG.
the actual movie is gonna be like an hour long xd