Here is what I got:
Put video in Movie maker, slowed down x4, and then made the video black and white, so I could make out the tape better. Then the math -
Ball rotates 19.5 times from point of release to point of impact with pins.
Ball hits pins after 2.35 seconds
So if it revolves 19.5 times in 2.35 seconds then - 60 seconds / 2.35 seconds = 25.53 then multiply that by the number of revolutions in the original 2.35 seconds, 25.53 x 19.5 = 497.8 Revolutions per Minute.