I think its 1 entire 20 min segment, but I've never watched it all the way thru. The DVD is 3 sections, that are roughly 20 mins each. Seems to me a whole 20 mins workout would fit in a 30 min time slot, even with commericals. I think StretchMax is the same way on FitTv. One, entire section of the DVD is played all the way thru.