How old is that video? For at least the last 20 years major brands of 2oz hot dogs and hot dog buns both come in packages of 8.
I buy Omaha Steaks 3oz hot dogs, which come in packages of 4, and the bratwurst buns they fit come in packages of 6, so I buy 3 packages of hot dogs and 2 packages of buns. That's why freezers were invented!