Complex sentence: The video ends with Run DMC showing up to a gig in Japan six months later, where they find the duo impersonating them; unable to tell the difference, the concert promoters deny Run DMC the chance to perform.
Split into simpler sentences: The video ends with Run DMC showing up to a gig in Japan six months later, at which they find the duo impersonating them. Unable to tell the difference the concert promoters deny Run DMC the chance to perform.