A dissolve is when a shot fades and surrenders visual presence in order to transition to a subsequent shot that takes over. This clip from Shane is not that. This a shot of a gunslinger (Jack Palance‘s “Wilson”) quickly fading into a ghost — literally nothing — and then physically re-appearing three or four seconds later. He disappears in order to make a point (yo soy Senor Creepy), decides that the point is made, and then rematerializes into flesh, blood, bone, boots, hat and gunbelt.