Storytelling

Films hinge on a story, if a film doesn't have a plot and a solid story to go with it it can be quite boring to watch, some include narration of a scene perhaps whilst it's taking place, and some can be emphasized even more with editing. For example bedtime stories by Adam Sandler is a self narrated piece.

Storytelling was evolved hugely by Porter when the introduction of sound and voice appeared in film and video, before that it was strictly what was happening on the screen.