There is a difference between narratives and stories.
Narratives are an open-ended sequence of events. Stories are narratives with a beginning, middle and end in which a character is changed in some way through conflict.
Video lends itself well to both stories and narratives.
Your video itself can be a story. Bell’s Whiskey ad, The Reader is a good example of this:
Or your video can be a narrative. John Koenig’s Vemödalen is a terrific example of this:
Next time you use video, be clear about whether you are designing a story or a narrative.