The difference between a teaser trailer and a theatrical trailer.

A teaser trailer is generally shorter than a theatrical trailer as it is released before the theatrical trailer. The theatrical trailer has more information in it and is obviously longer than the teaser trailer. The teaser trailer doesn't give away any characters or the plot of the story. A good teaser trailer builds up the audience so they want to see more. It creates excitement and means that more people will watch the theatrical trailer resulting in more viewers for the film. The Teaser trailer also helps create suspense and publicity, it 'hypes' up the audience.