what is a Teaser Trailer?

Trailers in general are a vital part of any marketing campaign. They diverse information about a film, and are to create a media hype around it. Teaser trailers are the stage before, and insteading of giving information about the film away, it is used to get people talking about it. Teaser trailer are usually under a minute in length, keeping them short and memorable. These are usually released well in advance of the film being focused on.