What is the difference between a teaser trailer and a theatrical trailer?

A teaser trailer is a short trailer that is often used to help to advertise an upcoming film or other media form. It can be released months before the due date of the official film to help create anticipation and interest from the target audience. A theatrical trailer is a much more in depth well revised longer trailer which tells us more about the plot of the film and gives us exact dates when it will be out.

A teaser trailer is a lot shorter compared to a theatrical trailer. The teaser trailer’s main purpose is to “tease” the audience with short snippets from the movie and by not revealing too much of the plot. A teaser trailer is normally under two minutes whereas a theatrical trailer is usually much more than this; sometimes up to four or five minutes.