Different Kinds of Trailers
Using the film Mr. Holmes (2015)
The Main Trailer (1.55 mins)
Dan Skinner from TeachingTrailers describes trailers as the basic sales tool for the film, and its the basic sales tool that all films have at their disposal. It is an incredibly important part of the marketing machine as its goal is to intrigue and obtain an audience. He also explains how the distributors don't have much time to convey the genre of the film and who's in it, and that's the key to a trailer. As it is the first impression people get of the film, its very important you get people getting the urge to need to see your film.
The Main trailer provides a deeper sense as to what the film is about, with the distributors having a slightly longer time frame than the teaser or TV spot to get across information about the film. The main trailer usually fits a '3 act structure' and that is exactly how Mr. Holmes has done.
The beginning is used to introduce characters and introduce the dilemma that Mr Holmes has been challenged to solve. The middle builds the story further, elaborating on the antagonists and further developing the problem at hand, and the end of the film is a strategical masterpiece that aims to amaze the audience and entice them, in this case there is a very large question that goes unsolved: What did Mr Holmes do wrong? Does he solve the case?
The main theatrical trailer usually incorporates the director too, and the successful films they have done in the past. This helps to encourage previous established audiences to watch the film as well. The main marekting strategy to sell the film is with this type of trailer and can be found in multiple places: online, in cinemas before a film and other media devices

The Teaser trailer (50 secs)
The Teaser trailer to a film tends to be much shorter than the main trailer, lasting less than a minute, with the main aim to excite the audience.
The Teaser trailer also tends to be lighter on story information, but compensates for this with a much more action packed view as to what the film will be like.
Teaser trailers tend to be released months before a film is actually released, so the distributors have the inclination to use fewer shots from the film, as to not give away too much information. This can work to the advantage of the trailer, generating a sense of enigma that will further entice the audience to want to watch.
The TV Spot (30 secs)
The function of the TV Spot is to build awareness of the hook for the viewers at home. This type of trailer has a very limited time in which to grab the attention of the viewer and so the most action-packed and climactic scenes must be utilised in order to retain an audience.
This trailer focuses on the familiar and traditional values of Sherlock Holmes. This is so that the audience that are familiar with these values pay attention to the trailer being shown before them.
This trailer is also helped along with audio cues that the viewer will pick up, and hopefully intrigue them. the Sherlock Holmes franchise is all based around mystery, and this mystery will help obtain an audience. "I must have done something terribly wrong" is a very climactic sentence and will intrigue the curiosity in the viewers mind and is a very good way to keep the trailer moving.


Future
SUBTITLE HERE
Here, you can elaborate on your topic and add more information. You could include up to 7-8 lines of text, as long as you break them up into paragraphs, making them easier to read.
Source : Remember to give credit to your sources. Insert links to original articles and try hyperlinking them!