Difference between teaser trailer and full trailer.

The Hills Have Eyes 2:
Full Trailer: 1:54 mins


Teaser Trailer: 1:05 mins


Sorority Row
Full Trailer: 2:31 mins


Teaser Trailer: 0:15 mins


Points to make on full length horror movie trailers:

• They are a compilation of small clips from the complete movie.
• They give hints and suggestions to the plot, so you can follow the trailer.
• They will show all of the main characters.
• They can, and usually do, end on a cliffhanger, or a shocking scene.
• They use various shot angles.
• They have a wide use of colour in them, although the colour will usually fit to the genre.
• They use dialogue to hint to the plot and create tension.
• They use dramatic music, and there can be a few different types of music in one trailer.
• They show the full details of the movie release.

Points to make on teaser horror movie trailers:

• They show one clip from the film.
• This one clip does not particuarly tell you about the plot of the movie.
• They show a limited amount of characters, if any.
• They do not always show you a real clip from the movie, as we can see from Hills Have Eyes trailer.
• They can use one camera angle, as we can see from The Hills Have Eyes trailer.
• Because they only contain one scene, there is limited use of colour.
• There is a limited amount of dialogue used.
• They use one continuous sound clip, though it may contain a sudden change, possibly at the end, as we can see from Sorority Row.
• They have a limited amount of details about the release of the movie, such as simply "Coming Soon".
  

However, both types of trailers have one thing in common: they use the shock factor. This is because, no matter how long the trailer is, it needs to keep the audiences attention, and needs to stick in their mind. As these are horror trailers, the best way to do this is to use the shock factor.

Another thing to note, is that sometimes, for example in the Sorority Row full trailer, they use the clip from the teaser trailer.