Editing.

Editing plays a massive role in creating the genre and the themes of the film come to life within a few minutes of a trailer. The use of fast-paced editing is used often in film trailers, which gives you lots of images from the film which makes you want to know what they actually are, which is a great effect of getting the audience's attention. However normal-paced editing can be used for a family film, maybe a quicker edit such as a jump-cut to speed the process up. There are also use of editing in matters such as fades and blurrs, which again switches the scene in a trailer either fast or slow for a certain effect according to the genre. Here are some example trailers I have analysied specifically about Editing:

Planet of the Apes

Use of fades at the beginning of the trailer gives us the impression of something both out of the ordinary and maybe a dark side to the film?

Fades after every shot creates a strange but good effect

With mixture of sound, editing and camera shots you get a good effect, for example close ups of the monkeys cages, then a fade with tense/dramatic music followed by the next close-up

Pathetic fallacy is also used in this trailer, when there is the shot of the monkeys running out from the roof, the sky is black and cloudy which signifies the film and its connotations of the scene being bad.

Editing in this also shows you writing on the screen, giving you an idea of the film.

The Guard

Editing was quite an average pace and not too quick as it is a comedy genre, so they want you to hear the jokes made in the film in order to draw the certain type of audience in.

Music was average and not too “in your face” and loud, just background music to make it sound like how a comedy would, for example if it had really tense/loud music it may come across as a horror.

Harry Potter: Deathly hallows part 2

After the first shot there is a sudden black-out, which gives you a quite scary effect, which is followed by fast-paced editing of various shots, mainly close-ups giving images of random events in the film, which draws the attention of the audience as they are wondering what they are.

There is a close-up of voldemorts head with a strange breathing noise which gives a freaky effect

This is followed by another fade which also has a building-up type of noise in the background, creating a slightly scary effect.