Film Genre Trailers

Thriller

Paranormal Activity 4 

The purpose of the paranormal activity 4 trailer is to promote the film and genre with in this case is thriller. You can tell that the genre is thriller due to the jumpy bits being incorporated in the trailer, it has you at the edge of you seats it also keeps you watching. This film would be target at people at between the age of 17-25, this is due to the characters, story line and genre of the film. The trailer would also give active audiences a first hand experience to go see the film that would then go and make them see it more. 
The narrative of the film trailer is that you see a girl talking to her mum about strange happens in the house which is then linked with the showings of the previous film history. Then we see the young girl on skype to a boy and from there we see a young boy standing on her drive just staring at the house and we see the boy look at the girl and the outside light goes off. We then hear the house security alarm say "front door open, back door open" then we see a figure behind the girl and then it goes fuzzy and finishes this leaves you in suspense. 
There are no famous stars in the film trailer of paranormal activity 4.
The editing used in the film are fast paced cuts when they show the clips of paranormal activity 3, then slow paced cuts when the girl is talking to her mum, then the start of when she is on skype to the boy then as it progresses the cut pace increases again building up the tension this is when it goes to black and trailer is finished. There is also the fuzzy element which acts as if it is filmed by her and the perspective through the skype camera.
The dialogue in the trailer is informal and this seems as if it is just a ordinary film without too much of an in depth meaning to the  film, this also helps establish the target audience. The dialogue is informal this also represents the link and familiarity to everyday life.
There are various different camera angles used in the film trailer of paranormal activity 4, this consisted of close ups, extreme close ups, mid shots, point of view shots etc. These various camera angles allow you to feel certain feelings at the points of the film. 
There are 7 titles shown throughout the film trailer these titles appear on a pure black background with white writing that looks typed on a type writer. 
There is no voice over in the trailer of paranormal activity 4. 
There is no background music in the film trailer but there is a noise that sounds like a disconnection this happens when you you see the fuzziness on screen.
The climax of the trailer is when the girl is on skype to the boy and the strange happenings are taking place. Then the climax is when the girl actually gets taken by the dark figure we see in the background and then it goes to black. 
There are  7 characters in the film trailer of paranormal activity 4 along with 54 cuts and 14 different settings throughout the trailer.

Comedy  

Step Brothers

The purpose of the film trailer is to promote the comedy side of the film to active and passive audiences, this also helps establish the target audience which I would say is boys aged been 17-25 as the humour used and the things they talk about and the situations they are in. From the trailer we can already see that the film is going to be in comedy genre.
The narrative of the film trailer step brothers is two mens parents fall in love get married and then they move in together. At the first the men hate each other  then they get closer, help each other in need and become best friends.
The stars in the film trailer step brothers are Will Ferrell and John C Riley these both play the brothers.
The editing in the film trailer consists of slow paced cuts this represents that there is no official climax of the trailer as there is no fast paced cuts thats would expect to you feel tension and anxiety.
The dialogue in the film is once again in formal as they use rude language, talk about rude things, and the way they talk to each other and the interviewer it shows that they are immature and don't really act their age as they have always got what they wanted.
The camera angles in the film trailers are long shots, mid shots, and close ups. This shows you strange facial expressions this allows you to tell you when to laugh etc.
The titles in the film trailer consist of a blue background with white writing.
There is no voice over in the film trailer.