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Comparison between teaser trailers and normal trailers:
The obvious difference between a teaser trailer and normal trailer is the length. Teaser trailers vary between 30 seconds- 1 minute in length however a normal trailer can be 1 and a half minutes to 3 minutes. A teaser trailer gives away a lot less of the plot and story line whereas an ordinary trailer gives away a lot more of the story line. Both trailers are effective however in different ways. Both kinds of trailer show the audience what the film is about without giving away too much. A teaser trailer will leave the audience with a lot more questions on their mind. Both kinds of trailer will grab the audience's attention and entice their interest. As you can see below the different types of trailer and how they differentiate:

Teaser Trailer

Camerawork

The establishing shot is a canted angle which is panning downwards. The shot is of an old looking manor house/castle type building which immediately gives the audience the impression it is spooky.  The camera changes so that it appears to be old footage. As it pans it goes onto a long shot of what appears to be a little boy just stood, staring. The camera changes shot and pans up onto a little boy who is staring into the camera as something falls from the ceiling. It is a close up of the boy’s face which reveals the threatening look. There are a series of shots showing people adjusting equipment. A girl is lay down on a table draped in a cloth and the camera zooms into her to reveal the somewhat scared facial expression. Close ups are used to show locks on the door being loosened which makes the locks significant and could potentially worry the audience as to what is behind the door. A medium shot is used which shows a man opening the door looking very worried which would further enhance the audience’s suspicions. There is a close up of the little girl who was lay on the table standing up holding tightly onto a dolly which represents the innocence of childhood however the shots which follow show the girl is very troubled. The final shot is a low canted angle of a door opening slightly however the rest of the shot is in darkness which means that the mystery is retained. 

Sound

The soundtrack begins with the sound of an old camera reel. This gives the impression that it is old fashioned footage or a home movie of some sort which gives the film some authenticity. As the establishing shot comes on screen you can hear bells ringing. The first character we see poses the question 'what is the supernatural?' This will let the audience know that the film is going to be about spirits and supernatural occurrences. A gust of wind sounds as the old footage of the creepy little boy is shown. Sounds like this are typically in horror movies as it gives the audience a rush of adrenaline. The crashing of the item falling from the ceiling is unexpected so would most likely shake the audience up. The effect of this is that there is something to surprise the audience and keep them on the edge of their seats. There is the sound of people singing which is muffled. The noises are choir like which has connotations with a church which would lead people to thinking about exorcisms and spirits. At the end of the clip there is a loud buzzing noise along with a series of screams which panic the audience and would leave the questioning what has happened. By something shocking happening at the end of trailer it makes the audience want to continue watching. 

Editing

The editing used is quite fast paced however it is not chaotic until the end of the trailer.

Mise En Scene
The setting is an old house which gives the impression that there are most likely going to be spirits present. Costumes used are very simple and I feel like this is effective. The main focus is the events which are happening. The possessed girl is wearing a plain white dress and she looks exhausted. This effect would have been achieved through the use of makeup. The rest of the characters are in very normal clothes as it is trying to portray a real life event. 

Normal length trailer

Camerawork

The establishing shot is a dolly as it focuses in on a detective walking through some doors.

After seeing this there is a low angle of a man putting on rubber gloves which has connotations of an investigation being carried out. There is a mid shot of a body in a bag and a woman's body draped over. The shot is on the screen for a short amount of time which creates a sense of anxiousness among the audience as they do not know why the bodies are there and who they are. This then changes to a very distorted shot of a woman standing at a train station. The contrast between the strange shot of bodies and the normality of the train station may come as a shock to the audience and may cause confusion. The confusion is intended as the scene is blurred and very distorted. An over the shoulder shot is used to follow the man who is following the girl through an underpass. The audience know the man is behind her however she does not which would cause a sense of frustration within the audience as the character is vulnerable. This shot allows the audience to empathize with her. A medium shot is used of the girl looking very stressed out as she works. She takes a deep breath and then bends over to pick something up off the floor however the camera does not move and as her body comes out of the shot you can see a dark figure standing behind her which again puts the character at a very vulnerable position. There is an over the shoulder shot which is quite close up and shows a figure emerging behind the girl. The audience would be panic stricken as the fear for the girls safety. There is a point of view shot used which appears to be through some sort of hole in the locker, this also reveals that the girl is being watched.  A long shot is used down a corridor and shows a body being dragged and then switches to a canted angle of the main character running in a panic. There is an aerial shot of her running up some spiral stairs which does portray panic but is also portrays a sense of chaos.  The aerial shot is again used to show her falling from the top of the stairs. 

Sound

In this trailer there is no speech. There are deep sounds throughout the whole length of the trailer. This is all you hear from beginning to end. When there is more action on screen the sounds become more intense and more fast paced. The only diegetic sounds are muffled screams towards the end of the trailer. I feel like this use of sound is effective as it maintains the tension throughout. A lot is going on on screen however there is no speech to give away the twists in the story. 

After watching both types of movie trailer I can see how my teaser trailer will need to be structured a lot differently than a normal trailer so that there is an insight to the plot and main characters are revealed in such a short amount of time.