Research into similar products - Teaser Trailer Analysis

Camerawork
The establishing shot is a pan around the room onto the mirror draped with a cloth hanging on the wall. This sets the scene and still withholds a lot of the mystery as the audience are in the dark about what the object on the wall is at this stage in the trailer. There is a wide shot used after this and the camera also zooms in closer to the mirror however all you can see is a dark dingy loft. The mystery object (the mirror) is the focal point of this shot. As the piece of material drops the camera stops zooming in and stays at a wide shot showing the rest of the scene also. The slow zoom creates tension for the audience which is useful in a horror trailer especially. The screen blacks out and then a series of events flash on screen with the use of a lot of different camera angles including a canted angle and a close up. The variety of shots used here gives the audience an impression of panic. Finally there is a mid shot of a woman which quickly zooms into a close up which would shock the audience but this happens after the screen has blacked out. 

Sound
The deep, non diegetic sound creates a rumbling noise and a tense atmosphere. In horror trailers there is always deep, disjointed soundtracks to represent the on screen mood. As the mirror comes onto the screen a high pitched whistling noise begins which is very eerie. From the start to end there is very little diegetic sound. The only diegetic sound is the sound of the chain and the sound of the wind when the sheet drops from the mirror. There are no screams and no panicked responses that the audience can hear from the characters. The soundtrack does not match the clip continuously as there are close ups of characters screaming however the audience do not hear those screams. The voice over from the beginning of the clip is the voice of a little girl which is common in a horror film, by using the voice of a child it creates a much more creepy atmosphere. As the events flash on screen the soundtrack becomes a lot more intense.

Mise En Scene
Throughout the trailer there is low key lighting- also typical of a horror trailer. Low key lighting is used so that the audience can put themselves into the characters shoes and feel the on screen mood. The setting is mainly the dark and abandoned loft which is very dusty and you can tell it isnt cared for. The only costumes I really picked up on in this trailer where the ones of the three children stood together with sheets covering them. This instills a 'fear of the unknown' to the audience. 

Editing
The use of fast paced editing is very effective to use in a teaser trailer as it gives short quick glimpses of events in the film without giving too much away. The aim of a trailer is to make the audience want to pay to watch the film and by giving these short snippets of action, it causes curiosity within the audience. Some shots are on screen for no longer than a second which is very effective in this case.