Research into similar products (sound in horror films)

sound in horror films makes the scene either look happy, eerie or extremely scary. the effective use of sound can also help promote the emotions of the characters to the audience. the diegetic sound of the door squeaking as it opens at 0:12 makes the scene as it adds to the effect of the scary location as they are in a creaky old abandoned house which is the typical scene in horror films.
the voices that are used (predominantly by the possessed female) throughout the trailer reflect the fear of the characters the best example would be at 0:11 to 0:55, the tone of the voice shows that she is clearly scared and frightened. compare this to the tone of the same female character at 1:34 where when she talks it is a very deep and strong which is well suited to the part as the character needs to create fear. in the trailer they have to use sound to create fear because the possessed female wouldn't create the same level of fear if her voice was high pitched.

Research into similar products (Editing conventions)

Editing is important in films as it will set the pace of the scene. it is especially important in horror films as a good horror film needs a well set editing pace. in horror films/trailers the most common edit is fast paced editing and quick cuts. the fast paced editing makes the scenes zoom by giving the viewer the exciting feeling of the scene whether someone is running away for a killer or the villain makes an appearance. the quick cuts are the things that make the audience jump as it is easy to scare someone with a quick cut as the viewer wont expect the cut forcing a jump scare. using fast paced editing and quick cuts together makes the audience believe that everything on screen is being performed in haste making them also feel a sense of urgency. using both conventions and a series of close ups and hand held camera work will help to increase the feeling of urgency as the camera is shaking and you are switching to a different shot every few seconds makes it look like the character(s) are rushing to get away from something.

Research into similar products (Horror Camera angles)

Conventions of horror trailers (Camera Angles):

The Establishing shot of horror films is usually to show off the spooky/eerie location that the characters find them self in. this shot could also be a way to put into perspective how desolate the house, town or city is  

Close ups are used to show the emotions of the character in the scene or in this case Jack Torrance's case it shows his insanity and anger. close ups are a good way of capturing the detail of an important scene.

 High angles are used to show the vulnerability of the character and in horror films they are usually seen when the villain is standing over the character which shows us that the character is completely powerless to the villain

 low angles are used to show how scary and intimidating the villain is. this makes the audience and the character feel weak and insignificant. 

Zooms add dramatic effect to the scene as they are usually used with a quick cut which makes the audience jump out of there seats. Zooms create a sense of fear as the audience doesn't know what they are going to see next which also creates suspense