However, in the film ‘Twilight’, (which is a adventure, fantasy genre) a ‘Summit Entertainment’ production logo is used; the mountains in the background connote adventure, this indicates that the film is going to have mysterious events and suggests that the characters in the film have no idea what is going to happen to them. This would intrigue the audience, as mountains are isolated and set outside and away from society. This may suggest that the characters in the film are not part of society indicating they may be non-human. Also, the colour scheme is different shades of blues, blue connotes nature, and this suggests that the film is set in a forest, in a rural setting. The production logo used in trailers sets the mood and indicates to the audience what genre the film is going to be. In the film ‘Hellboy’, the colour scheme and production logo (Universal Studios) is associated with action and sets an ominous mood. However, ‘Summit Entertainment’ is used in ‘Twilight’ trailer which is associated with adventure and mystery this comes across within the production logo. This suggests that production logos are important in determining and indicating to the audience what genre the film is going to be.
In the trailer, '50 first dates' (which is a comedy,romance genre), a 'Columba' logo is used. the rainbow in the background and the colour scheme of yellows,sky blue and whites are seen as being funky, vibrant colours this would immediately indicate to the audience that the film in a Romantic Comedy. Also, by judging the colours used in the production logo it indicates that the film is aimed at a young adult audience. The neutral colours of blues and yellows suggests that the film is aimed at both male and female genders. We see that the film has comedic aspects through the use of a white light which almost looks like the sun behind the 'Columba' title, the connotations of a sun is fun and happy which suggest that the film is enjoyable and relaxing to watch. The 'Columba' production logo is a complete contrast to the 'IFC Films' production logo used in 'The Pact'. The most obvious difference is the colour scheme, the black and white colour scheme in the 'IFC Films' logo is dreary and ominous compared to the vibrant colours in the 'Columba' logo.
Sound is another common convention in film trailers. In the film 'Hellboy 2' the non-diegetic foley sounds gets across the mood of the trailer which then the audience can identify which genre it is. In the trailer Hellboy 2 we immediately are notified that the film is an action due to the fact of ominous sounds at the beginning of the trailer. Also, the setting is important is establishing the scene and also, would indicate that the film is an action. The non-diegetic whooshing sounds are shown quite frequently at the beginning to the middle of the trailer, the first whooshing sound is heard when the title of the Directors name appears "From the visionary director of Pans Lamyrinth" this creates suspense and creates an ominous tone, we hear further whooshing sounds when the trailer shifts from one scene to another. This reinforces the ideas that time has passed through the whooshing sound and create enigmas for the audience to make them wonder what is going to happen next. We also hear slow piano notes at the beginning of the trailer creates mystery and makes the trailer appear chilling. The whooshing sound also indicates that this may be indicating the presence of the protagonist of the film and how important the character is in the film. The sound of rumbling impends danger and action and unnerves the audience as it makes them think that something bad is going to happen. As the trailer progresses the sound of drums and violins get louder, this builds up the tension and creates mystery this indicates that characters will clash with each other. 
Sound is important in establishing the tone of the trailers. Different types of sounds will be used for different styles of trailers. For example in the Comedy film; '50 first dates', the sound used in the trailer is non-diegetic Hawaii music which gets across that the film is based on an event that happened in Hawaii. Also, 
Barthes cultural codes are shown in trailers. In the trailer 'The pact' haemeneutic codes are shown, this is shown through the main character as we are left wondering whether or not the main character will survive in the film and whether she will be able to get rid of the evil spirit/demon that is killing the people that come into the house, this creates a sense of mystery and suspense to the audience which will make them want to go to the cinemas to find out. we also come across Haemeneutic codes which tend to be used in mystery/thriller/horror genres, this is because they creates questions in the audiences mind of what is going to happen to the characters in the trailer. in the trailer, 'The pact' this is shown when the audience are left wondering who the killer is. Could it be a spirit from beyond or is the killer a human who is lurking in the house? The audience are left wondering and the only way they could find out is if they watch the film. Similar proairetic codes are shown in the trailer 'Hellboy', as the audience is left wondering what will happen to the 'Blue' and 'Red' characters in the film, which creates a mystery. Will the protagonist be able to defeat the antagonist? Proairetic codes are used in most genres, as in the trailer '50 first dates' (which is a rom-com) we again are left wondering whether the female character who has short term memory loss will be able to remember the male character who she dated a few years ago, it almost intrigues the audience to want to watch the film at the cinemas to find out what will happen to the characters.
The fast editing pace is also a common convention amongst all types of genres. For example in the film 'the pact', the editing pace becomes faster near the end of the trailer, this creates mystery and nerves the audience as it builds up the tension. The use of fades to black throughout the trailers creates mystery as it leaves the audience to wonder what is going to happen. The use of low key high contrast creates a gloomy feel and suspense. However, the editing pace in '50 first dates' is a complete contrast to 'The pact' trailer. The editing pace is slow, which gets across romance and comedy as it makes the trailer appear friendly and relaxed. Also, the lighting is high key low contrast, which further enhances to the mood of the trailer of being comedic.
Another common convention in a trailer is the jump cuts used, this gets across what happens in the trailer in a 2 minute showing, this also, makes the audience see what the film is leading to, which is most trailers builds up to a dramatic cliff-hanger which would make the audience want to go to cinema and watch the film. Jump cuts are used is all trailers as it doesn’t try to give too much away of the storyline.
Claude Levi Strauss- binary oppositions are also used in most genre films. The most common binary oppositions used in all film trailers are good versus evil, in the film ‘Twilight’ good is shown through Kristen Stewart and Robert Patterson’s character and evil is shown through the vampire characters. In all films, good vs evil is shown to make the storyline of the film interesting so it grabs the audience’s attention. Also, the audience will want to know what will happen to the evil character, so they will be more likely to go to the cinemas to find out. Also, in most films the binary opposition of power versus powerless appears in the film ‘Twilight’ we see power through the vampire characters as they have powers to ‘fly’ from one place to another; the vampires hold a strong position in society in the film. Kirsten Stuart’s character is seen to be powerless in society. This reinforces the idea of female characters being seen as victims/ damsel in distress according to Proppian characterisation, which may indicate why Kirsten Stuart is positioned lower down in status according to other characters. However, in action films such as 'Hellboy' we tend to come across binary oppositions of human versus non-human, this is shown through how Red and Blue as seen as being non-human due to the fact that they have superpowers and can fly, this shows the non-human creatures to being more powerful and dominant than humans. Binary oppositions of human versus non-human tend to be shown in action genres to get across superpowers as this is not normally seen in everyday events, this makes the film appear unrealistic.
It is common for action/horror/thriller genres to have lots of close-up shots in the trailers. In the trailer 'Hellboy' lots of close-up shots are used this gets across mystery and suspense and it leaves the audience to focus on particular events in the trailer and it connects the audience to the plot of the film as it makes the audience involved in the events that occur in the film creating tension and makes the audience uncomfortable. However, in trailers such as '50 first dates' which is a rom-com, they are fewer close-up shots used; this makes the film appear fun and relaxed and doesn't intimidate the audience.
