This is a trailer for the return or the American soap opera Dallas
I will deconstruct parts of it to demonstrate the different editing techniques a soap trailer can use to make it exciting, effectively tell a narrative in a short space of time and also build tension.
BEAT MATCHING
The trailer uses beat matching throughout which is an extremely important and effective way of grasping audience attention and creating a tense or exciting atmosphere. Quick cuts are used to flick between clips from different scenes, ensuring that a story is clearly told. Each cut matches a beat which makes everything fit together. Some clips can change on a beat and then last for several seconds whilst dialogue is spoken, (see 40s) whereas some cuts can be choppy and show short snippets of facial expressions (see 20s)
SOUND BRIDGING
Some clips withing the trailer feature voice over audio that begins as non-diegetic sound and then changes into diegetic. This is due to the trailer playing the audio of one clip, over another clip which then changes back to the original one where the characters mouth is in sync with the dialogue. This anchors certain dialogue or storylines together to make clips easier to understand for the audience. An example of this is shows at (22s) in the Dallas trailer, where a long shot of a building getting closer to the camera is overlapped with the speech that belongs to the next clip.
BACKGROUND MUSIC
The use of background music is important in trailers as it contributes to conveying the narrative of the soap. Important features when choosing a background track include the beat of the song, how fast or frequent they are, the tone and key of the music; major keys can create positive and exciting atmospheres, whereas minor keys can convey tense or negative atmospheres; and also many trailers often use tracks which reach a crescendo which allows the trailer to become more dramatic or tense at the end, leaving a cliff hanger for the audience. Trailers often use songs with lyrics that relate to the plot lines which further increases the audience's understanding of the plot lines, however this particular trailer uses music with no words.
ON-SCREEN TEXT
TV trailers often use text within their clips to convey particular meanings, story lines or emotions which the soap involves. This can help the audience to understand when the following clips are showing. This example of the Dallas trailer uses text effectively as it also fits with the beat of the music, (see 8s) and it also sounds like crashing symbols as the words (such as "MONEY" ""POWER" and "RIVALRY") appear on screen, creating a sense of importance, excitement and urgency.
VOICE OVER
Trailers for soaps and also films, regularly have a voice over. This is often a very deep male voice but can sometimes be female. For example in the Dallas trailer I have posted, the male voice over says phrases such as:
"NEXT SUMMER"
"TNT INVITES YOU TO COME BACK"
"TO THE ONE PLACE THAT'S GOT IT ALL"
"TELEVISIONS LANDMARK DRAMA RETURNS"
"DALLAS"
"A NEW SERIES COMING SUMMER 2012"
These phrases are split up and dialogue and clips from the soap are fitted in between. This allows the narratives to be shown in small snippets, with an overlying voice talking about how viewers can watch this soap when it comes out.
PAUSES
When building tension, trailers often use pauses to abruptly stop the music. This can enable a significant piece of dialogue to be emphasised as everything is silent and a few words are spoken. This is shown in the Dallas trailer, (see 18s). This creates minor tense moments where all audio is focused on speech and no background noise. This is usually followed by the music suddenly returning in a loud built up crescendo, typically with lots of faced paced cuts and edits, which creates a contrast between the slow tension and the exciting action.