||The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. (June 2012)|
A trailer or preview is an advertisement or a commercial for a feature film that will be exhibited in the future at a cinema. The term "trailer" comes from their having originally been shown at the end of a feature film screening. That practice did not last long, because patrons tended to leave the theater after the films ended, but the name has stuck. Trailers are now shown before the film (or the A-movie in a double feature) begins.
Movie trailers have now become popular on DVDs and Blu-ray Discs, as well as on the Internet and mobile devices. Of some ten billion videos watched online annually, film trailers rank third, after news and user-created video.
The trailer format has also been adopted as a promotional tool for television shows, video games, books, and theatrical events/concerts.
The first trailer shown in a U.S. film theater was in November 1913, when Nils Granlund, the advertising manager for the Marcus Loew theater chain, produced a short promotional film for the musical The Pleasure Seekers, opening at the Winter Garden Theatre on Broadway. Loew adopted the practice, which was reported in a wire service story carried by the Lincoln, Nebraska Daily Star, describing it as "an entirely new and unique stunt", and that "moving pictures of the rehearsals and other incidents connected with the production will be sent out in advance of the show, to be presented to the Loew’s picture houses and will take the place of much of the bill board advertising". Granlund was also first to introduce trailer material for an upcoming motion picture, using a slide technique to promote an upcoming film featuring Charlie Chaplin at Loew's Seventh Avenue Theatre in Harlem in 1914.
Up until the late 1950s, trailers were mostly created by National Screen Service and consisted of various key scenes from the film being advertised, often augmented with large, descriptive text describing the story, and an underscore generally pulled from studio music libraries. Most trailers had some form of narration and those that did featured stentorian voices.
In the early 1960s, the face of motion picture trailers changed. Textless, montage trailers and quick-editing became popular, largely due to the arrival of the "new Hollywood" and techniques that were becoming increasingly popular in television. Among the trend setters were Stanley Kubrick with his montage trailers for Lolita, Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb, and 2001: A Space Odyssey. Kubrick's main inspiration for the Dr. Strangelove trailer was the short film "Very Nice, Very Nice" by Canadian film visionary Arthur Lipsett. Pablo Ferro, who pioneered the techniques Kubrick required as necessary elements for the success of his campaign, created the Dr. Strangelove trailer as well as the award-winning trailer for A Clockwork Orange.
In earlier decades of cinema, trailers were only one part of the entertainment which included cartoon shorts and serial adventure episodes. These earlier trailers were much shorter and often consisted of little more than title cards and stock footage. Today, longer, more elaborate trailers and commercial advertisements have replaced other forms of pre-feature entertainment and in major multiplex chains, about the first twenty minutes after the posted showtime is devoted to trailers.
Many home videos contain trailers for other movies produced by the same company scheduled to be available shortly after the legal release of the video, so as not to spend money advertising the videos on TV. The VHS tapes would play them at the beginning of the tape and the few VHS tapes which contained previews at the end of the film would remind the viewer to "Stay tuned after the feature for more previews." With DVDs and Blu-rays, trailers can operate as a bonus feature instead of having to watch through the trailers before the movie.
Trailers consist of a series selected shots from the film being advertised. Since the purpose of the trailer is to attract an audience to the film, these excerpts are usually drawn from the most exciting, funny, or otherwise noteworthy parts of the film but in abbreviated form and usually without producing spoilers. For this purpose the scenes are not necessarily in the order in which they appear in the film. A trailer has to achieve that in less than 2 minutes and 30 seconds, the maximum length allowed by the MPAA. Each studio or distributor is allowed to exceed this time limit once a year, if they feel it is necessary for a particular film.
In January 2014, the movie theater trade group National Association of Theatre Owners issued an industry guideline asking that film distributors supply trailers that run no longer than 2 minutes, which is 30 second shorter than the prior norm. The guideline is not mandatory, and also allows for limited exceptions of a select few movies having longer trailers. Film distributors reacted coolly to the announcement. There had been no visible disputes on trailer running time prior to the guideline, which surprised many.
Some trailers use "special shoot" footage, which is material that has been created specifically for advertising purposes and does not appear in the actual film. The most notable film to use this technique was Terminator 2: Judgment Day, whose trailer featured an elaborate special effect scene of a T-800 Terminator being assembled in a factory that was never intended to be in the film itself. Dimension Films also shot extra scenes for their 2006 horror remake, Black Christmas - these scenes were used in promotional footage for the film, but are similarly absent from the theatrical release. A trailer for the 2002 blockbuster Spider-Man had an entire action sequence especially constructed that involved escaping bank robbers in a helicopter getting caught in a giant web between the World Trade Center's two towers. However, after the September 11 attacks the studio pulled it from theaters.
One of the most famous "special shoot" trailers is that used for the 1960s thriller Psycho, which featured director Alfred Hitchcock giving viewers a guided tour of the Bates Motel, eventually arriving at the infamous shower. At this point, the soft-spoken Hitchcock suddenly throws the shower curtain back to reveal Vera Miles with a blood-curdling scream. As the trailer, in fact, was made after completion of the film when Janet Leigh was no longer available for filming, Hitchcock had Miles don a blonde wig for the fleeting sequence. Since the title, "Psycho", instantly covers most of the screen, the switch went unnoticed by audiences for years until freeze-frame analysis clearly revealed that it was Vera Miles and not Janet Leigh in the shower during the trailer.
There are dozens of companies that specialize in the creation of film trailers in Los Angeles and New York. The trailer may be created at agencies (such as The Cimarron Group, MOJO, The Ant Farm, Ben Cain, Aspect Ratio, Flyer Entertainment, Trailer Park, Buddha Jones) while the film itself is being cut together at the studio. Since the edited film does not exist at this point, the trailer editors work from rushes or dailies. Thus, the trailer may contain footage that is not in the final movie, or the trailer editor and the film editor may use different takes of a particular shot. Another common technique is including music on the trailer which does not appear on the movie's soundtrack. This is nearly always a requirement, as trailers and teasers are created long before the composer has even been hired for the film score—sometimes as much as a year ahead of the movie's release date—while composers are usually the last creative people to work on the film.
Some trailers that incorporate material not in the film are particularly coveted by collectors, especially trailers for classic films. For example, in a trailer for Casablanca the character Rick Blaine says, "OK, you asked for it!" before shooting Major Strasser; this line of dialogue is not spoken in the final film.
Truth vs. misleading
Over the years, there have been many instances where trailers give misleading representations of their films. They may give the impression that a celebrity who only has a minor part in the film is one of the main cast members, or advertising a film as being more action-packed than it is. These tricks are usually done to draw in a larger audience. Sometimes the trailers include footage not from the film itself. This could be an artistic choice (as is the case with Pixar advertising), or because the trailer was put together before the film's final cut, but at other times it is to give the audience a different impression of the movie. Then trailers could be misleading in a 'for the audience's own good' kind of way, in that a general audience would not usually see such a film due to preconceptions, and by bait and switching, they can allow the audience to have a great viewing experience that they would not ordinarily have. However, the opposite is true too, with the promise of great trailers being let down by mediocre films. An American woman sued the makers of Drive because their film "failed to live up to its promo's promise".
Trailers tell the story of a film in a highly condensed fashion to have maximum appeal. In the decades since film marketing has become a large industry, trailers have become highly polished pieces of advertising, able to present even poor movies in an attractive light. Some of the elements common to many trailers are listed below. Trailers are typically made up of scenes from the film they are promoting, but sometimes contain deleted scenes from the film.
The key ambition in trailer-making is to impart an intriguing story that gets film audiences emotionally involved.
Most trailers have a three-act structure similar to a feature-length film. They start with a beginning (act 1) that lays out the premise of the story. The middle (act 2) drives the story further and usually ends with a dramatic climax. Act 3 usually features a strong piece of "signature music" (either a recognizable song or a powerful, sweeping orchestral piece). This last act often consists of a visual montage of powerful and emotional moments of the film and may also contain a cast run if there are noteworthy stars that could help sell the movie.
Voice-over narration is sometimes used to briefly set up the premise of the film and provide explanation when necessary. Since the trailer is a highly condensed format, voice-over is a useful tool to enhance the audience's understanding of the plot. Some of the best-known, modern-day trailer voice-over artists have been Don LaFontaine, Hal Douglas, Mark Elliot, John Leader, Corey Burton, George DelHoyo, Peter Cullen, Morgan Freeman, Ashton Smith, Jim Cummings, John Garry, Tom Kane, Ben Patrick Johnson, Tony Rodgers, Beau Weaver, and Brian Cummings. Classic voice-over artists in film trailers of the 1940s, 1950s and 1960s included Howard Strickling (for MGM), Lou Marcelle (for Warner Bros.), Art Gilmore, Knox Manning, Reed Hadley, Les Tremayne (for MGM), Fred Foy (for MGM), Karl Weber (for MGM) and Bob Marcato. Hollywood trailers of the classic film era were renowned for clichés such as "Colossal!", "Stupendous!", etc. Some trailers have used voice over clichés for satirical effect. This can be seen in trailers for films such as Jerry Seinfeld's Comedian and Tenacious D in The Pick of Destiny.
Music helps set the tone and mood of the trailer. Usually the music used in the trailer is not from the film itself (the film score may not have been composed yet). The music used in the trailer may be:
- Music from the score of other movies. Most-used titles include Requiem for a Dream's main theme "Lux Aeterna" by Clint Mansell, Come See the Paradise by Randy Edelman, Aliens by James Horner, Stargate by David Arnold, Bram Stoker's Dracula by Wojciech Kilar, The Life of David Gale by Alex Parker and Jake Parker, and Backdraft by Hans Zimmer.
- Popular or well-known music, often chosen for its tone, appropriateness of a lyric or lack thereof, or recognizability. The most often used of these is O Fortuna from Carmina Burana by Carl Orff, as well as the works of E.S. Posthumus and Beethoven. Popular music may be selected for its tone (i.e. hard rock for an action film, lighter pop for a romantic comedy), or to establish context (e.g. the trailer for a film set in the 1940s might use big band swing).
- "Library" music previously composed specifically to be used in advertising by an independent composer. There are many trailer music library companies which produce trailer music, some of the best known are Switch Music Group, Two Steps From Hell, Immediate Music and X-Ray Dog or SFX and Music libraries like the ones from Moss Landing, Gerrit Kinkel Productions or redCola.
- Specially composed music. One of the most famous Hollywood trailer music composers, credited with creating the musical voice of contemporary trailers, is John Beal, who began scoring trailers in the 1970s and, in the course of a thirty-year career, created original music for over 2,000 film trailer projects, including 40 of the top-grossing films of all time, such as Star Wars, Forrest Gump, Titanic, Aladdin, Braveheart, Ghost, The Last Samurai and The Matrix.
A cast run is a list of the stars that appear in the movie. If the director or producer is well-known or has made other popular movies, they often warrant a mention as well. Most trailers conclude with a billing block, which is a list of the principal cast and crew. It is the same list that appears on posters and print publicity materials, and also usually appears on-screen at the beginning (or end) of the movie. Studio production logos are usually featured near the beginning of the trailer. Until the late 1970s, they were put only at the end of the trailer. Often there will be logos for both the production company and distributor of the film.
Many trailers are mixed in Dolby Digital or any other multichannel sound mix. Scenes including sound effects and music that are enhanced by stereophonic sound are therefore the focus point of many modern trailers.
Trailers preceding feature films are generally presented in the same format as the feature, being either 35 mm film or a digital format. High bandwidth internet connections allow for trailers to be distributed online at any resolution. Since the advent of Digital 3‑D, it has become common for a 3‑D feature film to be preceded by one or more trailers that are also presented in 3‑D.
National Screen Service contracts required that trailers be returned (at the cinema's expense) or destroyed, however it required no proof of destruction and depositing them in a waste bin counted. A market for trailers evolved as it became clear that some had a commercial value to collectors. Many of the trailers for films like the Star Wars series reported as 'destroyed' were taken back out of the bin and sold by cinema staff. As they cost about $60 each to make (1981 estimate) and were hired to the cinema for $10, such losses led to NSS increasing its rental charges, which lead to a decrease in the number of trailers rented and shown to audiences.
Some cinemas also began to show "trailer trash" programmes of trailers without a main feature. Similarly, several DVDs containing nothing but trailers for films, typically from exploitation film genres, have been produced for sale.
Other types of trailers
Beginning in the late 1990s to early 2000s, and along with the development of the Internet and sites such as YouTube as well as animation techniques, more types of trailers began to be created due to easier and cheaper costs to produce and show trailers.
Video game trailers
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Beginning in the late 1990s to early 2000s, video game trailers began to be produced as they became more mainstream. Used to entice viewers to go out and play the game, game trailers are very useful. The content and production process is similar to that for movies, complicated by the need to convey the way the game plays. The trailer for Aliens: Colonial Marines, for example, featured graphics that were of a higher standard than the game that was eventually sold. Hideo Kojima, a game creator strongly influenced by Hollywood movies, edits the elaborate trailers for his own games from a special studio in his office.
TV show trailers
TV Spots are trailers for movies shown on Television that are usually shortened from regularly 2 minutes to 30 seconds. These trailers are similar to green band trailers and have content "appropriate" for the channel.
TV Show Trailers are trailers advertising a new episode/event or marathon premiering on television.
A book trailer is a video advertisement for a book which employs techniques similar to those of movie trailers to promote books and encourage readers. These trailers can also be referred to as "video-podcasts", with higher quality trailers being called "cinematic book trailers". They are circulated on television and online in most common digital video formats. Common formats of book trailers include actors performing scenes from the book akin to a movie trailer, full production trailers, flash videos, animation or simple still photos set to music with text conveying the story. This differs from author readings and interviews, which consist of video footage of the author narrating a portion of their writing or being interviewed. Early book trailers consisted mostly of still images of the book, with some videos incorporating actors, with John Farris's book trailer for his 1986 novel Wildwood incorporating images from the book cover along with actors such as John Zacherle.
In September 2007, the School Library Journal established the Trailie Award for the best book trailers. There are three categories: author/publisher created, student created and librarian/adult created. The award was announced at the School Library Journal Leadership Summit on the Future of Reading on October 22, 2010 in Chicago.
In 2014, Dan Rosen and CV Herst established BookReels, a website dedicated to allowing publishers and authors to post book trailers and other multimedia, culminating in the annual BookReels Awards. BookReels lets readers browse and rate trailers, post comments and reviews, join discussion groups, and share BookReel discoveries.
Concert event trailers/promos
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MPAA rating cards for theatrical trailers 
The Motion Picture Association of America (MPAA) mandates that theatrical trailers be no longer than two minutes and thirty seconds. Each major studio[clarification needed] is given one exception to this rule per year. There are no time restrictions concerning Internet or home-video trailers. Rating cards appear at the head of trailers in the United States which indicate how closely the trailer adheres to the MPAA's standards.
A green band is an all-green graphic at the beginning of the trailer. Until April 2009, these cards indicated that they had been approved for "all audiences" and often included the movie's MPAA rating. This signified that the trailer adheres to the standards for motion picture advertising outlined by the MPAA, which include limitations on foul language and violent, sexual, or otherwise objectionable imagery. In April 2009, the MPAA began to permit the green band language to say that a trailer had been approved for "appropriate" audiences, meaning that the material would be appropriate for audiences in theaters, based on the content of the film they had come to see. In May 2013, the MPAA changed the trailer approval band from "for appropriate audiences" to "to accompany this feature" but only when accompanying a feature film; for bands not accompanying a feature film the text of the band remained the same. The font and style of the text on the graphic bands (green and red) was changed as well at the time the green band was revised in 2013.
Trailers that do not adhere to these guidelines may be issued a red band, which indicates approval for only "restricted" or "mature" audiences. These trailers may only be shown before R-rated, NC-17-rated, unrated movies (only films that are released in theaters rated R and not in theaters[clarification needed] rated PG-13). These trailers may include nudity, profanity or other material deemed inappropriate for children.
Additionally, 'yellow band' trailers were introduced in approximately 2007 to indicate restricted content, only for distribution on the internet. This practice, while official, appears to have never been widespread (though occasional yellow band trailers are created). A notable example is the yellow band trailer for Rob Zombie's Halloween movie.
Every year there are two main events that give awards to outstanding film trailers: The Key Art Awards, presented by the Hollywood Reporter, and The Golden Trailer Awards. Golden Trailer Awards and the Key Art Awards pick winners in all creative parts of film advertising, from trailers and TV spots to posters and print ads. The Golden Trailer Awards are currently expanding to add a sister event, The World Trailer Awards, to be a kickoff to the Cannes Film Festival in France, 2013. The yearly Key Art Awards ceremony is often held at the Kodak Theater in Hollywood. The Film Informant also recognizes movie marketing media and held the first annual TFI Awards in early January 2012. The site is the first to officially start recognizing and rating movie marketing media on a daily basis.
- Golden Trailer Awards
- Re-cut trailer
- Snipe (theatrical)
- Stinger (post-credits scene)
- Teaser trailer
- Trailer music
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