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A video mashup (also written as video mash-up) combines multiple pre-existing "video sources with no discernible relation with each other into a unified video. These are "derivative works as defined by the United States Copyright Act "17 U.S.C. § 101, and as such, may find protection from "copyright claims under the doctrine of "fair use. Examples of mashup videos include "movie trailer "remixes, "vids, "YouTube Poop, Wishfie Reaction Videos, and "supercuts.
These two types of music video mashup are usually edited to match the rhythm of the song, and seeking to show a particular aesthetic style.And towards to a celebrative communication.
The last two types are typical use-generated contents in the age of Web2.0,which reflects the more participation in mashup or remix culture.["citation needed]
Political video mashups are a primary example of citizen-generated content. These mashups allow the creator to form new meanings by juxtaposing two pieces of original source material, for example, someone may take footage of a politician's speech and 'mash it up' with footage from a popular reality television show. This form of mashup, according to Richard L. Edwards and Chuck Tryon, can be accepted as allegories of citizen empowerment. According to their article 'Political Video Mashups as Allegories of Citizen Empowerment', the videos are empowering because the users become more literate with online and offline information they receive daily; they become more active when it comes to interpreting meaning and also realising how a speech may have been manipulated.
Online videos such as political mashups are starting to take on a serious role within the politics of the United States of America. In the 2008 elections (often referred to as the 'YouTube elections') more than 40% of voters watched video content relating to the elections online. Now that the internet is so widely accessible it enables the user to make and find digestible content; political mashup videos can make a serious speech more humorous, accessible and understandable. However, because anybody can create these mashups, it is important to remember that the original meaning could have been violated. Edwards and Tryon mention that parody has become the most important form of critical intertextuality. Often, the creator of a political mashup will completely flip the meaning in order to make it funny, some mashup artists choose to make an entirely manufactured meaning from source material. Notable examples of political mashup videos and artists can be found below.
Trailer mashups also known as recut trailers, involve collecting multiple pieces of film footage from one or multiple movies and editing them to create a new trailer. Trailer mashups are often created for a movie that does not exist or to change the genre of an existing film. Trailer mashups existence and popularity can be credited to convergence culture and the Web 2.0 infrastructure, allowing films to be easily accessed and shared online on video sharing websites such as YouTube.
Film has long been a read-only medium, it was only meant to be watched. With the expansion of YouTube and other video sharing websites over the years it has allowed film to be transformed into a read-write form of media. Digital files can now be accessed, edited and uploaded onto the internet. Free editing software is widely accessible so anyone with access to digital movie files can create a trailer mashup.
The trailer mashups are not only a user generated form of digital creativity but a way to create anticipation for future releases, working in tandem with current movie trailers. Movie trailers are designed to give minimal plot detail and to create hype and anticipation. Fan made trailer mashups allow the audience to perform their own cinematic spin on current movie footage. This allows the trailer to focus on a specific actor or portion of the film. It could even change the plot or genre of the film entirely. The user generated trailer mashup allows for the creator disregard advertising and promotion paths.
The term "supercut was first created by "Andy Baio. Also known as supercut video mashups, they focus on the phrases and devices that are repeated in movies and TV and repeat them in a comic effect. The video content adds context to these clichés, and presents them in a new light, or inspire a moratorium on them.["citation needed]
The supercut first appeared a year after YouTube was created. In 2006, an audience that would turn out to grow to more than six million watched CSI: Miami’s David Caruso don a pair of sunglasses after making a glib remark about a victim. In the video Caruso keeps doing that same action for seven minutes. The clip was perhaps the most prominent supercut before the term was even invented, and that was not by accident. It was because of the way the creator edited away to the screaming finale of the opening credits in between each iteration, establishing a jokey rhythm and a perennial callback. Details like these are key in the supercut genre.
According to Eduardo Navas, web application mashups is a type of Regenerative Remix that developed with an interest to extend the functionality of software for specific purposes. Usually combinations of pre-existing sources brought together.The emergence of the web application mashups is for practical purposes. However, Navas recognizes that the reflexive mashups also can be used for entertainment and the most typical example is "Vine.["citation needed]
Vine is the most used video app in the market, which for creating 6-second looping videos, prioritizes the visual. To better understand the creative capabilities of Vine’s limitations, we analyze its formal elements. The interface centers on a timeline: the video recording begins as the user touches the screen of their mobile device, and the recording takes place only so long as they’re touching the screen. Given this touch-and-hold interface, there’s no post-production editing: edits can be made by letting go of the touch before the end of the six seconds, framing a new shot, and then touching again to capture the next image in the montage.
A precedent for video mashups can be discovered in the montage films of Eisenstein.
"Cassetteboy - Their videos mainly focus on comedy, but many have a political message within them. For example, Cameron’s Conference Rap (which uses clips of David Cameron set to the beat of "Eminem’s Lose Yourself), Cassetteboy vs Nick Griffin vs Question Time and Cassetteboy vs The News. However, not all have such a strong political emphasis. In an interview, Mike (one of the two people behind the channel) talks about how mash-up is an accessible practice, saying “It’s not an easy thing to do, but you don’t need very much to do it. You don’t need a camera or a microphone. You just need some footage and these days we’re drowning in digital content.”
"YouTube Rewind - YouTube Rewind is a yearly video series produced and released by YouTube, starting in 2010. It is a mash-up of various videos that went viral on the website in the previous year. The series started by simply placing clips of the videos next to one another in a countdown style, but then changed to a mash-up of both video and music, using YouTube stars to reference the videos. It does not have a political or informative stance, but rather one that is celebratory of the website and the people who are active on it.
What’s the Mashup? - What’s the Mashup? is a YouTube channel run by a Parisian man named Julien. The channel is another one that uses mash-up in a comedic way, often using clips from two different pop culture texts (such as TV and film) and mashing them into one narrative. He says that mash-up videos appeal when they use something that everyone is familiar with, hence his choice to focus on pop culture. Unlike many other mash-up artists, he edits his videos in such a way that they don’t appear to be separate narratives, but rather one continuous story.
aMashup videos are increasingly popular online. When the mashup creators remix two or more videos or music from various sources e.g. TV, film, music etc., they may not be aware of the copyright of the original source. Without the permission of copyright owner, mashup video artists may violate the copyright law and charged by criminal copyright infringement. If they violate the law, their videos will be forced to take down on YouTube. YouTube can ban their accounts and they are forbidden to post anything online. In a more serious case, the copyright owners reserve their rights to sue the mashup artists and they may have a maximum punishment of five years in jail and large fines. It is an obstacle that hinders mashup artists to develop mashup video more. The original copyright law is written in 1980s or even earlier and it did not include the possibilities of copyright infringement exist in digital era. Therefore, mashup artists and public suggests a reform of copyright law regarding on remix culture and mashup videos in order to give more freedom for mashup artists to create their work.
In the United States, the Copyright Act of 1976 acts as the basis of copyright law to protect the rights of the original creators. It protects the original works of authorship. To some extent, it allows artists to reproduce the work and create derivative works of the original work.
Fair use is a limitation and exception to the copyright law. According to the "Hofstra Law Review, “If mashup artists could prove that they use others’ songs or clips to criticize, comment, or teach, then mashup artists might be able to use the copyrighted material without authorization." 
Courts in the United States balance four factors when considering fair use:
In 2012, video mashup artist "Jonathan McIntosh spoke before the "United States Copyright Office to advocate for exemptions to the "Digital Millennium Copyright Act. The "final rulemaking stated an exemption for: "Motion pictures (including television shows and videos), as defined in 17 U.S.C. 101, where circumvention is undertaken solely in order to make use of short portions of the motion pictures for the purpose of criticism or comment in limited instances."
Starting from Wednesday 1 October 2014, the new EU law becomes effective in the United Kingdom. There is an amendment to the Copyright, Design and Patents Act 1988. It is now legal for people to use “limited amount” of copyrighted material in online video for the purposes of “parody, caricature or pastiche” without the consent of the copyright holder, only if their work do not convey a discriminatory message, or compete with the original. A judge will decide whether the video is funny enough to classify as a parody and if it violates the law.
Although the mashup video is now legal in practice, it does not affect YouTube’s terms of service. The most famous example in Britain is the Cassetteboy. Cassetteboy’s videos can be shown on TV channels now but sometimes YouTube can take down their videos if they violate the copyright of the music or clips in their videos.