Coordinates | 38°37′38″N90°11′52″N |
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company name | YouTube, LLC |
company slogan | Broadcast Yourself |
owner | Independent (2005–2006)Google Inc. (2006–present) |
company logo | |
company type | Subsidiary,limited liability company |
foundation | February 14, 2005 |
founder | Steve Chen Chad HurleyJawed Karim |
area served | Worldwide |
location city | 901 Cherry Ave,San Bruno, California |
location country | |
key people | Salar Kamangar, CEOChad Hurley, Advisor |
screenshot | |
url | (see list of localized domain names) |
registration | Optional (Only required for certaintasks such as viewing flagged videos,viewing flagged comments anduploading videos) |
launch date | |
current status | Active |
language | 34 languages available through user interface |
advertising | Google AdSense |
alexa | 3 () |
website type | video hosting service }} |
YouTube is a video-sharing website, created by three former PayPal employees in February of 2005, on which users can upload, share and view videos.
The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5 technology to display a wide variety of user-generated video content, including movie clips, TV clips, and music videos, as well as amateur content such as video blogging and short original videos. Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, BBC, VEVO, Hulu, and other organizations offer some of their material via the site, as part of the YouTube partnership program.
Unregistered users may watch videos, and registered users may upload an unlimited number of videos. Videos that are considered to contain potentially offensive content are available only to registered users 18 years old and older. In November 2006, YouTube, LLC was bought by Google Inc. for US$1.65 billion, and now operates as a subsidiary of Google.
According to a story that has often been repeated in the media, Hurley and Chen developed the idea for YouTube during the early months of 2005, after they had experienced difficulty sharing videos that had been shot at a dinner party at Chen's apartment in San Francisco. Karim did not attend the party and denied that it had occurred, while Hurley commented that the idea that YouTube was founded after a dinner party "was probably very strengthened by marketing ideas around creating a story that was very digestible".
YouTube began as a venture-funded technology startup, primarily from a $11.5 million investment by Sequoia Capital between November 2005 and April 2006. YouTube's early headquarters were situated above a pizzeria and Japanese restaurant in San Mateo, California. The domain name www.youtube.com
was activated on February 14, 2005, and the website was developed over the subsequent months.
The first YouTube video was entitled ''Me at the zoo'', and shows founder Karim at the San Diego Zoo. The video was uploaded on April 23, 2005, and can still be viewed on the site.
YouTube offered the public a beta test of the site in May 2005, six months before the official launch in November 2005. The site grew rapidly, and in July 2006 the company announced that more than 65,000 new videos were being uploaded every day, and that the site was receiving 100 million video views per day. According to data published by market research company comScore, YouTube is the dominant provider of online video in the United States, with a market share of around 43 percent and more than 14 billion videos viewed in May 2010. YouTube says that over 48 hours of new videos are uploaded to the site every minute, and that around three quarters of the material comes from outside the US. It is estimated that in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000. Alexa ranks YouTube as the third most visited website on the Internet, behind Google and Facebook.
The choice of the name www.youtube.com
led to problems for a similarly named website, www.utube.com
. The owner of the site, Universal Tube & Rollform Equipment, filed a lawsuit against YouTube in November 2006 after being overloaded on a regular basis by people looking for YouTube. Universal Tube has since changed the name of its website to www.utubeonline.com
. In October 2006, Google Inc. announced that it had acquired YouTube for $1.65 billion in Google stock, and the deal was finalized on November 13, 2006. Google does not provide detailed figures for YouTube's running costs, and YouTube's revenues in 2007 were noted as "not material" in a regulatory filing. In June 2008, a ''Forbes'' magazine article projected the 2008 revenue at $200 million, noting progress in advertising sales.
In November 2008, YouTube reached an agreement with MGM, Lions Gate Entertainment, and CBS, allowing the companies to post full-length films and television episodes on the site, accompanied by advertisements in a section for US viewers called "Shows". The move was intended to create competition with websites such as Hulu, which features material from NBC, Fox, and Disney. In November 2009, YouTube launched a version of "Shows" available to UK viewers, offering around 4,000 full-length shows from more than 60 partners. In January 2010, YouTube introduced an online film rentals service, which is currently available only to users in the US. The service offers over 6,000 films.
In March 2010, YouTube began free streaming of certain content, including 60 cricket matches of the Indian Premier League. According to YouTube, this was the first worldwide free online broadcast of a major sporting event.
On March 31, 2010, the YouTube website launched a new design, with the aim of simplifying the interface and increasing the time users spend on the site. Google product manager Shiva Rajaraman commented: "We really felt like we needed to step back and remove the clutter." In May 2010, it was reported that YouTube was serving more than two billion videos a day, which it described as "nearly double the prime-time audience of all three major US television networks combined". In May 2011, YouTube reported in its company blog that the site was receiving more than three billion views per day.
In October 2010, Hurley announced that he would be stepping down as chief executive officer of YouTube to take an advisory role, and that Salar Kamangar would take over as head of the company.
In April 2011, James Zern, a YouTube software engineer, revealed that 30 percent of videos accounted for 99 percent of views on the site.
In January 2010, YouTube launched an experimental version of the site that uses the built-in multimedia capabilities of web browsers supporting the HTML5 standard. This allows videos to be viewed without requiring Adobe Flash Player or any other plug-in to be installed. The YouTube site has a page that allows supported browsers to opt in to the HTML5 trial. Only browsers that support HTML5 Video using the H.264 or WebM formats can play the videos, and not all videos on the site are available.
YouTube videos are available in a range of quality levels. The former names of standard quality (SQ), high quality (HQ) and high definition (HD) have been replaced by numerical values representing the vertical resolution of the video. The default video stream is encoded in H.264/MPEG-4 AVC format, with stereo AAC audio.
+Comparison of YouTube media encoding options | |||||||||||||
colspan="2" style="text-align:left;" | fmt value< | !! 5 !! 34 !! 35 !! 18 !! 22 !! 37 !! 38 !! 43 !! 44 | 45 !17 | ||||||||||
FLV | colspan="4">MP4| | WebM | 3GP | ||||||||||
rowspan="5" style="background:#f2f2f2; text-align:left;" | Video | style="background:#f2f2f2; text-align:left;"Encoding || | Sorenson H.263 | MPEG-4 AVC (H.264) | VP8 | MPEG-4 Visual | |||||||
style="background:#f2f2f2; text-align:left;" | Profile | –| | Main | Baseline | High | – | – | ||||||
style="background:#f2f2f2; text-align:left;" | Max width (pixels) | 400| | 640 | 854 | 640 | 1280 | 1920 | 4096 | 640 | 854 | 1280 | 176 | |
style="background:#f2f2f2; text-align:left;" | Max height (pixels) | 240| | 360 | 480 | 360 | 720 | 1080 | 3072 | 360 | 480 | 720 | 144 | |
style="background:#f2f2f2; text-align:left;" | Bitrate (Mbit/s) | 0.25| | 0.5 | 0.8–1.0 | 0.5 | 2.0–2.9 | 3.5–5.0 | – | 0.5 | 1 | 2 | – | |
rowspan="4" style="background:#f2f2f2; text-align:left;" | Audio | style="background:#f2f2f2; text-align:left;"Encoding || | MP3 | AAC | Vorbis | AAC | |||||||
style="background:#f2f2f2; text-align:left;" | Channels | ||||||||||||
style="background:#f2f2f2; text-align:left;" | Sampling rate (Hz) | ||||||||||||
style="background:#f2f2f2; text-align:left;" | Bitrate (kbit/s) | 64| | 128 | 96 | 152 | 128 | 192 | – |
YouTube does not usually offer a download link for its videos, and intends for them to be viewed through its website interface. A small number of videos, such as the weekly addresses by President Barack Obama, can be downloaded as MP4 files. Numerous third-party web sites, applications and browser plug-ins allow users to download YouTube videos. In February 2009, YouTube announced a test service, allowing some partners to offer video downloads for free or for a fee paid through Google Checkout.
Since June 2007, YouTube's videos have been available for viewing on a range of Apple products. This required YouTube's content to be transcoded into Apple's preferred video standard, H.264, a process that took several months. YouTube videos can be viewed on devices including Apple TV, iPod Touch and the iPhone. A TiVo service update in July 2008 allowed the system to search and play YouTube videos. In January 2009, YouTube launched "YouTube for TV", a version of the website tailored for set-top boxes and other TV-based media devices with web browsers, initially allowing its videos to be viewed on the PlayStation 3 and Wii video game consoles. In June 2009, YouTube XL was introduced, which has a simplified interface designed for viewing on a standard television screen.
! Country | ! Language | ! Launch date |
Spanish language | ||
(Taiwan) | ||
[[Canadian English | ||
[[South Korea | ||
Indian English | ||
Spanish | ||
Arabic | ||
Arabic | ||
Arabic | ||
Arabic | ||
Arabic | ||
Arabic |
The YouTube interface suggests which local version should be chosen on the basis of the [[IP address of the user. In some cases, the message "This video is not available in your country" may appear because of copyright restrictions or inappropriate content.
The interface of the YouTube website is available in 30 different languages, including Catalan, Danish, Finnish, Greek, Hungarian, Norwegian and Slovene, which do not have local channel versions.
Plans for YouTube to create a local version in Turkey have run into problems, since the Turkish authorities asked YouTube to set up an office in Turkey, which would be subject to Turkish law. YouTube says that it has no intention of doing this, and that its videos are not subject to Turkish law. Turkish authorities have expressed concerns that YouTube has been used to post videos insulting to Mustafa Kemal Atatürk and some material offensive to Muslims.
In March 2009, a dispute between YouTube and the British royalty collection agency PRS for Music led to premium music videos being blocked for YouTube users in the United Kingdom. The removal of videos posted by the major record companies occurred after failure to reach agreement on a licensing deal. The dispute was resolved in September 2009. In April 2009, a similar dispute led to the removal of premium music videos for users in Germany.
Some schools have blocked access to YouTube, citing the inability to determine what sort of video material might be accessed by students.
YouTube was awarded a 2008 Peabody Award and cited for being "a 'Speakers' Corner' that both embodies and promotes democracy".
''Entertainment Weekly'' put it on its end-of-the-decade "best-of" list. It said: "Providing a safe home for piano-playing cats, celeb goof-ups, and overzealous lip-synchers since 2005."
An early example of the social impact of YouTube was the success of The Bus Uncle video in 2006. It shows a heated conversation between a youth and an older man on a bus in Hong Kong, and was discussed widely in the mainstream media. Another YouTube video to receive extensive coverage is ''guitar'', which features a performance of Pachelbel's Canon on an electric guitar. The name of the performer is not given in the video. After it received millions of views ''The New York Times'' revealed the identity of the guitarist as Lim Jeong-hyun, a 23-year-old from South Korea who had recorded the track in his bedroom.
''Charlie Bit My Finger'', which was uploaded on May 22, 2007, is a viral video that has received the most views of any user generated YouTube video, with over 300 million views. The clip features two English brothers, with one-year-old Charlie biting the finger of his brother Harry, aged three. In ''Time'''s list of YouTube's 50 greatest viral videos of all time, "Charlie Bit My Finger" was ranked at number one.
Organizations including Viacom, Mediaset, and the English Premier League have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material. Viacom, demanding $1 billion in damages, said that it had found more than 150,000 unauthorized clips of its material on YouTube that had been viewed "an astounding 1.5 billion times". YouTube responded by stating that it "goes far beyond its legal obligations in assisting content owners to protect their works". Since Viacom filed its lawsuit, YouTube has introduced a system called Video ID, which checks uploaded videos against a database of copyrighted content with the aim of reducing violations. In June 2010, Viacom's lawsuit against Google was rejected in a summary judgment, with U.S. federal Judge Louis L. Stanton stating that Google was protected by provisions of the Digital Millennium Copyright Act. Viacom announced its intention to appeal the ruling.
In August 2008, a US court ruled in ''Lenz v. Universal Music Corp.'' that copyright holders cannot order the removal of an online file without first determining whether the posting reflected fair use of the material. The case involved Stephanie Lenz from Gallitzin, Pennsylvania, who had made a home video of her 13-month-old son dancing to Prince's song "Let's Go Crazy", and posted the 29-second video on YouTube.
YouTube relies on its users to flag the content of videos as inappropriate, and a YouTube employee will view a flagged video to determine whether it violates the site's terms of service. However, this procedure has been criticized by the United Kingdom government. In July 2008, the Culture and Media Committee of the House of Commons of the United Kingdom stated that it was "unimpressed" with YouTube's system for policing its videos, and argued that "Proactive review of content should be standard practice for sites hosting user-generated content". YouTube responded by stating:
We have strict rules on what's allowed, and a system that enables anyone who sees inappropriate content to report it to our 24/7 review team and have it dealt with promptly. We educate our community on the rules and include a direct link from every YouTube page to make this process as easy as possible for our users. Given the volume of content uploaded on our site, we think this is by far the most effective way to make sure that the tiny minority of videos that break the rules come down quickly.
In October 2010, U.S. Congressman Anthony Weiner urged YouTube to take down from its website videos of imam Anwar al-Awlaki, tied to the accused Fort Hood shooter, Christmas Day bomber, and attempted Times Square bomber, and on the U.S. targeted killing list, saying that by hosting al-Awlaki's messages, "We are facilitating the recruitment of homegrown terror". British security minister Pauline Neville-Jones commented: "These Web sites would categorically not be allowed in the U.K. They incite cold-blooded murder, and as such are surely contrary to the public good." In November 2010, YouTube removed from its site some of the hundreds of videos featuring al-Awlaki's calls to ''jihad''. It stated that it had removed videos that violated the site’s guidelines prohibiting "dangerous or illegal activities such as bomb-making, hate speech and incitement to commit violent acts", or came from accounts "registered by a member of a designated foreign terrorist organization". In December 2010, YouTube added "promotes terrorism" to the list of reasons that users can give when flagging a video as inappropriate.
Juvenile, aggressive, misspelled, sexist, homophobic, swinging from raging at the contents of a video to providing a pointlessly detailed description followed by a LOL, YouTube comments are a hotbed of infantile debate and unashamed ignorance – with the occasional burst of wit shining through.In September 2008, ''The Daily Telegraph'' commented that YouTube was "notorious" for "some of the most confrontational and ill-formed comment exchanges on the internet", and reported on YouTube Comment Snob, "a new piece of software that blocks rude and illiterate posts".
This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
Coordinates | 38°37′38″N90°11′52″N |
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name | The 100: A Ranking of the Most Influential Persons in History |
followed by | }} |
''The 100: A Ranking of the Most Influential Persons in History'' is a 1978 book by Michael H. Hart, reprinted in 1992 with revisions. It is a ranking of the 100 people who, according to Hart, most influenced human history.
The first person on Hart's list is the Islamic Prophet Muhammad. Hart asserted that Muhammad was "supremely successful" in both the religious and secular realms. He also believed that Muhammad's role in the development of Islam was far more influential than Jesus' collaboration in the development of Christianity. He attributes the development of Christianity to St. Paul, who played a pivotal role in its dissemination.
The 1992 revisions included the demotion of figures associated with Communism, such as Vladimir Lenin and Mao Zedong, and the introduction of Mikhail Gorbachev. Hart took sides in the Shakespearean authorship issue and substituted Edward de Vere, 17th Earl of Oxford for William Shakespeare. Hart also substituted Niels Bohr and Henri Becquerel with Ernest Rutherford, thus correcting an error in the first edition. Henry Ford was also promoted from the "Honorary Mentions" list, replacing Pablo Picasso. Finally, some of the rankings were re-ordered, although no one listed in the top ten changed position.
Hart wrote another book in 1999, entitled ''A View from the Year 3000'', voiced in the perspective of a person from that future year and ranking the most influential people in history. Roughly half of those entries are fictional people from 2000–3000, but the remainder are actual people. These were taken mostly from the 1992 edition, with some re-ranking of order.
Category:1978 books Category:20th-century history books Category:History books about people Category:Top people lists
ar:الخالدون المئة (كتاب) ca:Els 100, un rànquing de les persones més influents en la història de:Die 100 es:Los 100 fa:صد (کتاب) id:The 100 (buku) lt:100 įtakingiausių asmenybių pasaulio istorijoje hu:100 híres ember ml:ദ ഹൻഡ്രഡ് (ഗ്രന്ഥം) ms:100 (buku) nl:The 100 pl:100 postaci, które miały największy wpływ na dzieje ludzkości pt:As 100 Maiores Personalidades da História ru:The 100 fi:Ihmiskunnan 100 suurinta zh:影响人类历史进程的100名人排行榜This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
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