YouTube - Wikipedia, the free encyclopedia - The Diigo Meta page

• 15 Apr 15
  

  fmastakas
  • three former PayPal employees in February 2005
  • Google
  • use of Adobe Flash Video and HTML5 technology
  • after they had experienced difficulty sharing videos that had been shot at a dinner party at Chen's apartment in San Francisco
  • venture-funded technology startup
  • In January 2012, it was estimated that visitors to YouTube spent an average of 15 minutes a day on the site, in contrast to the four or five hours a day spent by a typical U.S. citizen watching television
  • 30% of videos accounted for 99% of views on the site
  • $0.99 per month or more for certain channels
  • YouTube Kids
  • 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
  • On January 27, 2015, YouTube announced that HTML5 will be the default playback method on supported browsers
  • adaptive bit-rate HTTP-based streaming solution optimizing the bitrate and quality
  • MPEG-DASH
  • videos up to 15 minutes each in duration
  • Community Guidelines
  • standard quality (SQ), high quality (HQ) and high definition (HD)
  • 1–1.5
  • 2.5–3

  16 more annotations...

• 03 Mar 15
  

  skylarknight
• 19 Feb 15
  

  dj_darron

  "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, but Chen 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".[9]
  
  Karim said the inspiration for YouTube first came from Janet Jackson's role in the 2004 Super Bowl incident, when her breast was exposed during her performance, and later from the 2004 Indian Ocean tsunami. Karim could not easily find video clips of either event online, which led to the idea of a video sharing site.[10] Hurley and Chen said that the original idea for YouTube was a video version of an online dating service, and had been influenced by the website Hot or Not.[11][12]"

  OC YouTube

  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005. In November 2006, it was bought by Google for US$1.65 billion.^[4] YouTube now operates as one of Google's subsidiaries.^[5] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.

  • 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, but Chen 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".^[9]

     

    Karim said the inspiration for YouTube first came from Janet Jackson's role in the 2004 Super Bowl incident, when her breast was exposed during her performance, and later from the 2004 Indian Ocean tsunami. Karim could not easily find video clips of either event online, which led to the idea of a video sharing site.^[10] Hurley and Chen said that the original idea for YouTube was a video version of an online dating service, and had been influenced by the website Hot or Not.^[11][12]
  • YouTube was founded by Chad Hurley, Steve Chen, and Jawed Karim, who were all early employees of PayPal.^[7] Hurley had studied design at Indiana University of Pennsylvania, and Chen and Karim studied computer science together at the University of Illinois at Urbana-Champaign.^[8]
  •  

     

     

     

     From left to right: Chad Hurley, Steve Chen, and Jawed Karim

     

     

     
  • Facebook

  • Quality and formats

     

    YouTube originally offered videos at only one quality level, displayed at a resolution of 320x240 pixels using the Sorenson Spark codec (a variant of H.263),^[68][69] with mono MP3 audio.^[70] In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones.^[71] In March 2008, a high quality mode was added, which increased the resolution to 480x360 pixels.^[72]

     

    In November 2008, 720p HD support was added. At the time of the 720p launch, the YouTube player was changed from a 4:3 aspect ratio to a widescreen 16:9.^[73] With this new feature, YouTube began a switchover to H.264/MPEG-4 AVC as its default video compression format. In November 2009, 1080p HD support was added. In July 2010, YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096x3072 pixels.^[74][75] YouTube has since lowered the maximum resolution to 3840x2160 pixels, which is twice as many pixels in both directions as 1080p.^[76]

     

    In June 2014, YouTube introduced videos playing at 60 frames per second, in order to reproduce video games with a frame rate comparable to high-end graphics cards.^[77][78] The videos play back at a resolution of 720p or higher.^[79]
  • YouTube offers users the ability to view its videos on web pages outside their website. Each YouTube video is accompanied by a piece of HTML that can be used to embed it on any page on the Web.^[91] This functionality is often used to embed YouTube videos in social networking pages and blogs. Users wishing to post a video discussing, inspired by or related to another user's video are able to make a "video response". On August 27, 2013, YouTube announced that it would remove video responses for being an underused feature.^[92] Embedding, rating, commenting and response posting can be disabled by the video owner.^[93]

  • Platforms

     

    Most modern smartphones are capable of accessing YouTube videos, either within an application or through an optimized website. YouTube Mobile was launched in June 2007, using RTSP streaming for the video.^[101] Not all of YouTube's videos are available on the mobile version of the site.^[102]

     

    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.^[103] In July 2010, the mobile version of the site was relaunched based on HTML5, avoiding the need to use Adobe Flash Player and optimized for use with touch screen controls.^[104] The mobile version is also available as an app for the Android platform.^[105][106] In September 2012, YouTube launched its first app for the iPhone, following the decision to drop YouTube as one of the preloaded apps in the iPhone 5 and iOS 6 operating system.^[107] According to GlobalWebIndex, YouTube was used by 35% of smartphone users between April and June 2013, making it the third most used app.^[108]

  6 more annotations...

• 

  farradel
  • headquartered in San Bruno, California.
  • Founded February 14, 2005; 10 years ago
  • In October 2006, Google Inc. announced that it had acquired YouTube for $1.65 billion in Google stock

  1 more annotation...

• 04 Feb 15
  

  batuj973

  YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005. In November 2006, it was bought by Google for US$1.65 billion.[4] YouTube now operates as a Google subsidiary.[5] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.
  
  Most of the content on YouTube has been uploaded by individuals, but media corporations including CBS, the BBC, Vevo, Hulu, and other organizations offer some of their material via YouTube, as part of the YouTube partnership program.[6] Unregistered users can watch videos, and registered users can upload videos to their channels. Videos considered to contain potentially offensive content are available only to registered users affirming themselves to be at least 18 years old.
  
  

  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005. In November 2006, it was bought by Google for US$1.65 billion.^[4] YouTube now operates as a Google subsidiary.^[5] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.

     

    Most of the content on YouTube has been uploaded by individuals, but media corporations including CBS, the BBC, Vevo, Hulu, and other organizations offer some of their material via YouTube, as part of the YouTube partnership program.^[6] Unregistered users can watch videos, and registered users can upload videos to their channels. Videos considered to contain potentially offensive content are available only to registered users affirming themselves to be at least 18 years old.

     

     

     

     
• 01 Jan 15
  

  findmaisie
  • upload videos to their channels
  • YouTube offers users the ability to view its videos on web pages outside their website.
  • functionality

  1 more annotation...

• 09 Dec 14
  

  pietrowski
  • YouTube is a video-sharing website headquartered in San Bruno, California
• 06 Nov 14
  

  Chelsea Alves

  youtube chelsea wikipedia history

• 05 Nov 14
  

  zhao_victoria

  Youtube

  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.
• 

  aseptianto
  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.
• 

  sokwokfung

  youtube

  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.
  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.
• 

  lucychou
  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.
• 

  myfungfung

  youtube

  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and other content such as video blogging, short original videos, and educational videos.

     

    Most of the content on YouTube has been uploaded by individuals, but media corporations including CBS, the BBC, Vevo, Hulu, and other organizations offer some of their material via YouTube, as part of the YouTube partnership program.^[5] Unregistered users can watch videos, and registered users can upload videos to their channels. Videos considered to contain potentially offensive content are available only to registered users affirming themselves to be at least 18 years old. YouTube, LLC was bought by Google for US$1.65 billion in November 2006 and now operates as a Google subsidiary.^[6]
• 20 Sep 14
  
  • The default video stream is encoded in H.264/MPEG-4 AVC format, with stereo AAC audio.^[
• 06 Aug 14
  

  ralawami

  YOUTUBE PARTNERSHIP PROGRAM 
  

  im-tutorial-socialmedia

• 30 Jul 14
  

  bblair9
  • YouTube is a video-sharing website
  • rtered in San Bruno, California. The service was
• 25 Jul 14
  

  sherod brown
  • YouTube is a video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees in February 2005 and has been owned by Google since late 2006.^[4] The site allows users to upload, view, and share videos, and it makes use of Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video. Available content includes video clips, TV clips, music videos, and amateur content such as video blogging, short original videos, and educational videos.
• 29 Apr 14
  

  charryan2005
• 10 Apr 14
  

  heduquaine

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005 and owned by Google since late 2006, on which users can upload, view and share videos.^[4] The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5 technology to display a wide variety of user-generated and corporate media video content, including video clips, TV clips, and music videos, and amateur content such as video blogging, short original videos, and educational videos.

     

    Most of the content on YouTube has been uploaded by individuals, but media corporations including CBS, the BBC, Vevo, Hulu, and other organizations offer some of their material via YouTube, as part of the YouTube partnership program.^[5] Unregistered users can watch videos, and registered users can upload an unlimited number of videos. Videos considered to contain potentially offensive content are available only to registered users affirming themselves to be at least 18 years old. YouTube, LLC was bought by Google for US$1.65 billion in November 2006 and now operates as a Google subsidiary.^[6]
• 

  ciddare
• 03 Apr 14
  

  Trevor Dunn

  youtube trevordunn rm04bps information

• 

  Pauli Haarnimo

  Unsorted Bookmarks

• 10 Feb 14
  

  Angelique Clark

  youtube wikipedia technology music public encyclopedia Group2B www_world

• 23 Nov 13
  

  Armando Gamonal Horna
• 20 Oct 13
  

  andrewjhanson
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005 and owned by Google since late 2006, on which users can upload, view and share videos.^[
  • 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, short original videos, and educational videos.
  • Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, the BBC, Vevo, Hulu, and other organizations offer some of their material via the site, as part of the YouTube partnership program
  • Unregistered users can watch videos, while registered users can upload an unlimited number of videos.

  2 more annotations...

• 19 Sep 13
  

  Teng Lee

  How youtube came to be. I thought this would be important in the film industry. Advertising and Illegal video sharing how that has affected the film business

  Present Film Video technology

• 28 Aug 13
  

  Jason Stole

  election with magnetic beads, endothelial cells were immortalized with polyoma middle Tantigen. Isolated MLEC were maintained with EBM2/EGM2 MV SingleQuot Kit Supplement & Growth Factors containing 15% fetal bovine serum. Cell proliferation in MLEC was measured at 24 and 72 hours after MMI0100 treat

  cGMP peptide synthesis

• 24 Aug 13
  

  Shawn Gomes
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005 and owned by Google since late 2006, on which users can upload, view and share videos.^[4] 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 con
• 19 Aug 13
  

  Keion Jones

  References

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005 and owned by Google since late 2006, on which users can upload, view and share videos
  • ouTube says that roughly 60 hours of new videos are uploaded to the site every minute, and that around three quarters of the material comes from outside the U.S.^[21][22][23] The site has 800 million unique users a month.

  • Content accessibility

     

    YouTube offers users the ability to view its videos on web pages outside their website. Each YouTube video is accompanied by a piece of HTML that can be used to embed it on any page on the Web.^[83] This functionality is often used to embed YouTube videos in social networking pages and blogs.^[84] Embedding, as well as ranking and commenting, can be disabled by the video owner.

  • Copyrighted material

     

    At the time of uploading a video, YouTube users are shown a screen with the message "Do not upload any TV shows, music videos, music concerts or advertisements without permission, unless they consist entirely of content that you created yourself

  2 more annotations...

• 05 Aug 13
  

  abhishek kumar
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005 and owned by Google since late 2006, on which users can upload, view and share videos.^[4] 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, short original videos, and educational videos.
  • YouTube was founded by Chad Hurley, Steve Chen, and Jawed Karim, who were all early employees of PayPal.^[7] Hurley had studied design at Indiana University of Pennsylvania, while Chen and Karim studied computer science together at the University of Illinois at Urbana-Champaign.
• 22 Apr 13
  

  Owen King
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos
  • 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,
• 18 Apr 13
  

  Liysi M
  • on which users can upload, view and share videos
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005
  • YouTube partnership program.
  • Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, the BBC, Vevo, Hulu, and other organizations offer some of their material via the site, as part of the YouTube partnership program.^[
  • YouTube, LLC was bought by Google for US$1.65 billion, and operates as a subsidiary of Google.
  • February 14, 2005
  •  Steve Chen, Chad Hurley, Jawed Karim  
  • 54 language versions available through user interface
  • Chad Hurley, Steve Chen, and Jawed Karim

  7 more annotations...

• 09 Apr 13
  

  Samantha Hampar
  • interface and increasing the time users spend on the site.
• 23 Feb 13
  

  mojetbit

  Video

• 06 Feb 13
  

  Ethan S

  chad hurley youtube wikipedia

  • Steve Chen, Chad Hurley, Jawed Karim
• 28 Jan 13
  

  jamiese johnson
  • users can upload, view and share videos
  • YouTube is a video-sharing website,
• 15 Jan 13
  

  Jayme Flythe

  youtube

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos.^[4] 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, short original videos, and educational videos.
• 30 Nov 12
  

  Sara D

  youtube public music technology wikipedia

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos.^[4] 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, short original videos, and educational videos.
• 

  CARMEL JOSEPH

  YouTube est un site de partage de vidéos, créée par trois anciens employés PayPal en février 2005, sur lequel les utilisateurs peuvent télécharger, afficher et partager des vidéos. La société est basée à San Bruno, en Californie, et utilise vidéo Adobe Flash et HTML5 technologie pour afficher une grande variété de générés par l'utilisateur contenu vidéo, y compris les clips et clips TV, musique et vidéos, ainsi que contenu amateur tels que blogs vidéo, court vidéos originales, et des vidéos éducatives.

  Vidéo

• 08 Nov 12
  

  sitaliqu

  Description Youtube

  youtube wikipedia public technology music

• 07 Nov 12
  

  Rachel W
  • YouTube, LLC was bought by Google for US$1.65 billion
• 23 Oct 12
  

  Melissa English

  YouTube

• 11 Oct 12
  

  Adriana del Paso

  you youtube ETEC ASSIGNMENT 1

• 10 Oct 12
  

  Luke O
• 

  Teddy C.
• 

  Craig T
• 

  Georgia B
• 

  Andre M
• 

  Candice T
• 

  Jacob R
• 

  Aaron Limson
• 

  Zion L
  • Create
• 

  Kirsten Cruz
• 

  Noel D
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which us
• 19 Sep 12
  

  amina d
  • mp to: naviga
  • YouTube is a video-sharing website
  • upload, view and share video
  • 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.

  2 more annotations...

• 

  vanessa s

  You Tube videos public technology music

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos
  • Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, the BBC, VEVO, Hulu
• 13 Sep 12
  

  twistol

  •  

    Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, the BBC, VEVO, Hulu, and other organizations offer some o
• 24 Jul 12
  

  Danielle Patterson
  • Key people Salar Kamangar (CEO)
  • Parent Independent (2005–2006)
     Google (2006–present)
  • Slogan Broadcast Yourself
  • Type of site Video hosting service
  • Available in 54 language versions available through user interface^[2]  Launched February 14, 2005

  3 more annotations...

• 06 Jul 12
  

  Julie Bisher

  • Community policy

     

    YouTube has a set of community guidelines aimed to reduce abuse of the site's features. Generally prohibited material includes sexually explicit content, videos of animal abuse, shock videos, content uploaded without the copyright holder's consent, hate speech, spam, and predatory behaviour.^[152] Despite the guidelines, YouTube has faced criticism from news sources for content in violation of these guidelines.

     

  • 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.^[176]

     

     
• 03 Apr 12
  

  Hugo Ledo

  YouTube - Wikipedia, the free encyclopedia

  YouTube Wikipedia free encyclopedia

• 19 Mar 12
  

  kylie de oliveira

  everything highlighted

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos.^[3]
  • , California
  • The company is based in San Bruno
  • 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
  • ouTube 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.^[14] According to data published by market research
  • iled 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.^[22][23] In October 2006, Google Inc. announced that

  4 more annotations...

• 28 Feb 12
  

  iantuchon1015

  "
  YouTube
  From Wikipedia, the free encyclopedia
  Page semi-protected
  YouTube, LLC YouTube Logo.svg
  Type Subsidiary of Google, limited liability company
  Founded February 14, 2005
  Founder(s) Steve Chen, Chad Hurley, Jawed Karim
  Headquarters 901 Cherry Ave, San Bruno,
  California, United States
  Area served Worldwide
  Key people Salar Kamangar (CEO)
  Chad Hurley (Advisor)
  Industry Internet
  Parent Independent (2005–2006)
  Google (2006–present)
  Slogan Broadcast Yourself
  Website YouTube.com
  (see list of localized domain names)
  Alexa rank steady 3 (February 2012)[1]
  Type of site Video hosting service
  Advertising Google AdSense
  Registration Optional (Only required for certain tasks such as viewing flagged videos, viewing flagged comments and uploading videos)
  Available in 54 language versions available through user interface[2]
  Launched February 14, 2005
  Current status Active
  [show]Screenshot
  
  YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos.[3]
  
  The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5[4] 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, the BBC, VEVO, Hulu, and other organizations offer some of their material via the site, as part of the YouTube partnership program.[5]
  
  Unregistered users can watch videos, while registered users can upload an unlimited number of videos. Videos considered to contain offensive content are available only to registered users at least 18 years old.
  
  In November 2006, YouTube, LLC was bought by Google for US$1.65 billion, and now operates as a subsidiary of Google.
  Contents
  [hide]
  
  1 Company history
  2 Features
  2.1 Video technology
  2.1.1 Playback
  2.1.2 Uploading
  2.1.3 Quality and codecs
  2.1.4 3D videos
  2.2 Content accessibility
  2.2.1 Platforms
  2.3 Localization
  3 April Fools
  4 Censorship and filtering
  5 Social impact
  6 Community policy
  6.1 Copyrighted material
  6.1.1 Content ID
  6.2 Controversial content
  6.3 User comments
  7 See also
  8 References
  9 Bibliography
  10 External links
  
  Company history
  Main article: History of YouTube
  From left to right: Chad Hurley, Steve Chen, and Jawed Karim
  
  YouTube was founded by Chad Hurley, Steve Chen, and Jawed Karim, who were all early employees of PayPal.[6] Hurley had studied design at Indiana University of Pennsylvania, while Chen and Karim studied computer science together at the University of Illinois at Urbana-Champaign.[7]
  
  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 Chen 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".[8]
  
  YouTube began as a venture-funded technology startup, primarily from a $11.5 million investment by Sequoia Capital between November 2005 and April 2006.[9] YouTube's early headquarters were situated above a pizzeria and Japanese restaurant in San Mateo, California.[10] The domain name www.youtube.com was activated on February 14, 2005, and the website was developed over the subsequent months.[11]
  
  The first YouTube video was entitled Me at the zoo, and shows co-founder Jawed Karim at the San Diego Zoo.[12] The video was uploaded on April 23, 2005, and can still be viewed on the site.[13]
  
  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.[14] 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.[15] YouTube says that roughly 60 hours of new videos are uploaded to the site every minute, and that around three quarters of the material comes from outside the U.S.[16][17][18] The site has eight hundred million unique users a month.[19] It is estimated that in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000.[20] Alexa ranks YouTube as the third most visited website on the Internet, behind Google and Facebook.[21]
  
  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.[22][23] 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.[24] 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.[25] In June 2008, a Forbes magazine article projected the 2008 revenue at $200 million, noting progress in advertising sales.[26] Visitors to YouTube spend an average of fifteen minutes a day on the site, in contrast to the four or five hours a day spent by a typical U.S. citizen watching television.[19]
  
  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.[27][28] 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.[29] In January 2010, YouTube introduced an online film rentals service,[30] which is currently available only to users in the US, Canada and the UK.[31][32] The service offers over 6,000 films.[33]
  YouTube's current headquarters in San Bruno, California
  
  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.[34]
  
  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."[35] 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".[36] In May 2011, YouTube reported in its company blog that the site was receiving more than three billion views per day.[17] In January 2012, YouTube stated that the figure had increased to four billion videos streamed per day.[16]
  
  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.[37]
  
  In April 2011, James Zern, a YouTube software engineer, revealed that 30 percent of videos accounted for 99 percent of views on the site.[38]
  
  In November 2011, the Google+ social networking site was integrated directly with YouTube and the Chrome web browser, allowing YouTube videos to be viewed from within the Google+ interface.[39] In December 2011, YouTube launched a new version of the site interface, with the video channels displayed in a central column on the home page, similar to the news feeds of social networking sites.[40] At the same time, a new version of the YouTube logo was introduced with a darker shade of red, the first change in design since October 2006.[41]
  Features
  Video technology
  Playback
  
  Viewing YouTube videos on a personal computer requires the Adobe Flash Player plug-in to be installed on the browser. The Adobe Flash Player plug-in is one of the most common pieces of software installed on personal computers and accounts for almost 75% of online video material.[42]
  
  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.[43][44] 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.[45][46]
  Uploading
  
  All YouTube users can upload videos up to 15 minutes in duration. Users who have a good track record of complying with the site's Community Guidelines may be offered the ability to upload videos of unlimited length, which requires verifying the account, normally through a mobile phone.[47] When YouTube was launched in 2005, it was possible to upload long videos, but a ten-minute limit was introduced in March 2006 after YouTube found that the majority of videos exceeding this length were unauthorized uploads of television shows and films.[48][49] The 10-minute limit was increased to 15 minutes in July 2010.[50] File size is limited to 2 GB for uploads from YouTube web page, and to 20 GB if up to date browser versions are used.[51]
  
  YouTube accepts videos uploaded in most container formats, including .AVI, .MKV, .MOV, .MP4, DivX, .FLV, and .ogg and .ogv. These include video formats such as MPEG-4, MPEG, VOB, and .WMV. It also supports 3GP, allowing videos to be uploaded from mobile phones.[52] Videos with progressive scanning or interlaced scanning can be uploaded, but for the best video quality, YouTube prefers interlaced videos to be deinterlaced prior to uploading. All the video formats on YouTube use progressive scanning.[53]
  Quality and codecs
  
  YouTube originally offered videos at only one quality level, displayed at a resolution of 320x240 pixels using the Sorenson Spark codec (a variant of H.263),[54][55] with mono MP3 audio.[56] In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones.[57] In March 2008, a high quality mode was added, which increased the resolution to 480x360 pixels[58] In November 2008, 720p HD support was added. At the time of the 720p launch, the YouTube player was changed from a 4:3 aspect ratio to a widescreen 16:9.[59] With this new feature, YouTube began a switchover to H.264/MPEG-4 AVC as its default video compression format. In November 2009, 1080p HD support was added. In July 2010, YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096x3072 pixels.[60][61]
  
  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.[62]
  Comparison of YouTube media encoding options fmt value[1] 5 6 34 35 18 22 37 38 83 82 85 84 43 44 45 46 100 101 46 102 13 17
  Default container FLV MP4 WebM[63] 3GP
  Video Encoding Sorenson H.263 MPEG-4 AVC (H.264) VP8 MPEG-4 Visual
  Profile – Main Baseline High 3D – 3D –
  Resolution progressive 224p 270p 360p 480p 360p 720p 1080p 2304p 240p 360p 520p 720p 360p 480p 720p 1080p 360p 480p 540p 720p –
  Resolution VGA WQVGA HVGA nHD FWVGA nHD WXGA WUXGA HXGA – nHD FWVGA WXGA WUXGA – –
  Max width (pixels) 400 480 640 854 640 1280 1920 4096 854 640 1920 1280 640 854 1280 1920 640 854 1920 1280 176
  Max height (pixels) 240 270 360 480 360 720 1080 3072 240 360 520 720 360 480 720 1080 360 480 540 720 144
  Bitrate[2] (Mbit/s) 0.25 0.8 0.5 0.8–1 0.5 2–2.9 3–4.3 3.5–5 0.5 2-2.9 0.5 1 2 – – 0.5 2
  Audio Encoding MP3 AAC Vorbis AAC
  Channels 1–2 2 (stereo) 1
  Sampling rate (Hz) 22050 44100 22050
  Bitrate[2] (kbit/s) 64 128 128 152 96 152 128 192 128 192 –
  
  ^ 1 fmt was an undocumented URL parameter that allowed selecting YouTube quality mode without using player user interface. Since December 2010, this parameter is no longer supported.
  ^ 2 Approximate values based on statistical data; actual bitrate can be higher or lower due to variable encoding rate.[64][65][66][67]
  3D videos
  
  In a video posted on July 21, 2009,[68] YouTube software engineer Peter Bradshaw announced that YouTube users can now upload 3D videos. The videos can be viewed in several different ways, including the common anaglyph (cyan/red lens) method which utilizes glasses worn by the viewer to achieve the 3D effect.[69][70][71] The YouTube Flash player can display stereoscopic content interleaved in rows, columns or a checkerboard pattern, side-by-side or anaglyph using a red/cyan, green/magenta or blue/yellow combination. In May 2011, an HTML5 version of the YouTube player began supporting side-by-side 3D footage that is compatible with Nvidia 3D Vision.[72]
  Content accessibility
  
  YouTube offers users the ability to view its videos on web pages outside the site. Each YouTube video is accompanied by a piece of HTML, which can be used to embed it on a page outside the YouTube website. This functionality is often used to embed YouTube videos in social networking pages and blogs.[73] Embedding, as well as ranking and commenting, can be disabled by the video owner.
  
  YouTube does not usually offer a download link for its videos, and intends for them to be viewed through its website interface.[74] A small number of videos, such as the weekly addresses by President Barack Obama, can be downloaded as MP4 files.[75] Numerous third-party web sites, applications and browser plug-ins allow users to download YouTube videos.[76] 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.[77]
  Platforms
  
  Some smartphones are capable of accessing YouTube videos, dependent on the provider and the data plan. YouTube Mobile was launched in June 2007, using RTSP streaming for the video.[78] Not all of YouTube's videos are available on the mobile version of the site.[79]
  
  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.[80] In July 2010, the mobile version of the site was relaunched based on HTML5, avoiding the need to use Adobe Flash Player and optimized for use with touch screen controls.[81] The mobile version is also available as an app for the Android platform.[82][83]
  
  A TiVo service update in July 2008 allowed the system to search and play YouTube videos.[84] 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.[85][86] In June 2009, YouTube XL was introduced, which has a simplified interface designed for viewing on a standard television screen.[87] YouTube is also available for the Xbox Live.[88]
  Localization
  
  On June 19, 2007, Google CEO Eric Schmidt was in Paris to launch the new localization system.[89] The interface of the website is available with localized versions in 39 countries and a USA version.[90][91]
  Country Language Launch date
  USA (and worldwide launch) English (American) February 15, 2005[89]
  Brazil Portuguese (Brazil) June 19, 2007[89]
  France French June 19, 2007[89]
  Ireland English (Ireland) June 19, 2007[89]
  Italy Italian June 19, 2007[89]
  Japan Japanese June 19, 2007[89]
  Netherlands Dutch June 19, 2007[89]
  Poland Polish June 19, 2007[89]
  Spain Spanish and Catalan June 19, 2007[89]
  United Kingdom English (United Kingdom) June 19, 2007[89]
  Mexico Spanish (Mexico) October 11, 2007[92]
  Hong Kong English and Chinese (Traditional) October 17, 2007[93]
  Taiwan Chinese (Traditional) October 18, 2007[94]
  Australia English (Australia) October 22, 2007[95]
  New Zealand English (New Zealand) October 22, 2007[95]
  Canada English (Canada) and French (Canada) November 6, 2007[96]
  Germany German November 8, 2007[97]
  Russia Russian November 13, 2007
  South Korea Korea, South Korean January 23, 2008
  Israel Hebrew September 16, 2008
  India English (India) and Hindi May 7, 2008[98]
  Czech Republic Czech October 9, 2008[99]
  Sweden Swedish October 22, 2008
  South Africa English (South African) May 17, 2010[89]
  Argentina Spanish (Argentina) September 8, 2010[90]
  Algeria Arabic March 9, 2011[100]
  Egypt Arabic March 9, 2011[100]
  Saudi Arabia Arabic March 9, 2011[100]
  Tunisia Arabic March 9, 2011[100]
  Jordan Arabic March 9, 2011[100]
  Morocco Arabic March 9, 2011[100]
  Yemen Arabic March 9, 2011[100]
  Kenya English (Kenya) and Swahili October 5, 2011
  Philippines English (official) and Filipino October 13, 2011[101]
  Singapore English (Singapore) October 20, 2011[102]
  Belgium French (Belgian), and Dutch (Belgian) November 16, 2011
  Colombia Spanish (Colombia) November 30, 2011[103]
  Uganda English (Ugandan) December 2, 2011[104]
  Nigeria English (Nigerian) December 7, 2011[105]
  Chile Spanish (Chile) January 23, 2012
  
  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.[106]
  
  The interface of the YouTube website is available in 51 different language versions, including Catalan, Danish, Finnish, Greek, Hungarian, Norwegian and Slovene, which do not have local channel versions.[2]
  
  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.[107][108]
  
  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.[109] In April 2009, a similar dispute led to the removal of premium music videos for users in Germany.[110]
  April Fools
  
  YouTube has featured an April Fools prank on the site on April 1 of every year since 2008:
  
  2008: All the links to the videos on the main page were redirected to Rick Astley's music video "Never Gonna Give You Up", a prank known as "Rickrolling".[111][112]
  2009: When clicking on a video on the main page, the whole page turned upside down. YouTube claimed that this was a new layout.[113]
  2010: YouTube temporarily released a "TEXTp" mode, which translated the colors in the videos to random upper case letters. YouTube claimed in a message that this was done in order to reduce bandwidth costs by $1 per second.[114]
  2011: The site celebrated its "100th anniversary" with a "1911 button" and a range of sepia-toned silent, early 1900s-style films, including "Flugelhorn Feline", a parody of Keyboard Cat.[115]
  
  Censorship and filtering
  Main article: Censorship of YouTube
  
  Several countries have blocked access to YouTube, including:
  
  YouTube has been blocked in China.[116][117]
  Morocco shut down access to YouTube in 2008.[118]
  Thailand blocked YouTube between 2006 and 2007 due to offensive videos relating to King Bhumibol Adulyadej.[119][120]
  Turkey blocked access to YouTube between 2008 and 2010 after controversy over videos deemed insulting to Mustafa Kemal Atatürk.[121][122][123] The block was lifted briefly but reimposed in November 2010.[124]
  On December 3, 2006, Iran temporarily blocked access to YouTube, along with several other sites, after declaring them as violating social and moral codes of conduct. The YouTube block came after a video was posted online that appeared to show an Iranian soap opera star having sex.[125] The block was later lifted and then reinstated after Iran's 2009 presidential election.[126]
  On February 23, 2008, Pakistan blocked YouTube because of "offensive material" towards the Islamic faith, including display of the Danish cartoons of the prophet Muhammad.[127] This led to a near global blackout of the YouTube site for around two hours, as the Pakistani block was inadvertently transferred to other countries. Pakistan lifted its block on February 26, 2008.[128] Many Pakistanis circumvented the three-day block by using virtual private network software.[129] In May 2010, following the Everybody Draw Mohammed Day, Pakistan again blocked access to YouTube, citing "growing sacrilegious content".[130]
  On January 24, 2010, Libya blocked access to YouTube after it featured videos of demonstrations in the Libyan city of Benghazi by families of detainees who were killed in Abu Salim prison in 1996, and videos of family members of Libyan leader Muammar Gaddafi at parties. The blocking was criticized by Human Rights Watch.[131]
  
  Education authorities in some regions have blocked student access to YouTube, with some state education departments in Australia citing the inability to determine what sort of video material might be accessed.[132]
  
  YouTube was awarded a 2008 Peabody Award and cited for being "a 'Speakers' Corner' that both embodies and promotes democracy".[133][134]
  Social impact
  Main article: Social impact of YouTube
  Charlie Bit My Finger is YouTube's most-viewed user generated video, as of 2011
  
  While other video hosting websites had been launched before YouTube in 2005 (including Metacafe in 2003 and Vimeo in 2004), YouTube was conceived to be, in the words of Jawed Karim, a video version of the rating site Hot or Not. Karim commented that Hot or Not was a site "where anyone could upload content that everyone else could view. That was a new concept because up until that point, it was always the people who owned the website who would provide the content." In December 2006, Time magazine wrote: "YouTube is to video browsing what a Wal-Mart Supercenter is to shopping: everything is there, and all you have to do is walk in the door."[8]
  
  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.[135] Another YouTube video to receive extensive coverage is guitar,[136] 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.[137] This video has since been removed from YouTube.[138]
  
  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.[139][140][141] The clip features two English brothers, with one-year-old Charlie biting the finger of his brother Harry, aged three.[142] In Time's list of YouTube's 50 greatest viral videos of all time, "Charlie Bit My Finger" was ranked at number one.[143]
  
  Entertainment Weekly placed YouTube on its end-of-the-decade "best-of" list, describing it as: "Providing a safe home for piano-playing cats, celeb goof-ups, and overzealous lip-synchers since 2005."[144]
  Community policy
  
  YouTube has a set of community guidelines aimed to reduce abuse of the site's features. Generally prohibited material includes sexually explicit content, videos of animal abuse, shock videos, content uploaded without the copyright holder's consent, hate speech, spam, and predatory behaviour.[145] Despite the guidelines, YouTube has faced criticism from news sources for content in violation of these guidelines.
  Copyrighted material
  
  At the time of uploading a video, YouTube users are shown a screen with the message "Do not upload any TV shows, music videos, music concerts or advertisements without permission, unless they consist entirely of content that you created yourself".[146] Despite this advice, there are still many unauthorized clips of copyrighted material on YouTube. YouTube does not view videos before they are posted online, and it is left to copyright holders to issue a takedown notice pursuant to the terms of the Digital Millennium Copyright Act. Three successful complaints for copyright infringement against a user account will result in the account and all of its uploaded videos being deleted.[147][148]
  
  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.[149][150][151] 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".[152] During the same court battle, Viacom won a court ruling requiring YouTube to hand over 12 terabytes of data detailing the viewing habits of every user who has watched videos on the site. The decision was criticized by the Electronic Frontier Foundation, which called the court ruling "a setback to privacy rights".[153][154] 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.[155]
  
  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.[156]
  
  In the case of Smith v. Summit Entertainment LLC, Matt Smith sued Summit Entertainment for the wrongful use of copyright takedown notice on YouTube. He asserted seven courses of action and four were ruled in Smith's favor.[157]
  Content ID
  
  In June 2007, YouTube began trials of a system for automatic detection of uploaded videos that infringe copyright. The system was regarded by Google CEO Eric Schmidt as necessary for resolving lawsuits such as the one from Viacom, which alleged that YouTube profited from pirated content.[158] The system, which became known as Content ID, creates a ID File for copyrighted audio and video material, and stores it in a database. When a video is uploaded, it is checked against the database, and flags the video as a copyright violation if a match is found. When this occurs, the content owner has the choice of blocking the video to make it unviewable, tracking the viewing statistics of the video, or adding advertisements to the video. YouTube describes Content ID as "very accurate in finding uploads that look similar to reference files that are of sufficient length and quality to generate an effective ID File".[159] Content ID generates one third of YouTube's revenue.[19]
  
  An independent test in 2009 uploaded multiple versions of the same song to YouTube, and concluded that while the system was "surprisingly resilient" in finding copyright violations in the audio tracks of videos, it was not infallible.[160] The use of Content ID to remove material automatically has led to controversy in some cases, as the videos have not been checked by a human for fair use.[161] If a YouTube user disagrees with a decision by Content ID, it is possible to fill in a form disputing the decision.[162] YouTube has cited the effectiveness of Content ID as one of the reasons why the site's rules were modified in December 2010 to allow some users to upload videos of unlimited length.[163]
  Controversial content
  
  YouTube has also faced criticism over the offensive content in some of its videos. The uploading of videos containing defamation, pornography, and material encouraging criminal conduct is prohibited by YouTube's terms of service.[145] Controversial areas have included Holocaust denial and the Hillsborough disaster, in which 96 football fans from Liverpool were crushed to death in 1989.[164][165]
  
  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.[145] 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.[166]
  
  In October 2010, U.S. Congressman Anthony Weiner urged YouTube to take down from its website videos of imam Anwar al-Awlaki, saying that by hosting al-Awlaki's messages, "We are facilitating the recruitment of homegrown terror".[167] 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".[168] In December 2010, YouTube added "promotes terrorism" to the list of reasons that users can give when flagging a video as inappropriate.[169]
  User comments
  
  Most videos enable users to leave comments, and these have attracted attention for the negative aspects of both their form and content. When Time in 2006 praised Web 2.0 for enabling "community and collaboration on a scale never seen before", it added that YouTube "harnesses the stupidity of crowds as well as its wisdom. Some of the comments on YouTube make you weep for the future of humanity just for the spelling alone, never mind the obscenity and the naked hatred".[170] The Guardian in 2009 described users' comments on YouTube as follows:
  
  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.[171]
  
  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".[172]
  See also
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  References
  
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  ^ Tsotsis, Alexia (May 9, 2011). "Google Partners With Sony Pictures, Universal And Warner Brothers For YouTube Movies". techcrunch.com. Retrieved June 5, 2011.
  ^ Sweney, Mark (January 20, 2010). "Cricket: IPL goes global with live online deal". The Guardian (London). Retrieved February 6, 2010.
  ^ "YouTube redesigns website to keep viewers captivated". Retrieved April 1, 2010.
  ^ Chapman, Glenn. "YouTube serving up two billion videos daily". Retrieved May 17, 2010.
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  ^ Whitney, Lance (November 4, 2011). "Google+ now connects with YouTube, Chrome". CNET. Retrieved November 4, 2011.
  ^ "YouTube's website redesign puts the focus on channels". BBC. December 2, 2011. Retrieved December 2, 2011.
  ^ Cashmore, Pete (October 26, 2006). "YouTube Gets New Logo, Facelift and Trackbacks – Growing Fast!". Retrieved December 2, 2011..
  ^ Fildes, Jonathan (October 5, 2009). "Flash moves on to smart phones". BBC. Retrieved November 30, 2009.
  ^ "Watch this YouTube Video without the Flash Player". Retrieved November 30, 2009.
  ^ "HTML5 YouTube viewer: close, but not quite there". Retrieved November 30, 2009.
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  ^ Fisher, Ken. "YouTube caps video lengths to reduce infringement". Ars Technica. Retrieved December 4, 2008.
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  ^ Tinic Uro (August 13, 2005). "The quest for a new video codec in Flash 8". Retrieved January 27, 2011. "We went this route before with Sorenson Spark which is an incomplete implementation of H.263 and it bit us badly when trying to implement certain solutions."
  ^ Adobe Systems Incorporated (2010). "Adobe Flash Video File Format Specification Version 10.1" (PDF). p. 72. Retrieved January 27, 2011. "Sorenson H.263"
  ^ "Market Demand for Sorenson Media's Sorenson Spark Video Decoder Expands Sharply". Sorenson Media. June 2, 2009. Retrieved July 31, 2009.
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  ^ Kincaid, Jason (July 7, 2010). "YouTube Mobile Goes HTML5, Video Quality Beats Native Apps Hands Down". Retrieved January 9, 2012.
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  ^ a b c d e f g h i j k l Sayer, Peter (June 19, 2007). "Google launches YouTube France News". PC Advisor. Retrieved August 3, 2009.
  ^ a b "YouTube launches in Argentina". September 9, 2010. Retrieved September 9, 2010.
  ^ "YouTube content locations". Retrieved September 10, 2010.
  ^ "Presentan hoy YouTube México [YouTube México launched today]" (in Spanish). El Universal. October 11, 2007. Retrieved September 9, 2010.
  ^ "中文上線 – YouTube 香港中文版登場！". Stanley5. October 17, 2007. Retrieved January 2, 2012.
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  ^ a b Nicole, Kristen (October 22, 2007). "YouTube Launches in Australia & New Zealand". Mashable. Retrieved August 3, 2009.
  ^ Nicole, Kristen (November 6, 2007). "YouTube Canada Now Live". Mashable. Retrieved August 3, 2009.
  ^ Ostrow, Adam (November 8, 2007). "YouTube Germany Launches". Mashable. Retrieved August 3, 2009.
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  ^ Bokuvka, Petr (October 12, 2008). "Czech version of YouTube launched. And it's crap. It sucks.". The Czech Daily Word (Wordpress.com). Retrieved August 3, 2009.
  ^ a b c d e f g "YouTube Launches Local Version For Algeria, Egypt, Jordan, Morocco, Saudi Arabia, Tunisia and Yemen". ArabCrunch. Retrieved March 13, 2011.
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  ^ YouTube launches localized website for Colombia December 1, 2011. Retrieved December 1, 2011.
  ^ Google Launches YouTube Uganda December 2, 2011. Retrieved January 15, 2012.
  ^ Google to Launch Youtube Nigeria Today December 7, 2011. Retrieved January 15, 2012.
  ^ "Learn More: Video not available in my country". YouTube Help. Retrieved August 4, 2009.
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  ^ Danforth, Nick (July 31, 2009). "Turks censor YouTube censorship". San Francisco Chronicle. Retrieved August 4, 2009.
  ^ Barnett, Emma (September 3, 2009). "Music videos back on YouTube in multi-million pound PRS deal". The Daily Telegraph (London). Retrieved September 3, 2009.
  ^ "Now YouTube stops the music in Germany". The Guardian (London). April 1, 2009. Retrieved April 2, 2009.
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  ^ "YouTube RickRolls April Fools In". RyanSpoon.com. March 31, 2008. Retrieved April 2, 2010.
  ^ "April fools: YouTube turns the world up-side-down". searchcowboys.com. April 1, 2009. Retrieved April 2, 2010.
  ^ "TEXTp saves YouTube bandwidth, money". YouTube. April 1, 2010. Retrieved April 2, 2010.
  ^ Richmond, Shane (April 1, 2011). "YouTube goes back to 1911 for April Fools' Day". The Daily Telegraph (London). Retrieved April 1, 2011.
  ^ Lococo, Edmond; Lee, Mark (October 17, 2010). "Youku Transcends YouTube as China Becomes Center of Internet". Bloomberg News. Retrieved October 23, 2010.
  ^ Sommerville, Quentin (March 24, 2009). "China 'blocks YouTube video site'". BBC News. Retrieved March 24, 2009.
  ^ Richards, Jonathan (May 30, 2007). "YouTube shut down in Morocco". The Times (London). Retrieved November 30, 2008.
  ^ "Thailand blocks access to YouTube". BBC. April 4, 2007. Retrieved November 30, 2008.
  ^ "Ban on YouTube lifted after deal". The Nation. August 31, 2007.
  ^ Rosen, Jeffrey (November 30, 2008). "Google's Gatekeepers". The New York Times. Retrieved December 1, 2008.
  ^ "Turkey goes into battle with Google". BBC News. July 2, 2010. Retrieved July 3, 2010.
  ^ "Turkey lifts two-year ban on YouTube". BBC News. October 30, 2010. Retrieved October 31, 2010.
  ^ Champion, Marc (November 2, 2010). "Turkey Reinstates YouTube Ban". The Wall Street Journal. Retrieved November 2, 2010.
  ^ Tait, Robert (November 4, 2006). "Censorship fears rise as Iran blocks access to top websites". The Guardian (London). Retrieved December 17, 2006.
  ^ "Mobile phones, Facebook, YouTube cut in Iran". American Free Press. Google. July 13, 2009. Retrieved July 8, 2009.
  ^ "Pakistan blocks YouTube website". BBC. February 24, 2008. Retrieved November 30, 2008.
  ^ "Pakistan lifts the ban on YouTube". BBC. February 26, 2008. Retrieved November 30, 2008.
  ^ "Pakistan web users get round YouTube ban". Silicon Republic. Archived from the original on June 29, 2008. Retrieved November 30, 2008.
  ^ "Pakistan blocks access to YouTube in internet crackdown". BBC News. May 20, 2010. Retrieved May 20, 2010.
  ^ "Watchdog urges Libya to stop blocking websites". Agence France-Presse. Retrieved February 7, 2010.
  ^ Colley, Andrew (March 6, 2007). "States still hold out on YouTube". Australian IT. Retrieved October 11, 2007.
  ^ "Complete List of 2008 Peabody Award Winners". Peabody Awards, University of Georgia. April 1, 2009. Retrieved April 1, 2009.
  ^ Ho, Rodney (April 2, 2009). "Peabody honors CNN, TMC". The Atlanta Journal-Constitution. Retrieved April 14, 2009.
  ^ Bray, Marianne. "Irate HK man unlikely Web hero". CNN. Retrieved May 28, 2008.
  ^ "guitar". YouTube. December 20, 2005. Retrieved August 3, 2009.
  ^ Heffernand, Virginia (August 27, 2006). "Web Guitar Wizard Revealed at Last". The New York Times. Retrieved July 2, 2007.
  ^ Lim's version of Canon Rock now produces the message "This video has been removed as a violation of YouTube's policy against spam, scams and commercially deceptive content. Sorry about that."[1] The video was uploaded by the user guitar90, who was not Lim and had found the video on www.mule.co.kr. The YouTube version received around 92 million views before being removed.[2] Other YouTube users have since mirrored Lim's video, also without permission.
  ^ "Charlie bit my finger – again !". YouTube. Retrieved May 2, 2011.
  ^ Chittenden, Maurice (November 1, 2009). "Harry and Charlie Davies-Carr: Web gets taste for biting baby". The Times (London). Retrieved November 20, 2009.
  ^ Stack, Brittany (March 21, 2010). "Meet YouTube's 224 million girl, Natalie Tran". ¨The Sunday Telegraph. Retrieved March 21, 2010.
  ^ Learmonth, Michael (February 22, 2010). "Lowered Expectations: Web Redefines 'Quality'". Advertising Age. Retrieved March 21, 2010.
  ^ "YouTube's 50 Greatest Viral Videos". Time. March 29, 2010. Retrieved April 11, 2010.
  ^ Geier, Thom; Jensen, Jeff; Jordan, Tina; Lyons, Margaret; Markovitz, Adam; Nashawaty, Chris; Pastorek, Whitney; Rice, Lynette; Rottenberg, Josh; Schwartz, Missy; Slezak, Michael; Snierson, Dan; Stack, Tim; Stroup, Kate; Tucker, Ken; Vary, Adam B.; Vozick-Levinson, Simon; Ward, Kate (December 11, 2009), "THE 100 Greatest MOVIES, TV SHOWS, ALBUMS, BOOKS, CHARACTERS, SCENES, EPISODES, SONGS, DRESSES, MUSIC VIDEOS, AND TRENDS THAT ENTERTAINED US OVER THE PAST 10 YEARS". Entertainment Weekly. (1079/1080):74-84
  ^ a b c "YouTube Community Guidelines". YouTube. Retrieved November 30, 2008.
  ^ Marsden, Rhodri (August 12, 2009). "Why did my YouTube account get closed down?". The Independent (London). Retrieved August 12, 2009.
  ^ Why do I have a sanction on my account? YouTube. Retrieved February 5, 2012.
  ^ "Is YouTube's three-strike rule fair to users?". BBC News (London). May 21, 2010. Retrieved February 5, 2012.
  ^ "Viacom will sue YouTube for $1bn". BBC News. March 13, 2007. Retrieved May 26, 2008.
  ^ "Mediaset Files EUR500 Million Suit Vs Google's YouTube". CNNMoney.com. July 30, 2008. Retrieved August 19, 2009.
  ^ "Premier League to take action against YouTube". The Daily Telegraph (London). May 5, 2007. Retrieved May 24, 2008.
  ^ "YouTube law fight 'threatens net'". BBC News. May 27, 2008. Retrieved May 28, 2008.
  ^ "Google must divulge YouTube log". BBC News (BBC News). July 3, 2008.
  ^ Helft, Miguel (July 4, 2008). "Google Told to Turn Over User Data of YouTube". The New York Times.
  ^ Lefkow, Chris (June 23, 2010). "US judge tosses out Viacom copyright suit against YouTube". AFP. Retrieved June 24, 2010.
  ^ Egelko, Bob (August 20, 2008). "Woman can sue over YouTube clip de-posting". San Francisco Chronicle. Retrieved August 25, 2008.
  ^ [1 "Smith v. Summit Entertainment LLC"]. Retrieved November 7, 2011.
  ^ Delaney, Kevin J. (June 12, 2007). "YouTube to Test Software To Ease Licensing Fights". Wall Street Journal. Retrieved December 4, 2011.
  ^ More about Content ID YouTube. Retrieved December 4, 2011.
  ^ Von Lohmann, Fred (April 23, 2009). "Testing YouTube's Audio Content ID System". Retrieved December 4, 2011.
  ^ Von Lohmann, Fred (February 3, 2009). "YouTube's January Fair Use Massacre". Retrieved December 4, 2011.
  ^ Content ID disputes YouTube. Retrieved December 4, 2011.
  ^ Up, Up and Away – Long videos for more users YouTube, December 9, 2010. Retrieved December 4, 2010.
  ^ "YouTube criticized in Germany over anti-Semitic Nazi videos". Reuters. Retrieved May 28, 2008.
  ^ "Fury as YouTube carries sick Hillsboro video insult". icLiverpool. Retrieved May 24, 2008.
  ^ Kirkup, James; Martin, Nicole (July 31, 2008). "YouTube attacked by MPs over sex and violence footage". The Daily Telegraph (London). Retrieved August 21, 2008.
  ^ "Al-Awlaki's YouTube Videos Targeted by Rep. Weiner". Fox News. October 25, 2010. Retrieved November 13, 2010.
  ^ Burns, John F.; Helft, Miguel (November 4, 2010). "YouTube Withdraws Cleric's Videos". The New York Times. Retrieved November 13, 2010.
  ^ Bennett, Brian (December 12, 2010). "YouTube is letting users decide on terrorism-related videos". Los Angeles Times. Retrieved December 14, 2010.
  ^ "Time's Person of the Year: You", Time, December 13, 2006
  ^ "Our top 10 funniest YouTube comments – what are yours?", The Guardian, November 3, 2009
  ^ "YouTube's worst comments blocked by filter", Daily Telegraph, September 2, 2008
  
  Bibliography
  
  Kelsey, Todd (2010). Social Networking Spaces: From Facebook to Twitter and Everything In Between. Springer-Verlag. ISBN 9781430225966.
  Lacy, Sarah (2008). The Stories of Facebook, YouTube and MySpace: The People, the Hype and the Deals Behind the Giants of Web 2.0. Richmond: Crimson. ISBN 9781854584533.
  
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  Contact us"

  youtube

• 26 Feb 12
  

  Sanferna Gibson
  •   Type Subsidiary of Google, limited liability company  Founded February 14, 2005 (2005-02-14)  Founder(s) Steve Chen, Chad Hurley, Jawed Karim  Headquarters 901 Cherry Ave, San Bruno,
     California, United States  Area served Worldwide  Key people Salar Kamangar (CEO)
     Chad Hurley (Advisor)  Industry Internet  Parent Independent (2005–2006)
     Google (2006–present)  Slogan Broadcast Yourself  Website YouTube.com
     (see list of localized domain names)  Alexa rank  3 (February 2012^[update])^[1]  Type of site Video hosting service  Advertising Google AdSense  Registration Optional (Only required for certain tasks such as viewing flagged videos, viewing flagged comments and uploading videos)  Available in 54 language versions available through user interface^[2]  Launched February 14, 2005 (2005-02-14)  Current status Active
• 08 Feb 12
  

  Keanan Gabertan

  virtual_communication wctafcp10A wctaflatclassroomproject

  • ntertainment Weekly placed YouTube on its end-of-the-decade "best-of" list, describing it as: "Providing a safe home for piano-playing cats, celeb goof-ups, and overzealous lip-synchers since 2005."^[144]
• 05 Dec 11
  

  contempt contempt
  • In December 2011, YouTube launched a new version of the site interface, with the video channels displayed in a central column on the home page, similar to the news feeds of social networking sites.^[38] At the same time, a new version of the YouTube logo was introduced with a darker shade of red, the first change in design since October 2006.^[39]
• 

  Kia Craighead
• 22 Nov 11
  

  A Genesis
  • YouTube accepts videos uploaded in most container formats, including .AVI, .MKV, .MOV, .MP4, DivX, .FLV, and .ogg and .ogv. These include video formats such as MPEG-4, MPEG, VOB, and .WMV. It also supports 3GP, allowing videos to be uploaded from mobile phones.^[50] Videos with progressive scanning or interlaced scanning can be uploaded, but for the best video quality, YouTube prefers interlaced videos to be deinterlaced prior to uploading. All the video formats on YouTube use progressive scanning.^[51]
• 17 Nov 11
  

  Kennedy W

  youtube courtloss viacom

  • Organizations including Viacom, Mediaset, and the English Premier League have filed  lawsuits against YouTube
  • Viacom, demanding $1 billion in damages, said that it had found more than  150,000 unauthorized clips of its material on YouTube
  • Viacom won a court ruling requiring YouTube to hand over 12 terabytes of data detailing the viewing habits of  every user who has watched videos on the site

  1 more annotation...

• 08 Nov 11
  

  kendra1997
  • YouTube is a video-sharing website, created by three former PayPal employees in February 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^[4] 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
• 07 Nov 11
  

  sforcino70

  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, share and view videos.^[3]

     

    The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5^[4] 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
• 13 Oct 11
  

  Jill Fukae

  This page gives us some history about the start of Youtube. We all have heard the name, but did you know that the first YouTube video was entitled Me at the zoo,
  and can still be viewed on Youtube?

  Educational Technology

• 27 Sep 11
  

  guy_westwell
  • hat in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000.^[18]
• 20 Sep 11
  

  Ryan O
  • YouTube is a video-sharing website, created by three former PayPal employees in February 2005
  • n November 2006, YouTube, LLC was bought by Google Inc
  • YouTube began as a venture-funded technology

  • April Fools

     

    YouTube has featured an April Fools prank on the site on April 1 of every year since 2008:

     
     
    • 2008: All the links to the videos on the main page were redirected to Rick Astley's music video "Never Gonna Give You Up", a prank known as "Rickrolling".^[97][98]
     
    • 2009: When clicking on a video on the main page, the whole page turned upside down. YouTube claimed that this was a new layout.^[99]
     
    • 2010: YouTube temporarily released a "TEXTp" mode, which translated the colors in the videos to random upper case letters. YouTube claimed in a message that this was done in order to reduce bandwidth costs by $1 per second.^[100]
     
    • 2011: The site celebrated its "100th anniversary" with a "1911 button" and a range of sepia-toned silent, early 1900s-style films, including "Flugelhorn Feline", a parody of Keyboard Cat.^[101]

  2 more annotations...

• 19 Sep 11
  

  viarod15 r

  how youtube works wikipedia

  • YouTube is a video-sharing website, created by three former PayPal employees in February 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^[4] 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.
• 15 Sep 11
  

  megan w

  youtube

• 20 Aug 11
  

  Michelle Avis

  social

• 24 Jul 11
  

  Boris Shvarstuhk
  • ated by three former PayPal employees in February of 2005, on which users can upload, share and view videos.^[3]
  • YouTube is a video-sharing website, cre
  • Most of the content on YouTube has been uploaded by individuals
  • In November 2006, YouTube, LLC was bought by Google Inc. for $1.65 billion, and now operates as a subsidiary of Google.
  • Viewing YouTube videos on a personal computer requires the Adobe Flash Player plug-in to be installed on the browser. The Adobe Flash Player plug-in is one of the most common pieces of software installed on personal computers and accounts for almost 75% of online video material.
  • Videos uploaded to YouTube by standard account holders are limited to 15 minutes in duration.
  • In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones
  • YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096x3072 pixels
  • In December 2010, YouTube added "promotes terrorism" to the list of reasons that users can give when flagging a video as inappropriate.

  7 more annotations...

• 13 Jul 11
  

  Tracy Senn

  the history of youtube and how it got started.

  youtube history

• 12 Apr 11
  

  Leigh Robinson
• 25 Mar 11
  

  Tony Wang

  culture pop music

• 06 Feb 11
  

  rchlgss

  google

  • n November 2006, YouTube, LLC was bought by Google Inc. for $1.65 billion, and now operates as a subsidiary of Google.
  • The interface of the website is available with localized versions in 24 countries and a worldwide version.^[128][129]
• 03 Feb 11
  

  tipinamerica

  For MT608 presentation

  youtube

• 26 Oct 10
  

  youtube wikipedia information web2.0 videos reference video

• 23 Sep 10
  

  Lidia Bor
  • 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".

  • 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.^[30]

     

    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.
• 19 Jul 10
  

  Julie Persinger

  youtube wikipedia

• 27 Jun 10
  

  Jackie Swanson
• 23 Apr 10
  

  crisiscris

  abs_product_dev

• 12 Apr 10
  
  • Quality and codecs
• 02 Mar 10
  

  Steph Fowler
  • YouTube is a video sharing website on which users can upload and share videos. Three former PayPal employees created YouTube in February 2005.^[1] In November 2006, YouTube, LLC was bought by Google Inc. for $1.65 billion, and is now operated as a subsidiary of Google. The company is based in San Bruno, California, and uses Adobe Flash Video 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, the BBC, UMG and other organizations offer some of their material via the site, as part of the YouTube partnership program.^[2]
• 26 Jan 10
  

  Masha du Toit

  06_managing_information

• 20 Oct 09
  

  Mariah Doman

  YouTube - Wikipedia, the free encyclopedia

  youtube wikipedia encyclopedia

• 26 Aug 09
  

  Tomas Park

  Lisätietoja,
  Tarkista tiedot lähteistä

  wikipedia youtube

  • Do not upload any TV shows, music videos, music concerts or commercials without permission unless they consist entirely of content you created yourself. The Copyright Tips page and the Community Guidelines can help you determine whether your video infringes someone else's copyright.
  • Videos uploaded to YouTube by standard account holders are limited to ten minutes in length and a file size of 2 GB
  • 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.
  • YouTube does not usually offer a download link for its videos, and intends that they are viewed through its website interface.
  • 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

  3 more annotations...

• 13 Aug 09
  

  andrewdick

  youtube

• 18 Jun 09
  

  larry weitzman

  embedded players tech tube you delicious

• 22 May 09
  

  Snay T

  • Format and quality comparison table

                                                                                               

    Comparison of YouTube media types

    		Standard	Medium	High	HD	Mobile	Old formats (pre 2009 Feb)
    							Standard	High	Mobile
    fmt value		34	18	35	22	17	none	6	13
    Container		FLV	MP4	FLV	MP4	3GP	FLV		3GP
    Video	Encoding	MPEG-4 AVC (H.264)				MPEG-4 Part 2	H.263		H.263/AMR
    	Aspect ratio	4:3, 16:9			16:9	11:9	4:3,16:9		4:3
    	Resolution	320×180  320×240  400×226	480×270  480×360	640×480  854×480	1280×720	176×144	320×240	480×360	176×144
    	Bitrate (kbit/s)	200	512	900	2000	?	200	900	?
    Audio	Encoding	AAC					MP3		AMR
    	Channels	2					1
    	Sampling rate (Hz)	44100					22050	44100	8000
    	Bitrate (kbit/s)	?	128		232	?	64	96	?
• 27 Apr 09
  

  Alex Street
  • and uses Adobe Flash Video technology
  • and uses Adobe Flash Video technology
  • 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.^[17] In June 2008 a Forbes magazine article projected the 2008 revenue at US$200 million, noting progress in advertising sales.^[22]
  • 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.^[17] In June 2008 a Forbes magazine article projected the 2008 revenue at US$200 million, noting progress in advertising sales.^[22]
  • YouTube's video playback technology for web users is based on the Adobe Flash Player. T
  • generally require the user to download and install a web browser plug-in in order to view vide
  • Videos uploaded to YouTube are limited to ten minutes in length and a file size of 1 GB
  • YouTube accepts videos uploaded in most formats, including .WMV, .AVI, .MKV, .MOV, MPEG, .MP4, DivX, .FLV, and .OGG. It also supports 3GP, allowing videos to be uploaded directly from a mobile phone.^[55]
  • The original format, now labelled "standard quality", displays videos at a resolution of 320x240 using the Sorenson Spark codec, with mono MP3 audio.
  • "High quality" videos, introduced in March 2008, are shown at 480x360 with mono MP3 sound
  • t the same time, the YouTube player was changed from a 4:3 aspect ratio to widescreen 16:9.
  • November 2008 by 720p HD support
  • 720p videos are shown in full 1280x720 and encoded with the H.264 codec. They also feature stereo audio encoded with AAC
  • Comparison of YouTube media type
  • • Comparison of video services
     
    • List of Internet phenomena

  13 more annotations...

• 08 Apr 09
  

  Jason Crewe

  copyright youtube music

• 20 Feb 09
  

  Sonia Blanco

  February 2005

  tesis

  • February 2005
  • It is estimated that 13 hours of new videos are uploaded to the site every minute, and that in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000.^[14][15] In March 2008, YouTube's bandwidth costs were estimated at approximately US$1 million a day.^[16] Alexa ranks YouTube as the third most visited website on the Internet, behind Yahoo! and Google.^[17]
• 24 Dec 08
  

  manuel razzari

  tesina

  • In October 2006, Google Inc. announced that it had acquired YouTube for US$1.65 billion

  • Before the launch of YouTube in 2005, there were few simple methods available for ordinary computer users who wanted to post videos online. With its easy to use interface, YouTube made it possible for anyone who could use a computer to post a video that millions of people could watch within a few minutes. The wide range of topics covered by YouTube has turned video sharing into one of the most important parts of Internet culture.

     
• 27 May 08
  

  Mike Wesch

  youtube wikipedia

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