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YouTube 
| Fast Facts | |
|---|---|
| YouTube, LLC | |
| Type | Subsidiary of Google |
| Founded | February 15, 2005 |
| Headquarters | San Bruno, California, United States {{{location}}} |
| Key_people | Steve Chen, Founder & CTO Chad Hurley, Founder & CEO Jawed Karim, Founder & Advisor |
| Owner | |
| Slogan | Broadcast Yourself |
| Alexa | #2 |
| Type of site | Video sharing |
| Advertising | Google AdSense |
| Registration | Optional (required to upload) |
| Available in | 12 languages |
| Launched | 2005 |
| Current status | Active |
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YouTube is a video sharing website where users can upload, view and share video clips. Created in 2005 by Chad Hurley, Steve Chen, dan Jawed Karim, three former PayPal employees, YouTube revealed that more than 100 million videos were being watched every day, and 2.5 billion videos were watched in June 2006. In November 2006, Google Inc. acquired the company for US$1.65 billion in Google stock.
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2. Unregistered users can watch most videos on YouTube's site, while registered users are permitted to upload an unlimited number of videos. YouTube officially accepts uploaded videos in .WMV, .AVI, .MOV, MPEG and .MP4, formats. Its video playback technology is based on Macromedia's Flash Player 9 and uses the Sorenson Spark H.263 video codec. YouTube also converts content to other formats so that it can be viewed outside of the website.
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3. By default, Youtube's audio files are mono-encoding with a 65kbit/s rate at 22050 Hz. However, it is possible to get a stereo audio track if the movie file is manually converted to FLV format. Beginning in June 2007, newly uploaded videos will also be encoded using the H.264 video standard to enable streaming of YouTube videos on the Apple TV and the iPhone.
| The Real History of YouTube (Video credit: theutubeblog) |
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4. As of November 2007, YouTube plays back videos, limited in both size and quality. The size is limited at the time of upload to pixel dimensions of 320 by 240 and the quality is limited to a bit rate of around 314kbit/s with a frame rate dependent on the uploaded video. Downloading or copying of the videos is not permitted.
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5. According to YouTube's terms of service, users may upload videos only with permission of the copyright holder and people depicted in the videos. Pornography, nudity, defamation, harassment, commercial advertisements, and material encouraging criminal conduct are prohibited. The uploader grants YouTube a license to distribute and modify the uploaded material for any purpose. This license terminates when the uploader deletes the material from the site.
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6. On October 12, 2006, YouTube announced that because of recent agreements with high-profile content creators, they are now required to use antipiracy software, which uses an audio-signature technology that can detect a low-quality copy of licensed video.The new system, called "Claim Your Content", will automatically identify copyrighted material for removal. YouTube would have to substitute an approved version of any clip or remove the material immediately. Industry analysts speculated that removal of content with such a system might reduce overall user satisfaction.
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7. YouTube's popularity has led to the creation of many YouTube Internet celebrities, popular individuals who have attracted much publicity in their home countries (and sometimes world renown), due to their videos. For some users, Internet fame has led to unexpected results and, in some cases, crossovers into traditional media or entertainment avenues, eg. former receptionist Brooke Brodack (Brookers) from Connecticut.
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8. Advertising is YouTube's central mechanism for gaining revenue. Before being purchased by Google, YouTube declared that its business model was advertisement-based, making US$15 million per month. more... at Wikipedia
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