How to download videos from youtube

One of the best way to download youtube videos is by greasemonkey (+userscripts) . Here we can see how to download youtube videos from different browsers .
Using      Firefox        Google chrome         Opera
Using Firefox ( tested version – 8.0.1 ):
» Open your firefox and Goto tohttps://addons.mozilla.org/firefox/addon/greasemonkey/
and press Add to Firefox .
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» It will download greasemonkey extension and ask your confirmation to
install . Just press install . After installation restart your firefox .
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» Now you will see greasemonkey symbol in the right top.
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»Goto http://userscripts.org/scripts/show/25105 . Click install in the right top page .
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» It will ask for your confirmation to install . Just press install . Restart the firefox after installation .
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» Goto youtube video page . You will see the download button below the video . just press the download button and choose the format to download.
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» That’s it , you can download your favorite videos from youtube.
Using Google chrome ( tested version 16.0 ):
Downloading youtube videos from google chrome is easier than firefox .
» Just Goto http://userscripts.org/scripts/show/25105 . Click install in the right top .
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» First Press continue for the warning shown at the botton left and press install for Installing . Restart Chrome after installation .
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» Now Goto youtube video page . You will see the download button below the video . just press the download button and choose the format to download.
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» That’s it , You can able download your favorite videos from youtube.
Using Opera ( tested version – 11.60 ):
» Create a folder named “javascript” in your ” My documents ” and Goto http://userscripts.org/scripts/show/25105 and Right click “Install” in the right top page and choose “Save Linked Content As” and save the file in My documents-> javascript folder .
» Open safari browser and press Ctrl+F12 and choose “Advanced” Tab -> Content and press “JavaScript Options..” .
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» Press Choose and select My documents -> javascript folder and press Ok . Now you have successfully installed the javascript file. Restart opera.
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» Now Goto youtube video page. You will see the download button below the video . just press the download button and choose the format to download.
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» Now you can download your favorite videos from youtube.