If you want to download YouTube Video/Movie in Google Chrome, you can try following JavaScript plugins, it will instantly get the video URL from the webpage even if it's not yet finished loading. No Website or software is needed.
"Information on this page
1 Intro to copyright, fair use and images in posts
2 Intro to creative commons
3 Flickr Creative Commons Images
4 Finding Creative commons images
5 Adding images from Compfight to posts
6 Adding images using the Compfight plugin
7 Free and public domain images
8 Attributing free and public domain images
9 Sources of free and public domain images
10 Using own images
11 Using student photos online
12 Your Task
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