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Evom from TheLittleAppFactory does just that. Evom allows you to convert online video to a number of formats, including iPod, Apple TV and HTML5.
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Evom converts Internet videos to a number of convenient formats easily
The easiest way I’ve found is to drag the Favicon of the YouTube page containing the video you wish to convert to the desktop, then to the Evom window. Evom does the rest for you. In my tests, it worked on YouTube and a number of other sites perfectly.
timmy!!!!
Sweet. Thanks for posting.
If you’re using Safari, there’s an easy way to download YouTube videos. Open the page with the movie and press Command-Option-A, which shows the Activity window. If you’re also loading other sites, you’ll see a list of them: scroll until you find the YouTube page and click on the arrow to show details about what is being loaded.
You will certainly notice an element whose size is over 0.5MB (most of the time, over 5MB). Double-click on it (even if it is still loading), and Safari will download it. When the download is over, navigate to the file in the Finder (which will probably be called get_video) and add the extension .flv to its name. Now you can play it with VLC or with QuickTime (only if you have Perian installed).