YouTube is a great video service by Google. As with any other product Google makes it easy to use its content on your own site. You can embed a YouTube video on your own site or query YouTube API (if you have a developer key).
How to get a YouTube video screenshot image (thumbnail) URL using JavaScript
I’m gonna bookmark this one for sure.
Till now I was using http://www.tubeleecher.com
wow nice method .
I have had great results also with http://www.tubeleecher.com