I am trying to get the video URL of any YouTube video like this:

Open

http://youtube.com/get_video_info?video_id=VIDEOID

then take the account_playback_token token value and open this URL:

http://www.youtube.com/get_video?video_id=VIDEOID&t=TOKEN&fmt=18&asv=2

This should open a page with just the video or start a download of the video. But nothing happens, Safari's activity window says 'Not found', so there is something wrong with the URL. I want to integrate this into a iPad app, and the javascript method to get the video URL I use in the iPhone version of the app isn't working, so I need another solution.

YouTube changes all the time, and I think the URL is just outdated. Please help :)

Edit: It seems like the get_video method doesn't work anymore. I'd really appreciate if anybody could tell me another way to find the video URL.

Thank you, I really need help.