Hi, one sugest to devellopers .
In this tutorial show the how to play youtube videos from xml with original id link of video, look. Tutorial with sources files
6. General restrictions on use
E. you agree not to (or attempt to) circumvent, disable or otherwise interfere with any security related features of the Website or features that (i) prevent or restrict use or copying of any User Submissions or YouTube Content or (ii) enforce limitations on use of the Website or the content accessible on the Website;
That is not an Youtube official supported method for video share… and can be translated as an illegal usage of the site.
Why not just use a service that freely lets you access the direct FLV ? I use photobucket for that specific purpose. They openly allow you to upload videos and hotlink the FLV directly. Trying to un-obfuscate youtube urls is both against there TOS , and annoying because they frequently change the obfuscation method to break stuff like this.
Thanks for sharing. Any english version?