These days I noticed that Youtube API which I\'m using on my project is no longer available, e.g.
https://gdata.youtube.com/feeds/api/videos/dLEk9yiXVQs?v=2
If I'm understanding your question correctly then you should be using https://www.googleapis.com/youtube/v3/videos?id=&key=&part=snippet from now on.
https://www.googleapis.com/youtube/v3/videos?id=&key=&part=snippet
Google shutdown the old API effective April 20th, 2015.
Take a look at the newest v3 API getting started.