This script allows you to withdraw in total simplicity and speed, preview images from Youtube videos. Just enter the url into the form and in the blink of an eye will be released the preview of different sizes.
You can also add other calls following the document in the script, as the ID of the video, the video URL that sends, title, complete URL, Image URL.
It needs no database!
For any questions, problems or aid in the installation, you can write directly to the email from my profile: http://codecanyon.net/user/Marcolino92