You tube video id
You tube video id can be found either in the direct url like http://www.youtube.com/watch?v=H-BCPymjGI4 ( Tha string after “v=” ) or in the embed code.
Get the thumbnail image of the you tube video
You tube sores all these images under their sub domain IMG.
Copy this url http://img.youtube.com/vi/VIDEO_ID/default.jpg where Video ID is the one you got as seen above.
Hope it helps
