hi,all .
I'm playing now with the Youtube API and I began a small project (for fun).
The problem Is the link is http://www.youtube.com/watch?v=j4tpRMfqKsM . maybe its format is mp4,flv,3gp... how can i know what format the video is ?
If someone knows how to do this or if someone could help me find the way to do this, please help me.
NOTE: I'm using php and shell. It will be a web app.