Listen to this motor please, what is wrong with it?

This is my 97 Jeep 4.0, 163000 kms. It only does this after it runs for 15 minutes. Pic of rod bearing.

[ame="http://www.youtube.com/watch?v=NxCu4zQ9WxQ&feature=player_embedded"]YouTube- P3311454.AVI[/ame]