It's defiantly a 767, I could tell at first glance, to me in sure looks like there are only two gear, and the engines look to small to be Trent 800's like AAL using on their 777's. Also the wings look to short to be on a 777.
Also a big selling point to that it is a 767, look at the side of the aircraft. There are only two large doors instead of four as on the 777.  ;)