Yeah, I saw
this a while ago. An Associated Press site had a different video also from Mexico, but it's been taken down. I think it's definitely real.
But its not alien spacecrafts though. I say that because the exact same phenomena has been happening in the valley Hessdalen, which is about 50 km from where I live. The locals talked about it for decades, and sometime in the ninetees scientist started taking it seriously. Eventually a camera with a motion detector was set up to record anything that happened in the sky.
Their site has lots of pictures taken by that camera. The lights look exactly the same to me as the ones in Mexico. New observations in Hessdalen happens regulary.
What is it? An international team of scientists have been looking at it for a long time, but none of them really seem to have anything other than theories on what it might be. Alien spaceships? Might be, but very very unlikely if you ask me. They're lights we cant explain, that's all. There's no reason to belive there's an intelligent green man inside of them.