ZeroJinKui - Yeah, but it's over his eyes.

I agree with ZeroJinKui. He's definetly wearing his headband. In one point of the video you can see the back of his head and the ends of it are hanging down. I'd post a pic but whenever I screenshot something it won't work for some reason.

Probably. My gut feeling is that this is his alt, anyway. You can clearly see spirit Liu in his lifebar icon.