The complete video shows that he is being harassed as she throws stuff to him. She keeps pushing him and trying to force him to stop playing, and it seems she messes up with the hardware. There is no excuse, no justification for domestic violence, no matter if is physical or emotional, no matter if you are a man or a woman. Violence only causes more violence, and it's not defensible in any way or form. The worse is that kids are the most susceptible to replicate these behaviors in a subconscious manner. No matter how good or bad the parents are, kids look at them as an example and a role models to follow. Behaviors like this helps kids, who aren't 100% capable of rationalize about what is bad or good, to embrace such behaviors as the norm, and helps to create a culture of violence where men's feelings doesn't matter, or it's acceptable to hit women, in order to get what you want.