Alright, I admit that I was a richard. I overreacted to the post, but still, just stream it or something.
Just let him post the video. Tons of people post videos specifically for friends all the time, why don't you just go yell at them too? He can post what he wants, and you can't change that no matter what you say. You don't HAVE to watch it, you aren't being forced in any way, nor is it a major impact on your life.
So what if the video is bad? He'll enjoy making it, it's fun to him.
/vent.
That's all I have to say, sorry if I'm late, but I wanted to say this.