If you go against the wishes of the TD, what's to stop him from defaulting your kid from the tourney? You can protest all you want, and write a letter to the section chief, but the fact is you have to go home.
I agree that USTA or each section needs to codify the rules regarding videotaping. These days anyone can just pull out a phone and record an hour of video. Most of them are just taping their own kid for improvement purposes, which I see nothing wrong with.