Before starting a streaming video site, you should ask an attorney specialized in internet.
Don't rely on very sensitive issues with laws from forums. Sometimes it cost less in the long run to spend a little extra money on lawyer consultation, than be in trouble with the laws and pay for damages.
If I can recommend you someone, contact my lawyer: www.waltonweblaw.com/
As long as men are free to ask what they must, free to say what they think, free to think what they will, freedom can never be lost and science can never regress.