Here is a tutorial video, http://www.youtube.com/watch?v=VsahDWNByVQ It offers some general hints for how to do the RTSP streaming video. Frankly, I'm afraid you have to contact your supplier to get more specific info. about your camera, so you can work out a compatible solution. Or, the supplier can offer the official software for the camera. Sometimes, only suppliers or manufacturers know what unbranded china stuffs really are.
BTW,based on my experience, yes, it's a annoying to buy china stuffs as many items are unbranded, but prices are good. My friends and I use comparison site to help us find the best one. Here is one, http://www.shopsimple.com/security-and-surveillance_c0914.html Compare prices and read reviews to avoid scams. More importantly, you can keep in contact with your supplier over there. This comparison site is the only one I know for comparing china stuffs.