Now onto reality.
Javascript can't do anything, except some minor viruses. Java can do a lot of stuff, and it has numerous exploits. Java is rarely used because Flash is easier to work with. Only Adobe makes the Flash plug-in, and it integrates well, but there are several different Java plug-ins and none of them work properly, and nearly all of them crash or screw up, and some applets only work with one version of the plug-in, but you can only have one version installed at one time.
If I were a tube site and you were uploading crap, I would already have your IP address. If you have that kind of bandwidth, you are probably doing it through a server, so you don't have a dynamic IP address. I would ban it. And I would complain to the abuse department at your ISP/webhost. They already hate you and will terminate your account.
You can't upload "Java" to a tube site. You can only upload a video, and that video gets converted into flash video format. Online streaming tube site video is 99.9% flash video format.
And you are committing a felony. You are "exceeding authorization levels" without consent. Those users did not give you consent to turn off their computers. Indeed, your discussion here nothing less than conspiracy.
But having said that, here is what you need to do:
http://www.securiteam.com/securitynews/5XP0B1FM0W.html
http://www.mindedsecurity.com/MSA01110707.html
But that is assuming that you insert the metadata into your video and that the tube site retains that metadata when it produces the FLV.