Help Regarding creating video Streaming Website :)

Hello, I have got a college project where we were asked to select a theme for a website,so I selected video streaming.
but I have no Idea how m gonna do that.I have searched google for a while now but couldn't find anything sufficient helpful material.I have knowledge about HTML,css,PHP.but I dont know how streaming server part is going to work.Please Help me or suggest related websites which can educate me.
we are asked to create own database and liked them to websites.

Thanks in Advance.