You can’t host and stream video on every web hosting. Your web hosting must support video hosting. Most web hosting companies don’t allow or don’t have feature of video hosting on shared web hosting. You should look for web hosting companies that allow and support video hosting and streaming. It’s not costly, you can get good video web hosting for 3-10$ per month. There are lots of free and paid video website scripts also. A simple Google and Bing search can give you many good video scripts. With the help of these video scripts you can setup and start your own video sharing website instantly within few minutes. But if your video website start getting very good traffic, you may have to move to VPS hosting or a dedicated server. Like shared hosting, you don’t have to look for VPs hosting with  video hosting support. On a VPS you can install your own software. By installing proper software on your VPS, your VPS will have video support.