[adventured]

To get better responses here, you'll want to add some additional information, such as: how large you're aiming for the service to be (50 users, a million users), what kind of video files will you be streaming (how large, what quality), what kind of performance demands do you need to meet for your users (will they get upset if you're ever down or your streaming quality isn't perfect), are you looking at self-hosting (smaller usage scenario) or cloud hosting, is it targeted at being a serious commercial service you charge for at some point, and so on.