How to Store Video in a Video Web Application

What is the best way to store lots of video in a web application? Hardware, Database, etc. If you were building a YouTube clone, how would you do it?

From stackoverflow

• I believe the way youtube handles it is storing the file location in a table in the DB, so when the request is made the file is located from the hard drive and then loads the file from there.

  Take a look at: http://highscalability.com/youtube-architecture for more info.