Build a website to allow for admin video uploads

Need a site built to allow admin to upload videos downloaded from youtube/other sources and allow for users to view, rate and comment. Also need view of top videos based on certain criteria. Looking for very simple, clean design. Administrator will upload videos, moderate comments, users will be allowed to flag inappropriate posts and ban users. Users must log in and facebook should be an option. Videos should be searchable based on video title and any metadata that admin enters. Video categories should be created and new categories should be allowed to be created by administer and videos can (but don't have to) be added to a category. Would like an associated twitter and facebook account that automatically posts when a new video is added. Winning developer should have experience in video compression, building CMS websites that are maintenance free, understand SEO techniques, familiar with Google Adsense, and building sites that are mobile device friendly. Bonus if you have built apps for iOS and Android platforms. Open to Drupal or .NET technology or other recommendations...