ClipBucket is a community supported open source video sharing site and management script. In ClipBucket first incarnation, it was similar to popular video tube websites. However, after years of development, it has become a robust media platform when compared to paid video/media sharing websites. ClipBucket has the following features:

Ads manager
Content authorization
HLS streaming
Integration w/ Windows Server Active Directory
Real-time statistics
Revenue sharing
Video on demand (VOD)