Clip-bucket
ClipBucketlite is an OpenSource & Free Video Sharing Script with enormous features. Highly efficient Admistration Panel and User friendly interface. It has all those features that a video sharing websit like Youtube & Metacafe has.
Vshare
vShare YouTube Clone is a PHP/MySQL script that allow you to run successful video sharing portal like YouTube.com, DailyMotion, Google Video, etc...