I have a site where we will offer free and paid for videos.  I already have the entire e-commerce side worked out but what i don't know is, what is the best way to play a private video?  I tried uploading it to my server and it didnt work.  I would like them to be able to view the video pause rewind all of that but not have any ablility to share the video. 

Can anyone help me out with ideas?  Or the best way to go about allowing video on my website where it can not be shared?  Thanks for any help!