I did a lot of research about Motionbox. I looked at many HD videos and finally decided to purchase a Premium Membership for $19.99 / year.
There is ONE aspect of the site that I prefer over Vimeo - embedding HD video without limitations - however I have found that the HD videos I have uploaded are CHOPPY when played back. The SAME videos play SMOOTH on Vimeo and YouTube Hd.
Has anyone else using Motionbox had this problem?