Hello Bi Chao,
You can play an mp4 file over secured connection using the HTTPS protocol as long as you deploy the web application hosting the Silverlight plug-in to a https web site. Unfortunately the Silverlight
MediaElement can not play resources accessible under different protocols. You can read more info
here.
Greetings,
Tina Stancheva
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>