hide media url

Hi, I put in my pages some images to which are linked a few videos. These videos open in a new window and I need this window not to show the entire url: http://www.sitename/wp-content/uploads/2014/02…as it does now. The goal is that viewer can see the video just once, when they click on the image on my page, and after they close the page they cannot get it back even if they copy the url of the video. Is there any plugin that allow this? I tried several ones but didn’t reached the point. With pretty link I have a shortcode for the video but if I link it with the function “open in a new tab” the new tab still shows the complete url. Please help! I know we all love free sharing but this quest is due to a real necessity for this site!