Full Width Issue

I have set the width 100% from backend it shows a full container but the black spaces are coming around on both sides of the video. How can I get rid of that? Here is the URL of the page where I am using that live tv:
http://techturners.online/gp/%e0%a8%b2%e0%a8%be%e0%a8%88%e0%a8%b5-%e0%a8%9f%e0%a9%80%e0%a8%b5%e0%a9%80/

Please have a look at the screenshot(http://techturners.com/livetv.png). I am talking about the black portion at the left and right side of the video.
Please reply as soon as possible.
Thanks