Do you have wild screen? if the answer is yes then you should read this ,
you may noticed that in some channels that doesn’t support wild screen two big black lines in both left and right side

See Example

so now how to remove this two lins in the side? that is easy thing to do

Right Click on the mytheatre window and choose Setting then General Setting
From the General Setting window under the Diplay Tab Check on Optimize Video Size For Wild Screen

Now After Doing this step you will noticed that the picture now is diplayed in the full screen mode

of course there is disadvantage for this method first thing you ‘ll noticed is that on top and bottom side there is little bit cut in the picture that is normal i think because not all channels support wild screen

but any way that is better that the two big black lines on the left and right side

Now enjoy watching all channels on the wild screen