I've downloaded the trial version of Mezzmo and have to say that it seems to be best streaming software I've seen so far.

I am streaming to a Panasonic Viera TX-P42GW20.

When I play movies in mkv containers, there is a aspect ratio problem. The movie is stretched at the top and the bottom (no black bars where there should be). I've read now a lot of times that this problem occurs when this TV is playing HD movies in non standard resolutions.

So, my questions is how to configure Mezzmo so that the TV shows the movies in the correct format.