Mac Mini HDTV resolution issues

Jul 26, 2012
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I really need some assistance with my display settings.
I have the latest Mac Mini connected via Thunder Bolt to my Dell U2412M which is great.
I also have a Samsung Smart TV UE32F4500 which I have in the room next door connected to the Mac Mini via HDMI (through the wall).
The issue I have is that when I try and stream a movie via the Mac to the TV using Mirroring I get black bars down the side of the TV.
No matter what I try this stays.
I have messed around with the display settings but can’t get it right.
The Dell is 1920 x 1200 pixels and the Samsung TV is 1366 x 768 pixels, which is what I select in the display settings but it makes no difference.
It’s driving me insane.
Can anyone suggest what to do?

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