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If you see an option to change the screen resolution, you can choose the one that matches the dimensions of your TV or projector. From here, you can use the slider to adjust the overscan or underscan setting. So if you don’t like the stretched look, you can go to number two. While mirroring your Mac to a TV or projector, go to System Preferences > Displays. Of course, as you can imagine, this will likely cause your SD picture to look, well, stretched and that can get annoying after awhile. This will make every channel’s picture stretch across the entire screen, regardless of whether it’s in SD or HD. When you find this setting, click on the Feature that says Wide or Zoom. Every TV is different, but you then will look for a setting that says Format or Ratio, or something that conveys that you will change the size of the picture on the screen. One, you can go into your TV’s menu and click on the Picture setting. There are two things you can do when this occurs.
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This site is supported solely by your purchases from Amazon. Need to buy something today? Please buy it using this link. Basically, the standard-definition picture is not programmed to fit your entire screen. They are known as ‘Pillar Boxing’ and they will show up on your screen when your TV is set for a widescreen, HD picture, known as a 16:9 aspect ratio, but the show is in standard-definition, a 4:3 aspect ratio. Helen, those black bars are not your TV’s fault.
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