HDMI features your TV already supports that you've never turned on

Fixing a buried bandwidth setting on my Samsung Frame TV sent me down a rabbit hole. If one HDMI option could change picture quality that much, I wanted to know what else those menus were hiding. I worked through every HDMI setting on every TV in the house: two Frame TVs, a Hisense CanvasTV, and a few TCL Roku sets. The ports carry far more than...

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