The relationship is direct. The greater the video resolution the more pixels it requires. Digital imaging and computer screens address each and every pixel on the screen directly. you can decide...
Using a Windows computer, you can right click an empty space on your desktop, and click properties, then click the Settings tab, near the bottom of the window under "Screen Resolution" you will find...
Lower resolution. Because if you buy a large thin TV and use the antenna you'll get some poor quality due to the size of your 68" TV. The smaller the size if the better cuz the pixel's will be better...