How does Guangxi Radio and Television adjust the display screen size?

1. Many set-top boxes have a setup wizard when they are used for the first time, which can adjust the display size of the picture on the TV screen, such as Tian Min. If you don't set the screen size when using it for the first time, you can go to the set-top box Settings-Display or Image Settings, find the screen zoom or adjustment, and use the arrow keys of the remote control to adjust the screen display size.

2. Most set-top boxes have screen resolution settings, which can be set according to the size and resolution specifications of the TV. For example, Xiaomi Box can set 1080P, 720P and 4K resolutions in Settings-Image and Sound Settings. It should be noted that the minimum refresh rate of domestic TV sets is 50Hz. At present, the refresh rate of LCD TVs can reach above 100Hz, so you can use 50Hz and 60Hz refresh rates. High refresh rate is good for your eyesight and can reduce eye fatigue.

3. When using the built-in application of the set-top box to watch live TV or on-demand programs, if the picture is not full screen, you can press the menu key on the remote control to bring up the control menu, find the video ratio (or similar) and adjust the picture ratio. Generally, there are options such as full screen, 16:9, 4:3 and full screen stretching, and then adjust to the appropriate size until full screen is displayed.