How to adjust screen margins on a rooted Android device?

Question

Android

All good. I can not find a way to make friends with my TV set-top box with a CRT TV. The fact is that on such TVs the image is cut off along the frame, from which part of the interface is hidden, as it were, behind the screen. I know about DPI, since there are root rights on the device, I made a smaller value, because the TV is small. The only question left is how to change the indents from the edges of the screen, where some of the pixels disappear.

Answer 1

Try it through adb:
I set the values ​​\u200b\u200bin an example, select it yourself for your TV.
If something goes wrong, you can reset:
adb shell wm overscan reset