Over-scan fix for TVs without a switch to turn it off/on

Would it be possible to add an over-scan fix, just like Kodi has?

My plasma tv has over-scan turned on and it doesn’t have a switch to turn it off.
I didn’t have this problem with previous Apple TV (v2), but now with ATV4 I am missing all for edges of the screen.
I thought that the calibrate option in the atv settings would help me fix it, but it only has a pattern to check the over-scan problem, not to fix it.
I also bought an app (Calibrateapp) that mentioned that it could help with the overscan issue, but it also only have patterns (I ordered a refund for this one).

I really don’t want to buy another tv set just to fix this issue.

Can someone share some light on this issue?