Such an adjustment might be in your video or quad processor. Look for units like " CCTV Color Quad Splitter Processor " and check the manuals as most do scaling.
I need help with an old RCA television model number F19251GY that I am attempting to us as a monitor for a new camera dvr home security system. I just bought a camera dvr system, but I want to use this old television as the monitor for viewing the cameras. This tv has the component connectors on the rear of the tv, but the screen screen size is missing part of the display of the cameras along the outside edge of the television. Is there any way to adjust the screen size (vertical and horizontal) for this television. I have checked the menu for tv and looked up manuals for it, but I have not found anything. Actually I have only been able to find a manual for the RCA F19205GY television not the F19251GY tv. It is a great tv and will work fine for this purpose, if I can adjust the screen size. Thank you for your help!!