I have a BNC wire in the wall coming out of my DVR and I want to connect it to my screen. Input from the screen is either AV, VGA or HDMI. I tried to use a converter (BNC to HDMI) but the screen blinks frequently or turns the images upside down or cuts the bottom half of the images and shows it higher up than the top half.I had also tried with BNC-RCA adapter with no luck, Does anyone know how I can convert the wire so that it should work with my screen? Any advice would be appreciated.