IF VIDEO WAS OK AT SOME PONT IN PAST, THEN CAMMERA BUILT IN ILLUMINATOR HAS GONE BAD (LIGHT BULBS BURN OUT YA KNOW) IF VIDEO WAS NEVER GOOD FROM START YOU HAVE ASKED TOO SMALL A ILUMINATOR TO ILUMINATE TOO LARGE AN AREA , ADD MORE ILUMINATION TO AREA OR REDUCE OBJECT RANGE THAT CAMMERA TRIES TO SEE
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Adjust brightnesd and contract or by infared lights
IF VIDEO WAS OK AT SOME PONT IN PAST, THEN CAMMERA BUILT IN ILLUMINATOR HAS GONE BAD (LIGHT BULBS BURN OUT YA KNOW)
IF VIDEO WAS NEVER GOOD FROM START YOU HAVE ASKED TOO SMALL A ILUMINATOR TO ILUMINATE TOO LARGE AN AREA , ADD MORE ILUMINATION TO AREA OR REDUCE OBJECT RANGE THAT CAMMERA TRIES TO SEE