You could always trap out a LOWER cable channel say 16, if it were public access or something that was not going to be watched then use a modulator to convert the video to rf on channel 16 and then pass it on to the main distribution amp or whatever, then all televisions in the house would have the cameras on channel 16. You can buy a channel elimination filter which would work perfectly or you can use an actual trap that would work so-so. no need to mess with the digital system and channel 117 or whatever would die with attenuation if you have a lot of splitters and cable.