How can I use a 555 timer to disconnect and reconnect an RCA video connection?

I have created a 555 timer circuit that activates for 60 seconds when the switch is activated and then turns off. It works fine for a 12v circuit. I am wondering how I could set this up to turn on an RCA video connection when the timer is activated? In other words, I plan to splice open an rca cable and somehow... show more I have created a 555 timer circuit that activates for 60 seconds when the switch is activated and then turns off. It works fine for a 12v circuit. I am wondering how I could set this up to turn on an RCA video connection when the timer is activated? In other words, I plan to splice open an rca cable and somehow get the video signal to only be on when the 555 is activated for that 60 seconds at a time.
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