cjdelphi:
exactly... and if it can't easily be exploited what use is it.... unless there's a breakout and some kind of processor to give the arduino a low bit data feed?...but that besides, would you be interested in this kind of thing? (anyone for that matter)
I personally wouldn't be interested in having my TV control room lighting, sprays of water and so on. My TV already produces pictures and surround sound, which is all I want.
If you want to implement this sort of extra channel then it seems to me you need to start by figuring out where these signals are coming from. Whatever solution you come up with to receive them is pointless if there is nobody sending them. Once you have got that part figured out, you need to go find a community of people who know about video stream processing who may be able to explain the algorithms and hardware needed to do what you want. I'm sure you'll find it needs something a lot more powerful than an Arduino.