<font color='#000000'>John,
12 feet is starting to become a 'long' cable. At this length, you are creating somewhat of an antenna and should be a concerned about EMI. Having a cable with foil and braided copper shielding will help minimize EMI from entering the cable. In addition, the braided copper shield will decrease the ground resistance and help prevent current flow in the ground path.
As stated in the article, there are indeed differences between audio and video cables. Cable impedance required for component video is 75-ohms (to minimize loss and reflection). Most audio cables do not meet the geometry to create a 75-ohm cable assembly.
Shop around on line for component video cables that meet your budget. In your search, you'll find different methods of shielding, a variety of cable/dielectric diameters and materials. The article I wrote is created to outline some of the options and the differences between them as well as help you avoid some of the scams on the market.
There are many cable companies on the internet to choose from. Just be careful of the ones that talk about "strand jumping" and "cryogenic freezing" and you'll do OK.
Regards,
Stevie D
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