Originally Posted by Telemachus
The ground wire on S-video is the outside connection. The other 4 are the pins.
A cheap premade S-Video cable has grounds on pins 1 & 2, with Luma on pin 3 and chroma on pin 4.
A slightly better premade S-Video cable will also have ground on the connector shield, but also tied to pins 1 & 2.
In either case, you'd have to hack off the molded plastic strain relief to get at all the pins, unless you happen to get a cable with an overall shield connected to the barrel, and two coax cables each connected to pins 1 & 3, and 2 & 4.
What I suggested was an S-Video connector designed to be used for making your own cables, which are available for under $2 at Digikey
, from eBay
, or I can buy them locally at an electronics supply store for about $4 each.
It is also sometimes listed as a male 4 pin mini-DIN connector.