S-video is split up to the different colors, rgb and brightness hue and the rest of the signals, each on it's own wire
the VHS connector is all of them combined, that's why the SVideo is the better one, as the signals are clearer and better quality
i don't think it is a digital signal thou.
equipent with SVideo connectors is moe expensive and less common, the wire itself is also more expensive, thou better quality
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If it doesn't work, PLUG IT IN!