As I understand it, SVideo doesn't break up to RGB, it's chroma, luma with separate grounds across 4 pins, where as Component is 2 chroma and 1 luma and it syncs the three across the luma signal.
Any transfer regarding either SVideo or Component is going to involve the analog domain, so my recommendation (short of changing hardware) is to get a signal converter or a cheap/broken DVD recorder on ebay with the correct inputs to enable a pass-through. Your "losing" stuff anyway so if thats your top concern with copying dvds then I'd look at a DVD-ROM solution for your computer. I've seen boxes run between $100-400.
Best of luck.