okay, but the fact is on the laserdisc the video is always composite video.

so the high end laserdisc players read the disc with a laser, that RF signal is demodulated into composite video then gets sent to the high end players comb filter (be "3d" or digitized with a small 2mb framestore/TBC) then sent to the S-Video output.

then capturing that S-Video output then processing it again no doubt albeit in the digital domain would not yeald a better result than say using a professional composite to digital SDI converter (which would be 10bit colour) then capturing the SDI output into a computer. then you could process that digitally (frame pull down im guessing)