Followed the link, that's looking good, seem's that all I need is multi' RCA plug cable from the switchable Scart adaptor, which I have.
I take it there is some electronics in that USB plug shown at Amazon adv'.
Will give that a try, cheap enough. Don't use the Hdmi, well not yet.
Set up is SkyFreesat, Freesat, Freeview, continental viewing via rotating dish, 32 Satellites. All switchable through Scart switch box. (five remotes) Phew!! To 625
line AIWA crt TV. Excellent results. Just reckoned if I break into Tv scart lead I can copy from all sources. Let you know if it works. Jackgrogan@gmail.com,london,UK