I've searched the Internet for hours and almost everything was $ 500 and above.
Maybe we can find some other way? - They read it here first:
Antwort von Markus:

Not really. For composite satisfies an A / D converter s.ca. 170 ¬ (eg
Canopus ADVC-50), Component verlangt nach Geräten s.ca. 1.300 ¬ (z.B.
Canopus ADVC-500). Be as critical image content, so that you (read: the average audience of the DVD) would see the difference?