Thanks for this information, you were fast ! On which page did you find that ? I searched (rapidly) but didn't see it.
I don't know anybody who has a better VCR than mine and as I don't capture a lot of VHS, I'm not gonna buy a new one just for a few tapes.
But now we know what signal arrives to the dvd, one problem solved.
Still have to see if there is a difference between dvd and capture card's CVBS treatment.