Hi,
I'm currently trying to capture SECAM VHS tapes (I'm in France).
I currently use VirtualDub to capture the VHS, works like a charm.
My VCR is an Akai VS-G460 (Pro GX4) it's in great condition and works perfectly.
It has an SCART output, I plug an SCART adapter inside, which allows to output SCART to Composite/S-Video and vice-versa.
This kind of adapter : https://batterie-boutique.fr/media/image/41/95/41/2b8594f6-5630-4996-b2b9-66c3c95386ff-50312-tif.jpg

The cables are not faulty, neither is the adapter.

In VirtualDub, I could capture the color with composite but whenever I go into S-Video mode I can't.
Aside from that S-Video works on my Hi8 Camcorder and the S-Video outputs color.
To be sure the S-Video output works on my VCR I plugged it into my CRT and the S-Video outputs color.
I checked PAL_B, SECAM_B, SECAM_L. Nothing is colored in VirtualDub.

Where should I investigate ?

I looked around and some told it had to do with the NTSC playback on PAL VCRs.
My capture card is an August VGB100 by the way.

Thanks for considering