Funny, I was literally trying to do this today with my VHS player, a Panasonic NV-VHD1B. It has SCART outputs and the OSSC picks up the signal which when a tape is playing is shown as 623i at 50Hz but this does flicker every few seconds as it loses sync. In fact in my case the red “unstable sync” is lit up. Unfortunately the only other video output from this unit a composite.
Would a RetroTINK work in my case with the composite signal?