Brightness flicker: Capture card or VirtualDub settings?

[atab]

Hey all.

My normal workflow is a Samsung sv-5000w VCR -> StarTech SVID2USB232 -> VirtualDub x64 (on a Windows 11 laptop). Not ideal, but what I have for now until I can afford a better setup. I'm archiving only family footage.

Recently I found a Sony CCD-TRV11 camcorder and just got a replacement power supply for it. When I viewed some 8mm tapes through the display, I noticed a few differences compared to the captures I was getting.

1. The hue was a lot stronger on the display. Everything looks more vibrant.
2. The quality was a lot clearer than what I was getting off of my VHS tapes.

This made me wonder if I was having issues with my VCR or my capture card.

I tried the following two setups.

1. Camera -> VCR -> Capture Card -> VirtualDub
2. Camera -> Capture Card -> VirtualDub.

There's an extremely noticeable brightness flicker(?) where the color isn't stable during some videos. This occurs in both setups above. Because of this, I think I'm having issues either with the cheap capture card or my VirtualDub settings are off. The only other thought I have is maybe my component cables need to be insulated more?

Attached a small clip from one of the recent captures from the camera showing the issue.


EDIT: I just tried using OBS for comparison and the issue isn't present there, this makes me think it's related to VirtualDub.

[atab]

Follow up to my thread earlier.

Today I received a different capture card in the mail, the I-O Data GV-USB2.

The issues above vanished when I swapped to this capture card.

My previous capture card was the Startech Svid2usb232. I'm not sure if mine was defective or the quality is poor, but I hope this serves as a warning for others planning to cheap out on their capture card. The I-O Data GV-USB2 obviously isn't the top tier choice, but from my testing today it's miles better than the cheaper Startech card.

Cheers.