Trouble capturing single virtual tap video from VGA

I may have one or two issues with my virtual tap. It seems like going from one VGA to HDMI converter it works perfectly fine but going through a different one it does not. They both look like the same style physically but they have different brand names on them. One is brandless the other has the name Oinnex. I believe it's probably an issue with the fact that my Virtual Boy outputs 800x600 and the oinnex doesn't know what to do with it. You know of any either VGA capture cards or VGA to HDMI converters that can properly deal with 800x600.

The picture shows up for a few frames on the capture and then disappears.
 
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