Update in case anyone else has this problem. Turns out the Samsung MU6290 doesn’t support composite directly from the Genesis. I found out that the reason the OSSC wasn’t registering the video feed was due to the Genesis 1 adapter. Apparently it was not snugly connected to the cable. I noticed there was a 1/8 inch gap between the connectors. It is just a super tight connection and I felt like it was snugly in there, but apparently it wasn’t. Once I pressed that together a little better, everything worked with the OSSC.