External DSLR video feed shows up in BM Media express but no feed in OBS 26.1.2


New Member
Hello All..... I have MAC book pro running Mojave 10.14.6. I have an external DSLR Canon M50 connected to the MB pro using a legacy BlackMagic Intensity Extreme sending video signal to the laptop. I'm running OBS ver 26.1.2.

My video feed shows up just fine in BM Media Express. But when I close Media Express and try to open OBS, there is just a black screen. I have confirmed that System Preferences / Privacy and make sure OBS has permission on Video. Funniest thing is.. this whole setup was working just fine about a month ago, but it just blew up in last few weeks.

Any help would be awesome.. I just dont' understand what happened.