Hello, I apologize in advance if I sound ignorant, but I'm not too technically brilliant. lol. We are trying to connect a Canon Vixia HF20 to OBS to livestream via YouTube. We have used this camera previously with a BlackMagic Design for use with Livestream (Procaster) and it worked fine. So now when trying to connect to OBS, the OBS software does not see it as a device. The current set up is HDMI out from the camera into the BlackMagic and a Thunderbolt from the BlackMagic to a Mac mini (High Sierra). I did the auto config wizard in OBS and entered the YouTube encoder information (key), and OBS and YouTube can see each other. My problem is that OBS seems to not read the camera. I have clicked on "add source," video capture, entered a name, but when I go into the setting for that, it does not give me anything in the drop down boxes. So all I have is a black screen. Nothing changes when I click on Start Streaming. Do I need to change any settings on the Mac mini? Do I need to do something with the BlackMagic? Is the Canon camcorder not compatible? Do I need some other capture device? Thank you in advance for any assistance.