My video sources were working fine before. I was using 2x c920 and an ms3000. The MS3000 source that was there and working, stopped working so i removed it and tried to add it again. Ive also tried to add the other 2 webcams (the ones that still show video) and those are also not working

2 c920s working

trying to add cn20

trying to add ms3000
I tested the webcams in ghub (c920s) and all 3 in the windows webcam program and they seem to be working.
aAy help would be appreciated.