Did you find a fix. I have this issue after an update to 4k brio. Works in everything besides OBS ...Another one joins the club. It's 2021 and it just happened to me too. My Logitech Brio, which I've been using with OBS 26.1.1 for months just went dead in OBS. I'm not running bitdefender, the camera shows up and works in Zoom, Camera App, Skype but will not start up in OBS. I've restarted, Plugged in and unplugged the camera - nothing,,,,,, most peculiar and more importantly most troubling as I've made OBS a huge part of my workflow through Virtual Cam as a public speaker and virtual Corporate trainer. Any new insights?
This also happened with me when i go live stream on Youtube. Every thing is fine as i go live session before that. But this time my facecam crash and i also update the OBS to latest 1 day ago.I understand something changed. Obviously this wouldnt happen if nothing changed. I have checked the USB controllers and all of them say they are working properly. Like I said before, I have restarted OBS, restarted my PC, Ive even uninstalled and reinstalled with the latest version and an older version. No matter what I do it seems OBS just doesnt recognize any cameras. The cameras work just fine on their own and in XSplit, and my PC has no viruses or any other reason to make me think its anything outside of OBS. This just really sucks because I cant stream when I should be, and I don't know XSplit very well. Looks like I'm gonna have to brush up on it.