Hi Johnny,
I know it's been a while since your post, but in case this helps anyone...
This is totally a thing! Exactly as you described, EOS Webcam utility --> OBS + Virtual Webcam --> Zoom. All fine until zoom accesses the virtual webcam and then it's freeze city! But only the IOS camera, other cameras and sources are fine. Quit Zoom and after about 30 seconds, normal service is resumed.
Have tried every combination of settings I can think of.
I'm using an Intel Mac Mini running Monterey, with the latest version of EOS Webcam Utility Pro.
I found *eos-webcam-utility-1-0.pkg* online. Installed that, and now everything is back to normal.
I also tried version 1.1. No dice, that has the same issue.
Nothing in the OBS logs. As far as OBS is concerned, it's receiving a video stream from the EOS app and everything is dandy.
Seems like something in later versions of the EOS app breaks (or is broken by) Zoom.
I haven't tried this fix. https://obsproject.com/forum/threads/canon-eos-webcam-utility-fix.171398/
Perhaps that works with the later apps. But the symptom which it's reported to fix, is that the EOS utility doesn't show up as a source. I think it's a Sonoma thing anyway, but may be useful to someone searching.
Be great to know if anyone figures out what the issue is...
Ta
