Zoom in firefox does not pick up the camera, what to do, how to equip the zoom?

Question

FreeBSD

At a distance, the corporate standard for communication is zoom.
I'm a backend developer, my workstation is on FreeBSD, I'm so used to it, it's so convenient for me, I don't want to change setup.
zoom from ports -- (CAVEAT: Sound doesn't yet work).
The zoom web interface in firefox works but loses the camera. webcamd is installed and configured, and pwcview catches the camera. https://www.onlinemictest.com/webcam-test/ also catches the camera. zoom in firefox camera loses -- "Your webcam doesn't start. Check permissions" Yes, I checked the permissions, they are set.
Maybe in firefox about: config you need to tweak something, it can compile from ports, but what flags do you need to set? Or maybe zoom works better in chromium? Suddenly there are kind people who have already danced this dance with a tambourine, help)). It is a pity to bribe money exclusively for a zoom laptop on windows.