The best software for this is written by ecamm

Their iGlasses product works very well and describes all the ways in which you can and can not take control of the camera based on hardened apps in Big Sur, Catalina and Mojave.

• https://support.ecamm.com/en/articles/3217016-iglasses-compatibility-with-apps

The best software for this is written by ecamm - iGlasses for Mac

Their iGlasses product works very well and describes all the ways in which you can and can not take control of the physical camera based on hardened apps in Big Sur, Catalina and Mojave and making a virtual software camera to feed to other apps.

• https://support.ecamm.com/en/articles/3217016-iglasses-compatibility-with-apps