macOS Catalina 10.15+

To grant screen recording access:

1. Go to Apple menu > System Preferences > Security & Privacy > Privacy > Screen Recording.
2. Check the box next to the browser you want to grant screen recording access to.
3. You also need to disable Screen Time limits for the camera:
4. Select Apple menu > System Preferences > Screen Time > Content & Privacy > Apps.
5. Ensure the checkbox for the camera is selected;
6. Select "App Limits". To use the camera with an app from the list, make sure the "Limits" checkbox is not checked.
7. Save the settings and restart your browser.

If these settings are grayed out and cannot be modified, you need to disable the protection. Click the lock icon to unlock this preferences pane. You will need to enter an administrator name and password.