I have just installed Jami but I cannot select the integrated webcam (notebook) in the video settings.
My system is Linux Mint 19.3, device is Lenovo ideapad 110 and the integrated webcam is “EasyCamera”, vendor is Chicony Electronics (vendor-ID: 0x4f2, product-ID: 0xb581).
I have the same problem with my HP EliteBook, here the System is Linux Mint 20. The webcam is “HP HD Webcam” but the vendor-ID is also 0x4f2, so I guess it is also Chicony Electronics. The product ID is 0xb477.
Edit: With other applications like Skype or Zoom these cameras work fine. Also an external USB-camera (Logitech) is not shown in Jami.
2nd Edit: Is it maybe because of the desktop environment? On my notebooks I use Xfce while I use Cinnamon on my desktop PC. On my desktop PC Jami works fine.