Ok so this is on linux (Debian 12)
This is a laptop running Debian 12.
It is a Dell Lattitude EA6530 both the camera
and microphone are built in.

Running Gnome (X11)
Gnome version 3.38.5

Graphics is
NVIDIA Corporation GF108GLM [NVS 5200M]

Sound
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)

Running Caprine 2.57.0 which is the latest version at
the time of making this report.

uname -a
Linux security 5.10.0-19-amd64 #1 SMP Debian 5.10.149-2 (2022-10-21) x86_64 GNU/Linux

So this was installed via apt

apt-get install caprine

lspci
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (Lewisville) (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 4 (rev c4)
00:1c.5 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM77 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [NVS 5200M] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)
03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 [Taylor Peak] (rev 34)
0c:00.0 SD Host controller: O2 Micro, Inc. OZ600FJ0/OZ900FJ0/OZ600FJS SD/MMC Card Reader Controller (rev 05)

Now when I go to start a call in caprine it says that it can not open
either my camera or microphone.

The exact message I get is

"Couldn't connect to your camera or microphone
Your camera or microphone are either not connected or not supported. For troubleshooting suggestions, and information on supported browsers, visit our Help Center."

But now hereis the funny thing if I do this right from Facebook
http://www.facebook.com in either Firefox or Google Chrome it works
fine!

I have tested t in both it isn't an issue with my camera or microphone because
i can get it to work perfectly fine in both Google Chrome and Firefox.

I am running the latest version of both I tested in both it.
I also run other programs like Google Meet and MeetMe
on here and the camera works just great and has no issues.

Firefox 102.5.0esr (64-bit)
Google Chrome Version 108.0.5359.94 (Official Build) (64-bit)

So the only thing that isn't working is Caprine it won't seem to "detect"
either my microphone or camera it is one of the two. I am not sure
which. Both of these are the built in camera and microphone.

This is definately something with Caprine.

A screenshot of the error in Caprine can be seen at

https://ibb.co/2sKCk4r