Does not work on Linux Mint

[claudemontreal]

I've installed OBS, V4L2 Loopback, obs-v4l2 sink, v4l-utils.

I did: sudo modprobe v4l2loopback devices=4

Then:
v4l2-ctl --list-devices

Which gave me:
Dummy video device (0x0000) (platform:v4l2loopback-000):
/dev/video2

HP HD Webcam: HP HD Webcam (usb-0000:00:14.0-7.2):
/dev/video0
/dev/video1

I go into OBS, i go into Tool, v4l2 video output, I enter /dev/video2. Firefox does see Dummy cam (0x000) but nothing streams. I'm stuck. I went over like 20 different tutorials. It ends either with error messages or with nothing streaming.

[IAmV0id]

sudo modprobe v4l2loopback video_nr=10 card_label="OBS Video Source" exclusive_caps=1

Try this, I found this on the obs-v4l2 sink github. The exclusive caps enables it to work on browsers AFAIK. I'm able to use the virtual cam on firefox.