Where to see Video Output of Droidcam in Ubuntu

I am submitting this question after searching a lot. So please help me.

So I have successfully installed Droidcam both on my Ubuntu 18.04 and android device. I have connected both through USB cable run adb devices and device found. Press connect on Droidcam client on PC side. It show no error. I opened https://meet.jit.si/ in Firefox and hit run. It asked me permission to access droidcam for camera to share. I allowed. But It is just a black screen. Output of grep v4l2loopback_dc

AAA@AAA-NCHS-series:~$ lsmod | grep v4l2loopback_dc
v4l2loopback_dc        24576  2
videodev              184320  3 v4l2loopback_dc

Please help what I need to do more. I just want to connect through USB only and not through Wifi. Further please also provide detail to see this video output in OBS studio. Thank You