title: Unable to feed Virtual Camera into Android Emulator using Webcamoid and OBS Studio on ubuntu 20.04
body: <p>I am trying to feed a recorded video into Android Emulator using virtual camera by Webcamoid. I am using Webcamoid 8.6.1. I have also tried using OBS Studio <a href="https://stackoverflow.com/a/65072068/1355722">[1]</a>. I can see the virtual camera footage in softwares like Zoom, but the android emulator doesn't seem to find the virtual webcam.</p>
  <p>This is the output I am getting from the following commands.</p>
  <pre><code>$ v4l2-ctl --list-devices
  vc1 (out) (platform:akvcam-2):
      /dev/video2
  
  vc1 (platform:akvcam-3):
      /dev/video3
  
  OBS Virtual Camera (platform:v4l2loopback-000):
      /dev/video4
  
  USB Camera: USB Camera (usb-0000:00:1a.0-1.4.3):
      /dev/video0
      /dev/video1
  
  $ ./emulator -webcam-list
  ERROR   | _camera_device_open: Camera '/dev/video2' is not a video capture device
  List of web cameras connected to the computer:
   Camera 'webcam0' is connected to device '/dev/video0' on channel 0 using pixel format 'YUYV'
  </code></pre>
  <p><code>vc1</code> was created inside Webcamoid. I was expecting it or the one created by OBS Studio to show up as <code>webcam1</code> or <code>webcam2</code>.</p>