title: How to get premmision to access android phone camera under Debain
body: <pre>[video4linux2,v4l2 @ 0x7e0a0] Cannot open video device /dev/video0: Permission denied
  /dev/video0: Permission denied
  </pre>
  
  <p>I am getting this error message when I am trying to list video formats supported by phone camera using ffmpeg command</p>
  
  <pre><code>ffmpeg -f v4l2 -list_formats all -i /dev/video0
  </code></pre>
  
  <p>or</p>
  
  <pre><code>root@localhost:/dev# v4l2-ctl --list-devices
  Failed to open /dev/video0: Permission denied
  </code></pre>
  
  <p>Is there any way to change access premissions for /dev/video0 and /dev/video1?</p>