title: How to take snapshot in vlc using command line in ubuntu
body: <p>I am using easycap DC60+ in ubuntu and watch easycap video on vlc using following command:</p>
  
  <pre><code>vlc -vvv v4l2:///dev/video1:input=1:norm=PAL-I:width=720:height=576 --input-slave=alsa://plughw:1,0 --v4l2-standard=PAL_I
  </code></pre>
  
  <p>and i want to take snapshot of vlc using command line.</p>
  
  <p>I use this command on another terminal but show error and my first instance of vlc not work properly </p>
  
  <pre><code>vlc -I dummy v4l2:///dev/video0 --video-filter scene --no-audio --scene-path /home/stoppal/test --scene-prefix image_prefix --scene-format png vlc://quit --run-time=1 
  </code></pre>
  
  <p>this error is occure</p>
  
  <pre><code>[0x19d6aa8] dummy interface: using the dummy interface module...
  libv4l2: error set_fmt gave us a different result then try_fmt!
  </code></pre>