/**
  * Detect if FFmpeg is available on the system.
  *
  * @return void
  */
 function autoDetect()
 {
     static $output, $status;
     //get the absolute location first:
     $path = zmgVideoTool::detectPath();
     //execute test command
     @exec($path . 'ffmpeg', $output, $status);
     $res = false;
     if (!empty($output[0])) {
         if (preg_match("/(ffmpeg).*/i", $output[0], $matches)) {
             zmgToolboxPlugin::registerError('FFmpeg', 'FFmpeg ' . T_('is available.'));
             $res = true;
         }
     }
     if (!$res) {
         zmgToolboxPlugin::registerError('FFmpeg', T_('could not be detected on your system.'));
     }
     unset($output, $status);
 }