protected function configure()
{
$this->setName('thumbnails:video')->setDescription('Generate video thumbnails, useful to pre-generate thumbnails in the background')->addOption('parent', 'p', InputOption::VALUE_OPTIONAL, "only create thumbnails of images in this folder (ID)")->addOption('thumbnails', 't', InputOption::VALUE_OPTIONAL, "only create specified thumbnails (comma separated eg.: thumb1,thumb2)")->addOption('system', 's', InputOption::VALUE_NONE, "create system thumbnails (used for tree-preview, ...)");
}