public function getVideoTags()
    {
        $this->ensureMediaGroupIsNotNull();
        if ($this->getMediaGroup()->getKeywords() != null) {

            $keywords = $this->getMediaGroup()->getKeywords();
            $keywordsString = $keywords->getText();
            if (strlen(trim($keywordsString)) > 0) {
                return preg_split('/(, *)|,/', $keywordsString);
            }
        }
        return array();
    }