protected function _getObjectSrc($type = 'embed-src') {
		if (empty($this->_stub['id']) || empty($this->_stub['slug'])) {
			return null;
		}

		$stubSrc = $this->_stub[$type];
		if (strpos($stubSrc, '$r2') !== false) {
			$src = str_replace('$r2', $this->_stub['id'], $stubSrc);
		} else {
			$src = str_replace('$2', $this->_stub['id'], $stubSrc);
		}
		if (!empty($host['replace'])) {
			foreach ($host['replace'] as $placeholder => $replacement) {
				$src = str_replace($placeholder, $replacement, $src);
			}
		}
		return $src;
	}