<description><?php echo $caption; ?></description>\r
<pubDate><?php echo date("r", $image->time_created); ?></pubDate>\r
<guid isPermaLink="true"><?php echo $image->getURL(); ?></guid>\r
- <media:content url="<?php echo $base_url . $image->guid . '&size=large'; ?>">\r
+ <media:content url="<?php echo $base_url . $image->guid . '&size=large'; ?>" medium="image" type="<?php echo $image->getMimeType(); ?>">\r
<media:title><?php echo $image->title; ?></media:title>\r
<media:description><?php echo $caption; ?></media:description>\r
<media:thumbnail url="<?php echo $base_url . $image->guid . '&size=thumb'; ?>"></media:thumbnail>\r