// Add media:content tag to RSS feed for featured images
add_action('rss2_item', 'ytk_add_featured_image_to_rss');
function ytk_add_featured_image_to_rss() {
global $post;
if (has_post_thumbnail($post->ID)) {
$thumbnail_id = get_post_thumbnail_id($post->ID);
$thumbnail = wp_get_attachment_image_src($thumbnail_id, 'large');
if ($thumbnail) {
$mime_type = get_post_mime_type($thumbnail_id);
echo '' . "\n";
}
}
}
// Add the media namespace to the RSS feed
add_filter('rss2_ns', 'ytk_add_media_namespace');
function ytk_add_media_namespace() {
echo 'xmlns:media="http://search.yahoo.com/mrss/"' . "\n";
}
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