Get thumb from a CDN via Slideshare API (need to register own)
- getThumbs.php code comes in functions.php, with API credentials
- there will be two metaboxes in post, fill in slideshow URL
- on save there will be admin notice with link to thumb, copypaste it
- call it in your theme, like:
<?php if ( !empty( rwmb_meta( 'rw_cdnurl' ) )) { ?>
<img src="<?php echo rwmb_meta( 'rw_cdnurl' ); ?>" width="210" height="143">
<?php } else { ?>
<?php the_post_thumbnail('homepage-thumb', array('alt' => '', 'title' => '')) ?>
<?php } ?>