I couldn't get this plugin to work with YouTube vids (also unsuccessful trying one Vimeo vid). The embed height was ridiculously tall (and wide, extending off the viewable width) and reducing ALL the media settings did nothing.
If you can help, can I still safely use the plugin without loss of page loading speed on the blog or anything else? If you can't can you recommend another plugin?
The goal is to get this to work in MailChimp.