Video URL and Embeded Code are flipped as as far as where it is used in edit-sub-gallery.php. There are two different ways folks can use the codes, but only one field should be used.
Youtube and Vimeo can generate video URLs for sites like this one.
Youtube and Vimeo can generate Embeded Code for sites like this one.
Members 
Approve 
Pages 
Galleries 
Bulk Emailer
Events 
Products 
Guests