iPad not showing poster image (Projekktor for Wordpress)

Hi,

First off, thanks for Projekktor, finding it a great asset in my wordpress adventure.

I have it successfully (and easily) working full on in Safari and Firefox, as can be seen here:

http://www.capitalistfiction.com/?page_id=249

But when viewed on the iPad, the poster image does not display: I get a black rectangle with the play arrow. Clicking that play arrow still plays the video fine -- but I'd like the poster images to draw attention.

Here's the code for each video entry on the page:

[video src_mp4="http://www.capitalistfiction.com/vids/DD1.mp4" width=496 height=318 poster="http://www.capitalistfiction.com/vids/dd1.jpg"]

I'd much appreciate any help in making this work - it's about the only thing holding me back!

Best regards,

Dan