HTML5 Video problem

I am using JW Player to deliver video content. IT has two operating modes: Flash and HTML5. In Flash all is fine – it works perfectly when I click the full screen mode. SO: the theme works and the player works.

In HTML5 when I click full screen – I get a black bar at the top of the screen that takes up about 35% of the screen and physically pushes the video down so I am missing aboout a third of it. Here’s the tricky part:

1 If I use only the HTML5 <video> tag to place the video it plays fine full screen. Therefore it’s not a problem with the theme.

2 If I use a different theme (e.g. 2015 still with side bar) it plays fine in full screen. Therefore it’s not a problem with the player.

It seems that (as with the Flash mode) both the player and the theme are both worrking fine in HTML5 full screen video mode.

BUT when I put the two together (Theme+JW PLayer) there is an interaction that is forcing the picture down the page. I would prefer to keep using Hemingway. Does Anders know if there is anything in the code that might be casuing this conflict?

Just for clarity there are no issues when the video plays in the player window – only when going full scree.

Thanks.