I've an issue on the homepage of; http://lcpdevelopment.flourishsales.co.uk/
We have a video uploaded as a background, but on some older browsers and mobile devices the video does not play for various reasons, which is fine - but I would like to replace it with an image when it does not play.
I've tried various things but just can't figure out how to place an image over the exact space of the video, only when the video doesn't play?