Sorry Gary, I also after a poster. I've tried a few combinations but can't get it to work. I was able to get a poster to work in the Xara player by adding the poster code at the end of the Video Source code, but yours is a little different.

This is one of the failed combos I have tried so far:

<video width="100%" height="100%" controls >
<source src="https://initiostar.co.uk/assets/F28 Movie v8 1000kbps.mp4" type="video/mp4" >
<poster="https://iflewformma.com/xara//index_htm_files/f28poster.jpg" >
</video>

Any suggestions? Thanks again.