I figured out the problem. IE is fussy and requires a px after the top and left positions in the style for the video tag.

Example:

<video controls width="356" height="326" style="position:absolute; top:44px; left:314px;">

You can edit the html files with Notepad or any Html editor. I will add this fix to the next update.

If there are future problems, it would be better to create a separate topic outside of
Site Check folder so it will be more visible to people.