Using this following code it loads perfect in Safari. However, the video is black in Chrome and Firefox. There is an image on top, it is a png with transparency.
makeDiv(930, 350, 480, 240, "<video src='LilliLogo.mp4' autoplay ></video>",);
Can you share the URL of the site here so that we can see what's happening at our end?
Retrieving data ...