Atleast 2 ways.
Use iframe
Use javascript with timing events to update the image
Iframe is the easy way out. Just create a page which contains the meta refresh and image tag. Then create to your page:
<iframe src="image.html" style="width: 150px; height: 150px"></iframe>
And inside image.html:
<meta http-equiv="refresh" content="15">
<img src="pic.jpg" alt="">