Does it refresh the entire browser page when the web cam inage refreshes?
If not, then you can use a meta redirect tag in a $Head->AddString to pass the browser somewhere else after 300 seconds--<meta http-equiv="refresh" content="300;url=http://bored.com">
Thanks Wallphone, I remembered the webcam page itself is in an iFrame so I've done just that, however I'm looking into embedding directly into a discussion. Users don't have access to creating iFrames.