Take a look at this test code:
<!doctype html>
<html>
<body>
<video id="v1" autoplay="autoplay"></video>
<script>
navigator._getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
navigator._getUserMedia({video: true}, function(stream) {
document.getElementById('v1').src = URL.createObjectURL(stream);
}, function() {});
</script>
</body>
</html>
Check out the screen recording of how firefox 28.0 handles it. The camera being used is a Logitech C210. It functions properly on skype and chrome. This issue is specific to a computer running windows 8, as it works on another computer with windows 7. I have submitted a bug report. Any ideas or insights?