Yeah that was the first thing I tried. It for some unknown reason seems to work now with no changes done from my side. But something was definitely buggy – because I called my hosts at meditaemple to test on firefox and while it did load the support guy did mention that it was loading much slower than on other browsers.
I’m using only mp4 for background video – no ogg or webm …so I suspect that perhaps there may be an issue with firefox considering it to be resource heavy. I think for most browsers these days mp4 is good enough, but I’ll play around and test that out. But thanks for the follow up.