I am responsible for developing a html5 game in which m4v videos are loaded and played using the jplayer jquery extension. Everything was working ok until Firefox 11 Mac was released (it works in Windows).
The streams also work when FireFox Mac is started in Safe Mode.
I should also mention that the audio will stream but not the video outside of safe mode.
It isn't a problem with my plug ins, I've tried disabling them all outside of safe mode and it still wont stream.
So my question is, what can be blocking the video streaming in normal mode that is switched off when starting Firefox in safe mode? Any suggestions?
I can't post the URL of the game, it's unreleased and I don't think my employers would be too happy!
Safe mode disables all extensions, the JS JIT and hardware acceleration of painting, and maybe a few other things.
I'd try testing disabling the JIT manually and disabling hardware acceleration.