I've been unable to repro this on OSX and a couple of other systems I've tested.
Isaac, are you still seeing issue? If so, could you please gather a log using MOZ_LOG=MediaFormatReader:5?
I've been unable to repro this on OSX and a couple of other systems I've tested.
Isaac, are you still seeing issue? If so, could you please gather a log using MOZ_LOG= MediaFormatRead er:5?