Recently I noticed a certain looping full-screen video tag breaking on one computer - A Win8 system that apparently has problems with older drivers for the amd/nvidia graphics.
The odd thing is, I would usually get an error (with videoelement.error) in Chrome, yet when the video element broke in Firefox I would get no videoelement.error or videoelement.pause, despite the fact that the video was broken (showing placeholder image).
Are there any dev-tools that help to debug this sort of failure that seems to be limited to specific machines/specific graphics card combinations? Or is there a debug version of Chrome/Firefox that will give enough debug information to diagnose graphics problems like this?