Hi UtterDisbelief,
I have run through all the system definitions to no avail.
This may save you some time
#67
Ah, thanks WildWillow. You have certainly covered the ground with all that testing. I can only say thank you for all that effort!
Ironically, given your results, I would have expected the Mac Mini definitions to have been more tolerant because more than most Apple computers its output can go many different ways (displayport/thunderbolt, DVI, HDMI, VGA) indeed it was designed to be hooked up to any old monitor. The only thing for certain is the Intel HD.
I'm aware there's no solution yet... which is why I'm still one of the people out there looking more at it.
I've been digging ...
... that starts around 0x187ed in the driver. If the value passed into it is non-zero then it defaults to returning 5. It looks like it's always called that way... tedious process but I'm trying to walk it up to see more about what might be happening. Hopefully that'll lead to a more clear view of why it isn't working anymore.
I've always enjoyed a bit of hexadecimal memory/machine-code!
What niggles at the back of my mind about this is the fact that iTunes 11.1.1 on Windows 8, and on the very same hardware, displays all video content as intended.
If iTunes/Quicktime itself was the cause of black-screens etc then the Windows and Mac versions would surely share a common technique to display DRM video as that must be a standard. So why does the Windows set-up work and the Mac one, not?
Perhaps a driver issue? Well I've tried vanilla OS X and nVidia. No joy. If disabling Intel on-board completely in the BIOS will help I'll try it (need to buy a new PS/2 keyboard as USB rarely lets me get into the BIOS set-up any more) BUT it works fine in Windows...
Incidentally non DRM video plays fine. A couple of ones I bought through iTunes were DRM-free and they are unaffected. iTunes/Quicktime is making the choice not to display. So what's the trigger?
It's likely not a memory address, in my view, but a test. If so-and-so then display; if so-and-so do not, etc.