In my configuration the Transcoding Settings Tab shows Intel QuickSync inactive / greyed out.

I do however use Intel QuickSync with Nero Video 2016 and have proven through CPU-z that the embedded Intel GPU in my i3770 gets loaded when transcoding videos with Nero with the Intel QuickSync flag set.

I suspect that the presence of my embedded Intel GPU is not detected by Mezzmo 5 due to the fact that my monitor is connected to a separate discrete AMD PCIe GPU. My embedded Intel GPU isn't in use unless applications like Nero make use of it. I was hoping that Mezzmo 5 would be able to do so as well.