I also finally enabled QuickSync... a month too late as I really could have used this when I was finishing my FCPX project.
I followed
@pastrychef instructions:
If you follow through with the links (above) you realize that his instructions need updating. The IntelGraphicsFixup.kext has been replaced by WhateverGreen.kext in combination with Lilu.kext (version 1.2.5 min). I tired to DL the WhateverGreen.kext but all I could find in the link was the XCODE project which would not build... so I was trying to find somewhere to DL a compiled copy of WhateverGreen.kext. I discovered that MultiBeast now contains that kext! So I DL'd the latest MB and then I opened MultiBeast NOT by running that app but by using the Finder to Show Package Contents to find the installer with the MB app. I then installed WhateverGreen using THAT installer package.
Then I realized that I had multiple copies of Lilu.kext AND IntelGraphicFixup.kext so after cleaning up the SLE and LE copies I made sure that WhateverGreen.kext AND Lilu.kext were only in the EFI/EFI/CLOVER/kexts/Other folder and rebooted.
I checked for a working QuickSync using the tried and true method of using MacX Video Converter Pro app.
View attachment 348165
Phew! What a workaround....
/Bob