How to get hardware video decoding with pascal GPU (iMac 14,2)

[fadedmaple]

I`m using a haswell CPU on z87 motherboard with a GTX1060.(hd4600 deact.)
SMBIOS iMac14,2 Mac-27ADBB7B4CEE8E61
10.13 (17A405) with web driver 378.10.10.10.15.120.

My English is not very good, After I read these links I'm still very confused.
https://sourceforge.net/p/nvidiagraphicsfixup/svn/HEAD/tree/trunk/FAQ.md
https://github.com/vit9696/Shiki/blob/master/Manual/FAQ.en.md
https://github.com/vit9696/Shiki/issues/5

Seems like shiki.kext should be use after hardware video decoding works?
But in the nvidiagraphicsfixup faq it says:To get hardware video decoding you are likely to need shiki.

I try to install lilu.kext and nvidiagraphicsfixup.kext but doesn`t work.
when i running ioreg | grep IMEI and ioreg -l | grep platform-id there is no output.

What kext do I need?(nvidiagraphicsfixup.kext imac.kext shiki.kext ...)
It is necessary to enable the builtin Intel GPU hd4600?
I will appreciate for your reply.

 

[BreBo]

I will appreciate for your reply.

Check iTunes Protected Video Black Screen Solution (HDCP)

 

[fadedmaple]

Check iTunes Protected Video Black Screen Solution (HDCP)

Thanks, I have tried this, iTunes Protected Video works well.
But when I use MPV with two command.
mpv --no-config -v --hwdec=videotoolbox --cocoa-force-dedicated-gpu=yes filename.mkv
or mpv --no-config -v --hwdec=videotoolbox filename.mkv
it will output this
[ffmpeg/video] h264: VideoToolbox session not available.
....
[vd] Falling back to software decoding.

and the VDADecoderChecker output is

VDADecoderCreate failed. err: -12473
An error was returned by the decoder layer. This may happen for example because of bitstream/data errors during a decode operation. This error may also be returned from VDADecoderCreate when hardware decoder resources are available on the system but currently in use by another process.
VDADecoderCreate failed. err: -12473