你用了最新版whatevergreen.kext吗?不用这个驱动不起来。
我是6700K+GTX1060,在bios打开核显,不用这个kext的情况下,VideoProc显示能硬解,但FCP导入H264素材只要一播放,Intel Power Gedget中核显频率马上会出现提升,然后系统瞬间崩溃。说明这个时候能调用核显,但核显运转故障。
但是使用whatevergreen后,使用Intel Power Gedget监测核显频率,会发现在导出视频和预览h264素材的时候核显都能正常变频和睿频,这样应该是完美硬解了。
你可以加个whatevergreen再试试?
“I didn't understand why at the time, since the 2017 iMac actually has the hardware to support hardware 10-bit HEVC encoding. However, if Vega truly doesn't support this, they couldn't very well implement it officially in the non-Pro iMac and not have the iMac Pro support it as well.”
Below are some test export times on my 10-core iMac Pro and 2017 iMac 27 (min:sec)
iMac Pro export 60 sec 4k/29.97 ProRes to 4k H265 8-bit: 00:43
iMac Pro export 60 sec 4k/29.97 ProRes to 4k H265 10-bit: 22:02
iMac Pro export 60 sec 4k/29.97 H264 to 4k H264 Fast Encode: 00:45
iMac Pro export 60 sec 4k/29.97 H264 to 4k H264 Best Quality: 01:25
iMac Pro export 60 sec 4k/29.97 H264 to 4k ProRes 422: 00:23
iMac Pro export 60 sec 4k/29.97 ProRes 422 to 4k ProRes 422: 00:10
2017 iMac export 60 sec 4k/29.97 H264 to 4k H264 Fast Encode: 00:38
2017 iMac export 60 sec 4k/29.97 H264 to 4k H264 Best Quality: 01:11
2017 iMac export 60 sec 4k/29.97 H264 to 4k ProRes 422: 00:36
2017 iMac export 60 sec 4k/29.97 ProRes 422 to 4k ProRes 422: 00:13
Comments:
- FCPX is obviously not using hardware acceleration for HEVC/H265 10-bit export on the iMac Pro
- The 2017 top-spec iMac is a little faster at 4k H264 export than the 10-core Vega64 iMac Pro
- The iMac Pro is faster than the iMac at export from 4k H264 to 4k ProRes
- The iMac Pro is faster than the iMac on an all-ProRes workflow