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Radeon RX 4XX/5XX standalone system, AMDRadeonX4250.kext (GVA support H264) does not support HEVC HW

Joined
Oct 23, 2010
Messages
970
Motherboard
GA-Z77X-UP5-TH
CPU
i7-3770K
Graphics
RX 580
Mac
  1. iMac
  2. MacBook Pro
Mobile Phone
  1. Android
  2. iOS
...but it won't use the GPU when transcoding a DVD...
DVD ???
What's a DVD ??:lol:

Never tried transcoding anything to MPEG2.
It probably will not work as GPU's do not support "legacy" codecs
 
Joined
Mar 26, 2011
Messages
3
Motherboard
ASUS Sabertooth P67
CPU
Intel i5 2500k
Graphics
ATI Radeon Nitro + RX 580 8 GB
Mac
  1. iMac
Hi guys,
I hope someone can help me
First of all, my components are :

Asus Sabertooth P67
Intel i5 2500k
Ati Radeon RX580 Nitro+
SMBios : iMacPro1,1

Everything works perfectly on Monteray and BigSur, except h264 rendering ... VideoProc (everything is green and supported) , Davinci resolve, FCPX, Mediaencoder... every single program freeze and then restart the computerwhen try to render anything in h264. H265 working perfectly.
I tried to change smbios, tried iMacPro1,1 , MacPro6,1 and 7,1, same thing.
Tried several bootflags in bootloader, and nothingworks
Just to say, OPencore is on the latest version, as all the kexts.

I hope someone have some idea how to resolve this.

Thanks in advance!
 
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