0 Replies Latest reply on Sep 20, 2018 1:15 PM by radeon64

    Radeon RX Vega 64 won't decode h.265 / HEVC codecs with 5K videos.  Despite installing LAV filters, can't enable GPU acceleration. 


      I am having problems playing 5K h.265 / HEVC Video with a Radeon RX Vega 64 and relatively new system (see below).


      • CPU utilization (like 60-70%) in Media Player Classic (MPC).
      • I hit 100% CPU utilization on my Oculus Rift despite 6 cores and 4.6GHZ.  VLC is worse. I installed PotPlayer and get similar results to MPC (60-70% CPU).
      • I have tried to install LAV Codecs and attempt to change video player settings to dump control to the GPU to no avail.
      • I have also read about the Radeon RX Vegas being able to only hardware decode 4K video @ 60hz, so 5K may not be supported?  It seams ridiculous that I couldn't easily play back a video w/ a 6 core 4.6GHZ machine w/ a pricey graphics card.


      For example, in MPC I have the following settings:

      View-->Options-->Playback-->Output-->DirectShow Video: Enhanced Video Renderer (custom presenter)

      Lav Filters set to:

      Video Settings->Hardware Decoder to Use: DXVA2 (copy-back) and HD and UHD(4K) are checked along with H.264 and HEVC and HEVC10.

      However, Active Hardware Accelerator always displays "<none>".


      Any ideas on how to ensure that the Radeon decodes HEVC / h.265 5K files?  The NVIDIA people seem to have no problems and set their Hardware Decoder to NVIDIA CUVID.


      5K HEVC File Specifications
      Resolution: 5408 x 2704
      Format : MPEG-4
      Format profile : Base Media / Version 2
      Codec ID : mp42 (mp42/mp41)
      Overall bit rate mode : Variable
      Overall bit rate : 30.3 Mb/s
      Format : HEVC
      Format/Info : High Efficiency Video Coding
      Format profile : Main@L6@Main
      Codec ID : hvc1
      Codec ID/Info : High Efficiency Video Coding

      System Specifications
      CPU: Intel i5 8600K @4.60 GHZ (overclocked)
      RAM: 16GB
      Mobo: MSI Z370 PC PRO
      GPU: Radeon RX 64 Vega
      Radeon Software Version: 18.9.2