4k HEVC jumpy, CPU maxed with GTX 1060 but MPC-HC with LAV&MADVR working fine!

[MrPedroG]

My 4k video is stuttering on OpenPHT, but not on other players:

OpenPHT latest version 1.7.1 running on Win 7 x64 Ultimate. PMS 2.5.6 running on Win Server 2012 R2.

I have tested with 2 different media files, both HEVC 10bit 4k.

With MPC-HC, LAV and MADVR I had to update them all to latest versions but it works like a charm. No load on CPU, all load on GPU video engine (GTX 1060).

With OpenPHT, same media files on same local network location, it stutters and loads CPU 100%. I have enabled DXVA acceleration, local HEVC decoding all resolutions. Not sure what other settings I may have to tweak.

Note, not sure if relevant: currrently TV is only 1080p; 4k TV has not arrived yet. I am just testing. Perhaps the renderer having to downscale is the culprit?

Thanks for your help and thank you to all the developers for all the great work.

Pedro

[alirz1]

Same issue here. Mostly with direct play of .TS files. This used to work fine in the past.

[dan-the-man-nz]

MrPedroG if you download http://mirrors.kodi.tv/releases/win32/old/kodi-15.2-Isengard.exe which is Kodi Isengard which is what openpht is based off on windows, same problem?

alirz1: unless your TS files are HEVC 10bit 4k, its not the same problem, please create a seperate issue for that.

[alirz1]

@dan-the-man-nz They are.

[dan-the-man-nz]

i was curious, i downloaded the video shown in mediainfo, its far from smooth on my system in both openpht and the latest kodi beta.. i dont really have the right hardware to make that file work tho

whats your hardware specs anyway?

[MrPedroG]

You need HEVC HW decoding. In my case I have a NVIDIA GTX1060. Any Pascal GPU should do. Also, Intel Kaby Lake integrated graphics should do as well.

Still, my point is that it works with other media players (MPC-HC), but not with OpenPHT. I think I tried with Kodi and it did not work either, but I am not 100% sure. I will double check this as soon as possible and post result.

[MrPedroG]

I have upgraded OpenPHT to 1.8 and I am still having the same issue. I have tested with 2 different media files, both HEVC 10bit 4k. MPC-HC, LAV and MADVR work like a charm. No load on CPU, all load on GPU video engine (GTX 1060). With OpenPHT, same media files on same local network location, it stutters and loads CPU 100%. I have enabled DXVA acceleration, local HEVC decoding all resolutions. Help is appreciated. (Note - OpenPHT latest version running on Win 10 x64 Pro. PMS 2.5.6 running on Win Server 2012 R2)

[jrizz43]

Same issue with openpht, 100% cpu load on a 4k, 10bit h265 video, would love to offload some of that to my gpu.

[MrPedroG]

Update: Latest version of Kodi (I think it's the one called Krypton) plays everything fine. So it seems to me that OpenPHT has some catch-up to do vs. Kodi. Question would be: when will OpenPHT be updated so that it matches what current latest Kodi version can do?

Thanks