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No HEVC 4K 10-bit DXVA2 support?
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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Why can't PowerDVD 15 play HEVC 4K 10-bit with DXVA2?

Nvidia GTX 960 fully supports it undecided
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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undecided
nullack [Avatar]
Member Joined: Dec 29, 2010 04:09 Messages: 139 Offline
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Do you have references you can site about the gtx 960s 10 bit support?

Im not so sure

Using LAV filters/splitters on MPC-HC and the nvidia cuvid, on all 4K 10 bit hevc samples I have there is zero gpu video engine acceleration. Then in DXVA2 native mode the same result.

Im not sure if the gtx 960 video engine can actually hardware decode 10 bit video

So its up too software. And 2160p60 HEVC 10bit is going to send your CPU into hell
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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Use MPC-BE or MPC Video Decoder to play it with DXVA2 native.
For LAV, you have to use DXVA2 copyback.

This message was edited 1 time. Last update was at May 26. 2015 04:27

nullack [Avatar]
Member Joined: Dec 29, 2010 04:09 Messages: 139 Offline
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Yes I can see your right, plain as day that the GM206 chip does do Main 10. Ill experiment with the renderless mode on DXVA 2 copy back within LAV



It kinda makes sense this is an issue for you as Im aware that 2160p60 Main 10 HEVC is part of the Ultra HD Bluray specification. Then everyone will be using 10 bit video in the consumer space.



I wonder if Cyberlinks plan is to flog another product, say powerdvd 16, with amongst other things has a 2160p60 Main 10 HEVC DXVA decoder. Good way to milk the masses I guess, as it's a shame that feature is not in Cyberlink 15.
nullack [Avatar]
Member Joined: Dec 29, 2010 04:09 Messages: 139 Offline
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Pjay to report back on your suggestions that I've been experimenting with. I found a major difference between the released x64 LAV and MPC-HC, and the nightly builds of both. So Ive stuck with nightly builds for both x64 LAV and x64 MPC-HC.

I have a video sample that is top end and absolutely kills my 8 logical core i7 CPU. Its 2160P 60 FPS, Main 10 with the 10 bit colour and its level 5.2 on HEVC with some fairly high bitrates.

Using the nightly builds of LAV and MPC-HC, I'm pleased to say even with DXVA 2 copyback I get zero dropped frames or stutter and even have some headroom left in the gpu video engine, the gpu memory controller and so on.

It looks simply stunning on my curved 65" UHD display

Thanks allot for your suggestions now I'm already for 10 bit UHD content on HEVC MAIN 10. I love my GTX 960.
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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Your welcome, GTX960 can play up to 120FPS
nullack [Avatar]
Member Joined: Dec 29, 2010 04:09 Messages: 139 Offline
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Thanks again Pjay I think Ive found an internet video expert and a friend in you Im from Australia, so please forgive my convict english in this sunburnt country



Pjay do you happen to know why mate 10 bit HW accel is only available on copy back DXVA2? Why not cuvid? Or native?



Also, would you happen to know sir with the open source media title big buck bunny remastered in 4K like here



http://bbb3d.renderfarming.net/



Why that wont play with my setup in full HW accel? It resorts to software decode. I dont want that. Its a 60 FPS 3D video, but its only in H.264 and I thought the GTX 960 did that no sweat with 3d h.264 like 3d bluray?



Cheers

This message was edited 1 time. Last update was at Jun 01. 2015 05:16

nullack [Avatar]
Member Joined: Dec 29, 2010 04:09 Messages: 139 Offline
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Thanks PJay for your personal message

Ill check out what ya sent me
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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And still no change in PowerDVD 16 ...
VictorLS [Avatar]
Newbie Joined: May 09, 2016 08:20 Messages: 5 Offline
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PJay
Try to add DWORD "UIUseHVA_MAIN10" 0x00000001 in registry HKEY_LOCAL_MACHINE\SOFTWARE\CyberLink\Common\clcvd
DWORD "UIUseHVA" 0x00000001 already there is I suppose.
If not add it too.
Try to get subj in both PowerDVD 16 and MPC-HC.
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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It didn't work.
UIUseHVA is 2 for me.
It's in HKEY_CURRENT_USER under mpc-hc key:

http://i.imgur.com/5JyjafW.png
VictorLS [Avatar]
Newbie Joined: May 09, 2016 08:20 Messages: 5 Offline
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Why UIUseHVA is 2? That is HAM (is it better than DXVA?). UIUseHVA=1 is DXVA. Try so.
I prefer HKEY_LOCAL_MACHINE for all users and all software on my computer )

This message was edited 1 time. Last update was at May 17. 2016 16:00

PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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Still waiting for 10-bit support...
VictorLS [Avatar]
Newbie Joined: May 09, 2016 08:20 Messages: 5 Offline
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Quote Still waiting for 10-bit support...


With lastest Cyberlink's Video Decoders most of 10-bit h265 4K files are being decoded with hardware acceleration via DXVA2 but free LAV Video Decoder seems to decode almost all available 10-bit h265 4K files.
PJay [Avatar]
Member Joined: Jun 09, 2009 13:53 Messages: 109 Offline
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Quote
Quote Still waiting for 10-bit support...


With lastest Cyberlink's Video Decoders most of 10-bit h265 4K files are being decoded with hardware acceleration via DXVA2 but free LAV Video Decoder seems to decode almost all available 10-bit h265 4K files.




Too late but good.
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