Evaluation of HEVC decoders (SW, Hybrid and HW)

[huhn]

never heard of an directcompute decoder/hybrid decoder and ASIC decoders doesn't care anyway. the API is still DXVA 2/DXVA

and i don't know if directcompute benefits from dx12 at all.

could be very useful for rendering and presentation.

[NikosD]

Originally Posted by huhn

looks like MS MF HEVC decoding with windows 10240 is broken. did someone have the same problem?

Originally Posted by NikosD

Anyway, regarding MS MFT HEVC decoder, it didn't work.

I decided to put Win 10 to my main system (signature) and MS MFT HEVC decoder works just fine.

I don't know why MS MFT HEVC using the same OS version doesn't work with my backup system.

[huhn]

works fine on my nvidia system too.

there where some widows updates have to check my AMD system again.

[huhn]

i haven't installed the updates yet but it is now working. what ever it was it's gone.

MS MF HEVC is still at 59 FPS for my i3 4120. so microsoft hasn't touch this decoder. it is still way faster than lavfilter x64 so well done MS.

[NikosD]

Originally Posted by huhn

i haven't installed the updates yet but it is now working. what ever it was it's gone.

I finished my upgrades of 4 systems (1 laptop and 3 desktops) and only one - my primary signature system - has a working MS MFT HEVC decoder!

For all the other 3 is not working, at least using DXVA Checker.

But even in the signature working system, one very weird thing happened.

When I try an .mp4 HEVC file, the MS decoder doesn't appear.

Then I try a different .mkv HEVC file and it appears.
And then, when I go back to the first not working .mp4 file, HEVC decoder suddenly works for that too!

It's a bug/ conflict of DXVA Checker or OS.

@huhn

Do you have a yellow question mark in device manager for the Intel HDMI audio driver with a Code 10 error ?

I think that Intel driver didn't install correctly the audio driver or I urged a restart while it was installing (I don't remember exactly)

My last weird thing regarding Win 10 installation, is that the new tab functionality while using a Web browser by pressing the mouse wheel, doesn't work with my wireless RF mouse, but it works with my wired USB mouse on the same laptop!

Oh God of Microsoft!

What's going on ?

[huhn]

i have no yellow question marks in my device manager but i'm not actively using an intel GPU they are just installed.

i tried an mp4 HEVC file and it worked frist try. of cause i didn't loaded any other videos in DXVA checker first.

[NikosD]

Originally Posted by huhn

if windows 10 gets window mode with 10 bit i wouldn't be shocked a direct x 12.1 card is needed.

After the installation of the new Intel drivers for Win 10 v4256, the HDMI device disappeared completely, so now I have no yellow marks

The most important thing though, is that DXVA Checker reports P010 output for 10bit H.265 files during playback with MS MFT HEVC decoder...in window mode !!

[huhn]

Originally Posted by NikosD

After the installation of the new Intel drivers for Win 10 v4256, the HDMI device disappeared completely, so now I have no yellow marks

The most important thing though, is that DXVA Checker reports P010 output for 10bit H.265 files during playback with MS MFT HEVC decoder...in window mode !!

that doesn't mean a renderer has outputted 10 bit at all.

[NikosD]

Originally Posted by huhn

so my system isn't broken good to know.

Originally Posted by NikosD

I finished my upgrades of 4 systems (1 laptop and 3 desktops) and only one - my primary signature system - has a working MS MFT HEVC decoder!

For all the other 3 is not working, at least using DXVA Checker.

I finished installing Win 10 to all my 5 systems (4 desktops 1 laptop) and I found out a pattern, that seems a little strange about when MS MFT HEVC decoder works and when it doesn't.

Well, only one system enables MS MFT HEVC decoder and that is the system with a WDDM 2.0 driver (Haswell) system.

On all my other systems with a WDDM 1.3 driver, there is no MS MFT HEVC decoder enumerating in DXVA Checker or used in WMP12 (MFT player), although it is definitely installed in the system - I can see it in MFT Viewer.

Is this really true ?

Does Microsoft enable its MS MFT HEVC decoder only on systems with WDDM v2.0 GPU drivers ?

More feedback is needed by any of you who have installed Win 10 Build 10240.

[06_taro]

On one of my old laptop with only WDDM 1.1 support, MS MFC HEVC decoder is installed but not usable. Haven't try on other PCs as I'd like to receive official upgrade for them.

[NikosD]

So you' ve just confirmed me.
Thanks.

[sneaker_ger]

Have you tried just playing in Windows Media Player? Maybe it's only a quirk of DXVA checker.

[NikosD]

Originally Posted by sneaker_ger

Have you tried just playing in Windows Media Player? Maybe it's only a quirk of DXVA checker.

From the post above:

"On all my other systems with a WDDM 1.3 driver, there is no MS MFT HEVC decoder enumerating in DXVA Checker or used in WMP12 (MFT player), although it is definitely installed in the system - I can see it in MFT Viewer."

[nussman]

So no HEVC playback in WMP?

[NikosD]

No MS MF HEVC decoder in WMP with non WDDM 2.0 GPU drivers.

But WMP can use Lentoid or LAV HEVC decoders for systems with older than WDDM 2.0 GPU drivers.

[NikosD]

DX12 for Fermi will come later

http://nvidia.custhelp.com/app/answe...ail/a_id/3707/

[P.J]

Yea, WMP couldn't play HEVC without breaking the CPU, much worse than LAV CPU
DXVAChecker can decode with DXVA but horrible playback and breaks the CPU

[clsid]

It is strange that software decoding also doesn't work. That shouldn't depend on the driver. Oh well, I prefer LAV anyway. At least it properly falls back to using DirectShow without needing tweaks.

[NikosD]

I don't think that MS MFT HEVC decoder has GPU accelerated capabilities yet.

I don't know if it works with DXVA Nvidia pure HW HEVC decoder, but last time I tested that with Intel Hybrid decoder it didn't work.

So, I was referring to SW MS HEVC decoder not working with older than WDDM 2.0 GPU drivers.
It sounds weird, but probably MS wants to be sure that the GPU driver can output 10bit format properly regardless of the type of decoding (SW/HW).

[huhn]

but you don't need WDDM 2.0 to output 10 bit even windows 7 can do 10 bit output