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Old 4th June 2014, 14:53   #241  |  Link
NikosD
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Thanks!

The driver is latest official and not beta.

Supports Intel® Iris™ graphics, Intel® Iris™ Pro graphics, and Intel® HD graphics on:

4th Generation Intel® Core™ Processor Platform
4th Generation Intel® Core™ Processor U Series-based Platform
4th Generation Intel® Core™ Processor Y Series-based Platform
3rd Generation Intel® Core™ Processor Platform
3rd Generation Intel® Core™ Processor U Series-based Platform
3rd Generation Intel® Core™ Processor Y Series-based Platform

Supports Intel® HD graphics on:

Intel® Pentium® Processor 1403 v2/1405 v2/2020M/2030M/2117U/
2129Y/2127U/A1018/G2010/G2020/G2020T/G2030/G2030T/G2100T/
G2120/G2120T/G2130/G2140
Intel® Celeron® Processor 927UE/1000M/1005M/1007U/1017U/1019Y/
1020E/1020M/1037U/1047UE/G1610/G1610T/G1620/G1620T/G1630
Intel® Pentium® Processor 3550M/3556U/3558U/3560Y/3561Y/G3220/
G3220T/G3320TE/G3420/G3420T/G3430/3560M/G3240/G3420T/
G3440/3440T/G3450/G3258
Intel® Celeron® Processor 2000E/2002E/2950M/2955U/2957U/2961Y/
2980U/2981U/G1820/G1820T/G1820TE/G1830/2970M/G1840/G1840T/G1850

Unfortunately I didn't find a HEVC device decoder using DXVA Checker, but it's the first official driver that supports HEVC decoding (but not transcoding)

Quote:
HEVC decode now supported by the driver and video players can now take advantage of the GPU accelerated decode support offered by Intel
Quote:
Transcoding to HEVC is currently not supported.
I have some HEVC files to check, but first developers like Nevcairiel or video players like PotPlayer should build the HEVC decoder utilizing GPU support.
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Old 4th June 2014, 16:16   #242  |  Link
Yups
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I have this in DXVAChecker:

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Old 4th June 2014, 17:03   #243  |  Link
NikosD
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Unfortunately I have this:
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Old 4th June 2014, 17:46   #244  |  Link
Yups
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Win 8 I assume. My test is from Win 7 on a HD4600. Shouldn't make a difference though. Maybe Pentium or GT1 in general isn't supported because not enough EU power? Or a bug?

How can I check on a HEVC video if it's working?
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Old 4th June 2014, 17:51   #245  |  Link
NikosD
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It seems that the HW decoder uses EUs and that could be a reason of not supporting it on my Intel HD graphics (only 10 EUs)

I don't think it's my Win 8.1 OS.

About HEVC video, you can't test it because as I wrote you before I don't know any video player/ decoder utilizing the new Intel's HW decoder.

Check LAV Video decoder and PotPlayer for updates.
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Old 4th June 2014, 17:52   #246  |  Link
wanezhiling
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Yups, You can't check now because currently there is no available hevc dxva decoders.
btw I've reported to PotPlayer devs.
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Old 4th June 2014, 17:56   #247  |  Link
clsid
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Current hardware does not support HEVC, so keep on dreaming. It will simply do software decoding.
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Old 4th June 2014, 19:06   #248  |  Link
NikosD
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Is there something not clear in the release notes of Intel's driver ?

It clearly says GPU accelerated support.

Obviously partial acceleration using mainly EUs and CPU and probably not QuickSync.
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Old 4th June 2014, 19:08   #249  |  Link
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Or OpenCL/CUDA.
pretty much sure we will get this feature for free.
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Old 4th June 2014, 19:25   #250  |  Link
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CUDA is Nvidia only and for HEVC decoding Intel surely won't use OpenCL. They made it clear in the past that execution units are used for this as Quicksync doesn't support it in the current hardware. EUs are part of the (GPU) hardware so the comment from clsid is clearly nonsense.
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Old 4th June 2014, 19:57   #251  |  Link
NikosD
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Exactly (I would give a point to OpenCL, although only AMD has clearly said that will follow this path)
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Old 4th June 2014, 23:47   #252  |  Link
nevcairiel
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Intels hardware decoder is quite flexible, I bet they can at least do parts of the decoding process in hardware, and the remaining parts in the EUs or on the CPU. We'll see how it performs once someone implements it, but for me it'll be a while since I'll be out of the country for a couple weeks soon, and somehow I doubt someone else will beat me to it, its quite a complex endavour and entirely new code, can't steal it from some place.
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Old 5th June 2014, 14:51   #253  |  Link
GTPVHD
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https://software.intel.com/en-us/forums/topic/499189

Quote:
Intel Core Processor platforms currently do not have fixed function HW HEVC codec capability. This is a feature that may be supported in future Intel Processors. On that note, there are plans to release a "hybrid" (utilizing EUs of the Core Processor graphics unit) HEVC decoder later this year.
You won't see power efficient full HEVC hardware decoding until Skylake, even Broadwell does not support full HEVC hardware decoding.

Last edited by GTPVHD; 5th June 2014 at 14:53.
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Old 5th June 2014, 14:57   #254  |  Link
nevcairiel
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We're all well aware that there is no full fixed function decoding of HEVC, as discussed just a couple posts above.
This is the hybrid variant, which off-loads certain tasks to the hardware.
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Old 5th June 2014, 16:56   #255  |  Link
Yups
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Quote:
Originally Posted by nevcairiel View Post
We're all well aware that there is no full fixed function decoding of HEVC, as discussed just a couple posts above.
This is the hybrid variant, which off-loads certain tasks to the hardware.

Exactly this. We knew since months that QS of Haswell doesn't support it. The Intel answer is old, already linked here and known. We are happy enough that it works via the shader somehow. Not as power efficient and fast as a pure fixed function solution but it should help to lower the CPU dependence, especially for slower mobile Dualcore systems this is important.
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Old 5th June 2014, 21:41   #256  |  Link
NikosD
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Quote:
Originally Posted by nevcairiel View Post
Intels hardware decoder is quite flexible, I bet they can at least do parts of the decoding process in hardware, and the remaining parts in the EUs or on the CPU.
It seems that no part of the decoding process is going to be executed in fixed-function HW decoder (QuickSync), although as nevcairiel has said, it is quite flexible (but probably not enough for HEVC decoding).

VLD will be done by CPU and the other parts by EUs.

I think that is what GTPVHD wanted to say.

Quote:
Originally Posted by Yups View Post
Not as power efficient and fast as a pure fixed function solution but it should help to lower the CPU dependence, especially for slower mobile Dualcore systems this is important.
Unfortunately, my dual core Pentium processor doesn't have HEVC DXVA enabled.
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Old 6th June 2014, 01:46   #257  |  Link
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There are lots of mobile Core i3, i5, i7 2/4 low TDP/clocked models in the market. Not sure if it's intended that Pentium models don't have HEVC enabled, if this is the case Intel should make it clear in their changelog. You could try to ask them in the Media SDK forum. In their graphics section I doubt you will get a useful answer.
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Old 6th June 2014, 10:22   #258  |  Link
NikosD
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Their excuse could be "Intel HD Graphics" with only 10 EUs, that all Pentium iGPUs have.

On the contrary, most - if not all - Core iX processors have 20 EUs, like the ones you mentioned above.

But for Pentiums, is more useful and necessary to have GPU support for HEVC decoding, due to slower CPU performance compared to other Core iX dual cores.
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Old 17th June 2014, 19:16   #259  |  Link
vortex_hl
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fyi geforce 340.43 drivers support HEVC_VLC_Main profile on GTX 750 Ti

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Old 18th June 2014, 06:46   #260  |  Link
NikosD
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Very interesting.

It seems that Nvidia with VP6 is closer to Intel than ever.
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