Media Player Classic Home Cinema (MPC-HC) - DXVA!

[SamuriHL]

Thank you!

Sent from my Xoom using Tapatalk 2

[pulbitz]

Originally Posted by pulbitz

Does MPC-HC H.264 DXVA decoder on Intel HD 2000 process deblocking?
I'm seeing artifacts when using it.
Other DXVA decoders is OK. (MS DTV-DVD, LAV, PotPlayer)

Question: Does MPC-HC H.264 DXVA decoder support deblocking?

[Underground78]

Why do you mean by "support deblocking"? If you are refering to the H264 deblocking filter it's part of the norm and must be present in all decoders.

[pulbitz]

Originally Posted by Underground78

Why do you mean by "support deblocking"? If you are refering to the H264 deblocking filter it's part of the norm and must be present in all decoders.

I'm seeing artifacts when using MPC-HC H.264 DXVA decoder on Sandybrige HD 2000 Graphics and Arrandale HD Graphics.
It seems to be no deblocking.

All my H.264 files, I get the same result with MPC-HC built-in and MPCVideoDec.ax

Other decoders(MS DTV-DVD, MPC-HC libav, LAV DXVA/QuickSync/libav, ffdshow QuickSync/libav, PotPlayer DXVA/QuickSync/libav) are OK.

[daWsOn_s]

is reclock still the only way to slowdown PAL content to 24p in mpc hc? It crashes on me even before loading. IS there any other way ?

[Snowknight26]

All 3 EVRs don't respect the full range bitstream flag. Example video. Switch between any of the EVRs and madVR to see the difference.

[namaiki]

Originally Posted by pulbitz

I'm seeing artifacts when using MPC-HC H.264 DXVA decoder on Sandybrige HD 2000 Graphics and Arrandale HD Graphics.
It seems to be no deblocking.

All my H.264 files, I get the same result with MPC-HC built-in and MPCVideoDec.ax

Other decoders(MS DTV-DVD, MPC-HC libav, LAV DXVA/QuickSync/libav, ffdshow QuickSync/libav, PotPlayer DXVA/QuickSync/libav) are OK.

Could you please open that video in MPC-HC using the EVR Custom video renderer.

Please take three screenshots of the Ctrl+J statistics/info:

One for MPC-HC's internal H.264 DXVA filter and one for MS DTV-DVD Video decoder and one for other working DXVA filter.

[pulbitz]

Originally Posted by namaiki

Could you please open that video in MPC-HC using the EVR Custom video renderer.

Please take three screenshots of the Ctrl+J statistics/info:

One for MPC-HC's internal H.264 DXVA filter and one for MS DTV-DVD Video decoder and one for other working DXVA filter.

Please see capture files.

mpc-hc_dxva.jpg:
ms_dvt-dvd_dxva.jpg:
lav_dxva.jpg:

mpc-hc_dxva_stats.jpg:
ms_dtv-dvd_dxva_stats.jpg:
lav_dxva_stats.jpg:

Edit:
Sample file http://www.sendspace.com/file/7sf0p2

[namaiki]

Please, one more for another working DXVA filter.

Hmm, does anyone recall if the Intel HD 2000 graphics supports a regular H.264 DXVA mode, or only Intel ClearVideo mode? I recall that the HD3000 does, but not sure about the HD2000...

[Aleksoid1978]

pulbitz Upload a sample of this video.

[nevcairiel]

Originally Posted by namaiki

Hmm, does anyone recall if the Intel HD 2000 graphics supports a regular H.264 DXVA mode, or only Intel ClearVideo mode? I recall that the HD3000 does, but not sure about the HD2000...

2000 and 3000 are the same chips, just different performance.

[vivan]

Originally Posted by pulbitz

Please see capture files.

It's not deblocking problem.
It's awful postprocessing (sharpness). Turn it off in Intel media control panel...

[pulbitz]

Originally Posted by vivan

It's not deblocking problem.
It's awful postprocessing (sharpness). Turn it off in Intel media control panel...

It is deblocking problem.
Other decoders are the same condition.
Anyway I turn it off and caputre.

mpc-hc_dxva_decoder_does_not_deblocking.jpg:
other_decders_are_OK.jpg:


Edit:
ffdshow_libav_skip_deblocking_always.jpg:
I have compared between MPC-HC H.264 DXVA decoder and 'skip deblocking always' in ffdshow libavcodec.
They are same quality.

[namaiki]

I was thinking it could be related to this: http://sourceforge.net/apps/trac/mpc-hc/ticket/168

I don't know if devs can fix the ClearVideo mode but I think it might be able to work if it's going through the standard DXVA thing "ModeH264_VLD_NoFGT" (first present on Intel HD3000/2000) instead of "ModeH264_VLD_NoFGT_ClearVideo" (only mode available on previous generation Intel HD Graphics and Intel X4500). Assuming it doesn't already do that...

[nevcairiel]

LAV uses the ClearVideo mode, and it works just fine
In fact, it usually works better then the "normal" mode.

[wanezhiling]

What's the difference between ClearVideo mode and "normal" mode?

Higher quality? More stable?

[Scoty]

Where can i set ClearVideo mode?

[Amour]

Originally Posted by Scoty

Where can i set ClearVideo mode?

My poor understanding is:

You just set a DXVA filter. Depending on your brand, it will use:
* ClearVideo = with Intel.
* PureVideo = with NVidia.
* Avivo = with AMD.

Using DXVA means you make use of your GPU instead of just your CPU alone.

[s4e]

r4683 display incorrect DVBSubtitle colors. Because:
1. entry_id +1 cause incorrect color index
2. Y=0 didn't clear transparency cause pink edge
Follow patch fix my problem:

--- .svn\text-base\DVBSub.cpp.svn-base  Fri May 11 11:31:09 2012
+++ DVBSub.cpp  Fri May 11 13:28:34 2012
@@ -512,7 +512,7 @@

                pClut->Size = 0;
                while (gb.GetPos() < wEnd) {
-                       BYTE entry_id   = gb.ReadByte()+1;
+                       BYTE entry_id   = gb.ReadByte();
                        BYTE _2_bit             = (BYTE)gb.BitRead(1);
                        BYTE _4_bit             = (BYTE)gb.BitRead(1);
                        BYTE _8_bit             = (BYTE)gb.BitRead(1);
@@ -534,10 +534,12 @@
                                pClut->Palette[entry_id].T      = 0xff-((BYTE)gb.BitRead(2)<<6);
                        }
                        if (!pClut->Palette[entry_id].Y) {
-                               pClut->Palette[entry_id].Cr = pClut->Palette[entry_id].Cb = 0;
+                               pClut->Palette[entry_id].Cr = 0;
+                               pClut->Palette[entry_id].Cb = 0;
+                               pClut->Palette[entry_id].T = 0;
                        }

-                       pClut->Size = max (pClut->Size, entry_id);
+                       pClut->Size = max (pClut->Size, entry_id+1);
                }
        }

[Scoty]

Originally Posted by Amour

My poor understanding is:

You just set a DXVA filter. Depending on your brand, it will use:
* ClearVideo = with Intel.
* PureVideo = with NVidia.
* Avivo = with AMD.

Using DXVA means you make use of your GPU instead of just your CPU alone.

Thank you.