Read this if you have DXVA related problems

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Read this if you have DXVA related problems

Postby clsid on Sat Oct 31, 2009 11:09 pm

If you have problems with DXVA, then please reply in this topic with the following information:
  • A short description of the problem your have.
  • Which version of Windows you use.
  • Which graphics card you have.
  • Which version graphics driver you have installed.

An example:
* Problem: Green video
* Windows Vista x64 SP2
* ATI RADEON HD 3470
* Catalyst 9.9 driver


This information might be helpful for the developers of Media Player Classic Home Cinema to improve the internal DXVA decoders. If enough people reply here then we might also be able to see a pattern of specific cards or driver versions that give problems.


Disabling the internal DXVA decoders can be done through:
MPC Options -> Internal Filters
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Re: Read this if you have DXVA related problems

Postby Karlson2k on Mon Nov 02, 2009 9:44 pm

Problem: green/black/pink blocks in video, video distortion
Windows 7 (x64)
ATI Radeon 4770
Catalyst 9.10
MPC-HC from k_Lite 5.3.4b (32bit)

Small sample: http://www.filefactory.com/file/a083a17 ... ed-001_mkv
http://depositfiles.com/files/7elpak9si
This is the only one file in my big collection that played with problems.

Tried to play 2 minutes of movie - got video driver hung and restart.
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Re: Read this if you have DXVA related problems

Postby clsid on Wed Nov 04, 2009 9:44 pm

@Karlson2k

Good news. That problem has been fixed in MPC-HC 1.3.1330. The file will in that version no longer play using DXVA because it has too many reference frames. Using pure software decoder it will play correctly.
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Re: Read this if you have DXVA related problems

Postby Karlson2k on Thu Nov 05, 2009 7:44 am

clsid, Got 5.4.0. Nothing was changed.
Sample posted above still played with DXVA. Same problems.
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Re: Read this if you have DXVA related problems

Postby clsid on Thu Nov 05, 2009 1:00 pm

Weird. 1330 fixed the problem for me with your sample file. As you also have an ATI card, it should have worked. I have no explanation for it at this moment.
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Re: Read this if you have DXVA related problems

Postby Karlson2k on Thu Nov 05, 2009 10:00 pm

Double checked.
Version 1.3.1330.0. Status bar: "Playing (DXVA)".
Same problems.
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Re: Read this if you have DXVA related problems

Postby twipley on Tue Nov 10, 2009 5:06 pm

Sorry to interrupt this discussion, but reading this brings me to the point: "should I prefer putting the strain on the GPU or on the CPU?"
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Re: Read this if you have DXVA related problems

Postby clsid on Tue Nov 10, 2009 8:30 pm

It all depends on what you find more important.
If you don't like the restrictions of DXVA and want complete freedom, then using the CPU would be the best choice. Provided that your CPU is powerful enough of course.
If power consumption is important to you, then using DXVA might possibly be the best choice according to some people, because CPUs have better power saving modes on low loads.
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Re: Read this if you have DXVA related problems

Postby ale5000 on Tue Nov 10, 2009 10:36 pm

GPU are usually more powerfull, but make DXVA working is a pain :D
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Re: Read this if you have DXVA related problems

Postby Rocket Slug on Wed Nov 11, 2009 2:38 pm

After getting DXVA to work, I found the reduced CPU load to be fairly negligible, but then again I'm running it on an nVidia mobile laptop GPU. If you're running a desktop with a medium to high-end graphics card, then the gains might be more noticeable. So far, I haven't come across video that FFdshow can't play smoothly, so I'm sticking to it for thumbnail generation.
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Re: Read this if you have DXVA related problems

Postby clsid on Wed Nov 11, 2009 5:35 pm

The internal DXVA decoder of MPC only gets used by MPC. It does not get used for thumbnail generation. Whatever software decoder you have installed will be used for that.
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Re: Read this if you have DXVA related problems

Postby tch654 on Sun Nov 15, 2009 4:25 pm

I have the same problem. Just upgraded from v4.8 to v5.4 tonight.

I had to disable the DXVA in order to watch the video again (ts, h264). My card:
ATI Radeon HD 2600 PRO (4098). It works well under HDTV.
CPU: Pentium(R) 4 3.20GHz
OS: WinXP (SP3)

Had tried the suggestion on: http://www.codecguide.com/faq_dxva.htm#item1 without success.

So the problem is not fixed from 5.3 to 5.4.

Footnote: the video plays ok if I do not ff or skip the commercials. But once I did, the red/blue/green blocks obscured the images; the audio was ok though. So if clsid did not strain the video with ff and reversing, the problem may not emerge at all.

Footnote 2: for old systems like mine, the CPU usage is 70-80% without hardware acceleration, with the DXVA on the figure is just 7%. When my system gets hot, it becomes noisy because of the fan. So I would be most grateful if the problem could be solved.
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Re: Read this if you have DXVA related problems

Postby clsid on Sun Nov 15, 2009 9:07 pm

Perhaps MPC-HC version 1.2.1008 works better? That version is also included in the pack, and it is the same version as used in the older versions of the pack.
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Re: Read this if you have DXVA related problems

Postby tch654 on Tue Nov 17, 2009 5:10 am

clsid,

Just re-installed the k-lite codec package (std) with MPC-HC version 1.2.1008.0. The same problem: no problem in viewing as long as I don't fast-forward or skip (perfectly ok if I chose to use "Direct3D Fullscreen (remove tearing)" . Otherwise, the video just freezes with rgb squares with smudges of new images beneath the frozen frame together with flashes every other second.
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