Sandybridge H264 dxva

People with Intel Sandybridge, can you try if these dll's solve your H264 dxva2 problem:
http://www.speedyshare.com/files/29293622/.libs.rar
(edited with new link, I spotted a small error I made).
Use with official Dharma 10.1 (not nightly builds).

I'll give it a try today after work on my i7-2600k sandybridge setup and write the results here.

Still hoping for someone to test it in the next couple of hours, that would be just in time for me to cancel my i3 order...

Tested your dll today, still the same issue.
Did the testing on my i7-2600k running Windows 7 64bit.

Placed the avcodec-52.dll file in C:\Program Files (x86)\XBMC\system\players\dvdplayer\ where it seems to be the only file with avcodec-52.dll as filename.
Is the avcodec.dll to be used anywhere?

Yeah, I heard from others the same thing. It was the most obvious thing that could have caused the problem, too bad it's not that. I'll try to fix up a new dll, today or tomorrow, with another idea. If that doesn't work either, I'm going to give up, since it's too inconvenient to fix it without having an Intel chipset myself.

Ok, please see if this solves it: http://www.speedyshare.com/files/2930759...dec-52.rar

It might be possible that when you skip in the video, you'll see the issue for a few seconds and then it (hopefully) disappears. Or is that also the case anyway with the original version ?

just tried your new modified files - still the same issue im afraid.

Did some testing with the same movie and original vs your modified avcodec-52.dll and it seems to be precise same issues.

macroblocking all over, and if the camera clips to a completely new area the picture will be okay for 1 sec, and then start with all the macroblocking again.

When trying to skip in the video it gives me same issue as when a new scene/clip starts.

and this was same issue for both original + your dll.

NicoP Wrote:just tried your new modified files - still the same issue im afraid.

Did some testing with the same movie and original vs your modified avcodec-52.dll and it seems to be precise same issues.

macroblocking all over, and if the camera clips to a completely new area the picture will be okay for 1 sec, and then start with all the macroblocking again.

When trying to skip in the video it gives me same issue as when a new scene/clip starts.

and this was same issue for both original + your dll.

Ok, thanks for testing. Somebody told me that MPC-HC/FFMPEG worked ok for H264 on Sandybridge. So, then I checked the MPC-HC/FFMPEG code out and saw that they patched their FFMPEG H264 implementation a bit. So my last 2 dll's were based on that, but I just heard today from that guy that he had it wrong and that MPC-HC/FFMPEG didn't work either (which I had expected in the first place).

So in short, it seems there's no easy solution here and it's going to be hardcore debugging again. Since I have no Sandybridge myself, I'll leave it this time up to somebody else

@theSpecialist

MPC-HC does work, if you try the nightly builds. I've tried it myself.

XBMCRocksMyBoat Wrote:@theSpecialist

MPC-HC does work, if you try the nightly builds. I've tried it myself.

I heard so, but then the guy said that it just shut downs DXVA.

You could verify with dxvachecker, with the 'trace' option, it logs DXVA calls.

Or, there's probably an option in MPC-HC to show all info on screen (like the O-key in xbmc).

And remember, we're talking about the FFMPEG (dxva) filter in MPC-HC (in MPC-HC you can also select another filter, which DOES work with dxva2 H264).