ffdshow tryouts project: Discussion & Development

[Carpo]

Update your graphics driver.

it is the latest 181.22

[Mercury_22]

I have very bad (choppy ?!) video with some AVC files
Can anyone tell me what I'm doing wrong ? (default settings in FFD)
I've tested the same files (same MPC-HC settings too) with other avc filters and even MPC-HC's internal filter (DXVA only) it's better ! :confused: So it's definitely something wrong with FFD or my settings :confused:
:helpful:


Sample (http://rapidshare.com/files/197184924/TestAVC.m2ts.html)

[clsid]

it is the latest 181.22
I am pretty sure there are newer drivers than that.
A workaround that you could try is this:
Set Edge enhancements and Noise reduction to 20% in the NVIDIA control panel.

This problem is not caused by ffdshow.

[Carpo]

if you mean beta drivers i guess there is, but im usin latest whql ones, i have seen that fix advised before, i'll give it a try

[mark0077]

... or keep colors in nv12 all the way up to renderer which will do conversion to rgb in graphic card.

Actually no, on both of my nvidia cards, 7600GT and GTX295, nvidias nv12 to rgb32 conversion is HORRIBLE. yv12 to rgb32 conversion is perfect. I am updating my dvd quality thread at the moment and my findings on nv12 stand, it doesn't always provide the best quality colors, need more nvidia users to confirm this as an nvidia issue.

[rt87]

just found that when using ffdshow to decode sowt audio, it reduces playback speed alot.

[Snowknight26]

With r2671, when I have a 24-bit FLAC source connected to ffdshow via madFLAC, ffdshow seems to output '32-bit integer.' Is it upsampling the audio, zeroing the extra 8 bits, or what? Shouldn't it only output '24-bit integer,' assuming I have 16, 24, 32-bit and 32-bit floating point all checked in the Output?

Also, for consistency's sake, shouldn't there be a '-' between ## and bit under Output considering there is one on the tool tip when Extended info is checked?

[haruhiko_yamagata]

I have very bad (choppy ?!) video with some AVC files
Can anyone tell me what I'm doing wrong ? (default settings in FFD)
I've tested the same files (same MPC-HC settings too) with other avc filters and even MPC-HC's internal filter (DXVA only) it's better ! :confused: So it's definitely something wrong with FFD or my settings :confused:
:helpful:


Sample (http://rapidshare.com/files/197184924/TestAVC.m2ts.html)
It's just performance problem.
ffmpeg-mt + yadif(single) + RGBhq is OK on my Core2 Quad 6600.
libavcodec (normal) + YV12 is not OK.
To enjoy yadif in double frame rate, we need better CPU.

[albain]

This patch will allow the audio decoder to connect to the ArcSoft Demux and decode EAC3 audio tracks. It also defines the wFormatTag as WAVE_FORMAT_DTS_HD instead of WAVE_FORMAT_DTS_W when the media subtype is MEDIASUBTYPE_ARCSOFT_DTSHD.

Index: src/ffdshow_mediaguids.h
===================================================================
--- src/ffdshow_mediaguids.h (revision 2672)
+++ src/ffdshow_mediaguids.h (working copy)
@@ -394,6 +394,7 @@

DEFINE_GUID(MEDIASUBTYPE_NERO_MLP ,0x1e889be7, 0xb276, 0x4064, 0x9a, 0x39, 0x16, 0x0a, 0x06, 0x89, 0x5b, 0x52);
DEFINE_GUID(MEDIASUBTYPE_ARCSOFT_MLP ,0x4288b843, 0x610b, 0x4e15, 0xa5, 0x3b, 0x43, 0x00, 0x7f, 0xcf, 0xf6, 0x14);
+DEFINE_GUID(MEDIASUBTYPE_ARCSOFT_DDPLUS ,0x71cfa727, 0x37e4, 0x404a, 0xae, 0xc0, 0x34, 0x84, 0x25, 0x32, 0xef, 0xf7);
DEFINE_GUID(MEDIASUBTYPE_SONIC_MLP ,0x4094a857, 0x7891, 0x44ac, 0x92, 0xb5, 0xc1, 0xcf, 0xf3, 0x7a, 0xf2, 0xe7);
DEFINE_GUID(MEDIASUBTYPE_ARCSOFT_DTSHD ,0xf6498f57, 0xb399, 0x4a43, 0xa6, 0xfa, 0xf6, 0x94, 0xad, 0x42, 0xb9, 0xbe);
DEFINE_GUID(MEDIASUBTYPE_DOLBY_DDPLUS ,0xa7fb87af, 0x2d02, 0x42fb, 0xa4, 0xd4, 0x5, 0xcd, 0x93, 0x84, 0x3b, 0xdd);
Index: src/TffDecoder_reg.cpp
===================================================================
--- src/TffDecoder_reg.cpp (revision 2672)
+++ src/TffDecoder_reg.cpp (working copy)
@@ -435,6 +435,7 @@
{ &MEDIATYPE_Audio , &MEDIASUBTYPE_Vorbis2 },
{ &MEDIATYPE_Audio , &MEDIASUBTYPE_VorbisIll },
{ &MEDIATYPE_Audio , &MEDIASUBTYPE_ARCSOFT_MLP },
+ { &MEDIATYPE_Audio , &MEDIASUBTYPE_ARCSOFT_DDPLUS },
{ &MEDIATYPE_Audio , &MEDIASUBTYPE_ARCSOFT_DTSHD },
//{ &MEDIATYPE_Audio , &MEDIASUBTYPE_EAC3 },
{ &MEDIATYPE_Audio , &MEDIASUBTYPE_PCM },
Index: src/TffdshowDecAudio.cpp
===================================================================
--- src/TffdshowDecAudio.cpp (revision 2672)
+++ src/TffdshowDecAudio.cpp (working copy)
@@ -212,7 +212,7 @@
wFormatTag=WAVE_FORMAT_VORBIS;
else if (mt.subtype==MEDIASUBTYPE_DOLBY_AC3)
wFormatTag=WAVE_FORMAT_AC3_W;
- else if (mt.subtype==MEDIASUBTYPE_DTS || mt.subtype==MEDIASUBTYPE_ARCSOFT_DTSHD)
+ else if (mt.subtype==MEDIASUBTYPE_DTS)
wFormatTag=WAVE_FORMAT_DTS_W;
else if (mt.subtype==MEDIASUBTYPE_DVD_LPCM_AUDIO)
wFormatTag=WAVE_FORMAT_LPCM;
@@ -233,9 +233,9 @@
else if (mt.subtype==MEDIASUBTYPE_DOLBY_TRUEHD || mt.subtype==MEDIASUBTYPE_NERO_MLP
|| mt.subtype==MEDIASUBTYPE_ARCSOFT_MLP || mt.subtype==MEDIASUBTYPE_SONIC_MLP)
wFormatTag=WAVE_FORMAT_MLP;
- else if (mt.subtype==MEDIASUBTYPE_DOLBY_DDPLUS)
+ else if (mt.subtype==MEDIASUBTYPE_DOLBY_DDPLUS || mt.subtype==MEDIASUBTYPE_ARCSOFT_DDPLUS)
wFormatTag=WAVE_FORMAT_EAC3;
- else if (mt.subtype==MEDIASUBTYPE_DTS_HD)
+ else if (mt.subtype==MEDIASUBTYPE_DTS_HD || mt.subtype==MEDIASUBTYPE_ARCSOFT_DTSHD)
wFormatTag=WAVE_FORMAT_DTS_HD; // TODO : define a separate codecId for DTSHD when available
else
{


Thank you for your patch. I am testing it and working on bugfixes on this part.

[Mercury_22]

It's just performance problem.
ffmpeg-mt + yadif(single) + RGBhq is OK on my Core2 Quad 6600.
libavcodec (normal) + YV12 is not OK.
To enjoy yadif in double frame rate, we need better CPU.

So MPC-HD's internal DXVA AVC it's more performant (with my 4670) than FFD's AVC (+ my E8400 )?! :confused: That's strange I've alway thought that MPC's AVC it's slower than FFD !
Anyway :thanks:

P.S. any news about ffmpeg-mt 64-bit ?

[mark0077]

Now that I see colorspace conversion is looking excellent... I would love to build up a list of benchmarks for improving interlaced vs progressive frames... which has been a plague to dvd quality playback for im sure all of us, certainly me and my friends. Before I go about trying to come up with a list of tests.... I am just wondering does anyone know if I can use hardware deinterlacing as a step before ffdshow... like the following

ffdshow libavcodec mpeg2 decoder -> output in original colorspace with interlace flag -> deinterlaced by hardware -> back to ffdshow for colorspace conversion and other stuff -> output to renderer

Is this possible? I am watching alot of material the last few days and I can say there is that little improvement in deinterlacing when using hardware over yadif... I am just greedy and want the best of both worlds ;) Do you think this could be possible?

[Leak]

Do you think this could be possible?
Sorry, but I don't think so.

Hardware deinterlacing happens in the video renderer when the image is on the graphics card already; but there's no way to read it back in a graph, filter it then send it to the renderer again - same problem as with DXVA decoded video.

It should, however, be possible to do proper colorspace conversion with the interlaced image before handing it to the renderer, but I'm not sure whether hardware deinterlacing works with/is applied to RGB images - I rather doubt it...

np: Yage - He Laughed Himself To The Centre (The Woodlands Of Old)

[mark0077]

Thanks Leak. Yeah it seems hardware deinterlacing is dependent upon the colorspace its given, at least on my nvidia cards. Oh well.... trying to familiarize myself with the following dvd player benchmarks http://www.hometheaterhifi.com/volume_10_1/dvd-benchmark-guide-to-progressive-scan-shootout-1-2003.html to see how we could come up with software tests..

Its really the only annoying thing in my setup at the moment, having to manually enable or disable deinterlacing for dvd's. Interesting stuff.... I would love to see ffdshow on that site as no1 for ... well all of the benchmarks they come up with :D:D Its probably completely a libavcodec and libmpeg2 thing.. with the correctly set flags being sent to ffdshow maybe.

[albain]

Hi,

I think I have fixed the bugs remaining on HD audio formats :

MLP/Dolby True HD sound garbled with heavy jiter
LPCM tracks from blurays : sound was garbled


Fixed in revision 2682.
Please report if there are still issues.

Regards,

Damien BT

[ikarad]

Hi,

I think I have fixed the bugs remaining on HD audio formats :

MLP/Dolby True HD sound garbled with heavy jiter
LPCM tracks from blurays : sound was garbled


Fixed in revision 2682.
Please report if there are still issues.

Regards,

Damien BT
where can we download this version? Because here
https://sourceforge.net/project/showfiles.php?group_id=173941
the last version is 2676

and www.xvidvideo.ru doesn't work

[albain]

where can we download this version? Because here
https://sourceforge.net/project/showfiles.php?group_id=173941
the last version is 2676

and www.xvidvideo.ru doesn't work

I am currently building one. Please wait for a while...

[ikarad]

I am currently building one. Please wait for a while...

thanks

[clsid]

New build is online.

[Brazil2]

New build is online.
Does this build include Whurlston's patch (http://forum.doom9.org/showthread.php?p=1247644#post1247644) ?

And if so, is there any chance for an ICL10 build ? Please :)

[clsid]

The patch was committed to SVN, so yes it is included.

I don't have time right now for an ICL build. Those are available when they are availabe.

[Atak_Snajpera]

P.S. any news about ffmpeg-mt 64-bit ?
or just -mt 32bit?

[ikarad]

Hi,

I think I have fixed the bugs remaining on HD audio formats :

MLP/Dolby True HD sound garbled with heavy jiter
LPCM tracks from blurays : sound was garbled


Fixed in revision 2682.
Please report if there are still issues.

Regards,

Damien BT
thanks,
MLP seems to work well with my blu-rays.
But with LPCM there is still problems.
1) If in audio menu of MPC-HC, MLP is the first selected ffdshow is loaded
http://nsa05.casimages.com/img/2009/02/14/mini_090214061811672392.jpg (http://www.casimages.com/img.php?i=090214061811672392.jpg)

and I can select select LPCM soudntrack.
http://nsa05.casimages.com/img/2009/02/14/mini_090214062001829470.jpg (http://www.casimages.com/img.php?i=090214062001829470.jpg)


Now, if in audio menu of MPC-HC there is no MLP soundtrack, FFSDHOW isn't loaded even if LPCM decoder isn't selected in MPC-HC. Although LPCM is selected in codec from ffdshow audio
http://nsa05.casimages.com/img/2009/02/14/mini_090214062154461511.jpg (http://www.casimages.com/img.php?i=090214062154461511.jpg)
http://nsa05.casimages.com/img/2009/02/14/mini_090214062234286479.jpg (http://www.casimages.com/img.php?i=090214062234286479.jpg)
http://nsa05.casimages.com/img/2009/02/14/mini_090214062322248103.jpg (http://www.casimages.com/img.php?i=090214062322248103.jpg)

2) With MLP soundtrack
the current input bitrate line works well
http://nsa05.casimages.com/img/2009/02/14/mini_090214062548411407.jpg (http://www.casimages.com/img.php?i=090214062548411407.jpg)

But with LPCM soudntrack this line is always 0.
http://nsa05.casimages.com/img/2009/02/14/mini_090214062709130792.jpg (http://www.casimages.com/img.php?i=090214062709130792.jpg)


the example with only lpcm tracks
example with lpcm 2.1 and lpcm 6.1 soundtrack
http://www.zshare.net/info.html?55241905-3d52058746470a1fa90c6eed8b81c6ea

bugtracker
https://sourceforge.net/tracker2/?func=detail&aid=2600248&group_id=173941&atid=867360

[Leak]

or just -mt 32bit?
It's been merged into the trunk - just download clsid's rev. 2684 build and choose "ffmpeg-mt" as the H.264 codec...

np: Humanoid - 3AM And Feeling OK (King Roc Mix) (Your Body Robotic (Disc 1))

[fofwp]

I am trying to get TrueHD decoding to work with ffdshow. The movie is Tropic Thunder, and I created the m2ts file using Ts4Np v0.8.2.0. I had Bypass audio alignment and Use async I/O unchecked.

When I try to play the file back in MPC-HC, no audio is decoded. I have set ffdshow as preferred in external filters, and have set all stable formats to libavcodec. I am using Haali Media Splitter. Is there something I am doing wrong?

[clsid]

Try with the internal MPEG splitter of MPC-HC. I don't think Haali Media Splitter recognizes TrueHD yet.

[albain]

thanks,
MLP seems to work well with my blu-rays.
But with LPCM there is still problems.
1) If in audio menu of MPC-HC, MLP is the first selected ffdshow is loaded
and I can select select LPCM soudntrack.
Now, if in audio menu of MPC-HC there is no MLP soundtrack, FFSDHOW isn't loaded even if LPCM decoder isn't selected in MPC-HC. Although LPCM is selected in codec from ffdshow audio
2) With MLP soundtrack
the current input bitrate line works well

But with LPCM soudntrack this line is always 0.
the example with only lpcm tracks
example with lpcm 2.1 and lpcm 6.1 soundtrack

Ok, I will check after these. I had noticed the 1st problem (FFDShow not loaded for LPCM) and I had to force the submediatype in MPC-HC so that it would load it.
I didn't realized that this was a ffdshow bug too.

Concerning ICL10, my build is also posted and they all are built with ICL 10.1


*EDIT* : problem #1 is fixed in revision 2686. Problem #2 is minor, I will look after it when I will have time

[albain]

I posted an updated build (this is not a race I know) : build 2686 including LPCM fix (I hope)

Regards,

Damien BT

[fofwp]

Try with the internal MPEG splitter of MPC-HC. I don't think Haali Media Splitter recognizes TrueHD yet.

Yep that did the trick. Thanks.

[Snowknight26]

ffdshow's grab function takes screenshots with bad colors:
http://www.stfcc.org/misc/ffdshow.r2686.png
http://www.stfcc.org/misc/mpc-hc.r990.png

The filter chain was something like Haali Media Splitter -> ffdshow (decoding H.264) -> ffdshow (decoding YV12 - took screenshot) -> Renderer (in MPC-HC).

[chros]

It's been merged into the trunk - just download clsid's rev. 2684 build and choose "ffmpeg-mt" as the H.264 codec...

Woow !!!
But, is it possible that I can't select it in the config panel???
I selected during install, but in the config it shows an empty value, and at the info page it displays: libavcodec h.264 ...

[ikarad]

I posted an updated build (this is not a race I know) : build 2686 including LPCM fix (I hope)

Regards,

Damien BT

Yes it works.
Thank you very much.

[Atak_Snajpera]

I selected during install, but in the config it shows an empty value, and at the info page it displays: libavcodec h.264 ...
I have no problems.

[whurlston]

Thank you for your patch. I am testing it and working on bugfixes on this part.No problem. Thanks for all the hard work on HD audio in general. I was just doing the easy part. I'm new to the whole patching thing and C++ is not one of my strengths so please excuse any newbie errors.

[haruhiko_yamagata]

Woow !!!
But, is it possible that I can't select it in the config panel???
I selected during install, but in the config it shows an empty value, and at the info page it displays: libavcodec h.264 ...
Can you find pthreadGC2.dll in your system32 directory?

[chros]

Can you find pthreadGC2.dll in your system32 directory?
and @ Atak_Snajpera: thanks, I just needed a reboot ... :(

[Jeremy Duncan]

I have a bug report for the developers.

This is the script that causes the player to crash:
________ advanced ffdshow: framerate doubler. For ntsc(60hz) and pal(50hz) monitors. ________ (http://forum.doom9.org/showthread.php?t=115727)
Click link and look for configuration.
All the plugins and sw used is in that thread.
I use media player classic from that thread.
This is on xp pro media center edition, all updated.
A Ati 2600 pcie video card.
A e6600 cpu, not overclocked.
I'm using the dvi/hdmi dongle from the video card and hdmi to the 60hz lcd tv.

I have tried these steps to find the problem:
Different output colorspaces.
Specifying yv12 input colorspace.
Different avisynth configurations.
Not using the queue output samples.
Different rgb conversion tab settings.
Using the newest zoomplayer pro.
Trying the latest avisynth with no mt, and setting the avisynth script to use no mt.
I tried not using the ffdshow mpeg2 decoder and different ffdshow mpeg2 decoder.

I found the last ffdshow version that this configuration can be played on is the "2653" version by clsid.
At 2661 and anything higher the movie crashes at the warning screen.
I tried albains latest one too and that also crashed.

This player does not always cash, ot pnly crashed on one movie out of the three I tried.
Linked to in the link I gave, it did not crash on the progressive TEST DISK (ntsc), or the nsc sddvd Ghost in the Shell Anime.
It does crash on the movie "The Transporter 2" every time.
That anime does not have a root menu and it does not have a warning screen I think, just pop it and the the movie starts after the owners banner.

So I think this has something to do with the warning screen, since the movies that did not crash did not have a warning screen.

I will list the svn updates that may have caused the problem:
Revision 2661 - Directory Listing
Modified Sat Feb 7 14:44:18 2009 UTC (7 days, 22 hours ago) by clsid2

Updated FFmpeg

Revision 2660 - Directory Listing
Modified Sat Feb 7 08:55:27 2009 UTC (8 days, 4 hours ago) by h_yamagata

Use MSVC's STL instead of uClibc++.

Revision 2659 - Directory Listing
Modified Sat Feb 7 08:36:59 2009 UTC (8 days, 4 hours ago) by h_yamagata

ffdshow color space converters: separate some files

Revision 2658 - Directory Listing
Modified Sat Feb 7 07:37:36 2009 UTC (8 days, 5 hours ago) by h_yamagata

Optimize ffdshow color space converters: 6% faster (RGB32)

Revision 2657 - Directory Listing
Modified Fri Feb 6 17:27:33 2009 UTC (8 days, 20 hours ago) by clsid2

Updated FFmpeg

Revision 2656 - Directory Listing
Modified Fri Feb 6 14:24:22 2009 UTC (8 days, 23 hours ago) by h_yamagata

The new ffdshow color space converters:
Improve API and documentation

Revision 2655 - Directory Listing
Modified Fri Feb 6 10:52:25 2009 UTC (9 days, 2 hours ago) by h_yamagata

YCbCr specification: Auto:
width > 1024 or height >=600: BT.709
width <=1024 and height < 600: BT.601

Revision 2654 - Directory Listing
Modified Wed Feb 4 17:50:47 2009 UTC (10 days, 19 hours ago) by clsid2

Removed VS2003 project files


If you want to make this simple. Just make ffdshow version of each update I listed and I will try each one out and tell you when ffdshow begins to crash.

Edit.
I think update 2660 caused the problem.
Maybe make a 2659 version and I will tell you if that's the case. :)

[Steveo08]

mayby some one can help me, to fix my problem with ffdshow output. i want to use the colorspace "YV12", but i can't, because if i select "YV12" i always get an error message with mpc:

"MPC could not render some of the pins in the graph...etc."

i reinstall ffdshow for a few times, but it doesn't work.

[clsid]

Some renderers (like Haali) do not support YV12 input.

[Steveo08]

Some renderers (like Haali) do not support YV12 input.



thank you, because i am using haali video renderer, that would explain why it won't work! :-)

[iron2000]

I can't play DVDs.
Tried loading with MPCHC but as soon as it loads, an error dialog pops up and on clicking for more information, ffdshow.ax is shown:

AppName: mplayerc.exe AppVer: 1.2.986.0 ModName: ffdshow.ax
ModVer: 1.0.5.2471 Offset: 00201d3b

Does anybody have a clue to this problem?

[tal.aloni]

ffdshow's grab function takes screenshots with bad colors:
http://www.stfcc.org/misc/ffdshow.r2686.png
http://www.stfcc.org/misc/mpc-hc.r990.png

The filter chain was something like Haali Media Splitter -> ffdshow (decoding H.264) -> ffdshow (decoding YV12 - took screenshot) -> Renderer (in MPC-HC).

Snowknight26,
1. which revision?
2. do you have "High quality yv12 to rgb conversion" turned on?

I can't recreate this with rev. 2644, I'll test later revisions at the weekend (during encode at the moment)

Tal

[Leak]

I can't play DVDs.
Tried loading with MPCHC but as soon as it loads, an error dialog pops up and on clicking for more information, ffdshow.ax is shown:

AppName: mplayerc.exe AppVer: 1.2.986.0 ModName: ffdshow.ax
ModVer: 1.0.5.2471 Offset: 00201d3b

Does anybody have a clue to this problem?
Does it still crash if you don't use ffdshow's audio decoder, i.e. if you enable MPC-HC's internal audio decoders?

Because if it doesn't I've just fixed that crash in rev. 2691... :)

np: Distance - Radical (Chestplate)

[Snowknight26]

Snowknight26,
1. which revision?
2. do you have "High quality yv12 to rgb conversion" turned on?

It's in the file name. :P r2686.
Yes, High quality YV12 to RGB was checked.

I also have word that someone else is having this problem too (HQ YV12 -> RGB is on as well).

[Jeremy Duncan]

Does it still crash if you don't use ffdshow's audio decoder, i.e. if you enable MPC-HC's internal audio decoders?

Because if it doesn't I've just fixed that crash in rev. 2691... :)

np: Distance - Radical (Chestplate)

Was the update you made, 2691, made to the mpeg2 codec "libmpeg2"?

I ask because when the ffdshow developers update that codec again I know what to ask to be fixed. :)

[Leak]

Was the update you made, 2691, made to the mpeg2 codec "libmpeg2"?
No (http://ffdshow-tryout.svn.sourceforge.net/viewvc/ffdshow-tryout?view=rev&revision=2691) - it was an update to the audio decoder.

np: Distance - Present Day (Chestplate)

[iron2000]

Does it still crash if you don't use ffdshow's audio decoder, i.e. if you enable MPC-HC's internal audio decoders?

Because if it doesn't I've just fixed that crash in rev. 2691... :)

np: Distance - Radical (Chestplate)

!!
I works!
With MPC-HC's internal audio decoder the DVD plays.

:thanks:

[Jeremy Duncan]

The bug I wrote about in post 6637 was the audio bug Leak fixed.

When I disable ffdshow audio in mpc the problem goes away.
It is puzzling though, since the svn changelog does not mention ffdshow audio in the updates 2654 to 2661, and it was in one of those updates the audio bug I wrote about appeared. :)

Edit.

When can we expect a new build from clsid or Albain or xxl?

[Leak]

It is puzzling though, since the svn changelog does not mention ffdshow audio in the updates 2654 to 2661, and it was in one of those updates the audio bug I wrote about appeared. :)
It probably was 2660 - it was an assertion triggered by trying to reference the first byte of a buffer of size zero via an iterator, and while uClibc++ didn't check this MS's library does...

Simply skipping that part of the code if the size is zero does the trick without any ill effects.

[clsid]

I have added an updated MinGW32 installer to first post.

[tal.aloni]

It's in the file name. :P r2686.
Yes, High quality YV12 to RGB was checked.

Snowknight26,
I have tested ffdshow_rev2686_20090214_dbt.exe, and also tested rev. 2693 (xvidvideo.ru), both generic & icl10 and could not recreate this. (AFAIK, there are two color conversion functions, one for CPUs with mmx, the other for CPUs without)

1. are you sure the input is YV12? (some decoders output YUY2)

2. please make sure there's no more than one ffdshow instance in the graph. (DirectShow Control)

3. please try to provide more information on the build you're using, and when does it happen / not happen, or which is the first version that triggers it.

Tal