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Old 11th November 2010, 05:01   #12661  |  Link
TheShadowRunner
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Quote:
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It seems libavcodec's VP6F decoding has a slight bug. Here is a sample video:
http://videoff7.free.fr/FF13_fn.avi (15megs)
When decoded by ffdshow, there is some disturbance at the very bottom of the screen, all along. When played via activex (on website), there is no such artefact.
I tried every renderer and no changes, if anyone has a clue on how to solve this? ^^;
Another libavcodec decoding bug, this time for DX50 :
With Divx4/5/6 set as libavcodec, the video plays at 22.330 fps (?)
With Divx4/5/6 set as Xvid, the video plays OK at 25.000 fps.
A sample: http://videoff7.free.fr/buglibav.avi

If this is not the right place to report libavcodec decoding issues (my libavcodec VP6F decoding bug report didn't get many replies ^^), please let me know where I should do it.
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Old 11th November 2010, 07:10   #12662  |  Link
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Is anyone able to tell me why I am unable to get subtitles on screen (with internal .srt subs - blu-ray subs are OK) when both DXVA (ffdshow) and any EVR renderer (custom, sync etc) is enabled? I've never had any problems with these settings before until recent builds.

Surface overlay is enabled and (obviously) all the right boxes are ticked inside the subtitles menu within FFVA so I have no idea why it's not working.

Also, is anyone able to tell me why I get horizontal screen tearing across the MPC-HC player when playing a video which uses DXVA and the EVR renderer? The problem disappears when I use the EVR custom renderer though.

If it is relevant to screen tearing, I do NOT have aero enabled.
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Old 11th November 2010, 10:15   #12663  |  Link
nm
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Quote:
Originally Posted by TheShadowRunner View Post
If this is not the right place to report libavcodec decoding issues (my libavcodec VP6F decoding bug report didn't get many replies ^^), please let me know where I should do it.
FFmpeg bug tracker

Read this first: http://www.ffmpeg.org/bugreports.html

You should test with ffplay from latest FFmpeg SVN. Latest MPlayer compiled against FFmpeg SVN might also do.
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Old 14th November 2010, 15:41   #12664  |  Link
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Hi,
ffdshow is a really great project supporting so many codecs with advanced post-processing. Thank you very much for developing it!
I have still some older avi-files using codecs that ffmpeg supports but I cannot play them with ffdshow, so I have the feature request to add those codecs:

-Indeo 5
-I263
-Ati VCR2 (ffdshow can play it by changing the fourcc to "MPG2", but colors are wrong)

Another problem is even when Atrac3 is enabled in ffdshow, MPC-HD cannot play RealMedia with Atrac3, I donīt know if itīs a ffdshow or a mpc-hd problem.
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Old 14th November 2010, 16:50   #12665  |  Link
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Quote:
Originally Posted by TheShadowRunner View Post
Another libavcodec decoding bug, this time for DX50 :
With Divx4/5/6 set as libavcodec, the video plays at 22.330 fps (?)
With Divx4/5/6 set as Xvid, the video plays OK at 25.000 fps.
A sample: http://videoff7.free.fr/buglibav.avi

If this is not the right place to report libavcodec decoding issues (my libavcodec VP6F decoding bug report didn't get many replies ^^), please let me know where I should do it.
This one FFmpeg handles ok, so it is not an issue in libavcodec itself. The problem here is that the AVI claims 25 fps, but the MPEG-4 headers say 30 fps.
For the VP6F one, the AVI says the height is 416 pixels, however the correct value is maybe 408 or something like that. There is no "extradata" that would indicate the need for cropping either. Are you sure that this information didn't get lost at some point so what ffdshow decodes is simply the best it can do with the information in the file?
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Old 14th November 2010, 19:32   #12666  |  Link
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nm, thanks for the info.

Reimar, thanks a buch for testing.
About the AVI's wrong header, I should have checked that first ^^;;
It's just odd "Divx4/5/6 as libavcodec" is bugged when "Divx4/5/6 as Xvid" isn't with this file.

About the VP6F one, i guess remuxing it into an AVI is what made it lose its extradata and/or cropping info.. likely.
I'm going to play around some more with this one
Thanks again,

TSR
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Old 15th November 2010, 10:40   #12667  |  Link
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Good morning.

Sorry for the stupid question.

Why using version rev2099_20080903_clsid_sse_icl10
The subtitles will play normally.








Instead, using all the latest releases, including the
rev3629_20101113_xvidvideo-ru_x86_icl11
the subtitles will not play.
Direct show filters are the same as the previous configuration.








What's wrong?

THANKS

Last edited by DMD; 15th November 2010 at 10:44.
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Old 15th November 2010, 10:51   #12668  |  Link
nevcairiel
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As you can see in the filter graph, with the older version the cyberlink decoder dealt with the subtitles, and in the newer graph ffdshow trys to handle them.

You can try to disable VobSub subtitles in ffdshow (or all subtitles), and let the Cyberlink handle it. This will not solve the issue in ffdshow, but should in theory get you subtitles back.
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Old 15th November 2010, 11:06   #12669  |  Link
DMD
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Quote:
Originally Posted by nevcairiel View Post
As you can see in the filter graph, with the older version the cyberlink decoder dealt with the subtitles, and in the newer graph ffdshow trys to handle them.

You can try to disable VobSub subtitles in ffdshow (or all subtitles), and let the Cyberlink handle it. This will not solve the issue in ffdshow, but should in theory get you subtitles back.
I tried to turn off the subtitles in the tab of ffdshow, the problem remains.

I also tried to perform the MPEG-2 decoder to Cyberlink ffdshow eliminating, the problem remains.




Last edited by DMD; 15th November 2010 at 11:08.
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Old 16th November 2010, 07:23   #12670  |  Link
LigH
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You must have misunderstood everything...

If you play a DVD (which has MPEG2 video), and you want the Cyberlink decoder handle the MPEG2 video instead of ffdshow, you have to disable the MPEG2 codec in ffdshow.

But you disabled the opposite - everything but MPEG2 ?!?
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Old 16th November 2010, 08:59   #12671  |  Link
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I have tried both with the MPEG-2 enabled and disabled,
the problem remains.

Because with the release rev2099_20080903_clsid_sse_icl10,
i have no problem?

THANKS

Last edited by DMD; 16th November 2010 at 09:03.
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Old 16th November 2010, 13:17   #12672  |  Link
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Problem bitstreaming DTS

I am having problems bitstreaming DTS with ffdshow (svn 3627 (x86) icl11). I am using the demo videos "DTS experience" and "DTS sparks sprites mix" to test and I don't get any audio from my Onkyo 1007.

I have also tried with AC3Filter and it seems to work fine.

I am using the latest build of MPC-HC and I have Dts pass-through enabled in the ffdshow output options together with libavcodec selected in the DTS codec field.

Dolby True HD bisteaming works for me but DTS and DTS-HD MA do not.

Can anyone else confirm this is a problem or is it a problem on my side somewhere?

( you can get the demo videos from http://www.demo-world.eu/trailers/dts-trailers.php )

Thanks.

Last edited by entrecour; 16th November 2010 at 14:34. Reason: ffdshow version
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Old 16th November 2010, 18:56   #12673  |  Link
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Try changing the "Compatibility options" on the Output page in ffdshow audio decoder settings.
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Old 16th November 2010, 22:57   #12674  |  Link
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That was it - when I changed from "Try all formats" to "Try only standard formats" things started to move in the right direction. Rather counter intuitive.

Even though AC3Filter was blocked in MPC it kept inserting itself into the filter chain. After disabling all formats within AC3filter options bitstreaming started to work.

I also had to use Reclock or DirectSound instead of the Intel Audio device / AVR specified as the renderer in MPC.

So I can now bitstream Dolby True HD, DTS, and DST-HD MA.

Having some issues doing the same with DVBViewer / ffdshow but I need to do further testing there.
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Old 21st November 2010, 16:07   #12675  |  Link
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Requesting a proper ASS renderer in ffdshow DXVA, please.
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Old 22nd November 2010, 22:42   #12676  |  Link
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@all: with the help of sansnom05, ffdshow can be built with ICL12. Here is a build. Let me know if you find any problems compared to the ICL11 builds.
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Old 23rd November 2010, 08:21   #12677  |  Link
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Quote:
Originally Posted by XhmikosR View Post
@all: with the help of sansnom05, ffdshow can be built with ICL12. Here is a build. Let me know if you find any problems compared to the ICL11 builds.
got it! testing.
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Old 24th November 2010, 14:35   #12678  |  Link
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Originally Posted by XhmikosR View Post
Let me know if you find any problems compared to the ICL11 builds.
I got some occasional audio glitches. Occurred regardless of codec or number of channels. Rolling back to ICL11 fixed it.
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Old 25th November 2010, 10:42   #12679  |  Link
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Weird, I have no problems at all with every sample I have tried using the ICL12 build. You will have to provide a sample with which the problem you describe can be reproduced and also your ffdshow settings.
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Old 26th November 2010, 12:37   #12680  |  Link
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I've been testing the ICL12 build, no problems so far with several filters enabled.
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That way, you have xxxx[p|i]yyy, where xxxx is the vertical resolution, yyy is the temporal resolution, and 'i' says the image has been irremediably destroyed.
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