ffdshow tryouts project: Discussion & Development - Page 199

pitch.fr · 15th August 2008, 02:13

yes, but you're never sure of what order they'll be opened in.

and they would all use the same settings.

but that's OK, unsharp masking prior to LSF looks good too.

and with my 3.3Ghz Q6600, I can run LSF and DDCC in real time to get SMPTE-C gamut conversion(the native gamut of DVD/BD)

Avisynth support in ffdshow is really awesome

and I've recently found out that doing 24/96 upsampling in AC3filter was multithreaded, 96KHz upsampling in ffdshow is a lot more CPU/jitter intensive.

bottom line is : a +3Ghz Q6600 is like the ultimate CPU to use ffdshow+avisynth

besides, the ICL10 versions of ffdshow seem a bit faster, thanks clsid!

Rumbah · 15th August 2008, 15:40

Quote:

Originally Posted by Rumbah

I just ran into a problematic sample but I don't know if it's the fault of ffdshow, Avisynth or the stream itself.

If I play the original video file in Virtualdub via ffdshow VFW it works. The playback with FFPlay also works. But if I open the video via Avisynth, the ending gets corrupted (and I get a green first frame). I'm using ffdshow beta 5. I did a test encode with the video to show the corrupted results I get.

I tried the latest version (rev 2079) but the problem still isn't gone. If I can provide any further information that helps just tell me

clsid · 15th August 2008, 16:12

The likelihood of your problem being fixed any time soon is exactly zero. Reason: there are no active developers in the ffdshow project at this moment.

The only updates that are currently being done to ffdshow are related to libavcodec.

Rumbah · 15th August 2008, 16:57

Quote:

Originally Posted by clsid

The likelihood of your problem being fixed any time soon is exactly zero. Reason: there are no active developers in the ffdshow project at this moment.

That's sad to hear.
Then I'll just have to use FFmpegSource as I don't get the error that way.

iron2000 · 15th August 2008, 19:21

Found out that my Vorbis problem is with the changes in the kX DSP.
Problem now solved.

pitch.fr · 16th August 2008, 15:32

is there a way to get some good DeHalo/Dering in ffdshow ?
I've tried the Dering in the "post processing" filter, but it isn't working too well on strongly halo'ed videos.

and the Avisynth filters I've found are slooooooow as hell.

you see, the Gothika BD is just unwatchable :

Mercury_22 · 16th August 2008, 19:25

Hi !
Please help me

I have an old problem : I can't play (only black screen with sound) many mpeg4 / DX50, (encoder XviD build 37) files on Vista & EVR output
This problem apperas only with Intel video "cards" and EVR or Evr custom output (=Vista).
If I use DivX codec or any player with VMR output on vista (= NO WMP) or any other video card I have no problem !
So i'm thinking if divx it's working why ffdshow isn't ?

Here is a sample Mpeg4Test or Mirror

Edit: solved thanks to clsid : I've just disabled YV12 in ffdshow output settings !
Why it's ffdshow the only one with Forced by default YV12 Colorspace output ? (DivX or Xvid don't have this by default)

Eragon4ever · 16th August 2008, 22:58

http://samples.mplayerhq.hu/V-codecs...cing-balls.avi

This video does not play correctly in ffdshow, it does however in ffplay (thanks for updating the build, clsid). This is how it should look like:
http://img401.imageshack.us/img401/396/snap0010eu5.png

In ffdshow the on-screen text is light blue and the balls are red<->blue.

clsid · 17th August 2008, 01:12

Yes, colors are wrong, even with an up-to-date version of libavcodec. I don't know why. Perhaps a colorspace issue. I have no idea how to fix it.

pjo · 18th August 2008, 07:14

Hello folks. I am trying to find out why AAC5.1 audio is not played ok with MPC.

If MPC setting is changed not to use ffdshow, it plays ok.

http://rapidshare.de/files/40262409/...tted.m2ts.html

This is the first portion of the file. The first few seconds portion is an ending of a news show with mono AAC (probably), then the main show starts with AAC5.1.

After cutting the news portion with tsMuxeR, the main show is really AAC5.1 when played with MPC without using ffdshow.

Does ffdshow support AAC5.1 ?

pjo

pjo · 18th August 2008, 13:56

Quote:

Originally Posted by pjo

Hello folks. I am trying to find out why AAC5.1 audio is not played ok with MPC.

If MPC setting is changed not to use ffdshow, it plays ok.

http://rapidshare.de/files/40262409/...tted.m2ts.html

This is the first portion of the file. The first few seconds portion is an ending of a news show with mono AAC (probably), then the main show starts with AAC5.1.

After cutting the news portion with tsMuxeR, the main show is really AAC5.1 when played with MPC without using ffdshow.

Does ffdshow support AAC5.1 ?

pjo

I was able to cut the first part of the mono news show segment of the .m2ts file with MurdocCutter. And then it has only AAC5.1 part. It plays ok with ffdshow or AAC decoder. Checking "downmix to stereo" does not matter in this case.

VLC and MPC with AAC decoder can cope with the sudden change of the audio channel format. MPC with ffdshow does not cope with this change.

pjo

tetsuo55 · 19th August 2008, 13:51

For which codecs can ffdshow be considered as Best of the pack? i know that its Divx/Xvid decoder is the fastest while maintaining the same quality.

What about the other audio/video codecs?

Sharktooth · 19th August 2008, 14:21

there is no Best... as usual. however i use it for everything...

tetsuo55 · 19th August 2008, 15:20

well in this case Best could be used because:

These applications are all doing the same thing in the same way to reach the exact same result. all things equal it comes down to the one that uses the least CPU time.

The only problem is the output image is not always bit-for-bit identical (usually this means a bug in the decoder, better/worse post processing(which im not asking about at this time) or better/worse handeling of errors in the bitstream)

i once read a mpeg1 comparison where one of the decoders "fixed" the bitstream errors with a psychovisual repair of the broken pixels. It used a bleed effect to mask them, kinda like Philips Ambilight

Sharktooth · 19th August 2008, 15:35

nope... "best" cant apply coz i may prefer PP options while others may prefer the speed or the multithreading or other factors/features.
"best" is ALWAYS subjective and there is NO case where the word "best" is appopriate except "best is what's best for yourself". hence the forum rule number 12...

tetsuo55 · 19th August 2008, 15:46

Quote:

Originally Posted by Sharktooth

nope... "best" cant apply coz i may prefer PP options while others may prefer the speed or the multithreading or other factors/features.
"best" is ALWAYS subjective and there is NO case where the word "best" is appopriate except "best is what's best for yourself". hence the forum rule number 12...

Fair enough.

Question:

Which of the codecs in FFdshow meet the following requirements for me:
*Has bit-for-bit equal image quality to other decoders(Basically just displays the image as it was ment to be displayed)
*Has the fastest/equal decoding engine when compared to the competition
*Has better/equal handling of broken files than competing decoders
*Has better/equal bitstream error handling than competing decoders(psychovisual fixes are a bonus)

I believe the post-processing engine in FFdshow is seperated from the codecs, so in this case the quality of post-processing does not matter. (if you happen to know the difference in quality for PP though please mention it)

Dark Shikari · 19th August 2008, 15:54

Quote:

Originally Posted by tetsuo55

*Has bit-for-bit equal image quality to other decoders(Basically just displays the image as it was ment to be displayed)

H.264, since nearly no other lossy format has that (MPEG-4 ASP certainly doesn't), and FFDshow's support for VC-1 isn't totally complete.

tetsuo55 · 19th August 2008, 15:58

Quote:

Originally Posted by Dark Shikari

H.264, since nearly no other lossy format has that (MPEG-4 ASP certainly doesn't), and FFDshow's support for VC-1 isn't totally complete.

Hmm i didn't know that. The only way to compare would be PSNR between source and transcoded image played back with the available decoders for that format with all PP disabled

Dark Shikari · 19th August 2008, 16:06

Quote:

Originally Posted by tetsuo55

Hmm i didn't know that. The only way to compare would be PSNR between source and transcoded image played back with the available decoders for that format with all PP disabled

No comparison necessary, any format that uses DCT and doesn't specify an exact DCT approximation is inherently not bit-exact.

Sharktooth · 19th August 2008, 16:06

the h.264 standard includes bit exact decoding. if the decoder isnt able to do it then it's not compliant.
you may be almost safe assuming the major h.264 known decoders are displaying the SAME picture.

15th August 2008, 02:13	#3961 \| Link
pitch.fr Didée 4 President Join Date: Jun 2008 Posts: 240	yes, but you're never sure of what order they'll be opened in. and they would all use the same settings. but that's OK, unsharp masking prior to LSF looks good too. and with my 3.3Ghz Q6600, I can run LSF and DDCC in real time to get SMPTE-C gamut conversion(the native gamut of DVD/BD) Avisynth support in ffdshow is really awesome and I've recently found out that doing 24/96 upsampling in AC3filter was multithreaded, 96KHz upsampling in ffdshow is a lot more CPU/jitter intensive. bottom line is : a +3Ghz Q6600 is like the ultimate CPU to use ffdshow+avisynth besides, the ICL10 versions of ffdshow seem a bit faster, thanks clsid! Last edited by pitch.fr; 15th August 2008 at 13:35.

15th August 2008, 16:12	#3963 \| Link
clsid Registered User Join Date: Feb 2005 Posts: 2,722	The likelihood of your problem being fixed any time soon is exactly zero. Reason: there are no active developers in the ffdshow project at this moment. The only updates that are currently being done to ffdshow are related to libavcodec. __________________ [ ffdshow SVN builds \| ffdshow SVN changelog ]

16th August 2008, 19:25	#3967 \| Link
Mercury_22 Registered User Join Date: Dec 2007 Posts: 489	Hi ! Please help me I have an old problem : I can't play (only black screen with sound) many mpeg4 / DX50, (encoder XviD build 37) files on Vista & EVR output This problem apperas only with Intel video "cards" and EVR or Evr custom output (=Vista). If I use DivX codec or any player with VMR output on vista (= NO WMP) or any other video card I have no problem ! So i'm thinking if divx it's working why ffdshow isn't ? Here is a sample Mpeg4Test or Mirror Edit: solved thanks to clsid : I've just disabled YV12 in ffdshow output settings ! Why it's ffdshow the only one with Forced by default YV12 Colorspace output ? (DivX or Xvid don't have this by default) __________________ Windows 7 x64, EVR CP Default Settings, Catalyst 9.11, HD4670, SAMSUNG LE32A656 HDMI, Realtek ALC889A, E8400, 4GB DDR2 Last edited by Mercury_22; 18th August 2008 at 11:14.

17th August 2008, 01:12	#3969 \| Link
clsid Registered User Join Date: Feb 2005 Posts: 2,722	Yes, colors are wrong, even with an up-to-date version of libavcodec. I don't know why. Perhaps a colorspace issue. I have no idea how to fix it. __________________ [ ffdshow SVN builds \| ffdshow SVN changelog ]

18th August 2008, 07:14	#3970 \| Link
pjo Registered User Join Date: Dec 2005 Posts: 59	Hello folks. I am trying to find out why AAC5.1 audio is not played ok with MPC. If MPC setting is changed not to use ffdshow, it plays ok. http://rapidshare.de/files/40262409/...tted.m2ts.html This is the first portion of the file. The first few seconds portion is an ending of a news show with mono AAC (probably), then the main show starts with AAC5.1. After cutting the news portion with tsMuxeR, the main show is really AAC5.1 when played with MPC without using ffdshow. Does ffdshow support AAC5.1 ? pjo Last edited by pjo; 18th August 2008 at 08:17.

15th August 2008, 19:21	#3965 \| Link
iron2000 Questioning User Join Date: Jan 2005 Posts: 120	Found out that my Vorbis problem is with the changes in the kX DSP. Problem now solved.

16th August 2008, 15:32	#3966 \| Link
pitch.fr Didée 4 President Join Date: Jun 2008 Posts: 240	is there a way to get some good DeHalo/Dering in ffdshow ? I've tried the Dering in the "post processing" filter, but it isn't working too well on strongly halo'ed videos. and the Avisynth filters I've found are slooooooow as hell. you see, the Gothika BD is just unwatchable :

16th August 2008, 22:58	#3968 \| Link
Eragon4ever lost program in the net Join Date: Jun 2006 Location: Germany Posts: 104	http://samples.mplayerhq.hu/V-codecs...cing-balls.avi This video does not play correctly in ffdshow, it does however in ffplay (thanks for updating the build, clsid). This is how it should look like: http://img401.imageshack.us/img401/396/snap0010eu5.png In ffdshow the on-screen text is light blue and the balls are red<->blue.

19th August 2008, 13:51	#3972 \| Link
tetsuo55 MPC-HC Project Manager Join Date: Mar 2007 Posts: 1,567	For which codecs can ffdshow be considered as Best of the pack? i know that its Divx/Xvid decoder is the fastest while maintaining the same quality. What about the other audio/video codecs?

19th August 2008, 14:21	#3973 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 10,818	there is no Best... as usual. however i use it for everything... __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!!

19th August 2008, 15:20	#3974 \| Link
tetsuo55 MPC-HC Project Manager Join Date: Mar 2007 Posts: 1,567	well in this case Best could be used because: These applications are all doing the same thing in the same way to reach the exact same result. all things equal it comes down to the one that uses the least CPU time. The only problem is the output image is not always bit-for-bit identical (usually this means a bug in the decoder, better/worse post processing(which im not asking about at this time) or better/worse handeling of errors in the bitstream) i once read a mpeg1 comparison where one of the decoders "fixed" the bitstream errors with a psychovisual repair of the broken pixels. It used a bleed effect to mask them, kinda like Philips Ambilight

19th August 2008, 15:35	#3975 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 10,818	nope... "best" cant apply coz i may prefer PP options while others may prefer the speed or the multithreading or other factors/features. "best" is ALWAYS subjective and there is NO case where the word "best" is appopriate except "best is what's best for yourself". hence the forum rule number 12... __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!! Last edited by Sharktooth; 19th August 2008 at 15:38.

19th August 2008, 16:06	#3980 \| Link
Sharktooth Mr. Sandman Join Date: Sep 2003 Location: Haddonfield, IL Posts: 10,818	the h.264 standard includes bit exact decoding. if the decoder isnt able to do it then it's not compliant. you may be almost safe assuming the major h.264 known decoders are displaying the SAME picture. __________________ MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!!

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