WMV and FFDSHOW audio filter

granx · 2006-09-07, 23:02

MediaPortal Version: 0.2.0.4
MPEG2 Video Codec: NVIDIA Video Decoder
MPEG2 Audio Codec: ffdshow Audio Decoder

I'm trying to force MP to play the audio of WMV files using FFDSHOW filter with no success. Outside MP, it works perfectly (graphedit also shows it), but inside MP, FFDSHOW is never used for the audio. Playing other media files in MP like AVI will make use of FFDSHOW for the aduio.

EDIT: Found out that it happens only if the audio stream within the WMV file is 6 channels PCM (uncompressed).

Any idea?

Thanks,
granx

granx · 2006-09-10, 18:10

If no one has a solution, at least can anyone guide me how I can troubleshoot the rendering graph that MP is building?

I looked in the log file, but couldn't find any clue as to what codecs MP used for the WMV playback.

mPod · 2006-09-10, 19:55

To display the graph, see this post: http://forum.team-mediaportal.com/76459-post.html

prezident · 2006-09-10, 20:35

Try using ffshow for decoding uncompressed audio, can be changed in the audio codecs settings.

granx · 2006-09-10, 20:44

Quote:

Originally Posted by prezident

Try using ffshow for decoding uncompressed audio, can be changed in the audio codecs settings.

It is set like this of course. Don't forget that outside MP it works OK (FFDSHOW is used for audio)

granx · 2006-09-10, 20:56

Thanks mPod for the tip, it worked. Now for the problem.

Outside MP, I get the following graph (the good graph):
"WMAudio Decoder DMO" connected to "ffdshow Audio Decoder" which is connected to "Default Direct Sound Device"

Inside MP, I get: "WMAudio Decoder DMO" connected to "Default Direct Sound Device" and "ffdshow Audio Decoder" just seats there unattached, not connected.

Any idea why its like that?

reagan+carter · 2006-09-10, 21:14

see here

the problem seen here seems to be related and has not been resolved, yet

FlipGer · 2006-09-10, 21:41

Hi,

the mantis bug is not a (real) MP issue:
Can't get ffdshow to work in TV

Flip.

granx · 2006-09-10, 21:56

Not sure these are related to my problem. After all, if I play a 2 channel audio WMV file, ffdshow will connect correctly. It happens only with 6 channels WMV files. Also, for all other file types (AVI, MPEG) ffdshow will also connect correctly.

What I don't understand is why the graph built by MP different from the graph other players (like media player classic etc.) build.

Can I force a specific graph?

FlipGer · 2006-09-10, 22:08

Hi,

no sorry, there is no way to force a graph. As you said, its strange, that the ffdshow filter is loaded by MP but not connected properly.

Can you please try following:
- Save the graph of MP
- Exit MP
- Load the Graph in Graphedit
- Try to link the ffdshow filter in between

Also look into ffdshow audio decoder configuration, if all formats are set to use ffdshow.

Flip

2006-09-07, 23:02	#1 (permalink)
granx Portal Member Join Date: Sep 2005 Posts: 22 Thanks: 0 Thanked 0 Times in 0 Posts	WMV and FFDSHOW audio filter MediaPortal Version: 0.2.0.4 MPEG2 Video Codec: NVIDIA Video Decoder MPEG2 Audio Codec: ffdshow Audio Decoder I'm trying to force MP to play the audio of WMV files using FFDSHOW filter with no success. Outside MP, it works perfectly (graphedit also shows it), but inside MP, FFDSHOW is never used for the audio. Playing other media files in MP like AVI will make use of FFDSHOW for the aduio. EDIT: Found out that it happens only if the audio stream within the WMV file is 6 channels PCM (uncompressed). Any idea? Thanks, granx __________________ AthlonXP 2800@2500mhz 2x512 Dual DDR 3200 memory GeForce 6600 AGP, DVI, 1280x720 Last edited by granx; 2006-09-08 at 07:58.

2006-09-10, 18:10	#2 (permalink)
granx Portal Member Join Date: Sep 2005 Posts: 22 Thanks: 0 Thanked 0 Times in 0 Posts	If no one has a solution, at least can anyone guide me how I can troubleshoot the rendering graph that MP is building? I looked in the log file, but couldn't find any clue as to what codecs MP used for the WMV playback. __________________ AthlonXP 2800@2500mhz 2x512 Dual DDR 3200 memory GeForce 6600 AGP, DVI, 1280x720

2006-09-10, 19:55	#3 (permalink)
mPod Retired Team Member Join Date: Jan 2005 Location: Berlin Age: 34 Posts: 2,086 Thanks: 0 Thanked 3 Times in 3 Posts Country: My System	To display the graph, see this post: http://forum.team-mediaportal.com/76459-post.html __________________ Bad news from the stars... We cannot give any support without a properly filled support template and a full mediaportal.log pasted here. Before you ask...

2006-09-10, 20:56	#6 (permalink)
granx Portal Member Join Date: Sep 2005 Posts: 22 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks mPod for the tip, it worked. Now for the problem. Outside MP, I get the following graph (the good graph): "WMAudio Decoder DMO" connected to "ffdshow Audio Decoder" which is connected to "Default Direct Sound Device" Inside MP, I get: "WMAudio Decoder DMO" connected to "Default Direct Sound Device" and "ffdshow Audio Decoder" just seats there unattached, not connected. Any idea why its like that? __________________ AthlonXP 2800@2500mhz 2x512 Dual DDR 3200 memory GeForce 6600 AGP, DVI, 1280x720

2006-09-10, 21:14	#7 (permalink)
reagan+carter Portal Member Join Date: Sep 2006 Location: Nantes, FR Posts: 221 Thanks: 2 Thanked 1 Time in 1 Post My System	see here the problem seen here seems to be related and has not been resolved, yet __________________ kind regards, reagan+carter Top weekly artists scrobbled w\ MediaPortal:

2006-09-10, 20:35	#4 (permalink)
prezident Portal Member Join Date: Aug 2006 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts	Try using ffshow for decoding uncompressed audio, can be changed in the audio codecs settings.

2006-09-10, 21:41	#8 (permalink)
FlipGer Super Moderator Join Date: Apr 2004 Location: Leipzig, Germany Age: 33 Posts: 2,288 Thanks: 33 Thanked 56 Times in 42 Posts Country: My System	Hi, the mantis bug is not a (real) MP issue: Can't get ffdshow to work in TV Flip.

2006-09-10, 21:56	#9 (permalink)
granx Portal Member Join Date: Sep 2005 Posts: 22 Thanks: 0 Thanked 0 Times in 0 Posts	Not sure these are related to my problem. After all, if I play a 2 channel audio WMV file, ffdshow will connect correctly. It happens only with 6 channels WMV files. Also, for all other file types (AVI, MPEG) ffdshow will also connect correctly. What I don't understand is why the graph built by MP different from the graph other players (like media player classic etc.) build. Can I force a specific graph? __________________ AthlonXP 2800@2500mhz 2x512 Dual DDR 3200 memory GeForce 6600 AGP, DVI, 1280x720

2006-09-10, 22:08	#10 (permalink)
FlipGer Super Moderator Join Date: Apr 2004 Location: Leipzig, Germany Age: 33 Posts: 2,288 Thanks: 33 Thanked 56 Times in 42 Posts Country: My System	Hi, no sorry, there is no way to force a graph. As you said, its strange, that the ffdshow filter is loaded by MP but not connected properly. Can you please try following: - Save the graph of MP - Exit MP - Load the Graph in Graphedit - Try to link the ffdshow filter in between Also look into ffdshow audio decoder configuration, if all formats are set to use ffdshow. Flip

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