No audio from DVDs in WMP10; video okay; audio okay from other pla

[Guest]

I can play DVDs okay in WinDVD but get no audio in WMP10 or in Media Center.
It appears that all codecs are installed since I get audio from CDs in WMP.
Video files play properly in WMP but no audio from DVDs I burned in the same
drive. It may be a registration problem but I haven't been able to find a
registry entry that looks bad. Does anyone have suggestions or solutions?

 

[Cari \(MS-MVP\)]

Hmmm.... are you sure you haven't adjusted the volume level in WMP?

 

[bxf]

I can play DVDs okay in WinDVD but get no audio in WMP10 or in Media

Center. It appears that all codecs are installed since I get audio from CDs
in WMP.

CDs and DVDs do not necessarily contain the same type of audio, so
being able to play one does not imply that the CODECs for the other are
all in place.

WinDVD calls upon its own decoders, which are not necessarily defined
to Windows in a manner that makes them available to other applications
via Directshow. So, it is possible that WinDVD can play something where
other applications cannot, because there is no "public" decoder
installed on the system.

Video files play properly in WMP but no audio from DVDs I burned in the
same drive.

What type of audio do the files contain, and what audio did you put on
the disks you burnt yourself?

Download and install GSPOT, which will tell you the type of audio (and
video) present in a file. It will also tell you if the required CODECs
are present in your system (although it is not always accurate in this
information). At least it will help you determine whether or not you
have the CODECs you think you have.

 

[Guest]

Yes, I have checked all volume/mute controls so that isn't a problem. It
also is not a drive problem since WinDVD plays okay from the drive.

I ran DECCHECK last evening and selected the best codec on my machine which
was shown as compatible except for synchronization. It didn't work either.

Any more suggestions?

 

[Guest]

--
fishnrod

CDs and DVDs do not necessarily contain the same type of audio, so
being able to play one does not imply that the CODECs for the other are
all in place.

Yes, I understand this. Last evening I ran DECCHECK and selected the best
compatible codec as preferred even tho it didn't support synchronization.
Tried again with several DVDs (two by others) and no audio from any of them.

WinDVD calls upon its own decoders, which are not necessarily defined
to Windows in a manner that makes them available to other applications
via Directshow. So, it is possible that WinDVD can play something where
other applications cannot, because there is no "public" decoder
installed on the system.

What do you mean by "public" decoder?

What type of audio do the files contain, and what audio did you put on
the disks you burnt yourself?

I'm pretty sure that I burn with MPEG-2 although I haven't verified that.
That's what my burner calls for. I use PowerDirector and burn with the
EZProducer portion of the software.

Download and install GSPOT, which will tell you the type of audio (and
video) present in a file. It will also tell you if the required CODECs
are present in your system (although it is not always accurate in this
information). At least it will help you determine whether or not you
have the CODECs you think you have.

I'll look for GSPOT and try it. Thanks!

 

[bxf]

--
fishnrod



Yes, I understand this. Last evening I ran DECCHECK and selected the best
compatible codec as preferred even tho it didn't support synchronization.
Tried again with several DVDs (two by others) and no audio from any of them.

Then I'm afraid I'm stumped.

What do you mean by "public" decoder?

When an application includes a CODEC as part of the installation
process, that CODEC is defined to Windows with certain attributes, one
of which is the MERIT value, which determines whether this particular
CODEC will be used by Directshow for satisfying requests made by
applications calling for a CODEC of a certain type. A CODEC may be
installed with a MERIT value that says that this CODEC is not to be
used, meaning that an application will use it only if it makes a
specific request for that CODEC. On the other hand, some CODECs are
installed with MERIT values that will permit Directshow to use them
when an application requests a CODEC to process a given type of media.
An application (e.g. player) does not have to know which CODEC is being
used, as Directshow handles the matching the CODEC with the type of
request made by the application.

I'm pretty sure that I burn with MPEG-2 although I haven't verified that.
That's what my burner calls for. I use PowerDirector and burn with the
EZProducer portion of the software.
I'll look for GSPOT and try it. Thanks!

This is probably a good place to start.

 

[bxf]

I should mention that there are tools that enable one to change the
MERIT of an item. GSPOT is one, Zoom Player is another. Since you
already intend to give GSPOT a try, you can try to change the MERIT of
your Intervideo (WinVDV) filters. If I remember correctly, the video
filter is named "IVIVIDEO.AX" and the audio filter is "IVIAUDIO.AX". If
GSPOT shows the MERIT as 00200000 ("do-not-use") you can change it to
00600000 ("normal") and see if it helps. You can always change it back
if you so desire.