DxText and DxScan can't handle ASF/WMV files

Thanks, Snarfle.
Here is the VB code I ended up with.
Maybe it should be added to the samples.
I have added some comments.
Please correct them if they are wrong.

' Get the SampleGrabber interface
sampGrabber = TryCast(New SampleGrabber(), ISampleGrabber)

' Add the video source
hr = m_FilterGraph.AddSourceFilter(FileName, "Ds.NET FileFilter", capFilter)
DsError.ThrowExceptionForHR(hr)

'Find the video stream with IMediaDet
Dim md As DES.IMediaDet
' Number of video and audio streams
Dim Streams As Integer = Nothing
' The stream number we are looking for
Dim VidStream As Integer = Nothing
' The video pin
Dim iPinOutSource As IPin = Nothing
' The major type (vido)
Dim Type As System.Guid = Nothing

md = CType(New DES.MediaDet, IMediaDet)
md.put_Filename(FileName)
md.get_OutputStreams(Streams)
' Walk through the streams and find the video stream
For i As Integer = 0 To Streams - 1
' Put the stream number
md.put_CurrentStream(i)
' Get the major type
md.get_StreamType(Type)
If Type = MediaType.Video Then
' Found the video stream
VidStream = i
Exit For
End If
Next

' Find the video pin
iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, VidStream)

I finally found at least one way to make WMV files work.
Read the comment for an explanation.
Here is a VB solution:

' Hopefully this will be the video pin
Dim iPinOutSource As IPin = DsFindPin.ByDirection(capFilter, PinDirection.Output, 0)

' Hope isn't good enough. AVI/MPEG files have ONE pin called "Output"
' The ASF/WMW video pin is called "Raw Video 1". Audio is called "Raw Audio 0"
' Get the name, and try again if the name points to ASF/WMV.
' If the name is "Raw Video 1", everything is fine. It's the right pin.
' If the name is "Raw Audio 0" pin 1 would probably be better.
Dim inf As PinInfo = Nothing
iPinOutSource.QueryPinInfo(inf)
If inf.name = "Raw Audio 0" Then
iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, 1)
End If

The same thing in C#:

IPin iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, 0);

PinInfo inf = null;
iPinOutSource.QueryPinInfo(out inf);
if (inf.name == "Raw Audio 0")
{
iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, 1);
}

This seems to work. I have tried several AVI, MPEG and WMV files.
But is this solution foolproof?

Is there a better or more elegant way to do this?

Peter

I think I found a better way.
I have tried it with wmv, avi and mpg files.

Dim md As DES.IMediaDet
Dim st As String = Nothing
Dim streams As Integer = Nothing
Dim VidStream As Integer = Nothing
Dim iPinOutSource As IPin = Nothing
Const VideoGUID As String = "{73646976-0000-0010-8000-00AA00389B71}"

md = CType(New DES.MediaDet, IMediaDet)
md.put_Filename(FileName)
md.get_OutputStreams(streams)

For i As Integer = 0 To streams - 1
md.put_CurrentStream(i)
md.get_StreamTypeB(st)
If st = VideoGUID Then
VidStream = i
Exit For
End If
Next

iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, VidStream)

Peter

And the same code in C#:

DirectShowLib.DES.IMediaDet md = null;
string st = null;
int streams = 0;
int VidStream = 0;
IPin iPinOutSource = null;
const string VideoGUID = "{73646976-0000-0010-8000-00AA00389B71}";

md = (IMediaDet)(new DirectShowLib.DES.MediaDet());
md.put_Filename(FileName);
md.get_OutputStreams(out streams);

for (int i = 0; i < streams; i++)
{
md.put_CurrentStream(i);
md.get_StreamTypeB(out st);
if (st == VideoGUID)
{
VidStream = i;
break;
}
}

iPinOutSource = DsFindPin.ByDirection(capFilter, PinDirection.Output, VidStream);

Peter