AVIFileOpen and AVIERR_BADPARAM

[NewsBot]

I need help! I try to open an AVI file (it's an MPEG actually) with (Windows') AVIFileOpen in .NET 3.5 - on Vista. Each time I call the method I get as result: AVIERR_BADPARAM. I tried also to convert the video to a WMV and AVI (DV-AVI). Nothing worked. Always the same error.

 

I have read that this is because of no valid codec or that the format is not recognized. I have installed ffdshow and MovieMaker, WMP and*WMP Classic are able to play the file.

 

Anybody having an idea what I'm doing wrong?

 

The mapping to the function would be:

 

[DllImport("avifil32.dll", PreserveSig=true)]

public static extern int AVIFileOpen(

***out int ppfile,

***[MarshalAs(UnmanagedType.LPTStr)] string szFile,

***uint uMode,

***int pclsidHandler);

 

Even removing the MarshalAs doesn't help... I'm really running out of options...

 

More...

 

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