static extern int AVIFileCreateStream(IntPtr pfile, out IntPtr ppavi, ref AVISTREAMINFO psi);

Declare Function AVIFileCreateStream Lib "avifil32.dll" Alias "AVIFileCreateStreamA" (ByVal pfile As IntPtr, ByRef ppavi As IntPtr, ByRef psi As AVISTREAMINFO) As Integer

[DllImport("avifil32.dll", EntryPoint="AVIStreamInfo")]

static extern int AVIGetStreamInfo(IntPtr pavi, out AVISTREAMINFO psi, int lSize);

public struct AVISTREAMINFO

Structure AVISTREAMINFO