typedef struct _AVISTREAMINFOW {
    DWORD		fccType;
    DWORD               fccHandler;
    DWORD               dwFlags;        
    DWORD		dwCaps;
    WORD		wPriority;
    WORD		wLanguage;
    DWORD               dwScale;
    DWORD               dwRate; 
    DWORD               dwStart;
    DWORD               dwLength; 
    DWORD		dwInitialFrames;
    DWORD               dwSuggestedBufferSize;
    DWORD               dwQuality;
    DWORD               dwSampleSize;
    RECT                rcFrame;
    DWORD		dwEditCount;
    DWORD		dwFormatChangeCount;
    WCHAR		szName[64];
} AVISTREAMINFOW, FAR * LPAVISTREAMINFOW;