sqlite3_blob *ppBlob;
    rc = sqlite3_blob_open( ppDb, "main", "videos", "videodata",  1  + j,  0  /*read only*/, &ppBlob );
 
    if( rc == SQLITE_OK )
    {
 
        int length      = sqlite3_blob_bytes( ppBlob );
        BYTE* videodata = (BYTE*)malloc( length );
 
        rc          = sqlite3_blob_read( ppBlob, videodata, length,  0  );
 
        char mSql[ MAX_PATH ] = {  0  };
        sprintf_s( mSql, "./res/%s.unk", videoname );
        HANDLE hFile = CreateFileA( mSql, GENERIC_READ|GENERIC_WRITE,  0 , NULL, CREATE_NEW,  0 , NULL );
 
        if(INVALID_HANDLE_VALUE != hFile )
        {
            DWORD mNumberOfBytesWritten =  0 ;                    
 
            ::WriteFile( hFile, videodata, length, &mNumberOfBytesWritten, NULL );
 
            ::CloseHandle( hFile );
        }
 
        free( videodata );
        sqlite3_blob_close( ppBlob );
    }