Structures.txt

AVI Structures:
MainAVIHeader:
DWORD dwMicroSecPerFrame;    //  The period between video frames
DWORD dwMaxBytesPerSec;      //  Maximum data rate of the file
DWORD dwReserved1;           // 0
DWORD dwFlags;               //  0x10 AVIF_HASINDEX: The AVI file has an idx1 chunk containing an index at the end of the file.
DWORD dwTotalFrames;         // Field of the main header specifies the total number of frames of data in file.
DWORD dwInitialFrames;       // Is used for interleaved files
DWORD dwStreams;             // Specifies the number of streams in the file.
DWORD dwSuggestedBufferSize; // Field specifies the suggested buffer size forreading the file
DWORD dwWidth;               // Fields specify the width of the AVIfile in pixels.
DWORD dwHeight;              // Fields specify the height of the AVIfile in pixels.
DWORD dwReserved[4];         // 0, 0, 0, 0

AVIStreamHeader:
FOURCC fccType;              // 'vids', 'auds', 'txts'...
FOURCC fccHandler;           // "cvid", "DIB "
DWORD dwFlags;               // 0
DWORD dwPriority;            // 0
DWORD dwInitialFrames;       // 0
DWORD dwScale;               // 1
DWORD dwRate;                // Fps (dwRate - frame rate for video streams)
DWORD dwStart;               // 0
DWORD dwLength;              // Frames number (playing time of AVI file as defined by scale and rate)
DWORD dwSuggestedBufferSize; // For reading the stream
DWORD dwQuality;             // -1 (encoding quality. If set to -1, drivers use the default quality value)
DWORD dwSampleSize;          // 0 means that each frame is in its own chunk
RECT rcFrame;                // If stream has a different size than dwWidth*dwHeight(unused)

BITMAPINFOHEADER
DWORD biSize;                // Write header size of BITMAPINFO header structure
LONG  biWidth;               // width in pixels
LONG  biHeight;              // heigth in pixels
WORD  biPlanes;              // Number of color planes in which the data is stored
WORD  biBitCount;            // Number of bits per pixel
DWORD biCompression;         // Type of compression used (uncompressed: NO_COMPRESSION=0)
DWORD biSizeImage;           // Image Buffer. Quicktime needs 3 bytes also for 8-bit png 
                                (biCompression==NO_COMPRESSION)?0:xDim*yDim*bytesPerPixel;
LONG  biXPelsPerMeter;       // Horizontal resolution in pixels per meter
LONG  biYPelsPerMeter;       // Vertical resolution in pixels per meter
DWORD biClrUsed;             // 256 (color table size; for 8-bit only)
DWORD biClrImportant;        // Specifies that the first x colors of the color table. Are important to the DIB.