union

typedef union VideoAudioUnion{                                                           
    struct
    {                                           
        int iWidth;
        int iHeight;
        int iFps; 
        int iBitRate;
    }video;

    struct
    {                                           
        int iAudioBitRate;
        int iSamplesPerSec;
        int iBytesPerSample;
    }audio;
}VideoAudioUnion;