MMVIDEOOPEN

This structure contains information used on an MMIOM_CODEC_OPEN message call to a CODEC. It defines data constraint parameters to a video CODEC and is only used if the CODEC_DATA_CONSTRAINT flag is set in the ulCapsFlags field of the CODECINIFILEINFO structure. The pOtherInfo field of the CODECOPEN structure points to this structure.

typedef struct _MMVIDEOOPEN {
  ULONG     ulStructLen;           /*  Structure length. */
  ULONG     ulQuality;             /*  Video compression quality. */
  ULONG     ulKeyFrameRate;        /*  Frame rate. */
  ULONG     ulScale;               /*  Time units per frame. */
  ULONG     ulRate;                /*  Units per second. */
  ULONG     ulDataConstraint;      /*  Maximum data rate. */
  ULONG     ulConstraintInterval;  /*  Maximum frame rate. */
} MMVIDEOOPEN;

typedef   MMVIDEOOPEN   * PMMVIDEOOPEN ;