Partager via

TIMECODE Structure

  • Article
 
Microsoft DirectShow 9.0

TIMECODE Structure

The TIMECODE structure contains basic timecode frame count information.

Syntax

typedef struct tagTIMECODE {
    WORD   wFrameRate;
    WORD   wFrameFract;
    DWORD  dwFrames;
} TIMECODE;

Members

wFrameRate

Number of frames per second. Specify with one of the following values:

Value Description
ED_FORMAT_SMPTE_30 30 frames per second.
ED_FORMAT_SMPTE_30DROP 30 frames per second drop frame (actual rate 29.97 fps).
ED_FORMAT_SMPTE_25 25 frames per second.
ED_FORMAT_SMPTE_24 24 frames per second.

wFrameFract

Fractional frame. Full scale is 0x1000.

dwFrames

Timecode value as a binary framecount.

Remarks

Fractional frame can be used to indicate temporal offset into frame when timecode was actually read from an external device; for example, wFrameFract=0x7ff means the timecode value was read from the device at the end of the first video field.

Requirements

Header: Dshow.h.

See Also