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.

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.
Note Because timecode commonly enters or leaves computer systems as ASCII values, conversion helper methods that convert the ASCII values to and from binary framecounts are supplied in the sample filter.

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.