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TIMECODE_SAMPLE structure (strmif.h)

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The TIMECODE_SAMPLE structure contains complete timecode information.

Syntax

typedef struct tagTIMECODE_SAMPLE {
  LONGLONG qwTick;
  TIMECODE timecode;
  DWORD    dwUser;
  DWORD    dwFlags;
} TIMECODE_SAMPLE;

Members

qwTick

Reference time, in 100-nanosecond units.

timecode

TIMECODE structure.

dwUser

Packed SMPTE userbits.

dwFlags

Timecode flag masks. Specify one or more of the following values.

Value Meaning
AM_TIMECODE_FLAG_FCM
 Frame code mode; 0 = nondrop; 1 = drop.
AM_TIMECODE_FLAG_CF
 Color frame flag.
AM_TIMECODE_FLAG_FIELD
 Field flag.
AM_TIMECODE_FLAG_DF
 Drop frame flag (from flags in actual timecode on external media).
AM_TIMECODE_COLORFRAME
 Specifies frame in color sequence.
AM_TIMECODE_COLORSEQUENCE
 Duration in frames of complete sequence.
AM_TIMECODE_FILMSEQUENCE_TYPE
 One of the FILM_SEQUENCE_XXX defines.
ED_DEVCAP_TIMECODE_READ
 Read SMPTE timecode; applies to DV camcorders.
ED_DEVCAP_ATN_READ
 Read the absolute track number (ATN); applies to DV camcorders. This constant is defined in the header file Xprtdefs.h.
ED_DEVCAP_RTC_READ
 Read the relative time counter (RTC); applies to MPEG camcorders. This constant is defined in the header file Xprtdefs.h.

Remarks

The upper 16 bits in dwFlags are reserved; set to zero.

Requirements

Requirement Value
Header strmif.h

See also

DirectShow Structures

IAMTimecodeReader::GetTimecode