Edit

KS_MPEGVIDEOINFO2 structure (ksmedia.h)

  • Article

The KS_MPEGVIDEOINFO2 structure describes an MPEG-2 video stream, including bob or weave settings.

Syntax

typedef struct tagKS_MPEGVIDEOINFO2 {
  KS_VIDEOINFOHEADER2 hdr;
  DWORD               dwStartTimeCode;
  DWORD               cbSequenceHeader;
  DWORD               dwProfile;
  DWORD               dwLevel;
  DWORD               dwFlags;
  DWORD               bSequenceHeader[1];
} KS_MPEGVIDEOINFO2, *PKS_MPEGVIDEOINFO2;

Members

hdr

Specifies a KS_VIDEOINFOHEADER2 structure that describes the details of the video stream.

dwStartTimeCode

A 25-bit "group-of-pictures" time code at the start of data (not used for DVD).

cbSequenceHeader

The length of the bSequenceHeader member, in bytes (zero for DVD).

dwProfile

Specifies the MPEG-2 profile. This member must be one of the values from the KS_MPEG2Profile enumeration.

dwLevel

Specifies the MPEG-2 level. This member must be one of the values from the KS_MPEG2Level enumeration.

dwFlags

Specifies the flags that indicate preferences. This member can be set to one or more (logical OR) values that are defined in ksmedia.h.

Flag Meaning
KS_MPEG2_DoPanScan If set, the MPEG-2 video decoder should crop the output image based on pan-scan vectors in the picture display extension and change the picture aspect ratio accordingly.
KS_MPEG2_DVDLine21Field1 If set, the MPEG-2 decoder must be able to produce an output pin for DVD-style closed caption data found in the GOP layer of Field 1.
KS_MPEG2_DVDLine21Field2 If set, the MPEG-2 decoder must be able to produce an output pin for DVD-style closed caption data found in the GOP layer of Field 2.
KS_MPEG2_SourceIsLetterboxed If set, indicates that black bars have been encoded in the top and bottom of the video.
KS_MPEG2_FilmCameraMode If set, indicates "film mode" used for 625/50 content. If cleared, indicates that "camera mode" was used.
KS_MPEG2_LetterboxAnalogOut If set, and the stream is sent to an analog output, then the stream should be letterboxed. Streams sent to VGA should be letterboxed only by renderers.
KS_MPEG2_DSS_UserData If set, the MPEG-2 decoder must process DSS-style user data.
KS_MPEG2_DVB_UserData If set, the MPEG-2 decoder must process DVB-style user data.
KS_MPEG2_27MHzTimebase If set, the PTS and DTS timestamps advance at 27 MHz rather than 90 kHz.

bSequenceHeader[1]

The length of the bSequenceHeader member, in bytes (zero for DVD).

Requirements

Requirement Value
Header ksmedia.h (include Ksmedia.h)

See also

KS_VIDEOINFOHEADER2