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WMMPEG2VIDEOINFO structure (wmsdkidl.h)

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[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The WMMPEG2VIDEOINFO structure describes an MPEG-2 video stream.

Syntax

typedef struct tagWMMPEG2VIDEOINFO {
  WMVIDEOINFOHEADER2 hdr;
  DWORD              dwStartTimeCode;
  DWORD              cbSequenceHeader;
  DWORD              dwProfile;
  DWORD              dwLevel;
  DWORD              dwFlags;
  DWORD              dwSequenceHeader[1];
} WMMPEG2VIDEOINFO;

Members

hdr

WMVIDEOINFOHEADER2 structure giving header information.

dwStartTimeCode

25-bit group-of-pictures (GOP) time code at start of data. This field is not used for DVD.

cbSequenceHeader

Length of the sequence header, in bytes. For DVD, set this field to zero. The sequence header is given in the dwSequenceHeader field.

dwProfile

AM_MPEG2Profile enumeration type that specifies the MPEG-2 profile.

dwLevel

AM_MPEG2Level enumeration type that specifies the MPEG-2 level.

dwFlags

Flag indicating preferences. Flags are defined in Dvdmedia.h.

Set undefined bits to zero or the connection will be rejected.

dwSequenceHeader[1]

Address of a buffer that contains the sequence header, including quantization matrices and the sequence extension, if required. This field is typed as a DWORD array to preserve the 32-bit alignment.

Remarks

This structure is identical to the MPEG2VIDEOINFO structure defined in Dvdmedia.h. For more information, see the DirectShow documentation in the DirectX SDK.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only],Windows Media Format 7 SDK, or later versions of the SDK
Minimum supported server Windows 2000 Server [desktop apps only]
Header wmsdkidl.h (include Wmsdk.h)

See also

Structures