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VMRVideoDesc 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]

This topic applies to Windows XP Service Pack 1 or later.

The VMRVideoDesc structure describes a video stream to be deinterlaced.

Syntax

typedef struct _VMRVideoDesc {
  DWORD        dwSize;
  DWORD        dwSampleWidth;
  DWORD        dwSampleHeight;
  BOOL         SingleFieldPerSample;
  DWORD        dwFourCC;
  VMRFrequency InputSampleFreq;
  VMRFrequency OutputFrameFreq;
} VMRVideoDesc;

Members

dwSize

Size of the structure, in bytes.

dwSampleWidth

Width of the video to be deinterlaced, in pixels.

dwSampleHeight

Height of the video to be deinterlaced, in pixels.

SingleFieldPerSample

Specifies one of the following values.

Value Meaning
TRUE
 Each field is delivered as a separate sample.
FALSE
 Pairs of fields are combined into single samples.

dwFourCC

Specifies a FOURCC code. Valid values include NV12, YV12, YUY2, UYVY, IMC1, IMC2, IMC3 and IMC4

InputSampleFreq

A [VMRFrequency](/windows/win32/api/strmif/ns-strmif-vmrfrequency structure that specifies the input frequency. For NTSC TV, the frequency would be expressed as 30,000:1001.

OutputFrameFreq

A VMRFrequency structure that specifies the output frequency. For NTSC TV, the frequency would be expressed as 60,000:1001.

Requirements

Requirement Value
Header strmif.h (include Dshow.h)

See also

DirectShow Structures