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DXVAHDDDI_RATIONAL structure (d3dumddi.h)

  • Article

The DXVAHDDDI_RATIONAL structure describes a fractional value that represents the vertical and horizontal frequencies of a video mode (that is, vertical sync and horizontal sync).

Syntax

typedef struct _DXVAHDDDI_RATIONAL {
  [in] UINT Numerator;
  [in] UINT Denominator;
} DXVAHDDDI_RATIONAL;

Members

[in] Numerator

The numerator of the frequency fraction.

[in] Denominator

The denominator of the frequency fraction.

Remarks

An output rate of 0/0 is valid. The driver interprets 0/0 as 0/1. The driver interprets 0/any value as zero.

The NTSC frame rate is 30000/1001, and the PAL frame rate is 25/1.

Requirements

Requirement Value
Minimum supported client DXVAHDDDI_RATIONAL is supported beginning with the Windows 7 operating system.
Header d3dumddi.h (include D3dumddi.h)