D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_0080_2 structure (d3d12umddi.h)

The D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_0080_2 structure specifies the rate control configuration.

Syntax

typedef struct D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_0080_2 {
  D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_MODE_0080                   Mode;
  D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_FLAGS_0080                  Flags;
  D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_CONFIGURATION_PARAMS_0080_2 ConfigParams;
  DXGI_RATIONAL                                                   TargetFrameRate;
} D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_0080_2;

Members

Mode

A D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_MODE_0080 value that specifies the rate control mode.

Flags

A D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_FLAGS_0080 value that specifies the flags for rate control.

ConfigParams

A D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_CONFIGURATION_PARAMS_0080_2 structure whose members point to specific configuration structures based on Mode. For absolute quantization parameter (QP) matrix mode, the configuration arguments are provided on a per EncodeFrame basis.

If Mode is D3D12DDI_VIDEO_ENCODER_RATE_CONTROL_MODE_0080_ABSOLUTE_QP_MAP, the QP values in pRateControlQPMap are used as absolute QP values.

For the other rate control modes, the QP values in pRateControlQPMap are interpreted as a delta QP map to be used for the current frame encode operation. The values provided in the map are incremented/decremented on top of the QP values decided by the rate control algorithm or the baseline QP constant set in CQP mode.

TargetFrameRate

A DXGI_RATIONAL structure that indicates the target frame rate for the encoded stream. This value is a hint for the rate control budgeting algorithm.

Remarks

See D3D12 video encoding for general information.

Requirements

Requirement	Value
Minimum supported client	Windows 11 (WDDM 3.0)
Header	d3d12umddi.h

See also

D3D12DDI_VIDEO_ENCODER_SEQUENCE_CONTROL_DESC_0082_0

PFND3D12DDI_VIDEO_ENCODE_FRAME_0082_0