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DXVA2_VideoTransferMatrix enumeration (dxva2api.h)

Describes the conversion matrices between Y'PbPr (component video) and studio R'G'B'. These flags are used in the DXVA2_ExtendedFormat structure.

Syntax

typedef enum _DXVA2_VideoTransferMatrix {
 DXVA2_VideoTransferMatrixMask = 0x7,
 DXVA2_VideoTransferMatrix_Unknown = 0,
 DXVA2_VideoTransferMatrix_BT709 = 1,
 DXVA2_VideoTransferMatrix_BT601 = 2,
 DXVA2_VideoTransferMatrix_SMPTE240M = 3
} DXVA2_VideoTransferMatrix;

Constants

 
DXVA2_VideoTransferMatrixMask
Value: 0x7
Bitmask to validate flag values. This value is not a valid flag.
DXVA2_VideoTransferMatrix_Unknown
Value: 0
Unknown. For standard-definition content, treat as DXVA2_VideoTransferMatrix_BT601. For high-definition content, treat as DXVA2_VideoTransferMatrix_BT709. (High-definition content is defined for this purpose as anything with a source height greater than 576 lines.)
DXVA2_VideoTransferMatrix_BT709
Value: 1
ITU-R BT.709 transfer matrix.
DXVA2_VideoTransferMatrix_BT601
Value: 2
ITU-R BT.601 transfer matrix. Also used for SMPTE 170 and ITU-R BT.470-2 System B,G.
DXVA2_VideoTransferMatrix_SMPTE240M
Value: 3
SMPTE 240M transfer matrix.

Remarks

The transfer matrices are defined as follows.

BT.709 transfer matrices:

Y' 0.212600 0.715200 0.072200 R' 
Pb = -0.114572 -0.385428 0.500000 x G' 
Pr 0.500000 -0.454153 -0.045847 B' 

R' 1.000000 0.000000 1.574800 Y' 
G' = 1.000000 -0.187324 -0.468124 x Pb 
B' 1.000000 1.855600 0.000000 Pr

BT.601 transfer matrices:

Y' 0.299000 0.587000 0.114000 R' 
Pb = -0.168736 -0.331264 0.500000 x G' 
Pr 0.500000 -0.418688 -0.081312 B' 

R' 1.000000 0.000000 1.402000 Y' 
G' = 1.000000 -0.344136 -0.714136 x Pb 
B' 1.000000 1.772000 0.000000 Pr

SMPTE 240M (SMPTE RP 145) transfer matrices:

Y' 0.212000 0.701000 0.087000 R' 
Pb = -0.116000 -0.384000 0.500000 x G' 
Pr 0.500000 -0.445000 -0.055000 B' 

R' 1.000000 -0.000000 1.576000 Y' 
G' = 1.000000 -0.227000 -0.477000 x Pb 
B' 1.000000 1.826000 0.000000 Pr

This enumeration is equivalent to the DXVA_VideoTransferMatrix enumeration used in DXVA 1.0.

If you are using the IMFMediaType interface to describe the video format, the video transfer matrix is specified in the MF_MT_YUV_MATRIX attribute.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Header dxva2api.h

See also

Extended Color Information

Media Foundation Enumerations

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