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NS:d3d12umddi.D3D12DDI_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC_0082_0 |
display |
D3D12DDI_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC_0082_0 |
02/16/2022 |
Windows |
Learn more about the D3D12DDI_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC_0082_0 structure. |
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structure |
d3d12umddi.h |
Windows 11 (WDDM 3.0) |
D3D12DDI_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC_0082_0 |
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The D3D12DDI_VIDEO_ENCODER_SEQUENCE_GOP_STRUCTURE_HEVC_0082_0 structure represents the group of pictures (GOP) structure for HEVC video encoding.
The distance between I-frames in the sequence, or the number of pictures in a GOP. If set to 0, only the first frame will be an I frame (infinite GOP).
The period for P-frames to be inserted within the GOP. If GOPLength is set to 0 for infinite GOP, PPicturePeriod must be greater than zero. An example usage follows:
Let A = GOPLength and B = PPictureInterval:
A=0; B=1 => IPPPPPPPP... A=0; B=2 => IBPBPBPBP... A=0; B=3 => IBBPBBPBB... A=1; B=0 => IIIIIIIII... A=2; B=1 => IPIPIPIPI... A=3; B=1 => IPPIPPIPP... A=3; B=2 => IBPIBPIBP... A=4; B=3 => IBBPIBBPIBBP...
Specifies the value of a variable MaxPicOrderCntLsb that is used in the decoding process for picture order count as specified in clause 8.2.1 of the specification as follows: MaxPicOrderCntLsb = 2^(log2_max_pic_order_cnt_lsb_minus4 + 4). The value of log2_max_pic_order_cnt_lsb_minus4 must be in the range of 0 to 12, inclusive.
See D3D12 video encoding for general information.