Contact
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Ahmed Abdelkhalek [GitHub]aabdelkh 
Other Extension Metadata
- Last Modified Date
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2023-12-05 
- IP Status
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No known IP claims. 
- Contributors
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Ahmed Abdelkhalek, AMD 
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George Hao, AMD 
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Jake Beju, AMD 
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Chunbo Chen, Intel 
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Ping Liu, Intel 
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Srinath Kumarapuram, NVIDIA 
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Tony Zlatinski, NVIDIA 
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Ravi Chaudhary, NVIDIA 
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Daniel Rakos, RasterGrid 
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Aidan Fabius, Core Avionics & Industrial Inc. 
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Lynne Iribarren, Independent 
 
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Description
This extension builds upon the VK_KHR_video_encode_queue extension
by adding support for encoding elementary video stream sequences compliant
with the H.265/HEVC video compression standard.
| Note | This extension was promoted to  | 
New Structures
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Extending VkVideoBeginCodingInfoKHR: 
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Extending VkVideoCapabilitiesKHR: 
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Extending VkVideoCodingControlInfoKHR, VkVideoBeginCodingInfoKHR: 
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Extending VkVideoEncodeInfoKHR: 
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Extending VkVideoEncodeQualityLevelPropertiesKHR: 
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Extending VkVideoEncodeRateControlLayerInfoKHR: 
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Extending VkVideoEncodeSessionParametersGetInfoKHR: 
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Extending VkVideoProfileInfoKHR, VkQueryPoolCreateInfo: 
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Extending VkVideoReferenceSlotInfoKHR: 
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Extending VkVideoSessionCreateInfoKHR: 
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Extending VkVideoSessionParametersCreateInfoKHR: 
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Extending VkVideoSessionParametersUpdateInfoKHR: 
New Enum Constants
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VK_KHR_VIDEO_ENCODE_H265_EXTENSION_NAME
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VK_KHR_VIDEO_ENCODE_H265_SPEC_VERSION
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Extending VkStructureType: - 
VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_CAPABILITIES_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_DPB_SLOT_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_GOP_REMAINING_FRAME_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_NALU_SLICE_SEGMENT_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_PICTURE_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_PROFILE_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_QUALITY_LEVEL_PROPERTIES_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_RATE_CONTROL_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_RATE_CONTROL_LAYER_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_SESSION_CREATE_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_SESSION_PARAMETERS_ADD_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_SESSION_PARAMETERS_CREATE_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_SESSION_PARAMETERS_FEEDBACK_INFO_KHR
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VK_STRUCTURE_TYPE_VIDEO_ENCODE_H265_SESSION_PARAMETERS_GET_INFO_KHR
 
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Extending VkVideoCodecOperationFlagBitsKHR: - 
VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR
 
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Version History
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Revision 0, 2019-11-14 (Ahmed Abdelkhalek) - 
Initial draft 
 
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Revision 0.5, 2020-02-13 (Tony Zlatinski) - 
General Spec cleanup 
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Added DPB structures 
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Change the VCL frame encode structure 
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Added a common Non-VCL Picture Paramarameters structure 
 
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Revision 2, Oct 10 2021 (Srinath Kumarapuram) - 
Vulkan Video Encode h.265 update and spec edits 
 
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Revision 3, 2021-12-08 (Ahmed Abdelkhalek) - 
Rate control updates 
 
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Revision 4, 2022-01-11 (Ahmed Abdelkhalek) - 
Replace occurrences of “slice” by “slice segment” and rename structures/enums to reflect this. 
 
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Revision 5, 2022-02-10 (Ahmed Abdelkhalek) - 
Updates to encode capability interface 
 
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Revision 6, 2022-03-16 (Ahmed Abdelkhalek) - 
Relocate Std header version reporting/requesting from this extension to VK_KHR_video_queue extension. 
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Remove the now empty VkVideoEncodeH265SessionCreateInfoEXT. 
 
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Revision 7, 2022-03-24 (Ahmed Abdelkhalek) - 
Add capability flags to report support to disable transform skip and support to use B frame in L1 reference list. 
 
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Revision 8, 2022-07-18 (Daniel Rakos) - 
Replace VkVideoEncodeH265RateControlStructureFlagBitsEXTbit enum withVkVideoEncodeH265RateControlStructureEXTenum
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Rename VkVideoEncodeH265ProfileEXTtoVkVideoEncodeH265ProfileInfoEXT
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Rename VkVideoEncodeH265ReferenceListsEXTtoVkVideoEncodeH265ReferenceListsInfoEXT
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Rename VkVideoEncodeH265EmitPictureParametersEXTtoVkVideoEncodeH265EmitPictureParametersInfoEXT
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Rename VkVideoEncodeH265NaluSliceSegmentEXTtoVkVideoEncodeH265NaluSliceSegmentInfoEXT
 
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Revision 9, 2022-09-18 (Daniel Rakos) - 
Rename vpsStdCount,pVpsStd,spsStdCount,pSpsStd,ppsStdCount, andpPpsStdtostdVPSCount,pStdVPSs,stdSPSCount,pStdSPSs,stdPPSCount, andpStdPPSs, respectively, inVkVideoEncodeH265SessionParametersAddInfoEXT
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Rename maxVpsStdCount,maxSpsStdCount, andmaxPpsStdCounttomaxStdVPSCount,maxStdSPSCountandmaxStdPPSCount, respectively, inVkVideoEncodeH265SessionParametersCreateInfoEXT
 
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Revision 10, 2023-03-06 (Daniel Rakos) - 
Removed VkVideoEncodeH265EmitPictureParametersInfoEXT
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Changed member types in VkVideoEncodeH265CapabilitiesEXTandVkVideoEncodeH265ReferenceListsInfoEXTfromuint8_ttouint32_t
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Changed the type of VkVideoEncodeH265RateControlInfoEXT::subLayerCountandVkVideoEncodeH265RateControlLayerInfoEXT::temporalIdfromuint8_ttouint32_t
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Removed VkVideoEncodeH265InputModeFlagsEXTandVkVideoEncodeH265OutputModeFlagsEXTas we only support frame-in-frame-out mode for now
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Rename pCurrentPictureInfoinVkVideoEncodeH265VclFrameInfoEXTtopStdPictureInfo
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Rename pSliceSegmentHeaderStdinVkVideoEncodeH265NaluSliceSegmentInfoEXTtopStdSliceSegmentHeader
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Rename pReferenceFinalListsinVkVideoEncodeH265VclFrameInfoEXTandVkVideoEncodeH265NaluSliceSegmentInfoEXTtopStdReferenceFinalLists
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Removed the slotIndexmember ofVkVideoEncodeH265DpbSlotInfoEXTand changed it to be chained toVkVideoReferenceSlotInfoKHR
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Replaced VkVideoEncodeH265ReferenceListsInfoEXTwith the new Video Std header structureStdVideoEncodeH265ReferenceLists
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Added new capability flag VK_VIDEO_ENCODE_H265_CAPABILITY_DIFFERENT_REFERENCE_FINAL_LISTS_BIT_EXT
 
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Revision 11, 2023-05-26 (Daniel Rakos) - 
Renamed VkVideoEncodeH265VclFrameInfoEXTtoVkVideoEncodeH265PictureInfoEXT
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Removed VkVideoEncodeH265RateControlLayerInfoEXT::temporalId
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Added expectDyadicTemporalSubLayerPatterncapability
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Added the VkVideoEncodeH265SessionParametersGetInfoEXTstructure to identify the H.265 parameter sets to retrieve encoded parameter data for, and theVkVideoEncodeH265SessionParametersFeedbackInfoEXTstructure to retrieve H.265 parameter set override information when using the newvkGetEncodedVideoSessionParametersKHRcommand
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Added VkVideoEncodeH265NaluSliceSegmentInfoEXT::constantQpto specify per-slice segment constant QP when rate control mode isVK_VIDEO_ENCODE_RATE_CONTROL_MODE_DISABLED_BIT_KHR
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Added VkVideoEncodeH265QualityLevelPropertiesEXTfor retrieving H.265 specific quality level recommendations
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Replaced VkVideoEncodeH265RateControlStructureEXTenum with the flags typeVkVideoEncodeH265RateControlFlagsEXTand bits defined inVkVideoEncodeH265RateControlFlagBitsEXTand added HRD compliance flag
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Removed useInitialRcQpandinitialRcQpmembers ofVkVideoEncodeH265RateControlLayerInfoEXT
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Added prefersGopRemainingFramesandrequiresGopRemainingFrames, and the newVkVideoEncodeH265GopRemainingFrameInfoEXTstructure to allow specifying remaining frames of each type in the rate control GOP
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Renamed maxSubLayersCountcapability tomaxSubLayerCount
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Added maxQp, andminQpcapabilities
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Added maxLevelIdccapability and newVkVideoEncodeH265SessionCreateInfoEXTstructure to specify upper bounds on the H.265 level of the produced video bitstream
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Moved capability flags specific to codec syntax restrictions from VkVideoEncodeH265CapabilityFlagsEXTto the newVkVideoEncodeH265StdFlagsEXTwhich is now included as a separatestdSyntaxFlagsmember inVkVideoEncodeH265CapabilitiesEXT
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Added stdprefix to codec syntax capabilities inVkVideoEncodeH265CapabilitiesEXT
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Removed VkVideoEncodeH265NaluSliceSegmentInfoEXT::ctbCountandVK_VIDEO_ENCODE_H265_CAPABILITY_SLICE_SEGMENT_CTB_COUNT_BIT_EXT
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Replaced VK_VIDEO_ENCODE_H265_CAPABILITY_MULTIPLE_SLICE_SEGMENTS_PER_FRAME_BIT_EXTwith the newmaxSliceSegmentCountcapability
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Added maxTilescapability
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Removed codec syntax min/max capabilities from VkVideoEncodeH265CapabilitiesEXT
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Removed capability flag VK_VIDEO_ENCODE_H265_CAPABILITY_DIFFERENT_REFERENCE_FINAL_LISTS_BIT_EXTand removedpStdReferenceFinalListsmembers from theVkVideoEncodeH265PictureInfoEXTandVkVideoEncodeH265NaluSliceSegmentInfoEXTstructures as reference lists info is now included inpStdPictureInfo
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Added capability flag VK_VIDEO_ENCODE_H265_CAPABILITY_B_FRAME_IN_L0_LIST_BIT_EXT
 
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Revision 12, 2023-07-19 (Daniel Rakos) - 
Added video std capability flags VK_VIDEO_ENCODE_H265_STD_SLICE_QP_DELTA_BIT_EXTandVK_VIDEO_ENCODE_H265_STD_DIFFERENT_SLICE_QP_DELTA_BIT_EXT
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Fixed optionality of the array members of VkVideoEncodeH265SessionParametersAddInfoEXT
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Fixed optionality of VkVideoEncodeH265RateControlInfoEXT::flags
 
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Revision 13, 2023-09-04 (Daniel Rakos) - 
Change extension from EXTtoKHR
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Extension is no longer provisional 
 
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Revision 14, 2023-12-05 (Daniel Rakos) - 
Condition reference picture setup based on the value of StdVideoEncodeH265PictureInfo::flags.is_reference
 
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Document Notes
For more information, see the Vulkan Specification
This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.