C Specification
Bits which may be set in
VkVideoEncodeH265CapabilitiesEXT::flags
indicating the supported
H.265 encoding capabilities, are:
// Provided by VK_EXT_video_encode_h265
typedef enum VkVideoEncodeH265CapabilityFlagBitsEXT {
VK_VIDEO_ENCODE_H265_CAPABILITY_HRD_COMPLIANCE_BIT_EXT = 0x00000001,
VK_VIDEO_ENCODE_H265_CAPABILITY_PREDICTION_WEIGHT_TABLE_GENERATED_BIT_EXT = 0x00000002,
VK_VIDEO_ENCODE_H265_CAPABILITY_ROW_UNALIGNED_SLICE_SEGMENT_BIT_EXT = 0x00000004,
VK_VIDEO_ENCODE_H265_CAPABILITY_DIFFERENT_SLICE_SEGMENT_TYPE_BIT_EXT = 0x00000008,
VK_VIDEO_ENCODE_H265_CAPABILITY_B_FRAME_IN_L0_LIST_BIT_EXT = 0x00000010,
VK_VIDEO_ENCODE_H265_CAPABILITY_B_FRAME_IN_L1_LIST_BIT_EXT = 0x00000020,
VK_VIDEO_ENCODE_H265_CAPABILITY_PER_PICTURE_TYPE_MIN_MAX_QP_BIT_EXT = 0x00000040,
VK_VIDEO_ENCODE_H265_CAPABILITY_PER_SLICE_SEGMENT_CONSTANT_QP_BIT_EXT = 0x00000080,
VK_VIDEO_ENCODE_H265_CAPABILITY_MULTIPLE_TILES_PER_SLICE_SEGMENT_BIT_EXT = 0x00000100,
VK_VIDEO_ENCODE_H265_CAPABILITY_MULTIPLE_SLICE_SEGMENTS_PER_TILE_BIT_EXT = 0x00000200,
} VkVideoEncodeH265CapabilityFlagBitsEXT;
Description
-
VK_VIDEO_ENCODE_H265_CAPABILITY_HRD_COMPLIANCE_BIT_EXT
indicates if the implementation guarantees generating a HRD compliant bitstream ifnal_hrd_parameters_present_flag
,vcl_hrd_parameters_present_flag
, orsub_pic_hrd_params_present_flag
are enabled inStdVideoH265HrdFlags
, orvui_hrd_parameters_present_flag
is enabled inStdVideoH265SpsVuiFlags
. -
VK_VIDEO_ENCODE_H265_CAPABILITY_PREDICTION_WEIGHT_TABLE_GENERATED_BIT_EXT
indicates that whenweighted_pred_flag
orweighted_bipred_flag
inStdVideoH265PpsFlags
are enabled, the implementation is able to internally decide syntax forpred_weight_table
. -
VK_VIDEO_ENCODE_H265_CAPABILITY_ROW_UNALIGNED_SLICE_SEGMENT_BIT_EXT
indicates that each slice segment in a frame with a single or multiple tiles per slice may begin or finish at any offset in a CTB row. If not supported, all slice segments in such a frame must begin at the start of a CTB row (and hence each slice segment must finish at the end of a CTB row). Also indicates that each slice segment in a frame with multiple slices per tile may begin or finish at any offset within the enclosing tile’s CTB row. If not supported, slice segments in such a frame must begin at the start of the enclosing tile’s CTB row (and hence each slice segment must finish at the end of the enclosing tile’s CTB row). -
VK_VIDEO_ENCODE_H265_CAPABILITY_DIFFERENT_SLICE_SEGMENT_TYPE_BIT_EXT
indicates that when a frame is encoded with multiple slice segments, the implementation allows encoding each slice segment with a differentStdVideoEncodeH265SliceSegmentHeader
::slice_type
. If not supported, all slice segments of the frame must be encoded with the sameslice_type
which corresponds to the picture type of the frame. For example, all slice segments of a P-frame would be encoded as P-slices. -
VK_VIDEO_ENCODE_H265_CAPABILITY_B_FRAME_IN_L0_LIST_BIT_EXT
indicates support for using a B frame as L0 reference. -
VK_VIDEO_ENCODE_H265_CAPABILITY_B_FRAME_IN_L1_LIST_BIT_EXT
indicates support for using a B frame as L1 reference. -
VK_VIDEO_ENCODE_H265_CAPABILITY_PER_PICTURE_TYPE_MIN_MAX_QP_BIT_EXT
indicates support for specifying different QP values in the members of VkVideoEncodeH265QpEXT. -
VK_VIDEO_ENCODE_H265_CAPABILITY_PER_SLICE_SEGMENT_CONSTANT_QP_BIT_EXT
indicates support for specifying different constant QP values for each slice segment. -
VK_VIDEO_ENCODE_H265_CAPABILITY_MULTIPLE_TILES_PER_SLICE_SEGMENT_BIT_EXT
indicates if encoding multiple tiles per slice segment is supported. If not set, the implementation is only able to encode a single tile for each slice segment. -
VK_VIDEO_ENCODE_H265_CAPABILITY_MULTIPLE_SLICE_SEGMENTS_PER_TILE_BIT_EXT
indicates if encoding multiple slice segments per tile is supported. If not set, the implementation is only able to encode a single slice segment for each tile.
Document Notes
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.