VulkanHub
Enum

VkVideoEncodeAV1CapabilityFlagBitsKHR

AV1 encode capability flags

Bits which may be set in VkVideoEncodeAV1CapabilitiesKHR::flags, indicating the AV1 encoding capabilities supported, are:

typedef enum VkVideoEncodeAV1CapabilityFlagBitsKHR {
    VK_VIDEO_ENCODE_AV1_CAPABILITY_PER_RATE_CONTROL_GROUP_MIN_MAX_Q_INDEX_BIT_KHR = 0x00000001,
    VK_VIDEO_ENCODE_AV1_CAPABILITY_GENERATE_OBU_EXTENSION_HEADER_BIT_KHR = 0x00000002,
    VK_VIDEO_ENCODE_AV1_CAPABILITY_PRIMARY_REFERENCE_CDF_ONLY_BIT_KHR = 0x00000004,
    VK_VIDEO_ENCODE_AV1_CAPABILITY_FRAME_SIZE_OVERRIDE_BIT_KHR = 0x00000008,
    VK_VIDEO_ENCODE_AV1_CAPABILITY_MOTION_VECTOR_SCALING_BIT_KHR = 0x00000010,
} VkVideoEncodeAV1CapabilityFlagBitsKHR;
  • VK_VIDEO_ENCODE_AV1_CAPABILITY_PER_RATE_CONTROL_GROUP_MIN_MAX_Q_INDEX_BIT_KHR indicates support for specifying different quantizer index values in the members of VkVideoEncodeAV1QIndexKHR.
  • VK_VIDEO_ENCODE_AV1_CAPABILITY_GENERATE_OBU_EXTENSION_HEADER_BIT_KHR indicates support for generating OBU extension headers, as defined in section 5.3.3 of the AV1 Specification.
  • VK_VIDEO_ENCODE_AV1_CAPABILITY_PRIMARY_REFERENCE_CDF_ONLY_BIT_KHR indicates support for using the primary reference frame indicated by the value of StdVideoEncodeAV1PictureInfo::primary_ref_frame in the AV1 picture information only for CDF data reference, as defined in section 6.8.2 of the AV1 Specification.
  • VK_VIDEO_ENCODE_AV1_CAPABILITY_FRAME_SIZE_OVERRIDE_BIT_KHR indicates support for encoding a picture with a frame size different from the maximum frame size defined in the active AV1 sequence header. If this capability is not supported, then frame_size_override_flagmust not be set in the AV1 picture information of the encoded frame and the coded extent of the encode input picture must match the maximum coded extent allowed by the active AV1 sequence header, i.e. (max_frame_width_minus_1 + 1, max_frame_height_minus_1 + 1).
  • VK_VIDEO_ENCODE_AV1_CAPABILITY_MOTION_VECTOR_SCALING_BIT_KHR indicates support for motion vector scaling, as defined in section 7.11.3.3 of the AV1 Specification. If this capability is not supported, then the coded extent of all active reference pictures must match the coded extent of the encode input picture. This capability may only be supported by a video profile when VK_VIDEO_ENCODE_AV1_CAPABILITY_FRAME_SIZE_OVERRIDE_BIT_KHR is also supported.