VkVideoEncodeAV1StdFlagBitsKHR(3)

# VkVideoEncodeAV1StdFlagBitsKHR(3) Manual Page

## Name

VkVideoEncodeAV1StdFlagBitsKHR - Video encode AV1 syntax capability flags

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## C Specification

Bits which may be set in VkVideoEncodeAV1CapabilitiesKHR::`stdSyntaxFlags`, indicating the capabilities related to the AV1 syntax elements, are:

    // Provided by VK_KHR_video_encode_av1
    typedef enum VkVideoEncodeAV1StdFlagBitsKHR {
        VK_VIDEO_ENCODE_AV1_STD_UNIFORM_TILE_SPACING_FLAG_SET_BIT_KHR = 0x00000001,
        VK_VIDEO_ENCODE_AV1_STD_SKIP_MODE_PRESENT_UNSET_BIT_KHR = 0x00000002,
        VK_VIDEO_ENCODE_AV1_STD_PRIMARY_REF_FRAME_BIT_KHR = 0x00000004,
        VK_VIDEO_ENCODE_AV1_STD_DELTA_Q_BIT_KHR = 0x00000008,
    } VkVideoEncodeAV1StdFlagBitsKHR;

## Description

- VK_VIDEO_ENCODE_AV1_STD_UNIFORM_TILE_SPACING_FLAG_SET_BIT_KHR specifies whether the implementation supports using the application-provided value for `StdVideoAV1TileInfoFlags`::`uniform_tile_spacing_flag` in the AV1 tile parameters when that value is `1`, regardless of the coded extent of the encode input picture and the number of tile columns and rows requested in the `TileCols` and `TileRows` members of `StdVideoAV1TileInfo`.

- VK_VIDEO_ENCODE_AV1_STD_SKIP_MODE_PRESENT_UNSET_BIT_KHR specifies whether the implementation supports using the application-provided value for `StdVideoEncodeAV1PictureInfoFlags`::`skip_mode_present` when that value is `0`.

- VK_VIDEO_ENCODE_AV1_STD_PRIMARY_REF_FRAME_BIT_KHR specifies whether the implementation supports using the application-provided value for `StdVideoEncodeAV1PictureInfo`::`primary_ref_frame`.

- VK_VIDEO_ENCODE_AV1_STD_DELTA_Q_BIT_KHR specifies whether the implementation supports using the application-provided values for the `DeltaQYDc`, `DeltaQUDc`, `DeltaQUAc`, `DeltaQVDc`, and `DeltaQVAc` members of `StdVideoAV1Quantization`.

These capability flags provide information to the application about specific AV1 syntax element values that the implementation supports without having to override them and do not otherwise restrict the values that the application can specify for any of the mentioned AV1 syntax elements.

## See Also

VK_KHR_video_encode_av1, VkVideoEncodeAV1StdFlagsKHR

## 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.

## Copyright

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0