# VkVideoEncodeAV1RateControlFlagBitsKHR(3) Manual Page

## Name

VkVideoEncodeAV1RateControlFlagBitsKHR - AV1 encode rate control bits

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## C Specification

Bits which can be set in VkVideoEncodeAV1RateControlInfoKHR::`flags`, specifying AV1 rate control flags, are:

    // Provided by VK_KHR_video_encode_av1
    typedef enum VkVideoEncodeAV1RateControlFlagBitsKHR {
        VK_VIDEO_ENCODE_AV1_RATE_CONTROL_REGULAR_GOP_BIT_KHR = 0x00000001,
        VK_VIDEO_ENCODE_AV1_RATE_CONTROL_TEMPORAL_LAYER_PATTERN_DYADIC_BIT_KHR = 0x00000002,
        VK_VIDEO_ENCODE_AV1_RATE_CONTROL_REFERENCE_PATTERN_FLAT_BIT_KHR = 0x00000004,
        VK_VIDEO_ENCODE_AV1_RATE_CONTROL_REFERENCE_PATTERN_DYADIC_BIT_KHR = 0x00000008,
    } VkVideoEncodeAV1RateControlFlagBitsKHR;

## Description

- `VK_VIDEO_ENCODE_AV1_RATE_CONTROL_REGULAR_GOP_BIT_KHR` specifies that the application intends to use a regular GOP structure according to the parameters specified in the `gopFrameCount` and `keyFramePeriod` members of the VkVideoEncodeAV1RateControlInfoKHR structure.

- `VK_VIDEO_ENCODE_AV1_RATE_CONTROL_TEMPORAL_LAYER_PATTERN_DYADIC_BIT_KHR` specifies that the application intends to follow a dyadic temporal layer pattern.

- `VK_VIDEO_ENCODE_AV1_RATE_CONTROL_REFERENCE_PATTERN_FLAT_BIT_KHR` specifies that the application intends to follow a flat reference pattern in the GOP.

- `VK_VIDEO_ENCODE_AV1_RATE_CONTROL_REFERENCE_PATTERN_DYADIC_BIT_KHR` specifies that the application intends to follow a dyadic reference pattern in the GOP.

## See Also

VK_KHR_video_encode_av1, VkVideoEncodeAV1RateControlFlagsKHR

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0