# vkUpdateVideoSessionParametersKHR(3) Manual Page

## Name

vkUpdateVideoSessionParametersKHR - Update video session parameters object

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## C Specification

To update video session parameters object with new parameters, call:

    // Provided by VK_KHR_video_queue
    VkResult vkUpdateVideoSessionParametersKHR(
        VkDevice                                    device,
        VkVideoSessionParametersKHR                 videoSessionParameters,
        const VkVideoSessionParametersUpdateInfoKHR* pUpdateInfo);

## Parameters

- `device` is the logical device that updates the video session parameters.

- `videoSessionParameters` is the video session parameters object to update.

- `pUpdateInfo` is a pointer to a VkVideoSessionParametersUpdateInfoKHR structure specifying the parameter update information.

## Description

After a successful call to this command, the update sequence counter of `videoSessionParameters` is changed to the value specified in `pUpdateInfo->updateSequenceCount`.

Note | As each update issued to a video session parameters object needs to specify the next available update sequence count value, concurrent updates of the same video session parameters object are inherently disallowed. However, recording video coding operations to command buffers referring to parameters previously added to the video session parameters object is allowed, even if there is a concurrent update in progress adding some new entries to the object.

If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR` and the `pUpdateInfo->pNext` chain includes a VkVideoDecodeH264SessionParametersAddInfoKHR structure, then this command adds the following parameter entries to `videoSessionParameters`:

- The H.264 SPS entries specified in VkVideoDecodeH264SessionParametersAddInfoKHR::`pStdSPSs`.

- The H.264 PPS entries specified in VkVideoDecodeH264SessionParametersAddInfoKHR::`pStdPPSs`.

If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR` and the `pUpdateInfo->pNext` chain includes a VkVideoDecodeH265SessionParametersAddInfoKHR structure, then this command adds the following parameter entries to `videoSessionParameters`:

- The H.265 VPS entries specified in VkVideoDecodeH265SessionParametersAddInfoKHR::`pStdVPSs`.

- The H.265 SPS entries specified in VkVideoDecodeH265SessionParametersAddInfoKHR::`pStdSPSs`.

- The H.265 PPS entries specified in VkVideoDecodeH265SessionParametersAddInfoKHR::`pStdPPSs`.

If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR` and the `pUpdateInfo->pNext` chain includes a VkVideoEncodeH264SessionParametersAddInfoKHR structure, then this command adds the following parameter entries to `videoSessionParameters`:

- The H.264 SPS entries specified in VkVideoEncodeH264SessionParametersAddInfoKHR::`pStdSPSs`.

- The H.264 PPS entries specified in VkVideoEncodeH264SessionParametersAddInfoKHR::`pStdPPSs`.

If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR` and the `pUpdateInfo->pNext` chain includes a VkVideoEncodeH265SessionParametersAddInfoKHR structure, then this command adds the following parameter entries to `videoSessionParameters`:

- The H.265 VPS entries specified in VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdVPSs`.

- The H.265 SPS entries specified in VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdSPSs`.

- The H.265 PPS entries specified in VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdPPSs`.

In case of video session parameters objects created with a video encode operation, implementations may return the `VK_ERROR_INVALID_VIDEO_STD_PARAMETERS_KHR` error if any of the specified Video Std parameters do not adhere to the syntactic or semantic requirements of the used video compression standard, or if values derived from parameters according to the rules defined by the used video compression standard do not adhere to the capabilities of the video compression standard or the implementation.

Note | Applications should not rely on the `VK_ERROR_INVALID_VIDEO_STD_PARAMETERS_KHR` error being returned by any command as a means to verify Video Std parameters, as implementations are not required to report the error in any specific set of cases.

Valid Usage

- VUID-vkUpdateVideoSessionParametersKHR-pUpdateInfo-07215
  `pUpdateInfo->updateSequenceCount` must equal the current update sequence counter of `videoSessionParameters` plus one

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07216
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoDecodeH264SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH264SequenceParameterSet` entry with `seq_parameter_set_id` matching any of the elements of VkVideoDecodeH264SessionParametersAddInfoKHR::`pStdSPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07217
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR`, then the number of `StdVideoH264SequenceParameterSet` entries already stored in it plus the value of the `stdSPSCount` member of the VkVideoDecodeH264SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoDecodeH264SessionParametersCreateInfoKHR::`maxStdSPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07218
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoDecodeH264SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH264PictureParameterSet` entry with both `seq_parameter_set_id` and `pic_parameter_set_id` matching any of the elements of VkVideoDecodeH264SessionParametersAddInfoKHR::`pStdPPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07219
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR`, then the number of `StdVideoH264PictureParameterSet` entries already stored in it plus the value of the `stdPPSCount` member of the VkVideoDecodeH264SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoDecodeH264SessionParametersCreateInfoKHR::`maxStdPPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07220
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoDecodeH265SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH265VideoParameterSet` entry with `vps_video_parameter_set_id` matching any of the elements of VkVideoDecodeH265SessionParametersAddInfoKHR::`pStdVPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07221
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR`, then the number of `StdVideoH265VideoParameterSet` entries already stored in it plus the value of the `stdVPSCount` member of the VkVideoDecodeH265SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoDecodeH265SessionParametersCreateInfoKHR::`maxStdVPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07222
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoDecodeH265SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH265SequenceParameterSet` entry with both `sps_video_parameter_set_id` and `sps_seq_parameter_set_id` matching any of the elements of VkVideoDecodeH265SessionParametersAddInfoKHR::`pStdSPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07223
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR`, then the number of `StdVideoH265SequenceParameterSet` entries already stored in it plus the value of the `stdSPSCount` member of the VkVideoDecodeH265SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoDecodeH265SessionParametersCreateInfoKHR::`maxStdSPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07224
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoDecodeH265SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH265PictureParameterSet` entry with `sps_video_parameter_set_id`, `pps_seq_parameter_set_id`, and `pps_pic_parameter_set_id` all matching any of the elements of VkVideoDecodeH265SessionParametersAddInfoKHR::`pStdPPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07225
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR`, then the number of `StdVideoH265PictureParameterSet` entries already stored in it plus the value of the `stdPPSCount` member of the VkVideoDecodeH265SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoDecodeH265SessionParametersCreateInfoKHR::`maxStdPPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-09260
  `videoSessionParameters` must not have been created with the video codec operation `VK_VIDEO_CODEC_OPERATION_DECODE_AV1_BIT_KHR`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07226
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH264SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH264SequenceParameterSet` entry with `seq_parameter_set_id` matching any of the elements of VkVideoEncodeH264SessionParametersAddInfoKHR::`pStdSPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-06441
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR`, then the number of `StdVideoH264SequenceParameterSet` entries already stored in it plus the value of the `stdSPSCount` member of the VkVideoEncodeH264SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoEncodeH264SessionParametersCreateInfoKHR::`maxStdSPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07227
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH264SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH264PictureParameterSet` entry with both `seq_parameter_set_id` and `pic_parameter_set_id` matching any of the elements of VkVideoEncodeH264SessionParametersAddInfoKHR::`pStdPPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-06442
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_KHR`, then the number of `StdVideoH264PictureParameterSet` entries already stored in it plus the value of the `stdPPSCount` member of the VkVideoEncodeH264SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoEncodeH264SessionParametersCreateInfoKHR::`maxStdPPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07228
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH265SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH265VideoParameterSet` entry with `vps_video_parameter_set_id` matching any of the elements of VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdVPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-06443
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR`, then the number of `StdVideoH265VideoParameterSet` entries already stored in it plus the value of the `stdVPSCount` member of the VkVideoEncodeH265SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoEncodeH265SessionParametersCreateInfoKHR::`maxStdVPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07229
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH265SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH265SequenceParameterSet` entry with both `sps_video_parameter_set_id` and `sps_seq_parameter_set_id` matching any of the elements of VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdSPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-06444
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR`, then the number of `StdVideoH265SequenceParameterSet` entries already stored in it plus the value of the `stdSPSCount` member of the VkVideoEncodeH265SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoEncodeH265SessionParametersCreateInfoKHR::`maxStdSPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-07230
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH265SessionParametersAddInfoKHR structure, then `videoSessionParameters` must not already contain a `StdVideoH265PictureParameterSet` entry with `sps_video_parameter_set_id`, `pps_seq_parameter_set_id`, and `pps_pic_parameter_set_id` all matching any of the elements of VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdPPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-06445
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR`, then the number of `StdVideoH265PictureParameterSet` entries already stored in it plus the value of the `stdPPSCount` member of the VkVideoEncodeH265SessionParametersAddInfoKHR structure included in the `pUpdateInfo->pNext` chain must be less than or equal to the VkVideoEncodeH265SessionParametersCreateInfoKHR::`maxStdPPSCount` `videoSessionParameters` was created with

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-08321
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH265SessionParametersAddInfoKHR structure, then `num_tile_columns_minus1` must be less than VkVideoEncodeH265CapabilitiesKHR::`maxTiles.width`, as returned by vkGetPhysicalDeviceVideoCapabilitiesKHR for the video profile `videoSessionParameters` was created with, for each element of VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdPPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-08322
  If `videoSessionParameters` was created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_H265_BIT_KHR` and the `pNext` chain of `pUpdateInfo` includes a VkVideoEncodeH265SessionParametersAddInfoKHR structure, then `num_tile_rows_minus1` must be less than VkVideoEncodeH265CapabilitiesKHR::`maxTiles.height`, as returned by vkGetPhysicalDeviceVideoCapabilitiesKHR for the video profile `videoSessionParameters` was created with, for each element of VkVideoEncodeH265SessionParametersAddInfoKHR::`pStdPPSs`

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-10281
  `videoSessionParameters` must not have been created with the video codec operation `VK_VIDEO_CODEC_OPERATION_ENCODE_AV1_BIT_KHR`

Valid Usage (Implicit)

- VUID-vkUpdateVideoSessionParametersKHR-device-parameter
  `device` must be a valid VkDevice handle

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-parameter
  `videoSessionParameters` must be a valid VkVideoSessionParametersKHR handle

- VUID-vkUpdateVideoSessionParametersKHR-pUpdateInfo-parameter
  `pUpdateInfo` must be a valid pointer to a valid VkVideoSessionParametersUpdateInfoKHR structure

- VUID-vkUpdateVideoSessionParametersKHR-videoSessionParameters-parent
  `videoSessionParameters` must have been created, allocated, or retrieved from `device`

Return Codes

On success, this command returns

  - `VK_SUCCESS`

On failure, this command returns

  - `VK_ERROR_OUT_OF_HOST_MEMORY`

  - `VK_ERROR_OUT_OF_DEVICE_MEMORY`

  - `VK_ERROR_INVALID_VIDEO_STD_PARAMETERS_KHR`

## See Also

VK_KHR_video_queue, VkDevice, VkVideoSessionParametersKHR, VkVideoSessionParametersUpdateInfoKHR

## 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