C Specification

An instance of VkVideoEncodeH264SessionCreateInfoEXT structure must be chained to VkVideoSessionCreateInfoKHR when the function vkCreateVideoSessionKHR is called with videoCodecOperation in VkVideoSessionCreateInfoKHR set to VK_VIDEO_CODEC_OPERATION_ENCODE_H264_BIT_EXT.

The VkVideoEncodeH264SessionCreateInfoEXT structure is defined as:

// Provided by VK_EXT_video_encode_h264
typedef struct VkVideoEncodeH264SessionCreateInfoEXT {
    VkStructureType                    sType;
    const void*                        pNext;
    VkVideoEncodeH264CreateFlagsEXT    flags;
    VkExtent2D                         maxPictureSizeInMbs;
    const VkExtensionProperties*       pStdExtensionVersion;
} VkVideoEncodeH264SessionCreateInfoEXT;


  • sType is the type of this structure.

  • pNext is NULL or a pointer to a structure extending this structure.

  • flags is H.264 encoder creation flags.

  • maxPictureSizeInMbs specifies the syntax element pic_width_in_mbs_minus1 + 1 and the syntax element pic_height_in_map_units_minus1 + 1.

  • pStdExtensionVersion is the specific H.264 codec extensions defined in StdVideoH264Extensions.


Valid Usage (Implicit)
  • VUID-VkVideoEncodeH264SessionCreateInfoEXT-sType-sType

  • VUID-VkVideoEncodeH264SessionCreateInfoEXT-flags-parameter
    flags must be a valid combination of VkVideoEncodeH264CreateFlagBitsEXT values

  • VUID-VkVideoEncodeH264SessionCreateInfoEXT-flags-requiredbitmask
    flags must not be 0

  • VUID-VkVideoEncodeH264SessionCreateInfoEXT-pStdExtensionVersion-parameter
    pStdExtensionVersion must be a valid pointer to a valid VkExtensionProperties structure

See Also

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 2014-2021 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0