C Specification

The following bits can be specified in VkVideoEncodeUsageInfoKHR::videoUsageHints as a hint about the video encode use case:

// Provided by VK_KHR_video_encode_queue
typedef enum VkVideoEncodeUsageFlagBitsKHR {
    VK_VIDEO_ENCODE_USAGE_DEFAULT_KHR = 0,
    VK_VIDEO_ENCODE_USAGE_TRANSCODING_BIT_KHR = 0x00000001,
    VK_VIDEO_ENCODE_USAGE_STREAMING_BIT_KHR = 0x00000002,
    VK_VIDEO_ENCODE_USAGE_RECORDING_BIT_KHR = 0x00000004,
    VK_VIDEO_ENCODE_USAGE_CONFERENCING_BIT_KHR = 0x00000008,
} VkVideoEncodeUsageFlagBitsKHR;

Description

  • VK_VIDEO_ENCODE_USAGE_TRANSCODING_BIT_KHR specifies that video encoding is intended to be used in conjunction with video decoding to transcode a video bitstream with the same and/or different codecs.

  • VK_VIDEO_ENCODE_USAGE_STREAMING_BIT_KHR specifies that video encoding is intended to be used to produce a video bitstream that is expected to be sent as a continuous flow over network.

  • VK_VIDEO_ENCODE_USAGE_RECORDING_BIT_KHR specifies that video encoding is intended to be used for real-time recording for offline consumption.

  • VK_VIDEO_ENCODE_USAGE_CONFERENCING_BIT_KHR specifies that video encoding is intended to be used in a video conferencing scenario.

Note

There are no restrictions on the combination of bits that can be specified by the application. However, applications should use reasonable combinations in order for the implementation to be able to select the most appropriate mode of operation for the particular use case.

See Also

VK_KHR_video_encode_queue, VkVideoEncodeUsageFlagsKHR

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