VkVideoEncodeRateControlLayerInfoKHR

The VkVideoEncodeRateControlLayerInfoKHR structure is defined as:

typedef struct VkVideoEncodeRateControlLayerInfoKHR {
    VkStructureType sType;
    const void* pNext;
    uint64_t averageBitrate;
    uint64_t maxBitrate;
    uint32_t frameRateNumerator;
    uint32_t frameRateDenominator;
} VkVideoEncodeRateControlLayerInfoKHR;

• sType is a VkStructureType value identifying this structure.
• pNext is a pointer to a structure extending this structure.
• averageBitrate is the average bitrate to be targeted by the implementation’s rate control algorithm.
• maxBitrate is the peak bitrate to be targeted by the implementation’s rate control algorithm.
• frameRateNumerator is the numerator of the frame rate assumed by the implementation’s rate control algorithm.
• frameRateDenominator is the denominator of the frame rate assumed by the implementation’s rate control algorithm.

Additional structures providing codec-specific rate control parameters can be included in the pNext chain of VkVideoEncodeRateControlLayerInfoKHR depending on the video profile the bound video session was created with. For further details see:

• Video Coding Control
• H.264 Encode Rate Control
• H.265 Encode Rate Control
• AV1 Encode Rate Control