ffmpeg -hide_banner -v verbose -init_hw_device vulkan

init_hw_device-vulkan.txt

Supported validation layers:
 VK_LAYER_NV_optimus
 VK_LAYER_OBS_HOOK

Using instance extension VK_KHR_portability_enumeration
GPU listing:
    0: NVIDIA T400 (discrete) (0x1fb2)
Device 0 selected: NVIDIA T400 (discrete) (0x1fb2)
Queue families:
    0: graphics compute transfer sparse (queues: 16)
    1: transfer sparse (queues: 2)
    2: compute transfer sparse (queues: 8)
    3: transfer decode sparse (queues: 1)
Using device extension VK_KHR_push_descriptor
Using device extension VK_KHR_sampler_ycbcr_conversion
Using device extension VK_EXT_descriptor_buffer
Using device extension VK_EXT_shader_atomic_float
Using device extension VK_EXT_external_memory_host
Using device extension VK_KHR_external_memory_win32
Using device extension VK_KHR_external_semaphore_win32
Using device extension VK_KHR_video_queue
Using device extension VK_KHR_video_decode_queue
Using device extension VK_KHR_video_decode_h264
Using device extension VK_KHR_video_decode_h265
Using device: NVIDIA T400
Alignments:
    optimalBufferCopyRowPitchAlignment: 1
    minMemoryMapAlignment:              64
    nonCoherentAtomSize:                64
    minImportedHostPointerAlignment:    4096
Using queue family 0 (queues: 16) for graphics
Using queue family 1 (queues: 2) for transfers
Using queue family 2 (queues: 8) for compute
Using queue family 3 (queues: 1) for decode