
FFmpeg developer Lynne who has been responsible for most of the Vulkan Video work to this open-source multimedia project was the one to also come up with this AV1 Vulkan encoder support.

Thos patch posted to the FFmpeg development list this week adds the Vulakn AV1 encoder support to libavcodec using the Vulkan Video native acceleration API with the VK_KHR_video_encode_av1 extension.
Hopefully this 1.5k lines of new code will soon be merged to FFmpeg Git.