What happens on startup is that ffmpeg.c initializes the filter, then frees it without feeding a single frame through. With no input frame, the filter lacks a hardware device. The rest of the uninit code checks if Vulkan objects exist, which they must if there's a hardware device, but vk->DeviceWaitIdle does not require an object. So, add a check for it.
48 KiB
48 KiB