It is for using GPU video related ASICs (same as VAAPI let's say). If you want to use shaders for some video filters, scaling and such - you don't need those ex

It is for using GPU video related ASICs (same as VAAPI let's say). If you want to use shaders for some video filters, scaling and such - you don't need those extensions. mpv for example can use Vulkan for both at the same time.