Sharpness property of videoscale element doesn't work
Wondered that sharpness doesn't work for a simple pipelines. Gstreamer version - 1.18.4 as well as 1.14.5. Pipelines:
gst-launch-1.0 videotestsrc ! videoscale sharpness=0.5 ! autovideosink
gst-launch-1.0 videotestsrc ! videoscale sharpness=1 ! autovideosink
gst-launch-1.0 videotestsrc ! videoscale sharpness=1.5 ! autovideosink
produce the same image.