I am following the GStreamer basic tutorials. Good plugins installed. Tutorial 2 (which includes building a pipeline in C with autovideosink) works fine - so autovideosink element is obviously present - where it should be. However - Tutorial 10 (GStreamer Tools) where I'm trying to use autovideosink from a command line does not work. (This is an Ubuntu 16.04 environment)
# any attempt to use autovideosink says no element
$ gst-inspect-1.0 autovideosink
No such element or plugin 'autovideosink'
# good plugins installed
$ dpkg -l | grep gstreamer1.0-plugins-good:amd64
ii gstreamer1.0-plugins-good:amd64 1.8.3-1ubuntu0.4 amd64 GStreamer plugins from the "good" set
# shared object file is present
$ locate libgstautodetect.so /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstautodetect.so
/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstautodetect.so
Searching Stackoverflow and other places, I see people asked the same question but the question went unanswered.