GStreamer missing plugins on Windows

[superarce]

I have installed the latest version of gstreamer (v1.16.2) on a Windows 10
with a full installation and testing simple examples I have checked that
several common elements are missing.

With a command like:

gst-launch-1.0 videotestsrc ! capsfilter caps=video/x-raw,format=GRAY8 !
videoconvert ! autovideosink

I receive this log:

GST_INIT gst.c:810:init_post: initialized GStreamer successfully
GST_PIPELINE gstparse.c:337:gst_parse_launch_full: parsing pipeline
description 'videotestsrc ! capsfilter caps=video/x-raw,format=GRAY8 !
videoconvert ! autovideosink '
GST_ELEMENT_FACTORY gstelementfactory.c:462:gst_element_factory_make: no
such element factory "videotestsrc"!
GST_PIPELINE grammar.y:816:priv_gst_parse_yyparse: no element "videotestsrc"
GST_ELEMENT_FACTORY gstelementfactory.c:462:gst_element_factory_make: no
such element factory "capsfilter"!
GST_PIPELINE grammar.y:816:priv_gst_parse_yyparse: no element "capsfilter"
GST_PIPELINE grammar.y:901:priv_gst_parse_yyparse: link has no source
[sink=@0000000000000000]
GST_ELEMENT_FACTORY gstelementfactory.c:462:gst_element_factory_make: no
such element factory "videoconvert"!
GST_PIPELINE grammar.y:816:priv_gst_parse_yyparse: no element "videoconvert"
GST_PIPELINE grammar.y:901:priv_gst_parse_yyparse: link has no source
[sink=@0000000000000000]
GST_ELEMENT_FACTORY stelementfactory.c:462:gst_element_factory_make: no such
element factory "autovideosink"!
GST_PIPELINE grammar.y:816:priv_gst_parse_yyparse: no element
"autovideosink"
GST_PIPELINE grammar.y:901:priv_gst_parse_yyparse: link has no source
[sink=@0000000000000000]

I also have checked that the installer creates a new environment variable
*GSTREAMER_1_0_ROOT_X86_64* pointing to *C:\gstreamer\1.0\x86_64* and it
also adds the *bin* folder to the *Path*.

Does the MSI installer need any additional step to register its plugins on a
Windows Machine ?



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