Rtsp-server-record-watch

Hello.

I am looking at the example: gst-rtsp-server/examples/test-record.c at master · GStreamer/gst-rtsp-server · GitHub - with launch: decodebin name=depay0 ! autovideosink
When I run:

gst-launch-1.0 videotestsrc ! x264enc ! rtspclientsink location=rtsp://127.0.0.1:8554/test

…it works fine and the application displays a window with a test video.

But:

gst-launch-1.0 rtspsrc location=rtsp://127.0.0.1:8554/test ! decodebin ! videoconvert ! autovideosink

…does not work.
It returns an error:

ERROR: from element /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0: Could not get/set settings from/on resource.
Progress: (open) Opening Stream
Additional debug info:
…/gst/rtsp/gstrtspsrc.c(8240): gst_rtspsrc_retrieve_sdp (): /GstPipeline:pipeline0/GstRTSPSrc:rtspsrc0:
Server can not provide an SDP.
Pipeline is PREROLLED …
Prerolled, waiting for progress to finish…
Progress: (connect) Connecting to rtsp://127.0.0.1:8554/test
ERROR: pipeline doesn’t want to preroll.
Progress: (open) Retrieving server options
Setting pipeline to NULL …
Freeing pipeline …

Please, tell me, how to change test-record.c for get video from rtsp-server.