$ gst-launch rtspsrc location=rtsp://10.99.8.107/sample_100kbit.mp4 ! rtpmp4gdepay ! decodebin ! sdlvideosink                                              
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /pipeline0/rtspsrc0/udpsrc0: Internal data flow error.
Additional debug info:
gstbasesrc.c(1614): gst_base_src_loop (): /pipeline0/rtspsrc0/udpsrc0:
streaming task paused, reason not-linked (-1)
Execution ended after 815000 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
FREEING pipeline ...