<div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif">I'm running on Ubuntu, gstreamer 1.16.1 ...</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">I was trying to send the test video source, over rtp, to a videosink. It seems that I have to start the receiving end before the sending end.</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif"># transmitter:</div><div class="gmail_default" style="font-family:georgia,serif">gst-launch-1.0 -v videotestsrc \</div><div class="gmail_default" style="font-family:georgia,serif">  ! video/x-raw, width=640, height=480 \</div><div class="gmail_default" style="font-family:georgia,serif">  ! vaapih265enc \</div><div class="gmail_default" style="font-family:georgia,serif">  ! rtph265pay config-interval=-1 \</div><div class="gmail_default" style="font-family:georgia,serif">  ! ufdpsink host=127.0.0.1</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">#receiver</div><div class="gmail_default" style="font-family:georgia,serif">gst-launch-1.0 -v udpsrc \</div><div class="gmail_default" style="font-family:georgia,serif">  ! application/x-rtp, encoding-name=H265, payload=96 \</div><div class="gmail_default" style="font-family:georgia,serif">  ! rtph265depay \</div><div class="gmail_default" style="font-family:georgia,serif">  ! vaapih265dec \</div><div class="gmail_default" style="font-family:georgia,serif">  ! queue \</div><div class="gmail_default" style="font-family:georgia,serif">  ! vaapisink</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">When I tried the same pipeline with H.264, I got the same behavior until i added "config-interval=1" ... but the H.265 test case doesn't seem to work unless I start the receiver first.</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">Any suggestions?</div><div class="gmail_default" style="font-family:georgia,serif">Thanks</div></div>