<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;"> <div> Hi, I have an issue in sending RTP to linphone. When I play the following pipeline : gst-launch-1.0 -v filesrc location=C:/ test.mp4 ! qtdemux ! avdec_h264 ! x264enc bitrate=192 ! rtph264pay ! udpsink host=127.0.0.1 port=9078 everything is ok and the video played in linphone screen. But what I want to do is to save first the video streams into a file then send this file to the linphone. What I did is the following: Saving into a file: gst-launch-1.0 -v filesrc location=C:/ test.mp4 ! qtdemux ! avdec_h264 ! x264enc bitrate=192 ! filesink location=C: /videosample Send to linphone: gst-launch-1.0 -v filesrc location=C: /videosample ! h264parse ! rtph264pay ! udpsink host=127.0.0.1 port=9078 the packets received but the linphone played a black screen. I want to know what I am missing in my pipelines or if there is a specific parameter to set. Note that it is working when a play a gst receiver : gst-launch-1.0 -v udpsrc port=9078 caps = "application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264, payload=(int)96" ! rtph264depay ! avdec_h264 ! autovideosink Kind Regards, Mohammad Shoujaa </div> </div> </body> </html>