<html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hello, I have a problem of connection between rtpbin and rtph264depay (maybe the problem is elsewhere). Here is my pipelines, which executes correctly with gst-launch... Talker machine : gst-launch-1.0 rtpbin name=rtpbin filesrc location=video.mp4 ! qtdemux name=d d.audio_0 ! aacparse ! rtpmp4apay mtu=524 ! rtpbin.send_rtp_sink_1 d.video_0 ! decodebin ! x264enc ! rtph264pay ! rtpbin.send_rtp_sink_0 rtpbin.send_rtp_src_1 ! udpsink port=5004 host=$IP sync=false async=false rtpbin.send_rtcp_src_1 ! udpsink port=5005 host=$IP sync=false async=false udpsrc port=5007 ! rtpbin.recv_rtcp_sink_1 rtpbin.send_rtp_src_0 ! udpsink port=5000 host=$IP sync=true async=false rtpbin.send_rtcp_src_0 ! udpsink port=5001 host=$IP sync=false async=false udpsrc port=5003 ! rtpbin.recv_rtcp_sink_0 Listener machine: gst-launch-1.0 rtpbin name=rtpbin udpsrc caps=$VCAPS port=5000 ! rtpbin.recv_rtp_sink_0 rtpbin.recv_rtp_src_0 ! rtph264depay ! decodebin ! videoconvert ! autovideosink udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0 rtpbin.send_rtcp_src_0 ! udpsink port=5003 host=$IP sync=false async=false udpsrc caps=$ACAPS port=5004 ! rtpbin.recv_rtp_sink_1 rtpbin.send_rtp_src_1 ! rtpmp4adepay ! avdec_aac ! audioconvert ! alsasink udpsrc port=5005 ! rtpbin.recv_rtcp_sink_1 rtpbin.send_rtcp_src_1 ! udpsink port=5007 host=$IP sync=false async=false ...but not in an application. The problem is on listener side: rtph264depay refuse to link to recv_rtp_src_0 of rtpbin, instead it try to link with recv_rtp_src_1, which is not correct, because that is an "audio pad (consequently, the error code -4 is returned, meaning "pads do not have common format". Naturally, there is no problem for rtpmp4adepay. And, if I connect first rtpmp4adepay, it normally uses the pad recv_rtp_src_0, but rtph264depay want to use the same pad (why?), and then the error code -2 is returned, meaning "pad was already linked". To make the links, I use the signal "pad-added" with g_signal_connect, and in the callback, I use gst_element_link to make the link. I have no problem with other links... g_signal_connect(recv_rtpbin, "pad-added", G_CALLBACK(psa_listener_pad_cb), depay_video); g_signal_connect(recv_rtpbin, "pad-added", G_CALLBACK(psa_listener_pad_cb), depay_audio); As recv_rtp_src_1 is a audio pad, then incompatible with rtph264depay, how to force linking of rtph264depay to a specific pad (here recv_rtp_src_0) for this plugin? Else have you an idea of the problem? Thanks, Philippe <div class="moz-signature"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <div class="moz-signature"> <div class="moz-signature"> <div class="moz-signature"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title></title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </div> </div> </div> </div> </body> </html>