<div dir="ltr">I use:<div> </div><div>gst-launch-1.0 filesrc location=out.pcap ! pcapparse dst-port=24384 caps="application/x-rtp,media=(string)video, clock-rate=(int)90000, encoding-name=(string)VP8-DRAFT-IETF-01, payload=(int)96" ! rtpvp8depay ! webmmux ! filesink location=out.webm <div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div> </div><div>><></div><div>Nathan Stratton</div><div>Founder, CTO</div><div>Vocinity, Inc. </div></div></div></div></div></div></div></div> </div></div> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 4, 2021 at 6:58 AM Жаров Александр Николаевич via gstreamer-devel <<a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> <div lang="en-RU" style="overflow-wrap: break-word;"> <div class="gmail-m_-6615231938299017390WordSection1"> Hi all, I am using GStreamer to create a video file from a pcap dump file that contains RTP traffic of SIP calls (2 or 2+ legs). For example, “call123-media.pcap” with 2 legs contains only SIP call media (OPUS + VP8 RTP packets). Pcap captured on one server. Every leg has 1 audio + 2 video (videoIN + videoOUT) streams. Streams start and end at the same time (after trimming the pcap file). I am using the following pipeline for converting: gst-launch-1.0 videomixer name=m background=1 \ sink_0::xpos=0 sink_0::ypos=0 sink_0::width=640 sink_0::height=480 \ sink_1::xpos=640 sink_1::ypos=0 sink_1::width=640 sink_1::height=480 ! queue ! x264enc tune=zerolatency pass=17 bitrate=768 ! queue \ ! mp4mux name=avMux faststart=true ! queue ! filesink location=call123-media.mp4 \ rtpbin name=rtpbin \ filesrc location=call123-media.pcap ! queue ! tee name=pcapTee \ pcapTee. ! queue ! pcapparse src-port=16242 ! application/x-rtp,media=audio,clock-rate=48000,encoding-name=OPUS ! rtpbin. \ pcapTee. ! queue ! pcapparse src-port=17234 ! application/x-rtp,media=audio,clock-rate=48000,encoding-name=OPUS ! rtpbin. \ pcapTee. ! queue ! pcapparse src-port=16268 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=VP8 ! rtpbin. \ pcapTee. ! queue ! pcapparse src-port=17254 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=VP8 ! rtpbin. \ \ rtpbin. ! rtpjitterbuffer ! rtpopusdepay ! opusdec ! audioconvert ! avenc_aac ! avMux.audio_0 \ rtpbin. ! rtpjitterbuffer ! rtpopusdepay ! opusdec ! audioconvert ! avenc_aac ! avMux.audio_1 \ rtpbin. ! rtpjitterbuffer ! rtpvp8depay ! vp8dec ! videoscale ! video/x-raw,width=640,height=480 ! m. \ rtpbin. ! rtpjitterbuffer ! rtpvp8depay ! vp8dec ! videoscale ! video/x-raw,width=640,height=480 ! m. As a result, I get two video streams, where the first is not started simultaneously with the second. I am getting following results: <ol style="margin-top:0cm" start="1" type="1"> <li class="gmail-m_-6615231938299017390MsoListParagraph" style="margin-left:0cm">the first stream starts 5 seconds after the start of the second (5 seconds of black screen)</li><li class="gmail-m_-6615231938299017390MsoListParagraph" style="margin-left:0cm">the second stream ends 5 seconds after the end of the first </li><li class="gmail-m_-6615231938299017390MsoListParagraph" style="margin-left:0cm">video streams are not synchronous</li></ol> What wrong with my pipeline? How can I fix that? I tried adding queues but it didn't help. <div> <div> -- Thanks in advance, Alexander </div> </div> </div> </div> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org" target="_blank">gstreamer-devel@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div>