<div dir="ltr"><div><div>You are missing an exclamation point here: "tee name=t ! queue <!> matroskamux" in your post. I will assume that that was a typo when you were writing the e-mail. </div>Check the sink caps of omxh264dec and matroskamux. I don't have the omx plugins available on my setup so I can't verify this, but it is possible that the two elements expect different variants of h264. If this is the case you should use 2 h264parses after the tee to provide the correct format to both. Also, avoid using sync=0, this can cause reduced quality for your video output. You should increase the latency on the pipeline or, if youa re using gst-launch, you can try increasing the "ts-offset" parameter in ximagesink </div>Dimitrios <div><div> </div></div></div><div class="gmail_extra"> <div class="gmail_quote">On Wed, Feb 8, 2017 at 9:47 AM, Zyx <<a href="mailto:sebastian888@outlook.com" target="_blank">sebastian888@outlook.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi, I am receiving a video from udp port. I wanted to save it in a file and at the same time display it on the screen. When I do this separately it works just fine: gst-launch-1.0 -e -v udpsrc port=5000 ! application/x-rtp, payload=96 ! rtpjitterbuffer ! rtph264depay ! h264parse ! omxh264dec ! ximagesink sync=false and for recording: gst-launch-1.0 -e -v udpsrc port=5000 ! application/x-rtp, payload=96 ! rtpjitterbuffer ! rtph264depay ! h264parse ! matroskamux ! filesink sync=false location='/home/pi/recorded/test.mkv' But when I do this using one command like this: gst-launch-1.0 -e -v udpsrc port=5000 ! application/x-rtp, payload=96 ! rtpjitterbuffer ! rtph264depay ! h264parse ! tee name=t ! queue matroskamux ! filesink sync=false location='/home/pi/recorded/test.mkv' t. ! queue ! omxh264dec ! ximagesink sync=false I've got internal data flow error: Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Setting pipeline to PLAYING ... New clock: GstSystemClock /GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = "application/x-rtp\,\ payload\=\(int\)96\,\ media\=\(string\)video\,\ clock-rate\=\(int\)90000\,\ encoding-name\=\(string\)H264" /GstPipeline:pipeline0/GstRtpJitterBuffer:rtpjitterbuffer0.GstPad:src: caps = "application/x-rtp\,\ payload\=\(int\)96\,\ media\=\(string\)video\,\ clock-rate\=\(int\)90000\,\ encoding-name\=\(string\)H264" /GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:src: caps = "video/x-h264\,\ stream-format\=\(string\)byte-stream\,\ alignment\=\(string\)nal" /GstPipeline:pipeline0/GstRtpH264Depay:rtph264depay0.GstPad:sink: caps = "application/x-rtp\,\ payload\=\(int\)96\,\ media\=\(string\)video\,\ clock-rate\=\(int\)90000\,\ encoding-name\=\(string\)H264" /GstPipeline:pipeline0/GstRtpJitterBuffer:rtpjitterbuffer0.GstPad:sink: caps = "application/x-rtp\,\ payload\=\(int\)96\,\ media\=\(string\)video\,\ clock-rate\=\(int\)90000\,\ encoding-name\=\(string\)H264" ERROR: from element /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: Internal data flow error. Additional debug info: gstbasesrc.c(2933): gst_base_src_loop (): /GstPipeline:pipeline0/GstUDPSrc:udpsrc0: streaming task paused, reason not-negotiated (-4) EOS on shutdown enabled -- waiting for EOS after Error Waiting for EOS... Does anyone have an idea what is wrong? -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/Problem-with-recording-video-and-displaying-at-the-same-time-tp4681757.html" rel="noreferrer" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/Problem-with-recording-video-and-displaying-at-the-same-time-tp4681757.html</a> Sent from the GStreamer-devel mailing list archive at Nabble.com. _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">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> </div>