<div dir="ltr"><div><div>Hi! </div>I basically construct pipeline to interact with Ip video cams. A very simple template: rtspsrc name=source latency=100 ! rtph264depay ! mpegtsmux name=mux ! queue ! multisocketsink sync-method=1 name=sink </div>This one is used for video distribution over http in python. I experienced both of above problems on it. </div><div class="gmail_extra"> <div class="gmail_quote">2016-06-21 3:04 GMT+03:00 Olivier Crête <<a href="mailto:olivier.crete@collabora.com" target="_blank">olivier.crete@collabora.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, 2016-06-20 at 17:04 +0300, Krutskikh Ivan wrote: > I use gstreamer 1.8.X with python and gi. For convenience I use > Gst.parse-launch() for creating pipelines. But the more I use those > approach, I stumble upon issues: > > 1) Sometimes set_state(Gst.State.NULL) results in gstreamer exception > about some elements that should be manually set to NULL state. > Sometimes (like on handling EOS message) it works, sometimes it > crashes with segmentation fault with my whole multithread app =(. I > came up with a workaround for simple pipelines ( no tee's etc.): I > set src element to state_null and after that the whole pipeline. This > kind of works, but only with straight pipelines. Are you doing something else than setting the pipeline to PLAYING then back to NULL? What is your pipeline? > 2) I cannot re-use my pipeline after it was set to state NULL. That's > less of a problem: I can just re-init my pipeline from scratch. > > Are both of those issues the results of my lazy approach of using > Gst.parse-launch() instean of creating pipeline manually? And how can Normally, parse_launch() should work multiple times, unless you have pipelines with sometimes pads like demuxers or decodebin, in that case, the "auto-linking" only happens the first time and you need to re- create it. -- Olivier Crête <a href="mailto:olivier.crete@collabora.com">olivier.crete@collabora.com</a> _______________________________________________ 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>