<div dir="ltr"><div>>> Also i would have build the pipeline for an single camera input and tried making it DYNAMIC first , rather than going ahead with 5 camera logic straight-forward. </div>Yes, I already did it. My C code (see the link which I have given in my 1st post) works fine for single camera. No error or No warning message at all. If you look into my C code then you will see that I am also setting my element state to NULL before unblinking. But I am still getting this error. </div><div class="gmail_extra"> <div class="gmail_quote">On Sun, Nov 22, 2015 at 10:24 PM, Ashish Kumar Mishra <<a href="mailto:ashish.kmishra@dexceldesigns.com" target="_blank">ashish.kmishra@dexceldesigns.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Janardana , [ I am also working on same , hence i could be wrong ..... Reason i am sharing this info is that by the time senior group members revert to your reply , at least you could evaluate few more test case's ] Even i am trying to have an pipeline ( with different plugins than yours ) which could be configured dynamically. Based on my trial and fail method , below info could help you:- 1) "...(lt-camera_switch_server:22356): GStreamer-WARNING **: Trying to join task 0x7f873c01def0 from its thread would deadlock.You cannot change the state of an element from its streaming thread. Use g_idle_add() or post a GstMessage on the bus to schedule the state change from the main thread...." This is an warning message which you could neglect ...Somewhere in the forum i have read , will try to find the discussion & if possible attach the link. 2) Many a place i have read that element's configuration had to be in :- Change the element's state to READY -> Change the parameters / Create-Link new instance of element's -> Change the element state to PLAYING. But with this flow logic , i could observe few scenario's where the error message's are like ".....Trying to dispose element XXX , but it is in PAUSED (locked) instead of the NULL state. You need to explicitly set elements to the NULL state before droping the final reference, to allow them to clean up..." For which i am now making the element state to NULL [ Initial was Ready] Hence , please verify the state of element before taking any corrective action ( gst_element_set_state() ) Also i would have build the pipeline for an single camera input and tried making it DYNAMIC first , rather than going ahead with 5 camera logic straight-forward. 3) There is an error for THREAD joining in log. Since even i am trying to have an dynamic pipeline , i would be monitoring your thread to correct my mistake. Thanks , Ashish Kumar Mishra. -- View this message in context: <a href="http://gstreamer-devel.966125.n4.nabble.com/How-do-i-switch-between-multiple-rtsp-video-streams-without-stopping-pipeline-gapless-streaming-tp4674601p4674602.html" rel="noreferrer" target="_blank">http://gstreamer-devel.966125.n4.nabble.com/How-do-i-switch-between-multiple-rtsp-video-streams-without-stopping-pipeline-gapless-streaming-tp4674601p4674602.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="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </blockquote></div> </div>