<html> <head> <style></style> </head> <body class='hmmessage'> According to Aurelien's suggestion---> "Block your tee sink pad, link/unlink your preview branch, unblock." This mean you should do "video source-->block-->tee" and not a "tee-->block-->preview bin/stream bin" > Date: Tue, 13 Oct 2009 11:23:01 -0700 > From: shiping.li@gmail.com > To: gstreamer-devel@lists.sourceforge.net > Subject: Re: [gst-devel] Any ways to add/remove branches to/from a running pipeline > > > Thanks Aurelien for your suggestion, and many thanks to all the answers > posted here. I really appreciated. This makes me feel I am not alone, > there are still many experts out there willing to provide help. :-) > > I tried the method, and here are the results: > > First let me put my pipeline here: > > video source -> tee -> record bin > -> preview bin > -> stream bin > > I tried to add preview bin when recode bin was running, first I blocked the > tee->src to preview bin, BUT it stopped the whole pipeline, including record > bin. I tried several times, but could not figure out why, and no error > messages printed out when I set debug level to 3. > > Then I tried adding preview bin directly to running pipeline, it worked > unexpectedly. I do not know why it worked, it should not according the > documents you pointed. Removing preview bin from running pipeline was also > working. > > Then when I tried to add stream bin, it became more difficult. I tried many > methods - blocking, unblocking, directly adding to running pipeline, etc. > None of them worked, and the most problems were like this: > > <udpsink0> warning: Internal data flow problem. > WARN basesink gstbasesink.c:3279:gst_base_sink_chain_unlocked:<udpsink0> > warning: Received buffer without a new-segment. Assuming timestamps start > from 0. > INFO GST_ERROR_SYSTEM > gstelement.c:1763:gst_element_message_full:<udpsink0> posting message: > Internal data flow problem. > INFO GST_ERROR_SYSTEM > gstelement.c:1786:gst_element_message_full:<udpsink0> posted warning > message: Internal data flow problem. > > So I am technically stuck here for a couple of days now. > > Could you guys please shad a light on me? > > Many thanks > > Shiping > > > Aurelien Grimaud (elzz) wrote: > > > > Le 07/10/2009 23:14, Shiping a écrit : > >> Hi, there: > >> > >> I am trying to record live video, so a pipeline is setup to record video > >> continuously. > >> > >> And during this process, I would like to preview the video from source. > >> So > >> I add a tee to the recording pipeline and branch out for previewing. > >> When > >> preview stopped, the branch was removed from the pipeline. > >> > >> I tried hard not to pause recording pipeline, but got all kinds of errors > >> and unstable recording. Currently all I can do is pause recording, > >> inset/remove branch, and restart the whole pipeline. > >> > >> Of cause, I lost some frames in above process. > >> > >> My question is: Is there a way to do it without pausing the recording? > >> > >> Any suggestions? > >> > >> Thanks > >> > >> Shiping > >> > > Hi, > > > > You should read > > http://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/design/part-block.txt > > Dynamically changing a PLAYING pipeline should be done with pad block to > > prevent any error. > > Block your tee sink pad, link/unlink your preview branch, unblock. > > > > Aurelien > > > > ------------------------------------------------------------------------------ > > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > > is the only developer event you need to attend this year. Jumpstart your > > developing skills, take BlackBerry mobile applications to market and stay > > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > > http://p.sf.net/sfu/devconference > > _______________________________________________ > > gstreamer-devel mailing list > > gstreamer-devel@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel > > > > > > -- > View this message in context: http://www.nabble.com/Any-ways-to-add-remove-branches-to-from-a-running-pipeline-tp25794577p25878111.html > Sent from the GStreamer-devel mailing list archive at Nabble.com. > > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart your > developing skills, take BlackBerry mobile applications to market and stay > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > http://p.sf.net/sfu/devconference > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel <hr />Windows Live: Κρατήστε τους φίλους σας ενήμερους <a href='http://www.microsoft.com/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:el-gr:SI_SB_1:092009' target='_new'>για τις δραστηριότητές σας στο Internet.</a></body> </html>