<html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> Thanks for your suggestions, I have just used gdb for debugging and I am quite confident it is related to dynamically linking pads. This is the log and the info I am getting through gdb (+attached screenshot): <blockquote>DEVICE SHELL COMMAND: cat /data/local/tmp/start_lldb_server.sh | run-as com.sample.app sh -c 'cat > /data/data/com.sample.app/lldb/bin/start_lldb_server.sh; chmod 700 /data/data/com.sample.app/lldb/bin/start_lldb_server.sh' Starting LLDB server: run-as com.sample.app /data/data/com.sample.app/lldb/bin/start_lldb_server.sh /data/data/com.sample.app/lldb /data/data/com.sample.app/lldb/tmp/platform-1460975640887.sock "lldb process:gdb-remote packets" Now Launching Native Debug Session Debugger attached to process 27496 Signal: SIGSEGV (signal SIGSEGV: invalid address (fault address: 0x37ea6cf7)) </blockquote> <img alt="" src="cid:part1.04080504.06070509@gmail.com" height="467" width="1017"> In the logcat I am still having the same messages as in the first post. Is there any other possible way to pass the pointer without this reference problem? Thanks in advance Dani <div class="moz-cite-prefix">El 18/04/16 a las 09:15, Sebastian Dröge escribió: </div> <blockquote cite="mid:1460963752.21892.14.camel@centricular.com" type="cite"> <pre wrap="">On Fr, 2016-04-15 at 11:35 +0200, Dani wrote: </pre> <blockquote type="cite"> <pre wrap="">Hi everyone, I am trying to play a custom pipeline able to play mp4 files on android. So my first step has been checking that this pipeline works correctly by using gst-launch-1.0 in the terminal (ubuntu14.04): gst-launch-1.0 souphttpsrc location=<a class="moz-txt-link-freetext" href="http://192.168.0.10/videos/test.mp4">http://192.168.0.10/videos/test.mp4</a> ! qtdemux name=demux demux. ! queue ! aacparse ! faad ! autoaudiosink demux. ! queue ! h264parse ! avdec_h264 ! autovideosink My next step has been using the tutorial5 example for android project. And the modifications that I have made are the ones I show here: [...] 04-15 11:30:24.987 21178-21230/com.sample.app I/GLib+stdout: In dynamic ADDING PAD video_0 04-15 11:30:24.987 21178-21230/com.sample.app A/libc: Fatal signal 11 (SIGSEGV), code 1, fault addr 0x1 in tid 21230 (src:src) </pre> </blockquote> <pre wrap=""> Run this in a native debugger (e.g. gdb) and see where exactly it crashes and why. Judging from your code, the problem could be here: g_signal_connect (data->demux, "pad-added", G_CALLBACK (dynamic_addpad), &data); You pass a pointer to your data pointer in there, and then later use it just like a normal pointer in the callback. That's not going to work well, especially as &data is going to be an invalid reference on the stack after the function where you connect the signal has returned. </pre> <fieldset class="mimeAttachmentHeader"></fieldset> <pre wrap="">_______________________________________________ gstreamer-devel mailing list <a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </pre> </blockquote> </body> </html>