<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div> <div>I dont't know how fast linux distributions update the gstreamer libs, but does it make sense to backport this fix to gestreamer 1.6 branch?</div> <div> <div name="quote" style="margin:10px 5px 5px 10px; padding: 10px 0 10px 10px; border-left:2px solid #C3D9E5; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"> <div style="margin:0 0 10px 0;">Gesendet: Mittwoch, 02. März 2016 um 20:50 Uhr Von: "Vivia Nikolaidou" <n.vivia@gmail.com> An: "Discussion of the development of and with GStreamer" <gstreamer-devel@lists.freedesktop.org> Betreff: Re: Segmentation fault when using mpeg2enc plugin</div> <div name="quoted-content">Hi, Thanks for reporting this crash. It is now fixed in latest git: <a href="http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=c3d6635bbff70f9c1d5314ecb6d3d38cdccfd3ee" target="_blank">http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=c3d6635bbff70f9c1d5314ecb6d3d38cdccfd3ee</a> Best regards, Vivia On 2 March 2016 at 21:37, <hammer.werfer@gmx.de> wrote: > Hi, > > i am using a pipeline to encode a video stream with the mpeg2enc plugin. The > element is created with: > > videoEnc = Gst.ElementFactory.make("mpeg2enc") > videoEnc.set_property("format", 1) > videoEnc.set_property("norm", "p") > > the crash occured at the moment a queue is linked to this element: > > queueVideo.link(videoEnc) > > i installed debugging symbols for gstreamer and some plugins. gdb gives me > the following traceback: > > (gdb) backtrace > #0 strlen () at ../sysdeps/x86_64/strlen.S:106 > #1 0x00007fc822a13323 in g_strdup () from > /lib/x86_64-linux-gnu/libglib-2.0.so.0 > #2 0x00007fc822cf3efc in ?? () from > /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 > #3 0x00007fc812b94c90 in gst_structure_set_valist_internal > (structure=<optimized out>, fieldname=<optimized out>, > varargs=0x7fc832c00750) at gststructure.c:605 > #4 0x00007fc812b96ac5 in gst_structure_new_valist (name=<optimized out>, > firstfield=0x7fc7f6828052 "format", varargs=varargs@entry=0x7fc832c00750) at > gststructure.c:284 > #5 0x00007fc812b96b64 in gst_structure_new (name=name@entry=0x7fc7f682798e > "video/x-raw", firstfield=firstfield@entry=0x7fc7f6828052 "format") at > gststructure.c:253 > #6 0x00007fc7f682464b in gst_mpeg2enc_structure_from_norm > (enc=enc@entry=0x20e77c0, horiz=352, pal_v=288, ntsc_v=240) at > gstmpeg2enc.cc:258 > #7 0x00007fc7f682588f in gst_mpeg2enc_getcaps (pad=0x7fc82800d000, > enc=0x20e77c0) at gstmpeg2enc.cc:311 > #8 gst_mpeg2enc_sink_query (pad=0x7fc82800d000, parent=0x20e77c0, > query=0x7fc828054ad0) at gstmpeg2enc.cc:360 > #9 0x00007fc812b777f8 in gst_pad_query (pad=pad@entry=0x7fc82800d000, > query=query@entry=0x7fc828054ad0) at gstpad.c:3831 > #10 0x00007fc812bac2a4 in gst_pad_query_caps (pad=pad@entry=0x7fc82800d000, > filter=filter@entry=0x0) at gstutils.c:2841 > #11 0x00007fc812bace8a in gst_element_get_compatible_pad > (element=element@entry=0x20e77c0, pad=pad@entry=0x7fc82800c4c0, > caps=caps@entry=0x0) at gstutils.c:1053 > #12 0x00007fc812badf27 in gst_element_link_pads_full (src=0x7fc828014120, > srcpadname=<optimized out>, dest=0x20e77c0, destpadname=<optimized out>, > flags=GST_PAD_LINK_CHECK_DEFAULT) at gstutils.c:1691 > #13 0x00007fc81adb4d90 in ffi_call_unix64 () from > /usr/lib/x86_64-linux-gnu/libffi.so.6 > #14 0x00007fc81adb47f8 in ffi_call () from > /usr/lib/x86_64-linux-gnu/libffi.so.6 > #15 0x00007fc8131266f4 in ?? () from > /usr/lib/python2.7/dist-packages/gi/_gi.so > #16 0x00007fc813128148 in ?? () from > /usr/lib/python2.7/dist-packages/gi/_gi.so > #17 0x00007fc81311c4ee in ?? () from > /usr/lib/python2.7/dist-packages/gi/_gi.so > #18 0x00000000004bf3cc in PyObject_Call (kw=0x0, arg=(<__main__.GstMpeg2enc > at remote 0x7fc80c512dc0>,), func=<gi.FunctionInfo at remote > 0x7fc80e00b490>) at ../Objects/abstract.c:2529 > #19 do_call (nk=<optimized out>, na=<optimized out>, > pp_stack=0x7fc832c00e10, func=<gi.FunctionInfo at remote 0x7fc80e00b490>) at > ../Python/ceval.c:4574 > #20 call_function (oparg=<optimized out>, pp_stack=0x7fc832c00e10) at > ../Python/ceval.c:4379 > #21 PyEval_EvalFrameEx () at ../Python/ceval.c:2993 > #22 0x00000000004bf10f in fast_function (nk=<optimized out>, na=<optimized > out>, n=1, pp_stack=0x7fc832c00f30, func=<function at remote > 0x7fc812a92320>) at ../Python/ceval.c:4442 > #23 call_function (oparg=<optimized out>, pp_stack=0x7fc832c00f30) at > ../Python/ceval.c:4377 > #24 PyEval_EvalFrameEx () at ../Python/ceval.c:2993 > > Same crash occurs when using format 4 (videoEnc.set_property("format", 4)) > but NO CRASH for format 0. Format 0 starts encoding but gives another error > (streaming task paused, reason not-negotiated (-4)) > but that is not related to the crash i guess. > I am using gstreamer 1.6.0-1ubuntu1. The pipeline in principle works when i > use another video/audio encoder and muxer. > > Regards, > Jens > > _______________________________________________ > gstreamer-devel mailing list > gstreamer-devel@lists.freedesktop.org > <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> > _______________________________________________ gstreamer-devel mailing list gstreamer-devel@lists.freedesktop.org <a href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a></div> </div> </div> </div></div></body></html>