Hi I was able to create a stacktrace after installing libav-dbg.
Christian -- Christian Hilgers ch...@familie-hilgers.com
#gdb /usr/bin/avconv core GNU gdb (GDB) 7.4.1-debian Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/bin/avconv...Reading symbols from /usr/lib/debug/.build-id/7b/fc98fafe5194a12a17b0fd3ea41157b194de62.debug...done. done. [New LWP 3632] warning: Can't read pathname for load map: Input/output error. [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `avconv -i orient.avi -c:v libx264 -pre libx264-ipod320 -s 320x240 -b:v 768k -c:'. Program terminated with signal 11, Segmentation fault. #0 0x000000000040dcca in new_output_stream (o=o@entry=0x7fff05448fe0, oc=oc@entry=0xf6fa40, type=type@entry=AVMEDIA_TYPE_AUDIO) at /build/libav-2WNWdL/libav-0.8.3/avconv.c:3485 3485 /build/libav-2WNWdL/libav-0.8.3/avconv.c: No such file or directory. (gdb) bt #0 0x000000000040dcca in new_output_stream (o=o@entry=0x7fff05448fe0, oc=oc@entry=0xf6fa40, type=type@entry=AVMEDIA_TYPE_AUDIO) at /build/libav-2WNWdL/libav-0.8.3/avconv.c:3485 #1 0x000000000040e2ce in new_audio_stream (o=o@entry=0x7fff05448fe0, oc=oc@entry=0xf6fa40) at /build/libav-2WNWdL/libav-0.8.3/avconv.c:3689 #2 0x0000000000411129 in opt_output_file (optctx=0x7fff05448fe0, filename=0x7fff0544ae83 "orient-ipod-mp4.mp4") at /build/libav-2WNWdL/libav-0.8.3/avconv.c:3882 #3 0x00000000004143c6 in parse_options (optctx=optctx@entry=0x7fff05448fe0, argc=argc@entry=14, argv=argv@entry=0x7fff05449f28, options=options@entry=0x619dc0, parse_arg_function=parse_arg_function@entry=0x40fd50 <opt_output_file>) at /build/libav-2WNWdL/libav-0.8.3/cmdutils.c:323 #4 0x00000000004054f5 in main (argc=14, argv=0x7fff05449f28) at /build/libav-2WNWdL/libav-0.8.3/avconv.c:4514 (gdb) quit #dpkg -l libav-tools libav-dbg Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Architecture Description +++-=================================-=====================-=====================-======================================================================= ii libav-dbg 6:0.8.3-7 amd64 Debug symbols for Libav related packages ii libav-tools 6:0.8.3-7 amd64 Multimedia player, server, encoder and transcoder