Firefox crashes with h264 videos due to gstreamer

[hva]

Using Firefox with gstreamer support enabled causes a segfault in a gstreamer library, disabling gstreamer support in about:config solves the problem.

this is the message of a debug session:

Program received signal SIGFPE, Arithmetic exception.
[Switching to Thread 0x7fffadec1700 (LWP 7795)]
0x00007fffb66d7a02 in ?? ()
   from /usr/lib/x86_64-linux-gnu/gstreamer-0.10/libgstflump3dec.so

Ubuntu 13.10 fresh install
Firefox 26.0+build2-0ubuntu0.13.10.2

[hva (francesco-hermanitosverdes)]

uninstalling gstreamer0.10-fluendo-mp3 solves the problem as well, and mp4 support with gstreamer works

[penalvch (penalvch)]

hva, thank you for reporting this and helping make Ubuntu better. However, your crash report is missing. Please follow these instructions to have apport report a new bug about your crash that can be dealt with by the automatic retracer. First, execute at a terminal:
cd /var/crash && sudo rm * ; sudo apt-get update && sudo apt-get -y upgrade && sudo apt-get -y install firefox-dbg gstreamer0.10-plugins-ugly-dbg gstreamer0.10-plugins-bad-multiverse-dbg gstreamer0.10-ffmpeg-dbg gstreamer0.10-plugins-bad-dbg gstreamer0.10-plugins-good-dbg gstreamer0.10-plugins-base-dbg gstreamer0.10-libav-dbg && sudo service apport start force_start=1

If you are running the Ubuntu Stable Release you might need to enable apport in /etc/default/apport and restart.

Now reproduce the crash, then open your file manager, navigate to your /var/crash directory and open the crash report you wish to submit.
If this fails you will have to open a terminal and file your report with 'ubuntu-bug /var/crash/_my_crash_report.crash' where _my_crash_report.crash is the crash you would like to report. If you get an error that you aren't allowed to access this report you will have to file it with 'sudo ubuntu-bug /var/crash/_my_crash_report.crash'. If you run the command against the crash report and a window pops up asking you to report this, but then never opens a new report, you would be affected by https://bugs.launchpad.net/ubuntu/+source/apport/+bug/994921 . In order to WORKAROUND this, one would need to open the following file via a command line:
gksudo gedit /etc/apport/crashdb.conf

and comment out the line:
'problem_types': ['Bug', 'Package'],

by changing it to:
# 'problem_types': ['Bug', 'Package'],

Save, close, and try to file the crash report again via:
ubuntu-bug /var/crash/_my_crash_report.crash

Please follow https://wiki.ubuntu.com/MozillaTeam/Bugs when you file this crash report so the necessary information is provided.

I'm closing this bug report since the process outlined above will automatically open a new bug report which can then dealt with more efficiently.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs