[Bug 76524] libpng segfault when thumbnailing movie

[Sitsofe Wheeler]

Public bug reported:

(Split off from Bug #45007 )

Description of the problem:
The totem thumbnailer wil sometimes segfault while thumbnailing a particular movie file.

Steps to reproduce:
1. Make a directory and copy http://www.shynola.com/movies/j_s/moveyourfeet.mov inside.
2. Start a gnome-terminal and cd to that directory.
3. Run
while true; do if [[ `ls core* 2> /dev/null` != "" ]]; then echo -e "\acore detected"; fi; sleep 2; done
4. Press Ctrl-Shift N. In the new window run
while true; do gnome-video-thumbnailer -s 128 moveyourfeet.mov o; done
5. Press Ctrl-Shift N. In the new window run
while true; do killall gnome-video-thumbnailer; sleep 5; done;

Every now and then the gnome-video-thumbnailer window should say
Terminated but every now and then it will say "Segmentation fault".

Additional Information:
Crash report is here:
http://librarian.launchpad.net/5446455/_usr_bin_totem-video-thumbnailer.1000.crash

** Affects: gst-plugins-good0.10 (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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libpng segfault when thumbnailing movie
https://launchpad.net/bugs/76524