Locking assertion sounds a lot like one of the multitude of libxcb issues.
Look for:
"xvidcap hangs on starting a capture session. What can I do about it?"
here:
http://xvidcap.wiki.sourceforge.net/faq#usage
Or for one of the libxcb issues, e. g. here:
https://bugs.launchpad.net/xorg-server/+bug/1
On Fri, January 30, 2009 4:05 am, browe wrote:
> xvidcap crashes with every use for me in 8.04.
> I'm using mpeg 4 - divx and no audio in preferences.
> Ran from terminal so you can see the messages. probably lasted closer to
> 50 secs this time. That was a long one.
>
> :~$ xvidcap
> /home/browe/
xvidcap crashes with every use for me in 8.04.
I'm using mpeg 4 - divx and no audio in preferences.
Ran from terminal so you can see the messages. probably lasted closer to 50
secs this time. That was a long one.
:~$ xvidcap
/home/browe/.themes/Darker theme/gtk-2.0/gtkrc:50: Clearlooks configu