Matthias Schwarzott pointed to that problem.
http://bugs.gentoo.org/show_bug.cgi?id=128404
Description: Opened: 2006-04-01 09:59 0000
The following command consumes more and more memory; after < 1 h, 512 MB Ram
are used up and lavrec crashes. The latest version (lavtools 1.8.0) still has
this problem.