Here's two commands you could try working into your script.

mencoder -oac copy -ovc copy part1.avi part2.avi part3.avi -o complete.avi

OR

avimerge -o complete.avi -i part1.avi part2.avi part3.avi

Hope one of these helps you out, :-)

See attachment. I'm fairly new here. This is my first post on these forums. Been a Linux user of various distributions for years before finally settling on Debian.

Glad to be here and hope to contribute positively to the community!

Running Debian 6.0.1 x64
Icons: Faenza Wolfe Debian (gnome-look.org)