Xscreensaver
From Hack Sphere Labs Wiki
movie as screen saver
pacman -Sv xscreensaver
- need to run it to make the initial config file
xscreensaver-demo
xfce should autostart it with startxfce4 if not:
Simply installing the xscreensaver package is not enough to have it run automatically. The xscreensaver program has to be started, which is commonly done by the desktop environment via a line in ~/.xinitrc as follows:
/usr/bin/xscreensaver -no-splash &
run xscreensaver whenever:
xscreensaver-command --lock