These ebuilds come from http://gentoo.zugaina.org/.
If you have some problems, go to the official site first.
linuxtv-dvb-apps : A set of tools for DVB ( http://www.linuxtv.org/ )
xdtv : TV viewer with support for AVI recording and plugins ( http://xawdecode.sourceforge.net/ )
xmltv-cvs : Set of utilities to manage TV listings stored in the XMLTV format. ( http://membled.com/work/apps/xmltv/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org