http://dvbstreamer.sourceforge.net/ this is another dvb streaming application; note this is not media-tv/dvbstream although similar name... - it can stream over udp, which media-tv/dvbstream can only do in cvs (udp capable version was never released - and moreover, acording to its author's notes in mplayer-dvb list - it never will be), - it also uses standard channels.conf file :-)
Added to portage tree.