dvb step channel

Marco <[email protected]> Thu, 18 Feb 2010 15:20:00 +0100
Newsgroups gmane.comp.video.mplayer.user.dvb
Message-ID <[email protected]>
Hello,

is there a command for the input.conf file to step dvb channels (next 
and previous) or how can I use the PAGEUP and PAGEDOWN keys to step 
channels?

Marco