Tvheadend

hi,
i am using vdr 1.7.21 with iptv plugin
and its working perfect

i want to try tvheadend. i tried many times but never succeeded. i heard that its stable with xbmc-pvr.

my iptv provider provides multicast udp streams.
such as
ip 224.10.2.1 port 5000
ip 224.10.2.2 port 5000

i created entries for channels according to above information. but channels not displayed.

but i can play in vlc as udp://@224.10.2.1:5000
i can also play m3u file with channels list in xbmc

but for tvheadend it never worked.

please help

regards
ashok manker