http://kodi.wiki/view/Tvheadend

https://tvheadend.org/projects/tvheadend/wiki/AptRepository

apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 379CE192D401AB61
echo "deb http://dl.bintray.com/tvheadend/deb jessie release" >/etc/apt/sources.list.d/tvheadend.list
 
apt-get update
apt-get install tvheadend

http://localhost:9981