This guide uses a MeCool KI PRO running LibreELEC 8.2, but it is applicable to any other LibreELEC box.
See here for a guide to installing LibreELEC on KI PRO: http://www.futeko.com/newforum/index.php?topic=2472.0
You need DVB hardware with drivers installed for LibreELEC. The internal DVB tuner in KI PRO has LibreELEC 8.2 drivers pre-installed so it is ready to go.
KI PRO: http://www.futeko.com/products/MP080.php
The best TV/PVR software for LibreELEC is TVheadend. Setup requires the installation of the TVheadend server and client add-ons then configuration from a PC/Mac via a web interface. It's a little complicated in places but not difficult.
Your LibreELEC box needs to be connected to the internet and have Samba sharing turned on.
1. Install TVheadend add-onsFrom main Kodi menu:
Add-ons - Install from repository - LibreELEC Add-ons - Services - Tvheadend Server 4.2 - Install
Then:
Add-ons - Install from repository - LibreELEC Add-ons - PVR clients - Tvheadend HTSP Client - Install
No configuration on the LibreELEC box is required.
2. Configure TVheadend from a PC/MacFind the IP address of your LibreELEC box. From main Kodi menu:
Settings - System information
On a PC/Mac using a web browser visit IP:9981 (e.g. 192.168.0.1:9981)
The first screen allows you to select interface and EPG language.
Select relevant languages and select Save & Next.
The next screen sets up security for internet access to the TVheadend server. All fields here can be left blank for zero security, but we recommend at least setting an admin user/password for the web interface.
Enter your info and select Save & Next.
If you do set an admin user/password you must enter it in the Tvheadend HTSP Client settings on the LibreELEC box.
Add-ons - Install from repository - LibreELEC Add-ons - PVR clients - Tvheadend HTSP Client - Configure - Connection settings.
The next screen chooses which of the LibreELEC box tuners you want to configure. For KI PRO the choices are IPTV, DVB-T (digital terrestrial), DVB-C (digital cable), ATSC-C (ATSC digital cable), DVB-S (digital satellite).
Make your choice based on the type of signal you have connected to the LibreELEC box. In the screen shot below I have chosen DVB-T for UK digital terrestrial TV. Select Save & Next when you're finished.
Now select the mux relevant to your location. This means choose the source of the signal coming into the LibreELEC box. I have chosen UK:Winter Hill because that's the TV transmitter local to me. For satellite there is more info here: http://www.wetekforums.com/v/discussion/474/video-how-to-install-tvheadend-and-scan-dvb-s-s2-channels
The next screen will show scan progress. It should find lots of channels. When it's finished select Save & Next.
Select 'Map all services' then Save & Next.
You are now finished!
3. View channels on LibreELEC box.From Kodi main menu visit the TV menu item. The channels you've just configured should be listed ready to go.