1. M3U playlist in format (take a look at below):
#EXTM3U
#EXTINF:-1 tvg-id="id1" tvg-name="Channel_1" tvg-logo="logo1" group-name="Group 1",Channel 1
http://STREAMURL
#EXTINF:-1 tvg-id="id2" tvg-name="Channel_2" tvg-logo="logo2" group-title="Group 2",Channel 2
#EXTINF:-1 ,Channel 3
#EXTGRP:Group 3
udp://STREAMURL
...
2. XSPF with VLC extensions: