Tvheadend

Good Morning,
Already I follow your work a few years but only now proceeded to register on your site.
Currently I use the box wetek with PVR tvheadend working very well .
Now I would like to add some IPTV channels based on HLS - extension .m3u8.
I've read about it in the wiki, but I was not clear ...
I wonder if there was a possibility of ultimately for making clearer the way of functioning of the argument "pipe", on
Custom MPEGTS Input.

Example:
Direct copy (container only change)
pipe://ffmpeg -loglevel fatal -i hxxp://xxx.xxxx.xxx/xx.m3u8?ch=xxxxxxxx -acodec copy -vcodec copy -bsf h264_mp4toannexb -f mpegts pipe:1

pipe:///usr/bin/ffmpeg -loglevel fatal -i INPUTLINK -vcodec copy -acodec copy -metadata service_provider=STRING
-metadata service_name=STRING -f mpegts -tune zerolatency pipe:1

What is?

service_provider=STRING (IPTV??)
service_name=STRING (Channel 1)

And about "Cookie-protected HLS Streams", here I put this?

Thanks for the great JOB