Main

Here's the main section.

uuid will be created automatically, you need not worry about this.
cache_dir is handy for keeping cached files out of the script directory. This is helpful for reinstalls as well as development.

[main]
# uuid =
# cache_dir =

empty

This section is regarding empty epg settings and is only used if the below [fakehdhr]epg_method is set to empty. "Empty EPG" is a basic xmltv schedule with an hour block per time of day.

epg_update_frequency This setting is in seconds.

[empty]
# epg_update_frequency =

NextPVR

The nextpvr section

What address to contact nextpvrat.
what port does nextpvruse
does nextpvruse ssl?
pin is a required credential.
weight is something that I don't recommend messing with.
epg_update_frequency This setting is in seconds.

[nextpvr]
address = localhost
port = 8866
ssl = 
pin = 
weight = 300
epg_update_frequency = 43200

fhdhr

The fhdhr contains all the configuration options for interfacing between this script and your media platform.

address and port are what we will allow the script to listen on. 0.0.0.0 is the default, and will respond to all.
discovery_address may be helpful for making SSDP work properly. If address is not 0.0.0.0, we will use that. If this is not set to a real IP, we won't run SSDP. SSDP is only really helpful for discovering in Plex/Emby. It's a wasted resource since you can manually add the ip:port of the script to Plex.
tuner_count is a limit of devices able to stream from the script. The default is 3, as per Locast's documentation. A 4th is possible, but is not reccomended.
friendlyname is to set the name that Plex sees the script as.
stream_type can be set to ffmpeg or direct. Locast seems to work better with the ffmpeg method.
epg_method defaults to proxy and will pull the xmltv data from Locast. Other Options include empty which is an hourly schedule with minimal channel information. Another option is zap2it, which is another source of EPG information. Channel Numbers may need to be manually mapped.

[fhdhr]
# address = 0.0.0.0
# port = 5004
# discovery_address = 0.0.0.0
# tuner_count =  4
# friendlyname = fHDHR-Locast
# stream_type = ffmpeg
# epg_method = proxy

zap2it

zap2it contains a ton of configuration options, and defaults to options that in my experience don't need to be adjusted.

postalcode is a value of importance, and is helpful. If not set, the script will attempt to retrieve your postalcode automatically.
epg_update_frequency determines how often we check zap2it for new scheduling information.

[zap2it]
# delay = 5
# postalcode = None
# affiliate_id = gapzap
# country = USA
# device = -
# headendid = lineupId
# isoverride = True
# languagecode = en
# pref =
# timespan = 6
# timezone =
# userid = -
# epg_update_frequency = 43200

ffmpeg

The ffmpeg section includes:

ffmpeg_path is useful if ffmpeg is not in your systems PATH, or you want to manually specify.
bytes_per_read determines how many bytes of the stream to read before sending the data to your client. Increasing this value may cause longer load times, and lowering it may effect stuttering.

[ffmpeg]
# ffmpeg_path = ffmpeg
# bytes_per_read = 1152000

direct_stream

The direct_stream section is for when you set the [fakehdhr]stream_type to direct

chunksize is how much data to read at a time.

[direct_stream]
# chunksize = 1024*1024

Dev

The dev section contains options that are changeable, but are unsupported. Use at your own discretion.

[dev]
# reporting_model = HDHR4-2DT
# reporting_firmware_name = hdhomerun4_dvbt
# reporting_firmware_ver = 20150826
# reporting_tuner_type = Antenna