NRSC5, FM and HLS to Icecast MP3

cast_hdradio.sh

# Send a HDRadio program (Hybrid Digital) to icecast for listening across network on audio apps and standalone internet radios without HDRadio tuners onboard
# https://github.com/theori-io/nrsc5
# sudo apt install icecast2

nrsc5 -q -d 0 107.5 0 -o - | ffmpeg -re -i pipe:0 -codec:a libmp3lame -b:a 192k -f mp3 -content_type audio/mpeg icecast://source:[email protected]:3345/hdradio

cast_hls.sh

# Streams a HLS station from vlc for listening on older equipment that can't tune to HLS or can't decode FLAC or other codecs
# sudo apt install vlc

cvlc https://the-hls-radio-stream/hls_listen --prefetch-buffer-size=8000 --sout-mux-caching=8000 --sout '#transcode{acodec=vorb,ab=320}:standard{access=http,mux=ogg,dst=192.168.1.10:3372/cdradio.ogg}'

cast_rtl.sh

# Streams a FM station to icecast for listening across network in audio apps, or listening on internet radios that doesn't have FM tuners
# sudo apt install rtl-sdr icecast2

rtl_fm -f 90.3M -M wfm -s 180k -E deemp | sox -traw -r180k -es -b16 -c1 -V1 - -t flac - | ffmpeg -re -i pipe:0 -codec:a libmp3lame -b:a 192k -f mp3 -content_type audio/mpeg icecast://source:[email protected]:3345/fmradio

cast_youtube.sh

# Take a youtube live stream at very low video quality and send audio to icecast
# sudo apt install yt-dlp icecast2

yt-dlp -f 91 https://www.youtube.com/watch?v=jfKfPfyJRdk -o - | ffmpeg -re -i pipe:0 -vn -codec:a libmp3lame -b:a 192k -f mp3 -content_type audio/mpeg icecast://source:[email protected]:3345/ytradio

etc-icecast2-icecast.xml

<icecast>
    <!-- location and admin are two arbitrary strings that are e.g. visible
         on the server info page of the icecast web interface
         (server_version.xsl). -->
    <location>Earth</location>
    <admin>icemaster@localhost</admin>

    <!-- IMPORTANT!
         Especially for inexperienced users:
         Start out by ONLY changing all passwords and restarting Icecast.
         For detailed setup instructions please refer to the documentation.
         It's also available here: http://icecast.org/docs/
    -->

    <limits>
        <clients>100</clients>
        <sources>2</sources>
        <queue-size>524288</queue-size>
        <client-timeout>30</client-timeout>
        <header-timeout>15</header-timeout>
        <source-timeout>10</source-timeout>
        <burst-on-connect>1</burst-on-connect>
        <!-- same as burst-on-connect, but this allows for being more
             specific on how much to burst. Most people won't need to
             change from the default 64k. Applies to all mountpoints  -->
        <burst-size>65535</burst-size>
    </limits>

    <authentication>
        <!-- Sources log in with username 'source' -->
        <source-password>rdo</source-password>
        <!-- Relays log in with username 'relay' -->
        <relay-password>supersecurerelaypassword</relay-password>

        <!-- Admin logs in with the username given below -->
        <admin-user>admin</admin-user>
        <admin-password>supersecureadminpassword</admin-password>
    </authentication>
    <hostname>localhost</hostname>
    <listen-socket>
        <port>3345</port>
    </listen-socket>
    <http-headers>
        <header name="Access-Control-Allow-Origin" value="*" />
    </http-headers>

    <fileserve>1</fileserve>

    <paths>
        <basedir>/usr/share/icecast2</basedir>

        <logdir>/var/log/icecast2</logdir>
        <webroot>/usr/share/icecast2/web</webroot>
        <adminroot>/usr/share/icecast2/admin</adminroot>

        <alias source="/" destination="/status.xsl"/>
    </paths>

    <logging>
        <accesslog>access.log</accesslog>
        <errorlog>error.log</errorlog>
        <!-- <playlistlog>playlist.log</playlistlog> -->
        <loglevel>3</loglevel> <!-- 4 Debug, 3 Info, 2 Warn, 1 Error -->
        <logsize>10000</logsize> <!-- Max size of a logfile -->
        <!-- If logarchive is enabled (1), then when logsize is reached
             the logfile will be moved to [error|access|playlist].log.DATESTAMP,
             otherwise it will be moved to [error|access|playlist].log.old.
             Default is non-archive mode (i.e. overwrite)
        -->
        <!-- <logarchive>1</logarchive> -->
    </logging>

    <security>
        <chroot>0</chroot>
    </security>
</icecast>