livewire-streamer

This is a simple set of Ubuntu scripts that runs some utilities to pipe audio from a Livewire network to an instance of Icecast.

• Livewire is a proprietary branch of AES69 protocol used in the broadcast industry to stream CD quality audio over a network.

Setup

You need a small Ubuntu VM on your Livewire network, I used 16.04, you can probably get away with 1 core if you run server edition. Suppose your current user is axia.

1. Configure multicast on your Livewire network interface. Suppose it's ens33: sudo ifconfig ens33 multicast

2. Don't forget to add route of multicast traffic to your Livewire interface if you have more than one network interface: sudo route add -net 224.0.0.0 netmask 240.0.0.0 dev ens33 or add route to /etc/network/interfaces:

auto ens33
iface ens33 inet static
        address 172.22.0.100
        netmask 255.255.0.0
        network 172.22.0.0
        broadcast 172.22.255.255
        up route add -net 224.0.0.0 netmask 240.0.0.0 dev ens33

and restart interface: sudo ifdown ens33 && ifup ens33

3. Do Linux Update: sudo apt update && sudo apt upgrade -y

4. Install AVconv, dumpRTP and ezStream: sudo apt install -y libav-tools ezstream dvbstream

• libav-tools for avconv utility, make sure it's installed with MP3 support
• ezstream for streaming to icecast
• dvbstream for the dumptrp utility

5. Copy stream.sh and stream-restart.sh to user's home folder: /home/axia/

• Set permissions for www-data: sudo chown www-data:www-data /home/axia/stream*.sh && sudo chmod +x /home/axia/stream*.sh

6. Edit ezstream.xml for your Icecast connecting.

• Copy ezstream.xml to /home/axia/
• Permissions for ezstream.xml are axia:axia and 644.

7. Create stream service for systemd:

• put stream.service to /etc/systemd/system/
• sudo chmod 644 /etc/systemd/system/stream.service
• sudo chown root:root /etc/systemd/system/stream.service

Service management:

• Reload systemd: sudo systemctl daemon-reload
• Enable and start service: sudo systemctl enable stream && sudo systemctl start stream
• Check service status: sudo systemctl status stream or sudo journalctl -u stream
• Edit service configuration: sudo systemctl edit --full stream Notice that service is running from www-data user (User=www-data).

8. Install Apache2 and PHP: sudo apt install -y apache2 php

9. Edit index.php:

• find strings http://YOUR-ICECAST-SERVER:8000/axia and replace this address of stream accordingly ezstream.xml settings

10. Copy index.php to /var/www/html

11. Open http://your-ubuntu-host/index.php in browser, input Livewire channel, click "Write config to File" and click PLAY link.

Configuration

Output formatting

• avconv -f s24be -ar 48k -ac 2 -i - -f mp3 -b:a 320K - This portion of the command transcodes the audio
  • -f mp3 Change that to the format you want to stream / output, Check avconv -formats for output codecs
  • -b:a 320K Change 320K to the bit rate you want to stream

Preview

Troubleshooting

• Check service status: sudo systemctl status stream or sudo journalctl -u stream