# good to know
with pipewire-aes67 only sources are announced with sap, this means streams from other devices just 'show up' 

# Prerequisites
sudo rpi-update
sudo apt install pipewire linuxptp

# add udev rule
sudo cp 90-pipewire-aes67-ptp.rules /etc/udev/rules.d/
sudo udevadm control --reload-rules && sudo udevadm trigger

# start ptp
sudo ptp4l -mq -i eth0 -f ptp_aes67_1.conf
also try (SOFTWARE sync!):
sudo ptp4l -i eth0 -s -l 7 -m -q
TODO: try to use two cm4  clock sync - with rpi5 and cm4 sync is lost periodicaly

# make a copy of pipewire setup file 
mkdir -p ~/.config/pipewire/
sudo cp /usr/share/pipewire/pipewire-aes67.conf ~/.config/pipewire/


# start pipewire
pipewire-aes67

# show devices
pw-cli ls Node
pw-link -o    # List output ports (sources, e.g. rtp-sink)
pw-link -i    # List input ports (sinks, e.g. Jabra SPEAK 410)

# Attach a monitor
pw-link stream_box1:receive_CH1 alsa_output.usb-0b0e_Jabra_SPEAK_410_USB_08C8C2AE9777x011200-00.analog-stereo:playback_FL
pw-link AVIOUSB-8f6326 : 2:receive_Left alsa_output.usb-0b0e_Jabra_SPEAK_410_USB_08C8C2AE9777x011200-00.analog-stereo:playback_FL


systemctl --user status pipewire
should not show broken pipe
additional logs: journalctl -xe | grep pipewire 


# show links
pw-link -l

# test
apt install ffmpeg
ffmpeg -re -i /usr/share/sounds/alsa/Front_Center.wav \
  -acodec pcm_s16le -ar 48000 -ac 2 \
  -f rtp rtp://239.69.150.243:5004

# troubleshooting
- if rtp sources keep 'piling up'
  - $ systemctl --user restart pipewire.service