Useful one-libers for working with USB audio on Rasberry Pi

audioCaptureOnRPi

# Setup an RTMP streaming server running in Docker
docker run -d -p 1935:1935 --name nginx-rtmp tiangolo/nginx-rtmp

# Alsa tools needed for convenient sound interfacing
sudo apt-get -y install alsa-tools
sudo apt-get -y install alsa-utils

sudo apt install ffmpeg

# Start an RTMP stream to a remote streaming server
ffmpeg -f alsa -ac 1 -i plughw:1,0  -ar 44100 -b:a 256k -f flv rtmp://<IP_OF_STREAMING_SERVER>/live/rp2

# DEBUG VERSION (log evel) Start an RTMP stream to a remote streaming server
ffmpeg -loglevel verbose -f alsa -ac 1 -i plughw:1,0  -ar 44100 -b:a 256k -f flv rtmp://<IP_OF_STREAMING_SERVER>/live/rp2

# List USB capture devices (needed for the plughw)
arecord --list-devices

# Adjust input gain/levels
alsamixer