Linux ffmpeg background audio recorder

purge.sh

#!/usr/bin/env bash
# Delete old recordings.

DIR="$HOME/rec"
EXPIRE=7
find $DIR -mtime +$EXPIRE -type f -delete

record.sh

#!/usr/bin/env bash

# Put recordings in this folder
DIR="$HOME/rec"

# Prefix each file name with a timestamp
NAME=$(date +%Y%m%d%H%M%S)

# Split recording after $SEG seconds
SEG=3600

# Start recording

# ALSA: (this works more directly with the hardware, but it disables pulseaudio, which is not so nice)
#ffmpeg -loglevel warning -f alsa -i hw:0 -f segment -segment_time $SEG ${DIR}/${NAME}_%d.mp3

# Pulseaudio:
# TODO: Wait for pulseaudio to start!
ffmpeg -loglevel warning -f pulse -i alsa_input.pci-0000_00_1b.0.analog-stereo -f segment -segment_time $SEG ${DIR}/${NAME}_%d.mp3