RTMP streaming daemon based on FFmpeg

rtmp-stream.conf

# Set settings and rename to rtsp-stream.conf
# Main video stream
camera="rtsp://127.0.0.1/stream"
# ALSA sound input
alsa_i="hw:0"
# RTMP server URL
server="rtmp://a.rtmp.youtube.com/live2"
# RTMP stream name
stream="username.1234-5678-90ad-cdef"
# Video size
v_size="1280x720"
# Video bitrate
v_bitr="2500k"
# Audio samplerate
a_samp="44100"

rtmp-stream.initd.sh

#!/bin/sh

### BEGIN INIT INFO
#
# Provides : rtmp-stream
# Required-Start : $network 
# Required-Stop  : $network
# Default-Start  : 2 3 4 5
# Default-Stop   : 0 1 6
# Short-Description : RTMP Stream
# Description : RTMP Stream
#
### END INIT INFO

prog="rtmp-stream"
config_file="/etc/rtmp-stream.conf"
pid_file="/var/run/rtmp-stream.pid"

if [ "$(id -u)" != "0" ]; then
    echo "This script must be run as root"
    exit 1
fi

start() {
    if [ ! -f $config_file ]; then
        echo "Configuration file missing"
        exit 1
    fi
    if [ -f $pid_file ]; then
        ffmpeg_pid=`cat $pid_file`
        kill -0 $ffmpeg_pid > /dev/null 2>&1
        if [ $? -eq 0 ]; then    
            echo "RTMP streaming is currently active"
            exit 1
        else
            rm $pid_file > /dev/null 2>&1
        fi
    fi
    $prog > /dev/null 2>&1 &
    echo "RTMP streaming started"
}

stop() {
    if [ -f $pid_file ]; then
        ffmpeg_pid=`cat $pid_file`
        kill -2 $ffmpeg_pid > /dev/null 2>&1
        rm -r $pid_file > /dev/null 2>&1
        if [ $? -ne 0 ]; then
            echo "RTMP streaming is not running but PID file exists and was deleted"
        else
            echo "RTMP streaming stopped"
	fi
    else
        echo "RTMP streaming is not started"
        exit 1
    fi
}

case "$1" in
    start)
        start
        exit 0
    ;;
    stop)
        stop
        exit 0
    ;;
    restart)
        stop
        start
        exit 0
    ;;
    **)
        echo "Usage: $0 {start|stop|restart}" 1>&2
        exit 1
    ;;
esac

rtmp-stream.sh

#!/bin/sh
running=true
config="/etc/rtmp-stream.conf"
pid_file="/var/run/rtmp-stream.pid"
log_file="/var/log/rtmp-stream.log"
source $config
if [ -z $log_level ]; then
    log_level="error"
fi
while $running; do
    ffmpeg -v "$log_level" -i "$camera" -f alsa -i "$alsa_i" -map 0 -map 1 -ar "$a_samp" -b:v "$v_bitr" -s "$v_size" -f flv "$server/$stream" >> $log_file 2>&1 &
    ffmpeg_pid=$!
    echo $ffmpeg_pid
    echo $ffmpeg_pid > $pid_file
    if [ $? -eq 0 ]; then
        wait $ffmpeg_pid > /dev/null 2>&1
        if [ ! -f $pid_file ]; then
            running=false
            rm $pid_file > /dev/null 2>&1
        fi
    else
        echo "Unable to write PID file"
        rm $pid_file > /dev/null 2>&1
        exit 1
    fi
done