Setup mjpg-streamer

nano /etc/config/mjpg-streamer
...
        option port             "8080"
        option password         "admin:password"
nano /etc/init.d/mjpg-streamer
...
        config_get port "$s" 'port'
        config_get password "$s" 'password'
        [ -c "$device" ] || {
...
                --device $device --fps $fps --resolution $resolution" \
                --output "output_http.so -c $password --www $www --port $port"
}
...
/etc/init.d/mjpg-streamer stop
/etc/init.d/mjpg-streamer start

login http://arduino.local:8080/  with admin/password.