Quieten System logs

Attempt to quieten the amount of log noise being generated by some of the birdnet services visible in the syslog and daemon.log

Recording service
When using RTSP streams the recording service  is generating massive amounts of noise in the logs as it's basically outputting all it's startup info and also outputting stream and export info.
- Set the log level to only output errors

Also the birdnet_recoding service script is outputting it;s contents, I assume was doing this because of the set -x option at the beginning,
-Commenting this fixed that issue

Analysis Service
Small change to this it doesn't output a error when it can't find today's recording directory. It's a non issue if your recording via sound card but it pops up a bit when using RTSP streams as that directory is never created.

Livestream Service
Same treatment as the recording service, set log level to error. It was previously set to info and would occasionally output a massive chunk of output.. presumably abut the encoding processes.

scripts/birdnet_analysis.sh

@@ -189,7 +189,7 @@ TODAY="$RECS_DIR/$(date "+%B-%Y/%d-%A")"
 if [ $(find ${YESTERDAY} -name '*wav' 2>/dev/null | wc -l) -gt 0 ];then
   find $YESTERDAY -name '*wav' -type f -size 0 -delete
   run_birdnet "${YESTERDAY}"
-elif [ $(find ${TODAY} -name '*wav' | wc -l) -gt 0 ];then
+elif [ $(find ${TODAY} -name '*wav' 2>/dev/null | wc -l) -gt 0 ];then
   find $TODAY -name '*wav' -type f -size 0 -delete
   run_birdnet "${TODAY}"
 fi

scripts/birdnet_recording.sh

@@ -1,8 +1,11 @@
 #!/usr/bin/env bash
-# Performs the recording from the specified RSTP stream or soundcard
-set -x
+# Performs the recording from the specified RTSP stream or soundcard
+#set -x
 source /etc/birdnet/birdnet.conf
 
+# S
+LOGGING_LEVEL='error'
+
 [ -z $RECORDING_LENGTH ] && RECORDING_LENGTH=15
 
 if [ ! -z $RTSP_STREAM ];then
@@ -33,7 +36,7 @@ if [ ! -z $RTSP_STREAM ];then
 
   # Make sure were passing something valid to ffmpeg, ffmpeg will run interactive and control our look by waiting ${RECORDING_LENGTH} between loops
   if [ -n "$FFMPEG_PARAMS" ];then
-    ffmpeg -nostdin $FFMPEG_PARAMS
+    ffmpeg -hide_banner -loglevel $LOGGING_LEVEL -nostdin $FFMPEG_PARAMS
   fi
 
   done

scripts/livestream.sh

@@ -2,6 +2,9 @@
 # Live Audio Stream Service Script
 source /etc/birdnet/birdnet.conf
 
+# Set logging level
+LOGGING_LEVEL='error'
+
 if [ -z ${REC_CARD} ];then
   echo "Stream not supported"
 elif [[ ! -z ${RTSP_STREAM} ]];then
@@ -22,11 +25,11 @@ elif [[ ! -z ${RTSP_STREAM} ]];then
     SELECTED_RSTP_STREAM=${RSTP_STREAMS_EXPLODED_ARRAY[0]}
   fi
 
-  ffmpeg -nostdin -loglevel 32 -ac ${CHANNELS} -i ${SELECTED_RSTP_STREAM} -acodec libmp3lame \
+  ffmpeg -nostdin -loglevel $LOGGING_LEVEL -ac ${CHANNELS} -i ${SELECTED_RSTP_STREAM} -acodec libmp3lame \
     -b:a 320k -ac ${CHANNELS} -content_type 'audio/mpeg' \
     -f mp3 icecast://source:${ICE_PWD}@localhost:8000/stream -re
 else
-	ffmpeg -nostdin -loglevel 32 -ac ${CHANNELS} -f alsa -i ${REC_CARD} -acodec libmp3lame \
+	ffmpeg -nostdin -loglevel $LOGGING_LEVEL -ac ${CHANNELS} -f alsa -i ${REC_CARD} -acodec libmp3lame \
     -b:a 320k -ac ${CHANNELS} -content_type 'audio/mpeg' \
     -f mp3 icecast://source:${ICE_PWD}@localhost:8000/stream -re
 fi