diff --git a/scripts/birdnet_recording.sh b/scripts/birdnet_recording.sh
index 53e342a..8a3063b 100755
--- a/scripts/birdnet_recording.sh
+++ b/scripts/birdnet_recording.sh
@@ -7,7 +7,7 @@ source /etc/birdnet/birdnet.conf
 if [ ! -z $RTSP_STREAM ];then
   while true;do
     for i in ${RTSP_STREAM//,/ };do
-      ffmpeg -i  ${i} -t 15 -vn -acodec pcm_s16le -ac 2 -ar 48000 file:${RECS_DIR}/$(date "+%F")-birdnet-$(date "+%H:%M:%S").wav
+      ffmpeg -i  ${i} -t ${RECORDING_LENGTH} -vn -acodec pcm_s16le -ac 2 -ar 48000 file:${RECS_DIR}/$(date "+%F")-birdnet-$(date "+%H:%M:%S").wav
     done
   done
 else