frigate_export.sh

frigate_export.sh

#!/bin/bash 
TMP_PATH=/tmp/work
# STORAGE_PATH="/net/sahara/Storage/Security/events"
# /net/security/frigate/recordings/2023-04-14/*/front/*.mp4

STORAGE_PATH="/net/security/frigate/recordings"
OUTPUT_PATH="/net/security/exports"
# list or of monitors with output fps. 
MONITORS="front 30,doorbell 30,pathway 30,backdoor 30,patio 30"
FILES_TOKEEP=14
FFM_GLOBAL="-hide_banner -loglevel panic -y"
FFM_HW="-hwaccel cuda -hwaccel_output_format cuda -extra_hw_frames 8  -an -skip_frame nokey"
FFM_OPTS="-c:v h264_nvenc -cq:v 27"
URL=https://frigate.domain.com
# FFM_DEBUG="-v debug -y"
DOCKER_CMD='docker run --rm --gpus device=0 -v /net:/net:shared -v /tmp/work:/tmp/work --user www-data:www-data linuxserver/ffmpeg'
PROBE_CMD='docker run --rm --gpus device=0 -v /net:/net:shared -v /tmp/work:/tmp/work --user www-data:www-data --entrypoint=/usr/local/bin/ffprobe linuxserver/ffmpeg'
var=$1

if [ ! -z "$1" ] ; then
	DATE=${1};
	TODAY=`/bin/date -d "${DATE}+1 day" +"%Y%m%d"`
	YESTERDAY=`date -d "${DATE}" +"%Y%m%d"`
else
	TODAY=`/bin/date -d "today"  +"%Y%m%d"`
	DATE=`date -d "${TODAY}-1 day" +"%Y-%m-%d"`
	YESTERDAY=`date -d "${TODAY}-1 day" +"%Y%m%d"`
fi
if [ ! -z ${TMP_PATH} ] ; then
	mkdir -p ${TMP_PATH}
fi

start=$(date +%s -d"${YESTERDAY}")
end=$(date +%s -d"${TODAY}")

IFS=","
for k in ${MONITORS} 
do
	# Extract framerate and monitor name from tuple
        IFS=" "
	set -- $k
	MONITOR=$1
	FRAMERATE=$2 
	unset IFS

        # Cleanup old files
        FILENAME=${DATE}_${MONITOR}
	echo -n "${MONITOR} on ${DATE} @ ${FRAMERATE}fps "
        echo -n "probing,"
	if DURATION=`${PROBE_CMD} ${FFM_DEBUG}  -show_entries format=duration -v quiet -of csv='p=0'  ${URL}/vod/${MONITOR}/start/$start/end/$end/index.m3u8`  ; then

		PTS=`echo "scale=4; 60/${DURATION}" |  bc`
		if (( $(echo "0.04 < ${PTS}" |bc -l) )); then
		   PTS=0.04
		   SPEEDUP=`echo "scale=1; 1/${PTS}" | bc`
		else
		   SPEEDUP=`echo "scale=1; ${DURATION}/60" | bc`
		fi 
		echo -n "encoding ${SPEEDUP}x"
		$DOCKER_CMD ${FFM_GLOBAL} ${FFM_HW} -i  ${URL}/vod/${MONITOR}/start/$start/end/$end/index.m3u8 ${FFM_OPTS}  -vf setpts=${PTS}*PTS -r ${FRAMERATE}  ${OUTPUT_PATH}/${MONITOR}/${FILENAME}.mp4
		touch -d ${DATE} ${OUTPUT_PATH}/${MONITOR}/${FILENAME}.mp4
		# ln -s /media/exports/${MONITOR}/${FILENAME}.mp4 ${OUTPUT_PATH}/../frigate/exports/${MONITOR}\ ${DATE}.mp4 
	else	
		echo -n "no events"
	fi
	echo ",done."

	FILES=`ls -t1 ${OUTPUT_PATH}/${MONITOR}/*.mp4 | tail -n +$(($FILES_TOKEEP+1))`
	if [ ! -z "$FILES" ] ; then
 		rm $FILES
		echo "Removed old file $FILES" 
 	fi

done;

# Clean up
docker ps -a | awk '{ print $1,$2 }' | grep ffmpeg | awk '{print $1 }' | xargs -I {} docker rm {} > /dev/null 2>&1
rm -f ${TMP_PATH}/*