record_ffmpeg

#!/bin/bash

camera=camera1
# URL standard Intelbras VIP cams
url="rtsp://admin:password@192.168.0.18/cam/realmonitor?channel=1&subtype=0"
segment=800

trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT

while true; do
	time=$(date +%Y%m%d_%H%M%S)
	now=$(date +%s)
	eta=$(($now + $segment))
	movie="./${time}_${camera}.mkv"
	echo "Recording $movie..."
	ffmpeg -rtsp_transport tcp -t $segment \
		-loglevel 16 \
		-i "$url" \
		-vcodec copy -an -y \
		"$movie" &
	PID="$!"
	while [ -e /proc/$PID ]; do
		sleep 1
		now=$(date +%s)
		remaining=$(($eta - $now))
		if [ "$remaining" -lt -10 ]; then
			echo "*** WARNING ffmpeg hung up"
			kill -9 $PID
			sleep 2
		fi
	done
	now=$(date +%s)
	remaining=$(($eta - $now))
	if [ "$remaining" -gt 0 ]; then
		echo "*** WARNING ffmpeg failed or quit early"
		sleep 60
	fi
done