Record from RTSP IP Camera

record.sh

#!/usr/bin/bash

# Change to recording directory
cd /samba/ipcam

# Amount of time of the recording session
# Adjust to match the cron schedule
end=$((SECONDS+3599))


while [ $SECONDS -lt $end ]
  do
    #The ffmpeg parameters should be changed to account the camera and situation
    /usr/local/bin/ffmpeg -fflags +genpts -r 15 -t 00:59:55 -rtsp_transport udp -i rtsp://admin:password@<CAMERA-IP>:554/onvif1 \
        -strict -2 -vcodec copy -an -map 0 -f ssegment -strftime 1 -segment_time 900 \
        -segment_format mp4 -reset_timestamps 1 -drop_pkts_on_overflow 1 -attempt_recovery 1 \
        -recover_any_error 1 -blocksize 4096 -flush_packets 1 capture_%Y-%m-%d_%H-%M-%S.mp4 &
    PID=$!
    running=true

    #After running the ffmpeg this will keep checking if there are recordings being made by
    #counting the space in the record directory each minute. If it stops growing the script
    #infers ffmpeg had some problem and asks it nicely to stop (signal 2 - SIGINT)
    while [ "$running" = "true" ]
      do
         linea=`du -sc -- * | grep total`
         echo A $linea
         sleep 60
         lineb=`du -sc -- * | grep total`
         echo B $lineb
         if [ "$linea" = "$lineb" ]
         then
             echo "ffmpeg has hung, restarting"
             kill -2 $PID
             #After sending a signal 2 to ffmpeg stop gracefully, check for 10 seconds if it indeed
             #exit. If not, send a 9 SIGKILL 
             i=0
             while ps -p $PID > /dev/null
             do
                 sleep 1
                 ((i++))
                 if [ $i -gt 10 ]
                 then
                   if ps -p $PID > /dev/null
                   then
                    kill -9 $PID
                   fi
                 fi
             done
             #This breaks the checking loop so the ffmpeg can be restarted by the main loop
             running=false
         fi
       done
  done