I have 2 FOSCAM HD IP camera and 1 UBNT airVision (old model) IP camera which are used for surveillance monitoring. Storage of images is done on the camera's itself, so I only needed something to view the live feeds of the camera's combined an a single screen. I had an old HDMI screen laying around and the Raspberry Pi 3 is yet the perfect (inexpesive fit) for this purpose.


= Getting started =
* Install the standard debian Raspberry Pi and make sure to select console mode. We do need any GUI, since we will be using omxplayer to 


= Monitoring of camera feeds =

/root/kill_stuck_omxplayer.sh:
{{{
#!/bin/sh
#
# Quick to deal with omxplayers which are in deadloop,
# detection based on low-CPU usage
#
for PID in `pgrep omxplayer.bin`; do
  PCPU=`ps -p $PID -o pcpu=`
  if echo $PCPU 2.0 | awk '{exit $1<$2?0:1}'; then
    echo "Lets kill pid $PID"
    kill -KILL $PID
  fi
done
}}}

/etc/crontab:
{{{
*  *    * * *   root    /root/kill_stuck_omxplayer.sh | logger
}}}