Simple script to record desktop in the background using ffmpeg and ImageMagick

record_desktop.sh

#!/bin/bash -eux

DESTINATION_VIDEO_FILE="$HOME/Videos/`date +%F_%T`.mkv"
DESTINATION_SCREENSHOT_DIRECTORY="$HOME/Pictures/"
MAX_RECORDING_TIME="18000" #seconds (5 hours)


echo "*** $DESTINATION_VIDEO_FILE"

ffmpeg -loglevel error -f x11grab -draw_mouse 1 -framerate 25 -video_size 1920x1080 -i :0+0,0 -pix_fmt yuv420p -c:v libx265 -x265-params crf=28 -preset veryfast -to ${MAX_RECORDING_TIME} $DESTINATION_VIDEO_FILE &
echo $! > /tmp/`basename $0`_video.pid

echo "*** $DESTINATION_SCREENSHOT_DIRECTORY"

COUNTER=0
(
while [ $(( COUNTER * 10 )) -le $MAX_RECORDING_TIME ]; do
  COUNTER=$((COUNTER+1))
  import -window root ${DESTINATION_SCREENSHOT_DIRECTORY}/`date +%F_%T`.png &
  sleep 10
done
) &
echo $! > /tmp/`basename $0`_pics.pid