capture.sh

#!/bin/bash

while :;do
    filename=`date +"%Y-%m-%d_%H-%M-%S"`
    screencapture -Cx screenshot_${filename}.jpg
    convert screenshot_${filename}.jpg -resize 50% screenshot_${filename}_small.jpg

    # imagesnap -w 2 face_${filename}.jpg
    # convert face_${filename}.jpg -resize 25% face_${filename}_small.jpg

    # convert screenshot_${filename}_small.jpg face_${filename}_small.jpg -gravity southeast -background none \
    # \( -clone 1 -chop 319x0 \) \( -clone 0,2 +append \) \
    # -delete 0,2 +swap -composite capture_${filename}.jpg

    # rm screenshot_${filename}.jpg
    # rm screenshot_${filename}_small.jpg
    # rm face_${filename}.jpg
    # rm face_${filename}_small.jpg

    sleep 5
done

generate_video.sh

#!/bin/bash

a=1
for i in *.jpg; do
  new=$(printf "screenshot_%05d.jpg" "$a")
  mv -- "$i" "$new"
  let a=a+1
done

ffmpeg -r 15 -i screenshot_%5d.jpg timelapse_`date +"%Y-%m-%d"`.mp4