timelapse

#! /bin/zsh
TIME=$1
FNAME=$2
#if [[ $# != 3]] then;
#  echo "USAGE: $0 time_interval filename"
#  exit 2
#fi

if [[ -f $FNAME ]]; then;
  echo "filename taken!"
  exit 2
fi

a=0
while true
do
  sleep $TIME
  screencapture ${(l:6::0:)a}.png
  ((a++))
  trap "ffmpeg -f image2 -qscale 2 -i %06d.png -same_quant $FNAME;break" 2
done
exit 0