a=1
b=60
for i in $(gls sources/*.jpg)
do
  o=$(echo converted/$a.jpg)
  o2=$(echo converted/$b.jpg)

  convert $i -strip -geometry 1280x720 -rotate 90 $o

  cp $o $o2

  let a++
  let b--
done

ffmpeg -f image2 -i converted/%d.jpg -filter:v "setpts=3.0*PTS" test.mp4

a=1
b=60
for i in $(gls sources/*.jpg)
do
  o=$(echo converted/$a.jpg)
  o2=$(echo converted/$b.jpg)

  convert $i -strip -geometry 1328x747 -rotate 90 $o
  jpegtran -copy none -optimize -perfect -crop 720x720+16+128 $o > $o2

  cp $o2 $o

  let a++
  let b--
done

ffmpeg -f image2 -i converted/%d.jpg -filter:v "setpts=3.0*PTS" test2.mp4