Jpegloop

Basic Loop

cp $j lastframe.jpg

for ((i=100;i>=1;i--))
do

name=$(printf "%03d\n" $((100-i)))
convert lastframe.jpg -quality $i output$name.jpg
cp output$name.jpg lastframe.jpg

done

ffmpeg -f image2 -i output%03d.jpg -r 10 $j.mp4

Apply to a directory of files

#!/bin/bash

for j
do
cp $j lastframe.jpg

    for ((i=100;i>=1;i--))
    do

    name=$(printf "%03d\n" $((100-i)))
    convert lastframe.jpg -quality $i output$name.jpg
    # COPY THE CURRENT TO "lastframe.jpg"
    cp output$name.jpg lastframe.jpg

    
    done
    ffmpeg -f image2 -i output%03d.jpg -r 10 $j.mp4

done