Glitch images in Base64, recombine into video

glitch.rb

# take in piped data
f1 = ''
while line = gets
  f1 << line.strip
end

# valid Base64 characters, not including A (binary 0)
set = "RizBSj0CTk1DUl2EVm3FWn4GXo5HYp6IZq7Jar8Kbs9Lct+Mdu/NevOfwPgxQhy".chars

# pick a spot and change character, 840 roughly offsets JPG header data
idx = (rand() * (f1.size - 840)).to_i + 840
f1[idx] = set.sample

# output
puts f1

glitch.sh

set -e

mkdir -p .images
cat image.jpg | base64 > image.b64

# generate and store 100 glitched images based on original jpg
for i in $(seq -f "%03g" 1 100)
do
  echo $i
  cat image.b64 | ruby glitch.rb | base64 -D > .images/image-$i.glitch.jpg
done

ffmpeg -y -r 10 -f image2 -pattern_type glob -i '.images/image-*.glitch.jpg' glitch.mp4