homer bush

bush.sh

#!/bin/sh

set -euxo

cleanup() {
  rm -f 1.mp4 2.mp4 3.mp4 4.mp4 palette.png
}
trap cleanup EXIT

# extend the last frame
ffmpeg -y -i input.gif \
-filter_complex "[0]trim=0:5[hold];[0][hold]concat[extended];[extended][0]overlay" \
-pix_fmt yuv420p -c:a none \
1.mp4

# face overlay
ffmpeg -y -i 1.mp4 -i face.png \
-filter_complex "[0:v][1:v] overlay=213:30:enable='between(n,0,13)'" \
-pix_fmt yuv420p -c:a none \
2.mp4

# circle overlay
ffmpeg -y -i 2.mp4 -i circle.png \
-filter_complex \
"[0:v][1:v] overlay=233:25:enable='between(n,14,24)'" \
-pix_fmt yuv420p -c:a none \
3.mp4

# nose
ffmpeg -y -i 3.mp4 -i nose.png \
-filter_complex \
"[0:v][1:v] overlay=255:23:enable='between(n,25,33)'" \
-pix_fmt yuv420p -c:a none \
4.mp4

# generate gif palette
ffmpeg -y -i 4.mp4 -vf palettegen palette.png

# generate gif
ffmpeg -y -i 4.mp4 -i palette.png -lavfi paletteuse output.gif

circle.png

face.png

input.gif

nose.png