adds 2 frames with blended opacity in between each 2 jpg images in a folder

img-morphing.sh

#!/bin/bash
# adds 2 frames with blended opacity in between each 2 jpg images in a folder

if [ "$#" -ne 1 ]; then
  echo "Usage: $0 <input_directory>"
  exit 1
fi

input_dir="$1"

if [ ! -d "$input_dir" ]; then
  echo "Error: Directory '$input_dir' does not exist."
  exit 1
fi

output_dir="morphed_frames"
mkdir -p "$output_dir"


images=( "$input_dir"/*.jpg )
num_images=${#images[@]}
morph_frames=2  # Number of intermediate frames between each pair

if [ "$num_images" -lt 2 ]; then
  echo "Not enough images to process (need at least 2)."
  exit 1
fi

for ((i=0; i<$num_images-1; i++)); do
  img1="${images[$i]}"
  img2="${images[$((i+1))]}"

  magick "$img1" "$img2" -morph "$morph_frames" "$output_dir/morph_${i}_%02d.jpg"
done

echo "Morphing complete. Check the '$output_dir' folder."