Turns a boring SDR image into a retina-melting HDR AVIF

shine-bright-like-a-diamond.bash

#!/usr/bin/env bash

# This script turns a boring SDR image into a retina-melting HDR AVIF
# Requires: ffmpeg with libaom-av1, ImageMagick (optional), and possibly a life reevaluation

INPUT="$1"
OUTPUT="${2:-shine.avif}"

if [ -z "$INPUT" ]; then
  echo "Usage: $0 input.jpg [output.avif]"
  exit 1
fi

echo "✨ Cooking up some visual trauma..."

# Step 1: Use ffmpeg to tone-map image and encode as HDR AVIF
ffmpeg -y -i "$INPUT" \
  -vf "eq=brightness=1.0:saturation=2.2:contrast=1.3,format=gbrp10le" \
  -color_primaries bt2020 \
  -colorspace bt2020nc \
  -color_trc smpte2084 \
  -pix_fmt yuv420p10le \
  -c:v libaom-av1 \
  -still-picture 1 \
  -strict experimental \
  "$OUTPUT"

echo "✅ File saved as $OUTPUT — now go blind your followers."