Recipe of the week

rotw-cut.sh

#!/bin/bash

dir=s1
out=out

mkdir -p $out/$dir

re='^[0-9]+$'

for filename in $dir/*; do
	frame=`ffmpeg -sseof -300 -i "$filename" -r 1 -loop 1 -i rotw.png -an -filter_complex 'blend=difference:shortest=1,blackframe=99:32' -f null - 2>&1 | grep blackframe | sed 's/.*frame\:\(.*\)/\1/' | tail -n1`

	if [ -n "$frame" ] && [ "$frame" -eq "$frame" ] 2>/dev/null; then
		echo "✅ Found ROTW frame: $frame in $filename"
		ffmpeg -y -hide_banner -loglevel error -sseof -300 -i "$filename" -ss $(($frame / 25)) -c copy "$out/$filename"
	else
		echo "🚨 ROTW frame not found in $filename"			
	fi
done