#!/bin/bash

SC_ROOT="screenshots"
OUTPUT_DIR="out/video"

render_dir () {
	ffmpeg \
		-y \
		-loglevel quiet \
		-framerate 30 \
		-i $1/hackcel_%003d.png \
		-c:v libx264 \
		-pix_fmt yuv420p \
		$OUTPUT_DIR/${1##*/}.mp4
}

mkdir -p $OUTPUT_DIR

echo "Making episode files..."
for D in $SC_ROOT/*; do
	if [ -d "${D}" ]; then
		render_dir $D
	fi
done

echo "Done."


# Generate video for each run
for f in $OUTPUT_DIR/*.mp4; do
	echo file \'$f\' >> merge_list;
done

# Merge videos
ffmpeg \
	-loglevel quiet -stats -y \
	-f concat \
	-safe 0 \
	-i merge_list \
	-c copy \
	$OUTPUT_DIR/00-all.mp4 

rm merge_list

# Make accelerated video
ffmpeg \
	-i $OUTPUT_DIR/00-all.mp4 -y \
	-r 60 \
	-filter:v "setpts=0.125*PTS" \
	8x.mkv