#!/bin/sh
cover="cover.jpg"

for file in *.flac; do
	ffmpeg -i "$file" -i "$cover" -map 0:a -map 1 -codec copy -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (front)" -disposition:v attached_pic "temp-$file"

	# Replace old file with new file
	mv "temp-$file" "$file"
done