Batch convert flac to mp3 using ffmpeg with configurable quality

convert.sh

#!/bin/bash

if [ $MP3_QUALTY -eq "" ] ; then
	MP3_QUALTY=3
fi

if [ $MP3_COMPRESSION -eq "" ] ; then
	MP3_COMPRESSION=0
fi

if [ $OVERWRITE -ne "" ] ; then
	OVERWRITE="-y"
fi

for i in *.flac ; do
	ffmpeg -i "$i" -c:a libmp3lame -q:a $MP3_QUALTY -compression_level $MP3_COMPRESSION -vsync 2 -threads `nproc` $OVERWRITE "mp3/$i.mp3";
done