Linux / Mac Osx - Bash Script - Convert files of a directory - from flac to mp3 - with VLC.

vlc_converter_flac_to_mp3.sh

#!/bin/sh                                                                                                                                                     

# cd to/your/directory before...

######################## Transcode the files using ... ########################
acodec="mp3"
ab="192"
channels="2"
samplerate="44100"
mux="raw"
###############################################################################

# Store path to VLC in $vlc
if command -pv vlc >/dev/null 2>&1; then
	# Linux should find "vlc" when searching PATH
	vlc="vlc"
else
	# macOS seems to need an alias
	vlc="/Applications/VLC.app/Contents/MacOS/VLC"
fi
# Sanity check
if ! command -pv "$vlc" >/dev/null 2>&1; then
	printf '%s\n' "Cannot find path to VLC. Abort." >&2
	exit 1
fi
 
for filename in ./*.flac; do

	# This is cause sometime vlc could crash - if so, execute this script again
	if test -f "$filename.mp3"; then
		eval $(stat -s "$filename.mp3")
    		if (( $st_size > 32768 )) ; then
    			printf '%s\n' "'$filename' skipped... "
    			printf '\n'
	        	continue
		fi
	fi

 	printf '%s\n' "=> Transcoding '$filename'... "
    
	"$vlc" -I dummy "$filename" --sout="#transcode{acodec=$acodec,samplerate=$samplerate,channels=$channels,ab=$ab}:standard{mux=$mux,dst=\"$filename.mp3\",access=file}" vlc://quit
    
	ls -lh "$filename" "$filename.mp3"
	printf '\n'

done