Bash script to find and convert WAV files to MP3s to reduce space.

wav-to-mp3.sh

#!/bin/bash

# Converts every WAV file found to MP3 and deletes the original WAV file

set -o errexit

SAMPLE_RATE=44100
BITRATE=192k

WAVS=$(find . -name "*.wav")

IFS=$'\n'
for wavFile in $WAVS; do
  DIRECTORY=$(dirname "$wavFile")
  SONG_NAME=$(basename "$wavFile" .wav)
  MP3_FILE="$DIRECTORY/$SONG_NAME".mp3

  if [ ! -f "$MP3_FILE" ]; then
    # -vn excludes any video content
    # -ac sets number of audio channels
    ffmpeg -i "$wavFile" -vn -ar "$SAMPLE_RATE" -ac 2 -ab "$BITRATE" -f mp3 "$MP3_FILE"
  else
    echo "$MP3_FILE already exists. Only deleting WAV source."
  fi

  rm "$wavFile"
done
unset IFS