Very simple script to convert audio files to a new format

convert_audio.sh

#!/usr/bin/env bash

shopt -s globstar

FROM="opus"
TO="mp3"
OUT_DIR="Converted"

for file in **/*."$FROM"
do
    file_no_ext="${file%.*}"
    new_file="$OUT_DIR/$file_no_ext.$TO"
    new_file_pwd="$(dirname -- "$new_file")"
    
    [[ -f "$new_file" ]] && continue

    echo "$new_file"
    mkdir -p "$new_file_pwd"
    ffmpeg -i "$file" "$new_file"
done