ffmpeg parallel batch/bulk convert opus to mp3 with meta data

README.md

# install parallel if you don't have one
brew install parallel

chmod +x convert.sh
./convert.sh

# delete opus files
find . -type f -name '*.opus' -delete

convert.sh

#!/bin/bash

my_func() {
  file=$1
  ffmpeg -i "$file" -map_metadata 0:s:a:0 "${file%.opus}.mp3" >/dev/null 2>&1
}

export -f my_func

find . -type f -name '*.opus' -print0 | parallel -j 8 -0 my_func {}