Create a single file mix from a youtube playlist.

playlist_to_mix.sh

#!/bin/bash

if [ $# -ne 1 ]; then
    echo "Usage: $0 <id_de_la_playlist>"
    exit 1
fi

playlist_id="$1"
temp_dir=$(mktemp -d)

./yt-dlp_linux -x --audio-format mp3 --output "$temp_dir/%(title)s.%(ext)s" "https://www.youtube.com/playlist?list=$playlist_id"

cd "$temp_dir" || exit 1
rename "s/'//g" *.mp3

for f in *.mp3; do echo "file '$PWD/$f'"; done > list.txt

ffmpeg -f concat -safe 0 -i list.txt -acodec libmp3lame -q:a 2 final_mix.mp3

mv final_mix.mp3 "$OLDPWD"/

cd "$OLDPWD" || exit 1
rm -rf "$temp_dir"