Download list of YouTube videos in MP3 format

yt-dl.sh

#!/usr/bin/env bash

blue='\033[0;34m'
nocolor='\033[0m'
green='\033[0;32m'

downloadFolder="download"
playlistFile="playlist.txt"

function exit_on_error_and_undefined() {
    # Will exit script if we would use an uninitialised variable:
    set -o nounset
    # Will exit script when a simple command (not a control structure) fails:
    set -o errexit
}

function test_dep() {
    command -v "$1" >/dev/null 2>&1
}
function install_if_not_installed() {
    for i in "$@"; do
        test_dep "$i" || sudo apt install -y "$i"
    done
}
function info() {
    echo -e "${blue}------------------------------------------------------------"
    echo -e "$*"
    echo -e "${nocolor}"
}
function success() {
    echo -e "${green}✅ $*${nocolor}"
}

exit_on_error_and_undefined

if [ -t 0 ]; then
    echo "Usage: cat playlist.txt | yt-dl.sh"
    exit 1
fi

install_if_not_installed docker detox rename

mkdir -p "${downloadFolder}"
cd "${downloadFolder}" >/dev/null || exit 1
cat /dev/stdin >"$playlistFile"

info "Downloading songs into: $(pwd)"
docker run \
    --rm -i \
    -e PGID="$(id -g)" \
    -e PUID="$(id -u)" \
    -v "$(pwd)":/workdir:rw \
    mikenye/youtube-dl \
    --extract-audio \
    --audio-format mp3 \
    --ignore-errors \
    --no-overwrites \
    --output "%(title)s.%(ext)s" \
    --continue \
    --batch-file "$playlistFile"
success "Done"

info "Cleaning filenames"
detox -r -v --remove-trailing "$(pwd)"
rename --verbose 's/_/ /g' "$(pwd)"
rename --verbose 's/-/ - /g' "$(pwd)"
success "Done"

rm -f "$playlistFile"
cd - >/dev/null || exit 1