YouTube to mp3 command line script

speedmp3.sh

check_commands() {
	local ok=0
	for command in "$@";do
		if ! command -v "${command}" >/dev/null 2>&1;then
			echo "'${command}' is not installed!"
			ok=1
		fi
	done
	return "${ok}"
}

if ! check_commands sox mid3v2;then
	return 1
fi

local mp3_file="$1"
local speed=${2:-1.25}
sox --show-progress "$mp3_file" "${mp3_file%.*}.x125.mp3" speed "$speed"  # pitch -700
mid3v2 --song="${mp3_file%.*}_x125" "${mp3_file%.*}.x125.mp3"

yt2mp3.sh

check_commands() {
	local ok=0
	for command in "$@";do
		if ! command -v "${command}" >/dev/null 2>&1;then
			echo "'${command}' is not installed!"
			ok=1
		fi
	done
	return "${ok}"
}

if ! check_commands youtube-dl ffmpeg mid3v2;then
	return 1
fi

tmp_file="$(mktemp)"

youtube-dl \
		--extract-audio \
		--audio-format mp3 \
		--ignore-errors \
		--output "%(title)s.%(ext)s" "$1" | tee "${tmp_file}"
    
grep -Po "(?<=\[ffmpeg\] Destination: ).*" "${tmp_file}"|while read -r mp3;do
	mid3v2 --verbose --song="${mp3%.*}" "${mp3}"
done

rm "${tmp_file}"