Quick lazy script to download youtube videos as mp3 using yt-dlp

ytmp3.bat

@echo off

rem ; Set environment to local so that we don't leak variables
setlocal

set ytid=%1

IF "%ytid:~0,24%"=="https://www.youtube.com/" goto warning-link
IF "%ytid:~0,23%"=="http://www.youtube.com/" goto warning-link
IF "%ytid:~0,20%"=="https://youtube.com/" goto warning-link
IF "%ytid:~0,19%"=="http://youtube.com/" goto warning-link

IF "%ytid:~0,22%"=="https://www.youtu.be/" goto skip-id-check
IF "%ytid:~0,21%"=="http://www.youtu.be/" goto skip-id-check
IF "%ytid:~0,17%"=="http://youtu.be/" goto skip-id-check
IF "%ytid:~0,16%"=="https://youtu.be/" goto skip-id-check

rem ; Possibly video-id only.
set ytid=https://youtu.be/%ytid%
goto skip-id-check

:skip-id-check
@echo on
yt-dlp --no-playlist -f bestaudio -x --audio-format mp3 --audio-quality 0 --add-metadata --embed-thumbnail -o "%%(artist,uploader,channel)s - %%(title,alt_title)s [%%(id)s].%%(ext)s" "%ytid%"
@echo off
goto end-download

:warning-link
echo Using youtube.com / youtu.be link, CMD truncates equal signs - ignoring.
goto end-download

:end-download

rem ; End of script
endlocal