Инструменти за Youtube Всичко в едно локално изтегляне mp4,
< Отзив за Youtube-Tools Alles in einem lokalen Download von MP4, MP3.
If you are referring to the script, this is the original, if it is the extension to install in the Google Chrome/Brave browser, that is another improved version.
安装完成之后就多了一个这个，还是不知道如何使用，有没有视频教程