Download youtube videos when subscribed channel uploads new live video

marasy8 regularly uploads live video to YouTube, and then marks them as private after the session ends. However, I live in another country so I have different time than his. This makes it almost impossible for me to directly watch those. As a solution, I’m thinking about downloading those videos as soon as the session starts. Is that possible? (That is, as soon as the session starts, the youtube-dl command is executed)