Download Videos

https://github.com/ytdl-org/youtube-dl/blob/master/README.md

# Install youtube-dl
brew install youtube-dl

# Example to extract and download mp3 from a YouTube playlist
youtube-dl -i -x --audio-format mp3 https://www.youtube.com/playlist?list=PLAdhO41Xw-3WPuopzClryku_gtr5V7YXA

# Example to download just a video
youtube-dl -i https://www.youtube.com/watch?v=NZHn2UhrLZM