Reverse-Engineering YouTube: Revisited

The article is written by an author who previously wrote about how YouTube worked and how to exploit that knowledge to download videos. They explain that many things have changed since that article was written, such as YouTube's internal API being restructured, and some of the internal endpoints that were reverse-engineered in the early days have been removed.

They go on to cover the current state of YouTube's internal API, highlighting the most important changes and explaining how to retrieve video metadata and media streams. The author also covers how to work around content restrictions, which may prevent videos from being played or downloaded.