As another comment pointed out, youtube-fl is not _circumventing_ the mechanism, it is merely using it as intended by its creators. It does exactly what a web b

As another comment pointed out, youtube-fl is not _circumventing_ the mechanism, it is merely using it as intended by its creators. It does exactly what a web browser must do to play the said videos. Just like a browser is allowed to do the same thing to get the right video, put it right there in plain data on your computer and play it - no proprietary DRM ever steps in the process! - , youtube-dl follows the same steps. So youtube-dl is no different from a browser that also has a "download to your computer" button - every other behavior is the same.