Nothing but positive experiences with youtube-dl, invaluable piece of software IMO.

For people interested in tools like this, or for people who want to just watch videos without downloading, I would also recommend Livestreamer. I use it to watch Crunchyroll streams, and I avoid all the strange issues that come up with their terrible player. No more skipping to random sections of the episode. https://github.com/chrippa/livestreamer