Legally would be DVDs, Blurays, and DRM-free sources.

I’ve torrented movies I have physical copies of before. It’s faster than ripping and encoding it myself. And notice I didn’t say “pirated”?

You can’t pirate something you legally own a copy of. That fast was a major factor in some of the high profile lawsuits against individuals. If the person being sued owned a copy of the movie/song then they dropped it from the list.