Have had great success using Kanopy (https://kanopy.com). Works with a lot of educational institutions and libraries (notably for me, the New York Public Library).
I also have access to Kanopy at my local library, but it appears I need to create a Kanopy account in addition to logging into my library system with my library card. I don't approve of turning over PII to a "free" service I've already paid for.
Second kanopy, love the selection, especially Criterion Collection. (NYPL brought me there too).