Edpuzzle

With Edpuzzle, you can create online video lessons for your students.  You can add multiple choice questions, open questions, and more. You can use your own videos, or videos made by others. 

"Edpuzzle is 100% free for teachers and students. Our goal is to never charge a teacher for using Edpuzzle because, as former teachers, we don't think you should ever have to pay out of pocket for the resources you use in class. 
With the free Basic Plan, you can store up to 20 videos in your account. "