Looking for sources? Search EBSCO or QuickSearch.
For library video databases, like Films on Demand, Kanopy, or American History in Video, you have the option of either linking to the page in the database where the video is hosted OR directly embedding the video into your course. To embed a video, you will need to copy/paste some HTML code into your Canvas course.
Follow the example below, or contact a librarian for help!
(Image from Flickr)