These tools will help you find public domain videos from a variety of sources. The videos are great for a wide range of multimedia projects and can be reused, modified, and otherwise incorporated into your own creative works.
This site provides access to video footage licensed under a variety of licenses, including Creative Commons licenses, as well as footage in the public domain. You can limit your search to specific license types using the Advanced Search feature. For example, this search returns video content that the Internet Archive has listed as in the public domain.
Vimeo is a video hosting service that offers the option to both browse content that is Creative Commons-licensed and to limit your search results to only Creative Commons-licensed content using their advanced filters.