- public domain videos: archive.org
- public domain films by category: http://www.publicdomaintorrents.info/index.html
- NASA movies (including hi-def): https://www.nasa.gov/multimedia/index.html
- vimeo group: free HD footage: http://vimeo.com/groups/freehd
- youtube.com: Do a search with the creative commons filter.
- http://mitchmartinez.com/free-4k-red-epic-stock-footage/
- http://pixabay.com/ Free photos, vector clipart, art illustrations
- https://coverr.co/: Some free stock videos, music, and images; some downloads require registration.