Videos provided by the University Libraries can be found in Discover@MU
The expiration date for video licenses is noted in the catalog record.
The streaming video market is geared toward individual subscription and rental services. Students may already have access to these via a family or individual subscription or may be able to access these at a student rate or through short-term trial.
JustWatch and ReelGood are services for finding what is streaming where. Each has gaps in coverage, so it's good to search both.
Not all freely available video is legally freely available: be careful to reuse, repost, or link to video content that is not infringing copyright.
Video in the public domain can be freely used. The original copyright may have expired, or it may be a publication of the federal government.
Sources to find public domain video:
Video with a Creative Commons license has been proactively licensed for use of specific types or under specific conditions. Be sure to check the terms of the license.
Sources to find CC licensed video: