especially old ones. Once a work’s copyright or patent restrictions expire, it enters pubic domain. There are, however, some works with restored versions so their copyrights are still valid. You have to find out if this is so because they would appear in the film.
Works made from 1923 to 1949 could have been renewed so it needs to be checked before uploading. For those made from 1950 to 1963, the Library of Congress Database has records of copyright renewals. The site is http://www[dot]copyright[dot]gov/records/cohm[dot]html Works made earlier than 1923 are almost all public domain.
There are three conditions for a video to fall under public domain. First, if the term of copyright for the video has expired. Second, when the author failed to meet formalities set forth by the state to perfect the copyright. Third, when the video is made by the