Are there movies without copyright

Answer 1

Yes, "Night of the Living Dead" is a good example, which fell out of Copyright after they failed to note a copyright notice in one of the film materials.

From Archive.org: "If the work was made in 1923 or earlier, it is probably public domain and can be uploaded. NOTE! Restored versions of the film or new soundtracks for silent films can have more recent copyrights that are still valid - usually a copyright notice for a new soundtrack or restoration will appear in the film. For works made from 1923 to 1949, post a question to the movie forum on this site [at archive.org] before you upload. The copyright could have been renewed and there isn't a way online to check a film's copyright status. For works made from 1950 to 1963, you can check the title at the Library of Congress Copyright Database for copyright renewals: http://www.copyright.gov/records/cohm.html . This will list copyright renewals for most films." A video may fall under public domain if: (1) the term of copyright for the video has expired; (2) the author failed to satisfy statutory formalities to perfect the copyright or (3) the video is a work of the U.S. Government.