It is legal to watch a full-length film on YouTube only if the person who uploaded the video had permission from the copyright holder. If that person did not, viewers of the illegal content could be prosecuted, according to CNET.
YouTube has a part of its site dedicated to legally showing full-length movies. Many of these can be rented at a low cost, but some are free, explains Digital Trends.
Some individual YouTube channels have full-length movies available, according to Technology Personalized, but their legality is not verified by YouTube. Users who find movies posted on YouTube that appear to have been recorded in a theater, or whose audio and video are not synchronized, are encouraged to flag the video for copyright infringement. The video is then reviewed by YouTube staff, claims the Houston Chronicle.