Concise explanations are available online for these latter methods using either Windows or Mac OSX.
There are two methods to creating a screenshot using VLC.The first is to use the 'snapshot' function built into the player, and the second is using whatever functionality is built into your operating system (Windows, OSX, etc.). Refer to the Library’s copyright and fair use guide for more information and to the Society for Cinema and Media Studies’ Statement of Fair Use Best Practices for Media Studies Publishing for a more comprehensive treatment of Fair Use. Any other use of copyrighted works without the permission of the rights holder is unlawful. Use of limited portions of copyrighted works for the purposes of criticism, comment, news reporting, teaching, scholarship, or research are permitted under the Fair Use Doctrine presented in Section 107 of the US Copyright Act of 1976.
