The 180-degree rule is simple in theory. Stay on one side of the line of action, and that's it. But is it really that simple? In this video I go through the 180-degree rule in film for one person, two-person, three-person and four or more person-shots. How do you use it effectively, and how do you match eye-lines? This video has it all.
This masterclass from wolfcrow.com explains this sometimes quite confusing issue very clearly: https://www.youtube.com/watch?v=IV86Gox3nmA