Traditional Culture Encyclopedia - Photography major - What does "framing" mean in movies?

What does "framing" mean in movies?

The world seen through the lens is limited, so photography is divided into internal space and external space, and the framing in my understanding refers to considering the frame problem between internal space and external space. How to make the scene achieve the best configuration effect in the painting space, or what effect should be achieved when moving lens painting enters painting, and so on. Personal point of view