Screen time equals story time — what you see takes exactly as long as it would in reality. Rope and 127 Hours are textbook examples.
Real-time continuity is achieved in editing when the actual duration of the narrated action synchronizes with the projection. No time jumps, no compression — what lasts ninety minutes on screen also lasts ninety minutes in the story. This sounds simple, but in editing, it requires a completely different logic than normal storytelling. You cannot conceal shifts in time of day with cuts, nor can you incorporate transition montages. Every editing decision must be narratively transparent, without stealing time.
Hitchcock demonstrated how rigorously this works with Rope (1948): The film was shot in one take with hidden cuts — the illusion was intended to be that the entire action unfolds in real time. In editing, every transition had to be invisible because any gap would break the real-time continuity. This makes cuts extremely sensitive: No cut is "just" a cut, but always also a temporal statement. If you use a classic match cut, the physical time must be consistent — if a character walks down a hallway, you must respect their walking time, or the viewer will notice the gap.
127 Hours uses real-time continuity differently: The action follows the actual eight days the protagonist is trapped. In editing, this means transitions between day and night must be explicit — you work with visible light changes, not with hidden montages. The editing rhythms do not adapt to the dramatic pace, but to the real duration: slow, stretched-out sequences during waiting periods, no compressive quick-montage during static pauses.
In practice, real-time continuity requires a different kind of patience from the editor. You don't work with classic tension devices (cutting frequency, rhythm acceleration), but with visual development and spatial tension. Breathing is more important than rhythm. Cross-references to long take are unavoidable — many real-time continuity projects use long scenes with minimal cuts. The challenge lies in holding the audience's attention without manipulating time.