What film editors actually do. The invisible techniques you've seen a thousand times and probably never named.
The editor is the most invisible serious craftsperson on a film. Directors get the Oscars; cinematographers get the magazine spreads; the editor sits in a dark room for eighteen months making decisions that shape what the film actually is and almost no one outside the industry can name them.
This piece is a working guide. We'll go through the techniques an editor uses, with examples you've almost certainly seen.
The dominant grammar of mainstream cinema since the 1910s. Continuity editing is what makes a conversation between two people work onscreen: shot of person A speaking, reverse shot of person B reacting, master shot showing both of them, then back to A. The cuts are arranged so the audience experiences the scene as continuous space and time.
The most-broken rule of continuity editing is the 180-degree rule — the imaginary line between two characters that the camera shouldn't cross, so that screen direction stays consistent. Almost every major film breaks it occasionally; what matters is whether the break is disorienting or controlled. Stanley Kubrick deliberately crosses the line in 2001 to make the audience feel unmoored.
The Soviet filmmaker Lev Kuleshov ran an experiment in 1918. He intercut the same shot of an expressionless actor with three different inserts: a bowl of soup, a child in a coffin, and a woman on a couch. Audiences praised the actor's range — saying he conveyed hunger, grief, and desire. He had done nothing. The meaning came from the cut.
The Kuleshov effect is the foundation of almost everything else editing does. Meaning lives between the shots. Most reaction shots in any modern film are doing Kuleshov work — the audience is constructing the emotional content out of two adjacent images.
A cut from one shot to another where some visual element matches — shape, motion, colour, composition. The most famous match cut in cinema is in 2001: A Space Odyssey: a hominid throws a bone in the air, and the bone match-cuts to a spaceship four million years later. Kubrick replaces evolution with one cut.
Match cuts can also be psychological. In The Godfather, Coppola match-cuts between Michael Corleone watching a baptism and his hitmen committing the murders he's ordered. The matching is conceptual rather than visual; the cut argues that Michael is performing both rituals simultaneously.
A cut between two shots of the same subject, with the camera moved only slightly or the time elapsed obviously. Jump cuts break continuity deliberately. They were rare in mainstream cinema before Jean-Luc Godard used them throughout Breathless (1960); now they're a standard visual signature of nervous energy.
YouTube video editing uses jump cuts so heavily that audiences born after about 2010 don't perceive them as a violation — they perceive them as the normal state of moving image. The grammar has shifted.
Cutting between two or more scenes happening simultaneously or thematically. D.W. Griffith popularised cross-cutting in the 1910s with last-minute rescue sequences. By the 1970s it had become a standard structural tool: the Godfather's baptism-murder sequence (mentioned above), the final chases in The Silence of the Lambs.
Christopher Nolan has built his career largely on cross-cutting at scale. Inception cross-cuts five dream levels with different time dilations. Interstellar cross-cuts between the relativistic timeline on Miller's planet and the family aging back on Earth. The technique is the structural backbone of his films.
A sequence of short shots compressed to convey time, process, or thematic association. Soviet montage theorists (Eisenstein, Pudovkin, Vertov) treated montage as the essential language of cinema, where meaning is generated by the collision of shots. Eisenstein's Odessa Steps sequence in Battleship Potemkin (1925) is the textbook example.
In Hollywood, montage has come to mean the training sequence — Rocky running up the steps, Daniel-san painting the fence, the working-on-the-bomb sequence in Oppenheimer. Compressed time, score-driven, ending where the plot needs to be.
Audio and video don't have to cut at the same moment. An L-cut lets the audio from the outgoing scene continue into the new shot; a J-cut lets the audio from the incoming scene start before its image. Both create a sense of overlap and forward momentum.
Walter Murch — Coppola's longtime editor — wrote the canonical book on these techniques (In the Blink of an Eye, 1995). His use of split edits in The Godfather and Apocalypse Now is, for most editors, the standard against which their own work is measured.
The dissolve — one image gradually replacing another — was the dominant transition in classical Hollywood. It typically signals the passage of time. The fade to black signals the passage of an entire act. Both are now rare in mainstream cinema, which has shifted to the straight cut as the default.
When a contemporary film uses a dissolve, it's almost always doing memorial work. Forrest Gump dissolves from Forrest at Jenny's grave to a feather drifting on the wind. The choice is consciously old-fashioned.
An editor's decision to not cut. The long take is the absence of editing as a deliberate effect. Goodfellas's Copacabana sequence runs three minutes unbroken. Children of Men's roadside ambush runs four. 1917 (2019) was constructed to appear as a single take. Birdman did the same.
What the long take buys you, at its best, is the audience's recognition that everything they're watching had to actually happen in the order shown. That recognition produces tension that conventional editing can't replicate.
An editor's choice to assemble the film in reverse temporal order. Christopher Nolan's Memento (2000) tells the story backwards in alternating black-and-white and colour sequences. Gaspar Noé's Irréversible (2002) runs in reverse, twelve scenes from end to beginning. The films are not gimmicks — they use the reversal to make the audience experience time the way a character would.
Most of the techniques above are visible. The bulk of an editor's work isn't. The work is: choosing which take to use. Cutting a half-second earlier or later on a reaction shot. Removing a line of dialogue that the screenplay required but the actor doesn't need. Restructuring scenes that don't work. Restructuring acts that don't work. Saving the film, sometimes.
Thelma Schoonmaker — Scorsese's editor since Raging Bull — has been openly credited by Scorsese with shaping the rhythm of every Scorsese film since 1980. Michael Kahn has edited every Spielberg film since Close Encounters. Lee Smith cut Nolan's films from Batman Begins through Dunkirk. The editor-director collaboration is, in mature cases, more like a marriage than a contract.
If you've never thought about editing before, the easiest way to start seeing it is to watch a film twice, the second time muting the dialogue and noticing the cuts. The Copacabana sequence in Goodfellas, the Omaha Beach landing in Saving Private Ryan, the falling van sequence in Inception, the basement sequence in Zodiac — pick one. Watch it twice.
For longer-form reading, Walter Murch's In the Blink of an Eye is short and excellent. Steven Bernstein's Film Production is the standard textbook. The Cutting Edge: The Magic of Movie Editing (2004) is the best documentary on the subject.