J-Cut
Also known as J cut
An edit where the sound of the next shot starts before its picture. Its mirror, the L-cut, lets a shot's sound carry on over the next picture.
In practice
A J-cut is an edit in which the sound from the next shot begins before the picture changes. The audience hears the next scene, a voice, a train, a song, while still looking at the current one, and then the image catches up. Its mirror is the L-cut, in which the sound of a shot continues after the picture has cut to the next one.
The names come from the shape the clips make on an editing timeline. In a J-cut the audio track extends to the left, under the end of the previous clip, forming a J; in an L-cut it extends to the right, forming an L. Together they are called split edits.
Split edits are among the most common cuts in film and television, especially in dialogue. Hearing a character before seeing them, or staying on a listener's face while the speaker keeps talking, makes a conversation flow instead of jumping from face to face.
A J-cut written as a pre-lap
INT. HOSPITAL CORRIDOR - NIGHT
Sam sits alone under flickering lights, still in her coat, holding a paper cup she hasn't touched.
RECEPTIONIST (PRE-LAP)
Grayson and Hale, good morning, how can I help?
INT. LAW OFFICE - RECEPTION - DAY
Bright and calm. The RECEPTIONIST (20s) wears a headset. Behind her, Sam walks in, in the same coat.
Opens as a new Plot project once you sign in or create a free account. Inkwell keeps this copy for 24 hours.
The receptionist's line starts while we are still in the corridor, so the audience hears the new day before seeing it. The screenplay marks this with PRE-LAP, the writer's way of asking for a J-cut. The same coat tells us Sam hasn't been home.
What J-cuts and L-cuts do
Smooth a transition: sound that arrives early, like traffic or music, prepares the audience for a new place, so the visual cut feels natural.
Pull the story forward: a J-cut makes the audience curious about the next scene before it starts, which builds momentum between scenes.
Keep reactions on screen: an L-cut lets a speaker's words continue over the listener's face, so the audience sees the effect of a line as it lands.
Link ideas: a line of dialogue that carries over a cut can comment ironically on the next image.
J-cut and L-cut examples
In a conversation, the editor cuts to the listener while the speaker finishes a sentence (an L-cut), then cuts back as the speaker hears the reply begin off screen (a J-cut). Most dialogue scenes in film and TV use this constantly.
At a scene change, a phone ring, a siren or a teacher's voice starts over the end of the previous scene before the new location appears.
In documentaries and interviews, a subject's voice continues as the picture cuts to the place or object they are describing.
J-cut vs. jump cut and pre-lap
A jump cut is a visual edit that skips forward in time within the same shot, so the subject seems to jump. A J-cut is about sound and picture changing at different moments; the two have nothing in common but the letter.
Pre-lap is the screenplay term for sound or dialogue that begins before its scene. It is how a writer asks for a J-cut. There is no standard screenplay term for an L-cut; writers usually continue the line as voice-over or off screen into the next scene.
How to write a J-cut in a screenplay
Use PRE-LAP as the character extension for dialogue that starts before its scene: RECEPTIONIST (PRE-LAP) at the end of the previous scene, then the new scene heading.
For sound that isn't dialogue, write it in the action at the end of the scene: "The sound of a school bell rings over this." Then cut to the school.
For an L-cut, let the line continue with (V.O.) or (O.S.) under the next scene heading, or add "(CONT'D)" so the reader knows it is the same speech.
Use them where they carry meaning. Plot keeps PRE-LAP, V.O. and O.S. as character extensions, so they format correctly and the reader sees exactly when the sound belongs to the next scene.
Common questions
What is a J-cut?
A J-cut is an edit in which the audio of the next shot starts before its picture appears, so the audience hears the next scene while still seeing the current one.
What is an L-cut?
An L-cut is the reverse of a J-cut: the audio of the current shot continues after the picture has cut to the next shot, often to show a listener's reaction.
Why is it called a J-cut?
On an editing timeline, the audio clip extends left under the previous shot, so the video and audio tracks together form the shape of a J. An L-cut extends right and forms an L.
Is a J-cut the same as a pre-lap?
They describe the same effect from different sides. A pre-lap is the screenplay's instruction for early sound or dialogue; the J-cut is how the editor creates it.
What is the difference between a J-cut and a jump cut?
A J-cut overlaps sound and picture across a cut. A jump cut removes a piece of time from a continuous shot, so the image visibly jumps.