V.O. Meaning in a Screenplay: Voice Over Format and Examples

V.O. means voice over. Written as (V.O.) after the character cue, it marks dialogue the audience hears from a source outside the scene: a narrator, a phone caller, a character's thoughts, a recording or a letter being read. If the speaker is present but out of shot, the tag is (O.S.) instead.

Updated 2026-09-22 · About 7 sections · 5 answered questions

What does V.O. mean in a screenplay?

V.O. stands for voice over. It is a character extension, the tag in parentheses after a character's name, and it tells the reader that the voice is laid over the picture rather than recorded in the space we are looking at. The speaker is not in the scene. They may be in another place, another time, inside the listener's head or on the other end of a phone.

EXT. QUARRY LAKE - DAY

Two boys on a rock ledge, forty feet above black water.

                    ADULT SAM (V.O.)
          The summer I turned twelve, my brother
          taught me that a dare is just a question
          you're afraid to answer.

The smaller boy jumps.

The voice belongs to a man decades away from the scene. Nobody on the ledge hears him. That is the definition: (V.O.) is for any voice the characters in the scene cannot hear as a live sound in the room, with one exception covered below (phone and radio voices, which the listener does hear but which still come from outside the scene).

The format is fixed. The extension goes on the cue line, one space after the name, capitals, periods, parentheses. The dialogue underneath sits at the normal dialogue margin. Nothing about the block changes except the tag; the dialogue formatting guide covers the block itself.

V.O. vs O.S.: which one is it?

The two tags get confused because both describe a voice with no face on screen. They describe different things and a reader will notice the swap.

Question	`(V.O.)`	`(O.S.)`
Is the speaker physically in the scene?	No.	Yes, just out of shot.
Could the camera pan and find them?	No.	Yes.
Do the other characters hear it?	Not as room sound. (Phone voices are heard through the device.)	Yes.
Examples	Narrator, phone caller, thoughts, a diary read aloud, a radio host, a dead parent's voice.	Someone in the next room, behind a door, in the back seat, past the edge of frame.

Quick test: if the speaker walked into frame, would the tag simply disappear? Then it was (O.S.). If the speaker cannot walk into frame because they are not there, it is (V.O.). The O.S. meaning article covers the other side, including the television variant (O.C.).

Narration: how to format a voice over narrator

Narration is the classic V.O. Use the character's name as the cue, and if the narrator is an older version of a character we see on screen, say so in the name so the reader never has to guess: ADULT SAM (V.O.) beside SAM, or SAM (V.O.) with a one-line action note the first time it appears.

Introduce a narrator the way you would introduce any character. The first V.O. line often lands over the opening image, before any scene dialogue, and that is fine. What you must not do is describe the voice in action every time (We hear Sam's voice, older now). Say it once; the tag does the rest.

V.O. can run across a cut. Write the speech under the cue, put the new scene heading where the picture changes, and resume with (V.O.) (CONT'D) only if action or another speaker has interrupted. Most software adds the (CONT'D) automatically when a speaker resumes after action, and Zen Writer does, so you write the name and the extension and let the app track continuity.

                    ADULT SAM (V.O.)
          My brother never told anyone what
          happened that day.

INT. SAM'S BEDROOM - NIGHT

Young Sam, wet hair, stares at the ceiling.

                    ADULT SAM (V.O.)
          Neither did I.

The craft warning: narration that tells the audience what the picture already shows is the fastest way to lose a reader. If the voice over could be cut and nothing would be missed, cut it. The dialogue craft article applies to narration too; subtext is not suspended because the speaker is invisible.

Phone voices, radios, recordings and other device voices

The person on the other end of a phone is not in the scene, so their lines are (V.O.). The character in the room hears them, but through a device, and the sound is mixed as a separate layer. Some writers prefer (FILTERED) for exactly this case, to distinguish a caller from a narrator, and readers accept either. Choose one for the whole script.

INT. SAM'S APARTMENT - NIGHT

Sam, 40s now, picks up on the fourth ring.

                    SAM
          Yeah.

                    RUTH (V.O.)
          They found something at the quarry.

Sam sits down very slowly.

If the call is long and both sides matter, write both locations as their own scenes and mark them INTERCUT, after which neither speaker needs an extension because we are cutting between two rooms. The phone call formatting article lays out that version step by step.

The same tag covers a voicemail, an answering machine, a podcast playing in a car, a pilot over the intercom, a taped confession. A television in the room is a judgement call: a newsreader nobody interacts with can go in action (On the TV, a NEWSREADER lists the missing); a newsreader whose exact words matter gets a cue, NEWSREADER (V.O.) or NEWSREADER (ON TV).

Inner monologue: writing a character's thoughts as V.O.

Thoughts are voice over. The character is in the scene, in shot, and their mouth is closed, so the audience hears what nobody else can. The tag is still (V.O.): the voice does not exist in the room.

INT. INTERVIEW ROOM - DAY

Detective OKAFOR slides a photo across the table. Sam does
not touch it.

                    SAM (V.O.)
          Don't look at the water. Look at her.

                    SAM
          I've never been there.

Two things keep this from becoming a crutch. Use it for a character whose inner voice is a feature of the whole film, not a one-off to explain a single beat. And keep the thought shorter than the spoken line around it, or the scene turns into a radio play with pictures. Readers will not reject a script for a single well-placed thought, but a draft that leans on inner monologue to deliver what the scene should show is a draft that will be sent back.

(PRE-LAP): dialogue that starts before the cut

A pre-lap is a line from the next scene that begins over the end of the current one. The picture cuts a beat after the sound. It is a transition written as an extension:

Sam closes the door on Okafor and leans against it.

                    RUTH (PRE-LAP)
          You should have told me twenty years ago.

INT. RUTH'S KITCHEN - NIGHT

Ruth, arms folded. Sam in the doorway with nothing to say.

(PRE-LAP) replaces (V.O.); you do not write both. Once the cut lands and Ruth is in shot, her next cue is plain RUTH. Use it a handful of times in a feature at most. It is a rhythm device, and rhythm devices stop working when they are everywhere. The transitions guide covers the picture-side equivalents like MATCH CUT and SMASH CUT.

Common V.O. mistakes

V.O. for a character who is simply off screen. Someone shouting from the bathroom is (O.S.).
Writing it VO, V/O or Voice Over. The standard is (V.O.), capitals and periods, in parentheses on the cue line.
Putting it on the parenthetical line. (V.O.) is an extension. The line beneath the cue is for delivery notes only.
Narration that describes the shot. If the picture shows the boy jumping, the narrator does not need to say he jumped.
Thoughts for every character. Inner monologue belongs to one point of view. Give it to a second character and the film has no point of view.
Forgetting the extension on later lines. Every V.O. speech carries the tag. It is not established once and assumed.
Using V.O. to skip writing the scene. Three pages of narration over a montage is usually three scenes you have not written yet.

The free spec script checker flags CONT'D clutter and camera language around your V.O. blocks, and the character line count tool will show you exactly how much of the script a narrator is carrying, which is a number worth knowing before a reader works it out. On a desktop draft, Zen Writer for Mac lists the narrator in the characters panel with everyone else and tracks the (CONT'D) for you. For the rest of the extensions and every other element, start at the screenplay formatting hub.

Frequently asked questions

What does V.O. stand for in a script?

V.O. stands for voice over. Written as (V.O.) after the character's name, it marks dialogue the audience hears from a source outside the scene: a narrator, a caller on the phone, a character's unspoken thoughts, a recording, or a letter being read aloud by its writer.

Is V.O. the same as narration?

Narration is one use of V.O., not the only one. Every narrator is tagged (V.O.), but so is a phone caller, an inner monologue and a voicemail. The tag describes where the sound comes from, which is outside the scene, and narration is simply the most familiar example.

Do I use V.O. or O.S. for a phone call?

V.O., because the caller is not in the scene. Some writers use (FILTERED) instead to show the voice is coming through a device, and that is also accepted. O.S. is wrong for a caller: it means the speaker is physically present but out of shot. If the call is intercut between two locations, neither side needs an extension.

How do I write a character's thoughts in a screenplay?

Use the character's cue with (V.O.) and write the thought as dialogue. The character is on screen with their mouth closed while we hear the line. Keep it short and reserve it for one point-of-view character; thoughts for everyone turn the script into a radio play.

What does PRE-LAP mean in a screenplay?

A pre-lap is dialogue from the next scene that starts before the picture cuts to it. Write the cue as RUTH (PRE-LAP) at the end of the current scene, then the new scene heading, then continue with the plain cue once the character is on screen. It replaces (V.O.) rather than joining it.

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Zen Writer collects every character automatically, narrator included, and adds (CONT'D) when a V.O. speech resumes after action, so continuity is never hand-tracked.

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Screenplay Formatting

V.O. Meaning in a Screenplay: Voice Over Format and Examples

What does V.O. mean in a screenplay?

V.O. vs O.S.: which one is it?

Narration: how to format a voice over narrator

Phone voices, radios, recordings and other device voices

Inner monologue: writing a character's thoughts as V.O.

(PRE-LAP): dialogue that starts before the cut

Common V.O. mistakes

Frequently asked questions

Ready to turn this idea into a screenplay?

Continue reading

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How to Format a Phone Call in a Screenplay (4 Methods)

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