Parentheticals, Extensions, and When to Use Them (V.O. vs O.S.)

A parenthetical is a short instruction in parentheses on its own line between the character name and their dialogue. An extension is an abbreviation in parentheses on the same line as the character name, telling us how we are hearing that character. They sit in different places and do completely different jobs.

MARIA                          <- character name
(barely audible)               <- parenthetical
I heard you the first time.

MARIA (V.O.)                   <- extension
I heard you the first time.

The parenthetical is a note about performance. The extension is a fact about where the voice is coming from, and it has real consequences downstream.

V.O. and O.S.: the distinction that matters

This is the one people get wrong, and it is worth getting right because these two mean genuinely different things to the people who have to shoot the film.

(O.S.) means off screen. The character is physically present in the scene, in that space, at that moment. We simply are not pointing the camera at them. Someone calling from the next room. A person speaking from behind the camera in a two-hander. A voice from up the stairs.

(V.O.) means voice over. The character's voice is laid over the scene from outside its physical space. Narration. Inner thoughts. A letter being read. A recording. The other end of a phone call when we are not cutting to them.

The test: could a microphone in the room have recorded it? If yes, it is O.S. If the voice is arriving from another time, another place, or the inside of someone's head, it is V.O.

(O.C.) means off camera and is the same idea as O.S. It appears mostly in multi-camera television. Pick one convention and use it consistently.

Phone calls

Phone calls are where V.O. and O.S. get tangled, so here is the working practice.

If we only ever stay with one side of the call, the other person is V.O., because their voice is arriving from somewhere the camera is not:

SARAH
You said Tuesday.

MARK (V.O.)
I said maybe Tuesday.

If we cut back and forth between both locations, use INTERCUT. Establish both spaces first, then declare the intercut, and after that you can simply alternate character names with no extensions at all:

INT. SARAH'S KITCHEN - DAY

Sarah, phone to her ear.

INT. MARK'S CAR - CONTINUOUS

Mark, driving, phone on speaker.

INTERCUT PHONE CONVERSATION

SARAH
You said Tuesday.

MARK
I said maybe Tuesday.

This is cleaner than tagging every line, and it tells the editor exactly what the sequence is. Note that for scheduling purposes these are still two separate scenes in two separate locations, likely shot on different days.

(CONT'D)

(CONT'D) after a character name means the same character is still speaking after an interruption, usually an action line:

MARK
Fine.

He picks up his coat. Stops at the door.

MARK (CONT'D)
It's not fine.

Most screenwriting software adds these automatically. They are a convenience for the reader, they are not obligatory, and nobody will reject a script over them. Do not type them by hand and then edit the script, because stale (CONT'D)s left behind after a rewrite look worse than none at all.

The related (MORE) and (CONT'D) pair appears when a speech breaks across a page. That is a purely mechanical page-layout thing and your software handles it.

Parentheticals: use sparingly

A parenthetical tells an actor how to say a line. The default position is that you should not need one, because the line and the situation should carry the reading.

Legitimate uses:

• The line would genuinely be misread otherwise. Sincere or sarcastic, and the context does not settle it.

(not sarcastic)

• Who the line is directed at, when there are three people in the room and it matters.

(to Maria)

• Volume or delivery that changes the meaning.

(whispering)

• Language.

(in Portuguese; subtitled)

• A very short beat inside a speech.

(beat)

Illegitimate uses, in rough order of how often they appear:

• Naming the emotion. (angrily), (sadly), (happily). This is the big one. It tells an actor the result you want rather than the situation that produces it, and experienced actors ignore it, sometimes with irritation.
• Restating the line. (dismissive) before a dismissive line adds nothing.
• Describing an action. (picking up the glass) belongs in an action line, where the props department will actually see it.
• Directing the whole performance. A parenthetical is not the place to explain the character's psychology.

If a parenthetical is doing important work, the line above it usually is not.

The (beat) deserves a note of its own. It is useful and it is overused. A page with four (beat)s on it has usually substituted a formatting mark for writing the pause into the scene. Occasionally a beat is exactly right; frequently the better version is an action line showing what happens during the silence.

Format specifics

• Parentheticals are indented further than the character name, sit on their own line, start lowercase, and take no closing punctuation. (quietly) and not (Quietly.).
• Extensions go on the character name line, in caps, in parentheses, after a space.
• Keep parentheticals to a few words. If it runs to a full line, it wants to be an action line.
• Never open a scene's first speech with a parenthetical explaining what the scene is about.

A quick audit

Search your draft for open parentheses and count them.

For a feature, more than about thirty parentheticals is worth examining, and more than sixty almost certainly means you are directing performances on the page. Go through them and sort each into: the line is ambiguous without this, or I did not trust the line.

Delete the second category. Then reread those lines, because a line you did not trust is a line worth rewriting.

Next

We have covered the elements inside a scene. Next: the marks between scenes, and why CUT TO is on almost every page of amateur scripts and almost none of the professional ones.