Action Lines: Writing What the Camera Sees

Action lines are the prose paragraphs that describe what happens on screen. They are written in the present tense, in the third person, and they contain only things an audience could see or hear. That last constraint is the whole discipline, and it is the one that separates a script that reads like a film from a script that reads like a novel with the dialogue pulled out.

Sarah opens the fridge. Empty, except for a jar of
mustard and a birthday candle.

She closes it. Opens it again. Same.

Nothing there is invisible. Everything is a shot.

The filmable test

Take any line of your action and ask: could I point a camera at this?

• "He walks to the window." Yes.
• "He remembers the summer his father left." No.
• "She is a woman who has never been told no." No.
• "She orders for both of them without asking." Yes, and it says the same thing.

The second and third examples are not crimes, exactly. Some very good writers break this rule deliberately and briefly to establish a tone. But when a script is full of them, it means the writer has an idea of the film in their head that they have not yet converted into anything a crew could shoot, and every department reading it will have to guess.

The useful thing about the test is that failing it is almost always a prompt, not a problem. "He remembers the summer his father left" is a note to yourself that you have not yet found the shot. The shot might be him touching a scar, or not touching one. Finding it is the writing.

Present tense, always

The film happens now, as you read it. "Sarah opens the fridge", never "Sarah opened" and never "Sarah is opening".

Present continuous creeps in and drains energy from a page. Compare "He is walking down the corridor, checking his phone" with "He walks the corridor, checking his phone." The second is shorter and more immediate, and the difference compounds across ninety pages.

Drop "we see"

"We see Sarah open the fridge" is three words longer and no clearer. The audience sees everything in the script; that is what the script is. The phrase adds a narrator to a medium that does not have one.

There is a narrow exception. Occasionally "we" is doing genuine work, usually when the point is that the camera knows something the character does not, or when a reveal depends on the order of perception. Used once in a screenplay for a specific effect, it lands. Used forty times it is a verbal tic.

The same applies to "the camera pans", "we push in", and "ANGLE ON". Directing on the page is generally discouraged in a spec script, not because it is forbidden, but because it is usually a less efficient way to achieve what you want. You control what the reader looks at by controlling what you mention and in what order, which works better than instructing them.

Sarah opens the fridge.

A jar of mustard. A birthday candle. Nothing else.

No camera direction, and the reader still got a wide and then a close.

Introducing characters

The first time a character appears, their name goes in CAPS, once, followed by whatever the audience can tell about them.

MARIA (40s), still in scrubs, carrying a bag of shopping
that is clearly too heavy.

After that first appearance, normal case forever. The caps exist so that anyone breaking the script down can scan for entrances and know who is in the scene.

Keep the description to what is visible and what matters. Age range is standard and useful for casting. Occupation, if it shows. A detail that tells us something. What does not belong is biography ("MARIA, who has raised three children alone since the accident"), interior life, or a physical description so specific that it narrows casting for no reason. Every unnecessary adjective in a character introduction is a shortlist you have shortened.

Paragraph length is pacing

This is the part most people never think about, and it is the most powerful tool in the whole chapter.

A reader's eye moves fast down short paragraphs and slows down through long ones. That rhythm is felt as pace, and pace is felt as tension. A four-line block reads as considered. A one-line block reads as a beat.

The door handle turns.

Nothing.

It turns again.

Three paragraphs, six words, and the page itself is nervous. Write the same content as one paragraph and it evaporates.

The working guideline is that action paragraphs should be one to four lines, and rarely more. A block longer than five or six lines is skimmed, which means whatever you buried in the middle of it did not reach the reader.

White space on the page is not empty. It is the film breathing.

Sound

Sound is filmable, so it belongs in action. Many writers put significant sounds in caps:

A CRASH from the kitchen.

This is a convention rather than a rule, and it varies by writer. What matters is that you notice sound at all. Most amateur scripts are silent films with dialogue, and a well-placed offscreen sound is one of the cheapest ways to make a scene feel three-dimensional.

Be consistent with your own convention throughout the script, since inconsistency reads as carelessness.

Things that quietly weaken action lines

• Adverbs doing the work. "He closes the door angrily" is weaker than a door that slams, and much weaker than a door closed very softly by someone who is furious.
• Stage directions for actors. "She looks sad" is a note to an actor about a result. What she does is yours; how she feels is theirs.
• Naming the emotion. If you have to write "the tension is unbearable", it is bearable.
• Describing what does not happen. "She does not answer" is often good. "She does not pick up the phone, and she does not look at the letter either" is a list of absences.
• Every character's clothing, every time. Wardrobe reads the script and will ask. Specify when it matters to the story and leave the rest.
• Novelistic asides. The wry parenthetical observation, the joke to the reader. One or two, in a comedy, can set a voice. Sustained across a script it becomes a different document.

Voice is allowed

None of the above means action lines should be flat. Screenwriters have distinctive prose voices and the good ones are a pleasure to read.

The constraint is that voice has to be built out of filmable material: word choice, rhythm, what you choose to notice, what you refuse to explain. That is a narrower toolkit than a novelist has and it makes for better films, because everything on the page can actually be photographed.

The test of a strong action line is not that it is beautiful. It is that a cinematographer, a production designer, and an editor would all read it and see the same thing.

Next

Action lines cover what the camera sees. Next: what the microphone hears, and why real speech and good screen dialogue are not the same thing.