Beats
A beat is the smallest unit of story. Not a scene, not a sequence — a single moment of change. Every beat shifts something: an emotion, an objective, a relationship, a piece of information. If nothing changes, it is not a beat — it is filler.
Screenwriters think in beats before they think in scenes. Scenes are containers. Beats are the things that happen inside them.
What makes something a beat
A beat has a before-state and an after-state that are different. The difference can be:
- Emotional — a character goes from calm to frightened, from hopeful to despairing
- Relational — two characters shift from adversaries to reluctant allies
- Informational — a character (or the audience) learns something that changes how they understand the story
- Decisional — a character commits to an action, crossing a point of no return
- Physical — something happens in the world that forces a change
The simplest test: what is different at the end of this beat that was not different at the beginning? If the answer is "nothing," cut the beat.
Types of beats
| Beat type | What changes | Example |
|---|---|---|
| Action beat | Physical state of the world | The car explodes. The letter arrives. The door locks. |
| Emotional beat | What a character feels | She reads the letter. Her expression falls. She is no longer safe. |
| Revelation beat | What a character (or the audience) knows | We discover the mentor was the villain all along. |
| Decision beat | What a character chooses | He decides to go back. This is the end of Act 2. |
| Dialogue beat | A line that shifts the relationship between two characters | "I know what you did." — "How long have you known?" |
| Transition beat | A change of location, time, or perspective | The story moves from past to present. We go from her world to his. |
Most beats are small. A single gesture, a look, a line. A scene typically contains 3–8 beats. An act contains many scenes, each full of beats. Feature films typically have 40–60 principal beats.
Beats in ACT3 AI
ACT3 AI represents beats as named story events in the Story Arc view. Each beat:
- Has a title, a description, and an act assignment
- Belongs to one or more scenes
- Can have a type tag (action, revelation, decision, etc.)
- Can be moved, reordered, revised, or regenerated
The AI Calc Engine watches your beats. When you change a beat, it traces the downstream effects — which scenes are affected, which shots might need revision — and flags them for your review.
The beat list
When you import a script or use Expand to Script, ACT3 AI's AI Writer proposes a beat list based on its reading of the story. This beat list is a starting point, not a final answer. Review every beat:
- Are the beats the right size? (One clear change per beat — not two, not zero)
- Are they in the right order?
- Do they build on each other? Each beat should make the next beat possible.
See How to Work with Acts and Beats.
Beats vs. shots
A beat is a story-level concept. A shot is a production-level concept. One beat can require multiple shots. A revelation beat — a character reading a letter — might have four shots: over-the-shoulder reading, close-up on her face changing, insert on the key line of text, wide pull as she processes.
When you set up shots for a scene, you are deciding how to visually execute the beats in that scene. The beat tells you what to show; the shots tell you how to show it.
Writing beats as a screenwriter
In a prose outline, beats are bullet points:
— Marcus arrives at the warehouse and finds it empty. The deal went wrong.
— He finds a phone. One message: "We know where you live."
— He makes a decision: go to the police, or handle it himself.
— He walks to the car. He does not go toward the police station.
Each bullet is one beat. Each one changes something.
In a screenplay, beats live in action lines. You do not label them "BEAT" — they emerge from how you write the action:
INT. WAREHOUSE - NIGHT
Marcus walks in. The floor is clean. The crates are gone.
He stops. Looks around. Nothing.
A phone on the floor. He picks it up. Presses play.
RECORDED VOICE
We know where you live.
He looks at the exit. At the phone. At the exit.
He puts the phone in his pocket. Goes to his car.
Three beats in nine lines of action.
Related
- Work with Acts and Beats — How to add, reorder, and edit beats in ACT3 AI
- Story Arc — The visual narrative structure that organizes your beats
- Plot — How beats build into plot structure
- Scenes — How beats and scenes relate
- Concepts: Beats — Platform reference for the Beats system