In the world of professional filmmaking, scene numbers are the essential roadmap that ensures every department—from camera to catering—is working from the same information. Without them, you are forced to rely on page numbers, which are not specific enough for the rigors of a shoot.
Step 1: Identify Your Slug Lines
Every new scene in a screenplay is typically delineated by a slug line. A slug line (or scene header) tells the reader three things:
- INT. or EXT. (Interior or Exterior)
- LOCATION (e.g., JAKE'S LIVING ROOM)
- TIME OF DAY (e.g., DAY or NIGHT)
As you read through your script, look for these headers. Occasionally, the action may move to a new room or location without a formal slug line; in these cases, it is part of the numbering process to determine if a new scene number is required.
Step 2: Assign Sequential Numbers
Starting from the first scene of the script, assign a number to each slug line in sequential order (1, 2, 3, etc.). These numbers will stay with these scenes throughout the production, even if the script is edited.
Step 3: Handle New Scenes (A and B Scenes)
If a new scene is added after the script has already been numbered, do not re-number the entire script. Instead, use "A" and "B" designations. For example, if a new scene is added between Scene 47 and Scene 48, it becomes Scene 47A. If another is added, it becomes Scene 47B.
Step 4: Manage Deleted Scenes
If a scene is deleted, the number remains in the schedule but is marked as "OMITTED." This prevents the numbers from shifting and causing confusion among departments that have already begun their prep based on the original numbering.
Why Scene Numbering Matters
Scene numbers allow the 1st AD to build the shooting schedule and the production office to generate call sheets. They are also critical for the script supervisor to track continuity and for the editor to organize the raw footage in post-production.