CROWD — Background Extras

Coordinate Category: Secondary Choreography & Environmental Bystanders
Alias: [BG]
Status: Tier 2 Specialized Directorial Coordinate

1. Purpose & Functional Role

[CROWD] (or [BG]) commands the choreography of background extras, ambient pedestrians, passing traffic, audience reactions, and secondary world movement, maintaining strict separation from primary named character actions.

2. Orthogonality & Scoping Boundary

  • In [ACT]: Physical performance, anatomy, and blocking of the primary named subjects (e.g., John, Samira, Robert).
  • In [CROWD]: Collective behavior, trajectory, and panic/calm state of secondary/unnamed extras (e.g., commuters, tavern patrons, marketplace vendors).
  • In [BLOCK]: Spatial frame staging (e.g., FG, MG, BG coordinates).

3. Formatting & Syntax Rules

  • Header / Tag: [CROWD] (or [BG]) on its own Sub-State in the Macro-State -> chain.
  • Description Style: Describe collective direction, density, movement velocity, and emotional tenor of background elements:
    • [CROWD] Commuters on platform scatter in sudden panic toward frame-R exits
    • [CROWD] Tavern patrons in BG freeze mid-drink, turning heads toward center table
    • [CROWD] Busy street crowd flows continuously in soft motion-blur behind John
    • [CROWD] Passing vintage automobiles cross midground from screen-L to screen-R

4. Placement & Chaining in Macro-States

[CROWD] isolates secondary action to prevent generative models from morphing background extras into primary characters:

  • Foreground Chase with Background Chaos: [CAM] MS, tracking John frame-C -> [ACT] John sprints forward, ducking low -> [CROWD] marketplace shoppers in BG scramble outward, overturning wooden crates -> [AUDIO] shouting and crashing wood
  • Tension & Atmospheric Stillness: [CAM 01] MCU on Robert -> [ACT] Robert cocks the pistol O.S. -> [CROWD] lively ballroom dancers in BG instantly halt, murmuring into dead silence -> [AUDIO] sharp collective intake of breath
  • Secondary Vehicle / Urban Traffic: [CAM] MS, low-angle -> [ACT] Samira stands motionless on sidewalk -> [CROWD] yellow taxicabs streak past in foreground motion blur -> [AUDIO] wet tire hum and horn blast
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