Timelapse por Décadas com Extent (1960 → 2000) — 30s em 5 cenas de 6s

Goal: create a 30-second timelapse video by using the extent option to switch between five decades: 1960, 1970, 1980, 1990, and 2000. Each decade must occupy exactly 6 seconds, totaling 30 seconds. Output should include five scene prompts (one per decade) and a master prompt that enforces the exact schedule and seamless transitions between decades. Use a single 16:9 canvas at 1920x1080 resolution and 30fps. For each scene, provide explicit prompts with the following components: 

- Scene label and decade: e.g., Scene 1960s (1960) / Scene 1970s (1970) / Scene 1980s (1980) / Scene 1990s (1990) / Scene 2000s (2000).
- Visual setting: city street or skyline, era-appropriate architecture, vehicles, signage, and fashion.
- Lighting and color: era-appropriate lighting and color grading (e.g., warm filmic tone for 1960s, saturated neon/contrast for 1980s, cooler tones for late 1990s).
- Camera motion: subtle movement within the scene (pan, tilt, dolly) to convey motion without destabilizing the 6-second window.
- Overlay: a year label (e.g., “1960”) and optional timeless caption.
- Audio vibe (optional): suggest ambient sound or music style that suits the decade.
- Extent cues: clear instruction to switch to the next decade exactly at 6s, 12s, 18s, and 24s using the extent parameter; ensure transitions are smooth (crossfade or era-appropriate transition).
- Constraints: maintain continuity across scenes, avoid abrupt visual jumps, and keep each scene visually cohesive with its decade.

Master prompt: combine all five scene prompts into a single timeline of 30 seconds, with extent-based switching at the exact boundaries (6s, 12s, 18s, 24s). Specify that the generator should honor the exact timing, apply a consistent frame rate, and output a stitched 30-second video. If the extent switch fails, provide a fallback loop or individual 6-second clips that can be concatenated manually.

Example structure for Scene 1960:
- Decade: 1960s
- Visual: bustling city street, vintage cars, chrome storefronts, mid-century signage, pedestrians in 1960s fashion
- Lighting/Color: warm, filmic tones with slight grain
- Camera: gentle horizontal pan along storefronts
- Overlay: “1960”
- Audio: subtle era-appropriate ambience (traffic, distant radio)
- Extent instruction: transition to 1970s at 6s

Repeat similarly for Scene 1970, 1980, 1990, and 2000 with decade-specific visuals and cues.

Deliverables: a clean master prompt plus five distinct scene prompts ready to feed into the generation tool. Do not include meta commentary beyond the prompts themselves.