Popiai-skill/video-creation/mv-creator/references/background-design-example-en.md

Background Design Format Example

Below is the standard format for a single background's {bg_name}/design.md. Each background has its own directory and file.

# Desert Highway

## Scene Description

- Environment type: Outdoor / Open terrain
- Terrain/Space: Straight two-lane highway stretching to the distant horizon, flat sandy desert on both sides
- Palette/Atmosphere: Warm yellow desert base, golden hour sunlight, purple-red horizon
- Key elements: Road surface cracks and heat haze, distant red rock mesa silhouettes, dried grass and fallen road signs on the shoulder
- Weather/Time: Clear and cloudless, around dusk

## Scene List

Scene 1 (Dawn Departure), Scene 2 (Highway Solitude), Scene 7 (Looking Back at the End)

## Image Settings

Prompt:
  A long straight desert highway stretching to the horizon, cracked asphalt
  with heat haze, flat sandy terrain on both sides, distant red rock mesas,
  dried grass and a tilted road sign on the shoulder. Golden hour warm light,
  purple-red sky at the horizon. Cinematic, 35mm film, warm amber tones,
  wide establishing shot, no people.
  single scene, no split screen, no multiple panels, no collage.

Model: nano_banana_2
Reference: style_cache/cinematic/01_highway.png

## Candidates

- candidate_01.jpg — nano_banana_2, ultra-wide horizon stretch
- candidate_02.jpg — nano_banana_2, low angle road close-up
- candidate_03.jpg — nano_banana_2, dusk backlit panorama

## Selected

selected.jpg (Candidate 01)

Format Notes

• H1 # for background name
• H2 ## for each section, must include these 5 sections:
  • ## Scene Description — itemized list: environment type, terrain/space, palette/atmosphere, key elements, weather/time
  • ## Scene List — which scenes this background appears in (extracted from script.md)
  • ## Image Settings — contains three sub-fields:
    • Prompt: — English, combining scene description with art style keywords, must include no people
    • Model: — image generation model name
    • Reference: — art style reference image path (relative to theme directory)
  • ## Candidates — all generated candidate image paths (relative to background directory), with model and composition notes
  • ## Selected — final selected image path (chosen by user in preview page)
• Images stored in the background's directory (candidate_*.jpg, selected.jpg)
• Before user selection, ## Selected section is left empty
• Aspect ratio: always 16:9 widescreen (aspect_ratio: "16:9") to showcase full scene

File Organization

./.mv/{song_name}/{theme}/
  backgrounds/
    {bg_name_1}/
      design.md            # Background design document
      candidate_01.jpg     # Candidate images
      candidate_02.jpg
      selected.jpg         # Final selected image
    {bg_name_2}/
      design.md
      candidate_01.jpg
      selected.jpg