video-commercial

name: video-commercial description: Generate 30-second video commercials from a concept. Creates storyboard, generates scene images, adds narration via ElevenLabs, assembles final video. Use when asked to create commercials, promo videos, video ads, or short marketing videos.

Video Commercial Generator

Create short video commercials (~30 seconds) from a concept through a multi-phase pipeline.

Workflow

Phase 1: Concept → Storyboard

Parse the concept into 5-6 scenes. Create storyboard.json:

{
  "title": "Project Name",
  "concept": "Original concept text",
  "duration": 30,
  "scenes": [
    {
      "id": 1,
      "duration": 5,
      "visual": "Detailed image generation prompt",
      "motion": "zoom-in|zoom-out|pan-left|pan-right|static",
      "narration": "Voiceover text for this scene",
      "overlay": "Optional text overlay"
    }
  ]
}

Phase 2: Generate Images

For each scene, generate an image using available image tools (nano-banana-pro or openai-image-gen).

Save to: scenes/scene-{id}.png Save prompt metadata to: scenes/scene-{id}.json

Phase 3: Generate Narration

Use ElevenLabs (sag skill) to generate voiceover from combined narration text.

Save to: audio/narration.mp3

Phase 4: Create Video Clips

Use ffmpeg to create video clips from images with motion effects:

# Zoom in effect (5 seconds)
ffmpeg -loop 1 -i scene-01.png -vf "scale=8000:-1,zoompan=z='min(zoom+0.0015,1.5)':d=150:s=1920x1080" -t 5 -pix_fmt yuv420p clip-01.mp4

# Static with slight zoom
ffmpeg -loop 1 -i scene-01.png -vf "scale=2000:-1,zoompan=z='1.1':d=150:s=1920x1080" -t 5 -pix_fmt yuv420p clip-01.mp4

Phase 5: Assemble Final Video

1. Concatenate clips
2. Add narration audio
3. Add background music (optional)
4. Add text overlays
5. Export final video

# Concat clips
ffmpeg -f concat -i clips.txt -c copy combined.mp4

# Add audio
ffmpeg -i combined.mp4 -i narration.mp3 -c:v copy -c:a aac -map 0:v -map 1:a final.mp4

Project Structure

projects/video-commercial/{project-slug}/
├── concept.md           # Original concept
├── storyboard.json      # Scene breakdown
├── scenes/
│   ├── scene-01.png     # Generated images
│   ├── scene-01.json    # Prompt + metadata
│   └── ...
├── audio/
│   ├── narration.mp3    # ElevenLabs voiceover
│   └── music.mp3        # Background (optional)
├── clips/
│   ├── clip-01.mp4      # Individual scene videos
│   └── ...
├── output/
│   └── final.mp4        # Assembled video
└── review.md            # Review notes + iterations

Review Process

After each phase, update review.md with:

• What was generated
• User feedback
• Scenes to regenerate
• Approved scenes (mark with ✓)

Allow regeneration of individual scenes without redoing entire project.

Commands Reference

Notes

• Projects stored in workspace: projects/video-commercial/
• Image aspect ratio: 16:9 (1920x1080)
• Default scene duration: 5 seconds
• Narration voice: Configure in project or use default