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sonichisonichi/sutando/skills/image-generation/SKILL.md

image-generation

Skill396 starsChanged 6 months agoMITView on GitHub

Generate and edit images using Gemini Flash Image, and generate videos using Veo. Supports text-to-image, image editing, text-to-video, and image-to-video.

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The file

We split this skill into the rules it gives an agent

1 rule. 0 are common, 1 is distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 54 edited versions we read keep these.

  • 1

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Hero/banner creation: Create branded images with text overlays

    line 14

“Common” is measured: kept by at least 6 in 10 of the 54 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Media Generation

Generate images and videos using Gemini APIs.

Image Generation (Gemini Flash Image)

  • Text-to-image: Generate images from text descriptions
  • Image editing: Modify existing images with natural language
  • Background replacement: Change or enhance backgrounds
  • Hero/banner creation: Create branded images with text overlays
  • Style transfer: Apply artistic styles to photos

Video Generation (Veo)

  • Text-to-video: Generate video clips from text prompts
  • Image-to-video: Animate a reference image with a prompt

When to Use

  • "Generate a hero image for my project"
  • "Create a short video of a sunset timelapse"
  • "Edit this photo to remove the background"
  • "Make a video from this image"
  • "Generate a logo with a dark theme"

Usage

# Text-to-image
python3 "$SKILL_DIR/scripts/generate.py" --prompt "A futuristic city skyline at night"

# Edit an existing image
python3 "$SKILL_DIR/scripts/generate.py" --input photo.jpg --prompt "Add dramatic clouds"

# Specify output path
python3 "$SKILL_DIR/scripts/generate.py" --prompt "A cute robot mascot" --output mascot.png

# Text-to-video
python3 "$SKILL_DIR/scripts/generate.py" --video --prompt "A timelapse of a city at sunset"

# Video with portrait aspect ratio
python3 "$SKILL_DIR/scripts/generate.py" --video --prompt "Ocean waves" --aspect 9:16

# Image-to-video (animate a reference image)
python3 "$SKILL_DIR/scripts/generate.py" --video --input scene.jpg --prompt "Animate this scene with gentle wind"

# Specify output
python3 "$SKILL_DIR/scripts/generate.py" --video --prompt "Dancing robot" --output robot.mp4

Options

FlagDescriptionDefault
--promptText prompt describing what to generate(required)
--inputInput image path(s) for editing/referenceNone
--outputOutput file pathgenerated-{timestamp}.png or .mp4
--modelGemini model to usegemini-2.5-flash-image / veo-3.1-generate-preview
--videoGenerate video instead of imagefalse
--aspectVideo aspect ratio16:9
--qualityJPEG quality (1-100, images only)90

Requirements

  • google-genai Python package (pip3 install google-genai)
  • GEMINI_API_KEY in .env or environment
  • Pillow (pip3 install Pillow) — for image generation/editing

Notes

  • Video generation takes 1-3 minutes (polling every 10s)
  • Generated videos are stored on Google servers for 2 days
  • Gemini may refuse some prompts (people's faces, copyrighted characters, etc.)
  • For image editing, be explicit: "keep the subject unchanged, only modify the background"
  • Image output format inferred from extension (.jpg, .png, .webp)
  • Maximum input image size: ~20MB

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