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Thumbnail Prompting

Gramps edited this page 2025-08-05 22:07:44 -07:00

Table of Contents

• 🖼️ Thumbnail Prompting
• 🧠 Prompt Rules
• 🖼️ Default Prompt Composition
• 📁 Output Rules
• 🧪 Prompt Generator Source

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🖼️ Thumbnail Prompting

This page documents how thumbnail prompts are constructed, formatted, and passed to the generation engine to produce YouTube-ready thumbnails.

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🧠 Prompt Rules

Thumbnail prompts are built from:

• The clip category (montage, hit, miss, etc.)
• The tone and style keywords derived from tags or folder context
• The clip date, rendered in Mon DD YYYY format
• A visual signature (always includes the “brand llama”)

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🖼️ Default Prompt Composition

For standard highlight thumbnails:

1280×720 canvas, Fortnite branding, vibrant color

- Top left: YouTube logo
- Center left (stacked): “FORTNITE” / “LIVE STREAM!” / “with Gramps!”
- Bottom right: Date (“Aug 03 2025”)
- Right side: Stylized purple llama (brand mascot)

Use Fortnite-style font and colors: #f7338f (main), #10abba (shadow), #1c0c38 (stroke)

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📁 Output Rules

• File size must be < 2MB
• Vertical and horizontal thumbnails may vary in layout
• If output fails validation (e.g. wrong size or file type), regenerate silently

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🧪 Prompt Generator Source

See: modules/thumbnail_utils.py → generate_thumbnail_prompt()

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Next page: YouTube Upload Logic