Leak_Technologies/VideoTools
Leak_Technologies/VideoTools
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    Release v0.1.0-dev17 - Thumbnail Generation Module

    stu released this 2025-12-13 23:39:35 +00:00 | 326 commits to master since this release

    New Module: Thumbnails

    • Generate individual thumbnails or contact sheets from videos
    • FFmpeg-based frame extraction with timestamp overlays
    • Configurable thumbnail count, size, and grid layout
    • Auto-open generated files in system file browser

    Features:

    • Thumbnail Count: 3-50 thumbnails (default: 24 for contact sheets)
    • Thumbnail Width: 160-640 pixels (maintains aspect ratio)
    • Contact Sheet Mode: Generate single image with grid layout
    • Grid Configuration: 2-12 columns and rows (default: 4x6)
    • Timestamp Overlay: Automatic timestamp burned into each thumbnail
    • Metadata Header: Video information header on contact sheets
    • Quality Settings: JPEG (85% quality) or PNG lossless
    • Even Distribution: Thumbnails evenly spaced across video duration

    Technical Implementation:

    • internal/thumbnail package with comprehensive generator
    • FFprobe integration for video metadata
    • FFmpeg tile filter for contact sheets
    • Select filter for precise frame extraction
    • Evenly distributed timestamps using: step = duration / (count + 1)
    • Temporary directory management
    • Cross-platform file browser integration

    UI Features:

    • Clean settings interface with real-time controls
    • Slider controls: Count (3-50), Width (160-640px)
    • Contact sheet toggle with dynamic grid controls
    • Grid sliders: Columns/Rows (2-12)
    • Progress feedback during generation
    • Success dialog with "Open Folder" option

    Integration:

    • Orange "Thumb" tile in Screenshots category
    • Proper module routing and state management
    • Fyne threading compliance
    • Consistent UI patterns with other modules

    Use Cases:

    • Individual Screenshots: Generate 20-30 evenly-spaced frames for preview
    • Contact Sheets: Create video overview with metadata (filename, size, FPS, resolution, codecs, duration)
    • Video Cataloging: Quick visual reference for video library

    Module fully implemented with 20-30 thumbnail range optimized for typical use. Ready for testing.

    🤖 Generated with Claude Code

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