This commit implements the highest priority dev13 feature: automatic
cropdetect with manual override capability.
Features:
- Added detectCrop() function that analyzes 10 seconds of video
- Samples from middle of video for stable detection
- Parses FFmpeg cropdetect output using regex
- Shows estimated file size reduction percentage (15-30% typical)
- User confirmation dialog before applying crop values
UI Changes:
- Added "Auto-Detect Black Bars" checkbox in Advanced mode
- Added "Detect Crop" button to trigger analysis
- Button shows "Detecting..." status during analysis
- Runs detection in background to avoid blocking UI
- Dialog shows before/after dimensions and savings estimate
Implementation:
- Added CropWidth, CropHeight, CropX, CropY to convertConfig
- Crop filter applied before scaling for best results
- Works in both direct convert and queue job execution
- Proper error handling for videos without black bars
- Defaults to center crop if X/Y offsets not specified
Technical Details:
- Uses FFmpeg cropdetect filter with threshold 24
- Analyzes last detected crop value (most stable)
- 30-second timeout for detection process
- Regex pattern: crop=(\d+):(\d+):(\d+):(\d+)
- Calculates pixel reduction for savings estimate
Benefits:
- 15-30% file size reduction with zero quality loss
- Automatic detection eliminates manual measurement
- Confirmation dialog prevents accidental crops
- Clear visual feedback during detection
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Major refactoring to improve code organization and enhance UI:
Architecture:
- Split monolithic main.go into modular internal/ package structure
- Created internal/logging for centralized logging system
- Created internal/modules for module handler functions
- Created internal/ui for UI components and layouts
- Created internal/utils for shared utility functions
UI Enhancements:
- Implemented rainbow gradient across 8 module buttons (violet→red)
- Increased module button text size to 20 for better readability
- Fixed text centering on module tiles
- Converted Simple/Advanced mode toggle to tabs to save vertical space
- Added vertical scrollbars to prevent UI overflow
- Added metadata copy button (📋) to copy all metadata to clipboard
Video Processing:
- Fixed aspect ratio conversion to default to center-crop behavior
- Added 6 aspect handling modes: Auto, Crop, Letterbox, Pillarbox, Blur Fill, Stretch
- Fixed blur fill to maintain source resolution with padding (no scaling)
- Ensured all FFmpeg filters produce even-numbered dimensions for H.264
Known Issues:
- WMV files still produce FFmpeg error 234 during aspect conversions
(requires codec-specific handling in future update)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
