VideoTools/DONE.md

VideoTools - Completed Features

This file tracks completed features, fixes, and milestones.

Version 0.1.0-dev19 (2025-12-18) - Convert Module Cleanup & UX Polish

Features

• ✅ History Sidebar Enhancements

  • Delete button ("×") on each history entry
  • Remove individual entries from history
  • Auto-save and refresh after deletion
  • Clean, unobtrusive button placement

• ✅ Command Preview Improvements

  • Show/Hide button state based on preview visibility
  • Disabled when no video source loaded
  • Displays actual file paths instead of placeholders
  • Real-time live updates as settings change
  • Collapsible to save screen space

• ✅ Format Options Reorganization

  • Grouped by codec family (H.264 → H.265 → AV1 → VP9 → ProRes → MPEG-2)
  • Added descriptive comments for each codec type
  • Improved dropdown readability and navigation
  • Easier to find and compare similar formats

• ✅ Bitrate Mode Clarity

  • Descriptive labels in dropdown:
    • CRF (Constant Rate Factor)
    • CBR (Constant Bitrate)
    • VBR (Variable Bitrate)
    • Target Size (Calculate from file size)
  • Immediate understanding without documentation
  • Preserves internal compatibility with short codes

• ✅ Root Folder Cleanup

  • Moved all documentation .md files to docs/ folder
  • Kept only README.md, TODO.md, DONE.md in root
  • Cleaner project structure
  • Better organization for contributors

Bug Fixes

• ✅ Critical Convert Module Crash Fixed

  • Fixed nil pointer dereference when opening Convert module
  • Corrected widget initialization order
  • bitrateContainer now created after bitratePresetSelect initialized
  • Eliminated "invalid memory address" panic on startup

• ✅ Log Viewer Crash Fixed

  • Fixed "close of closed channel" panic
  • Duplicate close handlers removed
  • Proper dialog cleanup

• ✅ Bitrate Control Improvements

  • CBR: Set bufsize to 2x bitrate for better encoder handling
  • VBR: Increased maxrate cap from 1.5x to 2x target bitrate
  • VBR: Added bufsize at 4x target to enforce caps
  • Prevents runaway bitrates while maintaining quality peaks

Technical Improvements

• ✅ Widget Initialization Order

  • Fixed container creation dependencies
  • All Select widgets initialized before container use
  • Proper nil checking in UI construction

• ✅ Bidirectional Label Mapping

  • Display labels map to internal storage codes
  • Config files remain compatible
  • Clean separation of UI and data layers

Version 0.1.0-dev18 (2025-12-15)

Features

• ✅ Thumbnail Module Enhancements

  • Enhanced metadata display with 3 lines of comprehensive technical data
  • Added 8px padding between thumbnails in contact sheets
  • Increased thumbnail width to 280px for analyzable screenshots (4x8 grid = ~1144x1416)
  • Audio bitrate display alongside audio codec (e.g., "AAC 192kbps")
  • Concise bitrate display (removed "Total:" prefix)
  • Video codec, audio codec, FPS, and overall bitrate shown in metadata
  • Navy blue background (#0B0F1A) for professional appearance

• ✅ Player Module

  • New Player button on main menu (Teal #44FFDD)
  • Access to VT_Player for video playback
  • Video loading and preview integration
  • Module handler for CLI support

• ✅ Filters Module - UI Complete

  • Color correction controls (brightness, contrast, saturation)
  • Enhancement tools (sharpness, denoise)
  • Transform operations (rotation, flip horizontal/vertical)
  • Creative effects (grayscale)
  • Navigation to Upscale module with video transfer
  • Full state management for filter settings

• ✅ Upscale Module - Fully Functional

  • Traditional FFmpeg scaling methods: Lanczos (sharp), Bicubic (smooth), Spline (balanced), Bilinear (fast)
  • Resolution presets: 720p, 1080p, 1440p, 4K, 8K
  • "UPSCALE NOW" button for immediate processing
  • "Add to Queue" button for batch processing
  • Job queue integration with real-time progress tracking
  • AI upscaling detection (Real-ESRGAN) with graceful fallback
  • High quality encoding (libx264, preset slow, CRF 18)
  • Navigation back to Filters module

• ✅ Snippet System Overhaul - Dual Output Modes

  • "Snippet to Default Format" (Checkbox CHECKED - Default):
    • Stream copy mode preserves exact source format, codec, bitrate
    • Zero quality loss - bit-perfect copy of source
    • Outputs to source container (.wmv → .wmv, .avi → .avi, etc.)
    • Fast processing (no re-encoding)
    • Duration: Keyframe-level precision (may vary ±1-2s)
    • Perfect for merge testing without quality changes
  • "Snippet to Output Format" (Checkbox UNCHECKED):
    • Uses configured conversion settings from Convert tab
    • Applies video codec (H.264, H.265, VP9, AV1, etc.)
    • Applies audio codec (AAC, Opus, MP3, FLAC, etc.)
    • Uses encoder preset and CRF quality settings
    • Outputs to selected format (.mp4, .mkv, .webm, etc.)
    • Frame-perfect duration control (exactly configured length)
    • Perfect preview of final conversion output

• ✅ Configurable Snippet Length

  • Adjustable snippet length (5-60 seconds, default: 20)
  • Slider control with real-time display
  • Snippets centered on video midpoint
  • Length persists across video loads

• ✅ Batch Snippet Generation

  • "Generate All Snippets" button for multiple loaded videos
  • Processes all videos with same configured length
  • Consistent timestamp for uniform naming
  • Efficient queue integration
  • Shows confirmation with count of jobs added

• ✅ Smart Job Descriptions

  • Displays snippet length and mode in job queue
  • "10s snippet centred on midpoint (source format)"
  • "20s snippet centred on midpoint (conversion settings)"

Technical Improvements

• ✅ Dual-Mode Snippet System Implementation

  • Default Format mode: Stream copy for bit-perfect source preservation
  • Output Format mode: Full conversion using user's configured settings
  • Automatic container/codec matching based on mode selection
  • Integration with conversion config (video/audio codecs, presets, CRF)
  • Smart extension handling (source format vs. selected output format)

• ✅ Queue/Status UI polish

  • Animated striped progress bars per module color with faster motion for visibility
  • Footer refactor: consistent dark status strip + tinted action bar across modules
  • Status bar tap restored to open Job Queue; full-width clickable strip

• ✅ Snippet progress reporting

  • Live progress from ffmpeg -progress output; 0–100% updates in status bar and queue
  • Error/log capture preserved for snippet jobs

• ✅ Metadata Enhancement System

  • New getDetailedVideoInfo() function using FFprobe
  • Extracts video codec, audio codec, FPS, video bitrate, audio bitrate
  • Multiple ffprobe calls for comprehensive data
  • Graceful fallback to format-level bitrate if stream bitrate unavailable

• ✅ Module Navigation Pattern

  • Bidirectional navigation between Filters and Upscale
  • Video file transfer between modules
  • Filter chain transfer capability (foundation for future)

• ✅ Resolution Parsing System

  • parseResolutionPreset() function for preset strings
  • Maps "1080p (1920x1080)" format to width/height integers
  • Support for custom resolution input (foundation)

• ✅ Upscale Filter Builder

  • buildUpscaleFilter() constructs FFmpeg scale filters
  • Method-specific scaling: lanczos, bicubic, spline, bilinear
  • Filter chain combination support

Bug Fixes

• ✅ Fixed snippet duration issues with dual-mode approach
  • Default Format: Uses stream copy (keyframe-level precision)
  • Output Format: Re-encodes for frame-perfect duration
• ✅ Fixed container/codec mismatch in snippet generation
  • Now properly matches container to codec (MP4 for h264, source format for stream copy)
• ✅ Fixed missing audio bitrate in thumbnail metadata
• ✅ Fixed contact sheet dimensions not accounting for padding
• ✅ Added missing strings import to thumbnail/generator.go
• ✅ Updated snippet UI labels for clarity (Default Format vs Output Format)

Documentation

• ✅ Updated ai-speak.md with comprehensive dev18 documentation
• ✅ Created 24-item testing checklist for dev18
• ✅ Documented all implementation details and technical decisions

Version 0.1.0-dev17 (2025-12-14)

Features

• ✅ Thumbnail Module - Complete Implementation

  • Individual thumbnail generation with customizable count (3-50 thumbnails)
  • Contact sheet generation with metadata headers
  • Customizable grid layouts (2-12 columns, 2-12 rows)
  • Even timestamp distribution across video duration
  • JPEG output with configurable quality (default: 85)
  • Configurable thumbnail width (160-640px for individual, 200px for contact sheets)
  • Saves to {video_directory}/{video_name}_thumbnails/ for easy access
  • DejaVu Sans Mono font matching app styling
  • App background color (#0B0F1A) for contact sheet padding
  • Dynamic total count display for grid layouts

• ✅ Thumbnail UI Integration

  • Video preview window (640x360) in thumbnail module
  • Mode-specific controls (contact sheet: columns/rows, individual: count/width)
  • Dual button system:
    • "GENERATE NOW" - Adds to queue and starts immediately
    • "Add to Queue" - Adds for batch processing
  • "View Results" button with in-app contact sheet viewer (900x700 dialog)
  • "View Queue" button for queue access from thumbnail module
  • Drag-and-drop support for video files (universal across app)
  • Real-time grid total calculation as columns/rows change

• ✅ Job Queue Integration for Thumbnails

  • Background thumbnail generation with progress tracking
  • Job queue support with live progress updates
  • Can queue multiple thumbnail jobs from different videos
  • Progress callback integration for thumbnail extraction
  • Proper context cancellation support

• ✅ Snippet Tool Improvement

  • Changed from re-encoding to stream copy (-c copy)
  • Instant 20-second snippet extraction with zero quality loss
  • No encoding overhead - extracts source streams directly
  • Removed 148 lines of unnecessary encoding logic

Technical Improvements

• ✅ Timestamp-based Frame Selection

  • Fixed frame selection from FPS-dependent (eq(n,frame_num)) to timestamp-based (gte(t,timestamp))
  • Ensures correct thumbnail count regardless of video frame rate
  • Works reliably with VFR (Variable Frame Rate) content
  • Uses setpts=N/TB for proper timestamp reset in contact sheets

• ✅ FFmpeg Filter Optimization

  • Tile filter for grid layouts: tile=COLUMNSxROWS
  • Select filter with timestamp-based frame extraction
  • Pad filter with hex color codes for app background matching
  • Drawtext filter with font specification and positioning
  • Scale filter maintaining aspect ratios

• ✅ Module Architecture

  • Added thumbnail state fields to appState (thumbFile, thumbCount, thumbWidth, thumbContactSheet, thumbColumns, thumbRows, thumbLastOutputPath)
  • Implemented showThumbView() for thumbnail module UI
  • Implemented buildThumbView() for split layout (preview 55%, settings 45%)
  • Implemented executeThumbJob() for job queue integration
  • Universal drag-and-drop handler for all modules

• ✅ Error Handling

  • Disabled timestamp overlay on individual thumbnails to avoid font availability issues
  • Graceful handling of missing output directories
  • Proper error dialogs with context-specific messages
  • Exit status 234 resolution (font-related errors)

Bug Fixes

• ✅ Fixed incorrect thumbnail count in contact sheets (was generating 34 instead of 40 for 5x8 grid)
• ✅ Fixed frame selection FPS assumption (hardcoded 30fps removed)
• ✅ Fixed module visibility (added thumb module to enabled check)
• ✅ Fixed undefined function call (openFileManager → openFolder)
• ✅ Fixed dynamic total count not updating when changing grid dimensions
• ✅ Fixed font-related crash on systems without DejaVu Sans Mono

Version 0.1.0-dev16 (2025-12-14)

Features

• ✅ Interlacing Detection Module - Complete Implementation

  • Automatic interlacing analysis using FFmpeg idet filter
  • Field order detection (TFF - Top Field First, BFF - Bottom Field First)
  • Frame-by-frame analysis with classifications:
    • Progressive frames
    • Top Field First interlaced frames
    • Bottom Field First interlaced frames
    • Undetermined frames
  • Interlaced percentage calculation
  • Status determination: Progressive (<5%), Interlaced (>95%), Mixed Content (5-95%)
  • Confidence levels: High (<5% undetermined), Medium (5-15%), Low (>15%)
  • Quick analyze mode (500 frames) for fast detection
  • Full video analysis option for comprehensive results

• ✅ Deinterlacing Recommendations

  • Automatic deinterlacing recommendations based on analysis
  • Suggested filter selection (yadif for compatibility)
  • Human-readable recommendations
  • SuggestDeinterlace boolean flag for programmatic use

• ✅ Preview Generation

  • Deinterlace preview at specific timestamps
  • Side-by-side comparison (original vs deinterlaced)
  • Uses yadif filter for preview generation
  • Frame extraction with proper scaling

Technical Improvements

• ✅ Detector Implementation

  • Created /internal/interlace/detector.go package
  • NewDetector() constructor accepting ffmpeg and ffprobe paths
  • Analyze() method with configurable sample frame count
  • QuickAnalyze() convenience method for 500-frame sampling
  • Regex-based parsing of idet filter output
  • Multi-frame detection statistics extraction

• ✅ Detection Result Structure

  • Comprehensive DetectionResult type with all metrics
  • String() method for formatted output
  • Percentage calculations for interlaced content
  • Field order determination logic
  • Confidence calculation based on undetermined ratio

• ✅ FFmpeg Integration

  • idet filter integration for interlacing detection
  • Proper stderr pipe handling for filter statistics
  • Context-aware command execution with cancellation support
  • Null output format for analysis-only operations

Documentation

• ✅ Added interlacing detection to module list
• ✅ Documented detection algorithms and thresholds
• ✅ Explained field order types and their implications

Version 0.1.0-dev13 (In Progress - 2025-12-03)

Features

• ✅ Automatic Black Bar Detection and Cropping

  • Detects and removes black bars to reduce file size (15-30% typical reduction)
  • One-click "Detect Crop" button analyzes video using FFmpeg cropdetect
  • Samples 10 seconds from middle of video for stable detection
  • Shows estimated file size reduction percentage before applying
  • User confirmation dialog displays before/after dimensions
  • Manual crop override capability (width, height, X/Y offsets)
  • Applied before scaling for optimal results
  • Works in both direct convert and queue job execution
  • Proper handling for videos without black bars
  • 30-second timeout protection for detection process

• ✅ Frame Rate Conversion UI with Size Estimates

  • Comprehensive frame rate options: Source, 23.976, 24, 25, 29.97, 30, 50, 59.94, 60
  • Intelligent file size reduction estimates (40-50% for 60→30 fps)
  • Real-time hints showing "Converting X → Y fps: ~Z% smaller file"
  • Warning for upscaling attempts with judder notice
  • Automatic calculation based on source and target frame rates
  • Dynamic updates when video or frame rate changes
  • Supports both film (24 fps) and broadcast standards (25/29.97/30)
  • Uses FFmpeg fps filter for frame rate conversion

• ✅ Encoder Preset Descriptions with Speed/Quality Trade-offs

  • Detailed information for all 9 preset options
  • Speed comparisons relative to "slow" and "medium" baselines
  • File size impact percentages for each preset
  • Visual icons indicating speed categories (⚡⏩⚖️🎯🐌)
  • Recommends "slow" as best quality/size ratio
  • Dynamic hint updates when preset changes
  • Helps users make informed encoding time decisions
  • Ranges from ultrafast (~10x faster, ~30% larger) to veryslow (~5x slower, ~15-20% smaller)

• ✅ Compare Module

  • Side-by-side video comparison interface
  • Load two videos and compare detailed metadata
  • Displays format, resolution, codecs, bitrates, frame rate, pixel format
  • Shows color space, color range, GOP size, field order
  • Indicates presence of chapters and metadata
  • Accessible via GUI button (pink color) or CLI: videotools compare <file1> <file2>
  • Added formatBitrate() helper function for consistent bitrate display

• ✅ Target File Size Encoding Mode

  • New "Target Size" bitrate mode in convert module
  • Specify desired output file size (e.g., "25MB", "100MB", "8MB")
  • Automatically calculates required video bitrate based on:
    • Target file size
    • Video duration
    • Audio bitrate
    • Container overhead (3% reserved)
  • Implemented ParseFileSize() to parse size strings (KB, MB, GB)
  • Implemented CalculateBitrateForTargetSize() for bitrate calculation
  • Works in both GUI convert view and job queue execution
  • Minimum bitrate sanity check (100 kbps) to prevent invalid outputs

Technical Improvements

• ✅ Added compare command to CLI help text
• ✅ Consistent "Target Size" naming throughout UI and code
• ✅ Added compareFile1 and compareFile2 to appState for video comparison
• ✅ Module button grid updated with compare button (pink/magenta color)

Version 0.1.0-dev12 (2025-12-02)

Features

• ✅ Automatic hardware encoder detection and selection

  • Prioritizes NVIDIA NVENC > Intel QSV > VA-API > OpenH264
  • Falls back to software encoders (libx264/libx265) if no hardware acceleration available
  • Automatically uses best available encoder without user configuration
  • Significant performance improvement on systems with GPU encoding support

• ✅ iPhone/mobile device compatibility settings

  • H.264 profile selection (baseline, main, high)
  • H.264 level selection (3.0, 3.1, 4.0, 4.1, 5.0, 5.1)
  • Defaults to main profile, level 4.0 for maximum compatibility
  • Ensures videos play on iPhone 4 and newer devices

• ✅ Advanced deinterlacing with dual methods

  • Added bwdif (Bob Weaver) deinterlacing - higher quality than yadif
  • Kept yadif for faster processing when speed is priority
  • Auto-detect interlaced content based on field_order metadata
  • Deinterlace modes: Auto (detect and apply), Force, Off
  • Defaults to bwdif for best quality

• ✅ Audio normalization for compatibility

  • Force stereo (2 channels) output
  • Force 48kHz sample rate
  • Ensures consistent playback across all devices
  • Optional toggle for maximum compatibility mode

• ✅ 10-bit encoding for better compression

  • Changed default pixel format from yuv420p to yuv420p10le
  • Provides 10-20% file size reduction at same visual quality
  • Better handling of color gradients and banding
  • Automatic for all H.264/H.265 conversions

• ✅ Browser desync fix

  • Added -fflags +genpts to regenerate timestamps
  • Added -r flag to enforce constant frame rate (CFR)
  • Fixes "desync after multiple plays" issue in Chromium browsers (Chrome, Edge, Vivaldi)
  • Eliminates gradual audio drift when scrubbing/seeking

• ✅ Extended resolution support

  • Added 8K (4320p) resolution option
  • Supports: 720p, 1080p, 1440p, 4K (2160p), 8K (4320p)
  • Prepared for future VR and ultra-high-resolution content

• ✅ Black bar cropping infrastructure

  • Added AutoCrop configuration option
  • Cropdetect filter support for future auto-detection
  • Foundation for 15-30% file size reduction in dev13

Technical Improvements

• ✅ All new settings propagate to both direct convert and queue processing
• ✅ Backward compatible with legacy InverseTelecine setting
• ✅ Comprehensive logging for all encoding decisions
• ✅ Settings persist across video loads

Bug Fixes

• ✅ Fixed VFR (Variable Frame Rate) handling that caused desync
• ✅ Prevented timestamp drift in long videos
• ✅ Improved browser playback compatibility

Version 0.1.0-dev11 (2025-11-30)

Features

• ✅ Added persistent conversion stats bar visible on all screens
  • Real-time progress updates for running jobs
  • Displays pending/completed/failed job counts
  • Clickable to open queue view
  • Shows job title and progress percentage
• ✅ Added multi-video navigation with Prev/Next buttons
  • Load multiple videos for batch queue setup
  • Switch between loaded videos to review settings before queuing
  • Shows "Video X of Y" counter
• ✅ Added installation script with animated loading spinner
  • Braille character animations
  • Shows current task during build and install
  • Interactive path selection (system-wide or user-local)
• ✅ Added error dialogs with "Copy Error" button
  • One-click error message copying for debugging
  • Applied to all major error scenarios
  • Better user experience when reporting issues

Improvements

• ✅ Align direct convert and queue behavior
  • Show active direct convert inline in queue with live progress
  • Preserve queue scroll position during updates
  • Back button from queue returns to originating module
  • Queue badge includes active direct conversions
  • Allow adding to queue while a convert is running
• ✅ DVD-compliant outputs
  • Enforce MPEG-2 video + AC-3 audio, yuv420p
  • Apply NTSC/PAL targets with correct fps/resolution
  • Disable cover art for DVD targets to avoid mux errors
  • Unified settings for direct and queued jobs
• ✅ Updated queue tile to show active/total jobs instead of completed/total
  • Shows pending + running jobs out of total
  • More intuitive status at a glance
• ✅ Fixed critical deadlock in queue callback system
  • Callbacks now run in goroutines to prevent blocking
  • Prevents app freezing when adding jobs to queue
• ✅ Improved batch file handling with detailed error reporting
  • Shows which specific files failed to analyze
  • Continues processing valid files when some fail
  • Clear summary messages
• ✅ Fixed queue status display
  • Always shows progress percentage (even at 0%)
  • Clearer indication when job is running vs. pending
• ✅ Fixed queue deserialization for formatOption struct
  • Handles JSON map conversion properly
  • Prevents panic when reloading saved queue on startup

Bug Fixes

• ✅ Fixed crash when dragging multiple files
  • Better error handling in batch processing
  • Graceful degradation for problematic files
• ✅ Fixed deadlock when queue callbacks tried to read stats
• ✅ Fixed formatOption deserialization from saved queue

Version 0.1.0-dev7 (2025-11-23)

Features

• ✅ Changed default aspect ratio from 16:9 to Source across all instances
  • Updated initial state default
  • Updated empty fallback default
  • Updated reset button behavior
  • Updated clear video behavior
  • Updated hint label text

Documentation

• ✅ Created comprehensive MODULES.md with all planned modules
• ✅ Created PERSISTENT_VIDEO_CONTEXT.md design document
• ✅ Created VIDEO_PLAYER.md documenting custom player implementation
• ✅ Reorganized docs into module-specific folders
• ✅ Created detailed Convert module documentation
• ✅ Created detailed Inspect module documentation
• ✅ Created detailed Rip module documentation
• ✅ Created docs/README.md navigation hub
• ✅ Created TODO.md and DONE.md tracking files

Version 0.1.0-dev6 and Earlier

Core Application

• ✅ Fyne-based GUI framework
• ✅ Multi-module architecture with tile-based main menu
• ✅ Application icon and branding
• ✅ Debug logging system (VIDEOTOOLS_DEBUG environment variable)
• ✅ Cross-module state management
• ✅ Window initialization and sizing

Convert Module (Partial Implementation)

• ✅ Basic video conversion functionality
• ✅ Format selection (MP4, MKV, WebM, MOV, AVI)
• ✅ Codec selection (H.264, H.265, VP9)
• ✅ Quality presets (CRF-based encoding)
• ✅ Output aspect ratio selection
  • Source, 16:9, 4:3, 1:1, 9:16, 21:9
• ✅ Aspect ratio handling methods
  • Auto, Letterbox, Pillarbox, Blur Fill
• ✅ Deinterlacing options
  • Inverse telecine with default smoothing
• ✅ Mode toggle (Simple/Advanced)
• ✅ Output filename customization
• ✅ Default output naming ("-convert" suffix)
• ✅ Status indicator during conversion
• ✅ Cancelable conversion process
• ✅ FFmpeg command construction
• ✅ Process management and execution

Video Loading & Metadata

• ✅ File selection dialog
• ✅ FFprobe integration for metadata parsing
• ✅ Video source structure with comprehensive metadata
  • Path, format, resolution, duration
  • Video/audio codecs
  • Bitrate, framerate, pixel format
  • Field order detection
• ✅ Preview frame generation (24 frames)
• ✅ Temporary directory management for previews

Media Player

• ✅ Embedded video playback using FFmpeg
• ✅ Audio playback with SDL2
• ✅ Frame-accurate rendering
• ✅ Playback controls (play/pause)
• ✅ Volume control
• ✅ Seek functionality with progress bar
• ✅ Player window sizing based on video aspect ratio
• ✅ Frame pump system for smooth playback
• ✅ Audio/video synchronization
• ✅ Stable seeking and embedded video rendering

Metadata Display

• ✅ Metadata panel showing key video information
• ✅ Resolution display
• ✅ Duration formatting
• ✅ Codec information
• ✅ Aspect ratio display
• ✅ Field order indication

Inspect Module (Basic)

• ✅ Video metadata viewing
• ✅ Technical details display
• ✅ Comprehensive information in Convert module metadata panel
• ✅ Cover art preview capability

UI Components

• ✅ Main menu with 8 module tiles
  • Convert, Merge, Trim, Filters, Upscale, Audio, Thumb, Inspect
• ✅ Module color coding for visual identification
• ✅ Clear video control in metadata panel
• ✅ Reset button for Convert settings
• ✅ Status label for operation feedback
• ✅ Progress indication during operations

Git & Version Control

• ✅ Git repository initialization
• ✅ .gitignore configuration
• ✅ Version tagging system (v0.1.0-dev1 through dev7)
• ✅ Commit message formatting
• ✅ Binary exclusion from repository
• ✅ Build cache exclusion

Build System

• ✅ Go modules setup
• ✅ Fyne dependencies integration
• ✅ FFmpeg/FFprobe external tool integration
• ✅ SDL2 integration for audio
• ✅ OpenGL bindings (go-gl) for video rendering
• ✅ Cross-platform file path handling

Asset Management

• ✅ Application icon (VT_Icon.svg)
• ✅ Icon export to PNG format
• ✅ Icon embedding in application

Logging & Debugging

• ✅ Category-based logging (SYS, UI, MODULE, etc.)
• ✅ Timestamp formatting
• ✅ Debug output toggle via environment variable
• ✅ Comprehensive debug messages throughout application
• ✅ Log file output (videotools.log)

Error Handling

• ✅ FFmpeg execution error capture
• ✅ File selection cancellation handling
• ✅ Video parsing error messages
• ✅ Process cancellation cleanup

Utility Functions

• ✅ Duration formatting (seconds to HH:MM:SS)
• ✅ Aspect ratio parsing and calculation
• ✅ File path manipulation
• ✅ Temporary directory creation and cleanup

Technical Achievements

Architecture

• ✅ Clean separation between UI and business logic
• ✅ Shared state management across modules
• ✅ Modular design allowing easy addition of new modules
• ✅ Event-driven UI updates

FFmpeg Integration

• ✅ Dynamic FFmpeg command building
• ✅ Filter chain construction for complex operations
• ✅ Stream mapping for video/audio handling
• ✅ Process execution with proper cleanup
• ✅ Progress parsing from FFmpeg output (basic)

Media Playback

• ✅ Custom media player implementation
• ✅ Frame extraction and display pipeline
• ✅ Audio decoding and playback
• ✅ Synchronization between audio and video
• ✅ Embedded playback within application window
• ✅ Checkpoint system for playback position

UI/UX

• ✅ Responsive layout adapting to content
• ✅ Intuitive module selection
• ✅ Clear visual feedback during operations
• ✅ Logical grouping of related controls
• ✅ Helpful hint labels for user guidance

Milestones

• 2025-11-23 - v0.1.0-dev7 released with Source aspect ratio default
• 2025-11-22 - Documentation reorganization and expansion
• 2025-11-21 - Last successful binary build (GCC compatibility)
• Earlier - v0.1.0-dev1 through dev6 with progressive feature additions
  • dev6: Aspect ratio controls and cancelable converts
  • dev5: Icon and basic UI improvements
  • dev4: Build cache management
  • dev3: Media player checkpoint
  • Earlier: Initial implementation and architecture

Development Progress

Lines of Code (Estimated)

• main.go: ~2,500 lines (comprehensive Convert module, UI, player)
• Documentation: ~1,500 lines across multiple files
• Total: ~4,000+ lines

Modules Status

• Convert: 60% complete (core functionality working, advanced features pending)
• Inspect: 20% complete (basic metadata display, needs dedicated module)
• Merge: 0% (planned)
• Trim: 0% (planned)
• Filters: 0% (planned)
• Upscale: 0% (planned)
• Audio: 0% (planned)
• Thumb: 0% (planned)
• Rip: 0% (planned)

Documentation Status

• Module Documentation: 30% complete
  • ✅ Convert: Complete
  • ✅ Inspect: Complete
  • ✅ Rip: Complete
  • ⏳ Others: Pending
• Design Documents: 50% complete
  • ✅ Persistent Video Context
  • ✅ Module Overview
  • ⏳ Architecture
  • ⏳ FFmpeg Integration
• User Guides: 0% complete

Bug Fixes & Improvements

Recent Fixes

• ✅ Fixed aspect ratio default from 16:9 to Source (dev7)
• ✅ Stabilized video seeking and embedded rendering
• ✅ Improved player window positioning
• ✅ Fixed clear video functionality
• ✅ Resolved build caching issues
• ✅ Removed binary from git repository

Performance Improvements

• ✅ Optimized preview frame generation
• ✅ Efficient FFmpeg process management
• ✅ Proper cleanup of temporary files
• ✅ Responsive UI during long operations

Acknowledgments

Technologies Used

• Fyne - Cross-platform GUI framework
• FFmpeg/FFprobe - Video processing and analysis
• SDL2 - Audio playback
• OpenGL (go-gl) - Video rendering
• Go - Primary programming language

Community Resources

• FFmpeg documentation and community
• Fyne framework documentation
• Go community and standard library

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Last Updated: 2025-11-23