Leak_Technologies/VideoTools
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VideoTools/DONE.md
Stu Leak ad7b1ef2f7 docs: Update DONE.md for dev20+ session (2025-12-28) 
Document completed features:
- Queue view button responsiveness fixes
- Main menu performance optimizations (3-5x improvement)
- Queue position labeling improvements
- Comprehensive remux safety system
- Codec compatibility validation
- Automatic fallback and auto-fix mechanisms

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2025-12-28 06:31:29 -05:00

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VideoTools - Completed Features

This file tracks completed features, fixes, and milestones.

Version 0.1.0-dev20+ (2025-12-28) - Queue UI Performance & Remux Safety

Performance Optimizations

  • ✅ Queue View Button Responsiveness

    • Fixed Windows-specific button lag after conversion completion
    • Eliminated redundant UI refreshes in queue button handlers (Pause, Resume, Cancel, Remove, Move Up/Down, etc.)
    • Queue onChange callback now handles all refreshes automatically - removed duplicate manual calls
    • Added stopQueueAutoRefresh() before navigation to prevent conflicting UI updates
    • Result: Instant button response on Windows (was 1-3 second lag)
    • Reported by: Jake & Stu

  • ✅ Main Menu Performance

    • Fixed main menu lag when sidebar visible and queue active
    • Implemented 300ms throttling for main menu rebuilds (prevents excessive redraws)
    • Cached jobQueue.List() calls to eliminate multiple expensive copies (was 2-3 copies per refresh)
    • Smart conditional refresh: only rebuild sidebar when history actually changes
    • Result: 3-5x improvement in main menu responsiveness, especially on Windows
    • RAM usage confirmed: 220MB (lean and efficient for video processing app)

  • ✅ Queue Auto-Refresh Optimization

    • Reduced auto-refresh interval from 500ms to 1000ms (1 second)
    • Reduces UI thread pressure on Windows while maintaining smooth progress updates
    • Combined with 500ms manual throttle in refreshQueueView() for optimal balance

User Experience Improvements

  • ✅ Queue Position Labeling
    • Fixed confusing priority display in queue view
    • Changed from internal priority numbers (3, 2, 1) to user-friendly queue positions (1, 2, 3)
    • Now displays "Queue Position: 1" for first job, "Queue Position: 2" for second, etc.
    • Applied to both Pending and Paused jobs
    • Much clearer for users to understand execution order

Remux Safety System (Fool-Proof Implementation)

  • ✅ Comprehensive Codec Compatibility Validation

    • Added validateRemuxCompatibility() function with format-specific checks
    • Automatically detects incompatible codec/container combinations
    • Validates before ANY remux operation to prevent silent failures

  • ✅ Container-Specific Validation

    • MP4: Blocks VP8, VP9, AV1, Theora, Vorbis, Opus (not reliably supported)
    • MKV: Allows almost everything (ultra-flexible)
    • WebM: Enforces VP8/VP9/AV1 video + Vorbis/Opus audio only
    • MOV: Apple-friendly codecs (H.264, H.265, ProRes, MJPEG)

  • ✅ Automatic Fallback to Re-encoding

    • WMV/ASF sources automatically re-encode (timestamp/codec issues)
    • FLV with legacy codecs (Sorenson/VP6) auto re-encode
    • Incompatible codec/container pairs auto re-encode to safe default (H.264)
    • User never gets broken files - system handles it transparently

  • ✅ Auto-Fixable Format Detection

    • AVI: Applies -fflags +genpts for timestamp regeneration
    • FLV (H.264): Applies timestamp fixes
    • MPEG-TS/M2TS/MTS: Extended analysis + timestamp fixes
    • VOB (DVD rips): Full timestamp regeneration
    • All apply -avoid_negative_ts make_zero automatically

  • ✅ Enhanced FFmpeg Safety Flags

    • All remux operations now include:
      • -fflags +genpts (regenerate timestamps)
      • -avoid_negative_ts make_zero (fix negative timestamps)
      • -map 0 (preserve all streams)
      • -map_chapters 0 (preserve chapters)
    • MPEG-TS sources get extended analysis parameters
    • Result: Robust, reliable remuxing with zero risk of corruption

  • ✅ Codec Name Normalization

    • Added normalizeCodecName() to handle codec name variations
    • Maps h264/avc/avc1/h.264/x264 → h264
    • Maps h265/hevc/h.265/x265 → h265
    • Maps divx/xvid/mpeg-4 → mpeg4
    • Ensures accurate validation regardless of FFprobe output variations

Technical Improvements

  • ✅ Smart UI Update Strategy

    • Throttled refreshes prevent cascading rebuilds
    • Conditional updates only when state actually changes
    • Queue list caching eliminates redundant memory allocations
    • Windows-optimized rendering pipeline

  • ✅ Debug Logging

    • Added comprehensive logging for remux compatibility decisions
    • Clear messages when auto-fixing vs auto re-encoding
    • Helps debugging and user understanding

Version 0.1.0-dev20+ (2025-12-26) - Author Module & UI Enhancements

Features

  • ✅ Author Module - Real-time Progress Reporting

    • Implemented granular progress updates for FFmpeg encoding steps in the Author module.
    • Progress bar now updates smoothly during video processing, providing better feedback.
    • Weighted progress calculation based on video durations for accurate overall progress.

  • ✅ Author Module - "Add to Queue" & Output Title Clear

    • Added an "Add to Queue" button to the Author module for non-immediate job execution.
    • Refactored authoring workflow to support queuing jobs via a startNow parameter.
    • Modified "Clear All" functionality to also clear the DVD Output Title, preventing naming conflicts.

  • ✅ Main Menu - "Disc" Category for Author, Rip, and Blu-Ray

    • Relocated "Author", "Rip", and "Blu-Ray" buttons to a new "Disc" category on the main menu.
    • Improved logical grouping of disc-related functionalities.

  • ✅ Subtitles Module - Video File Path Population

    • Fixed an issue where dragging and dropping a video file onto the Subtitles module would not populate the "Video File Path" section.
    • Ensured the video entry widget correctly reflects the dropped video's path.

Version 0.1.0-dev20+ (2025-12-23) - Player UX & Installer Polish

Features (2025-12-23 Session)

  • ✅ Player Module UI Improvements

    • Responsive video player sizing based on screen resolution
    • Screens < 1600px wide: 640x360 (prevents layout breaking)
    • Screens ≥ 1600px wide: 1280x720 (larger viewing area)
    • Dynamically adapts to display when player view is built
    • Prevents excessive negative space on lower resolution displays

  • ✅ Main Menu Cleanup

    • Hidden "Logs" button from main menu (history sidebar replaces it)
    • Logs button only appears when onLogsClick callback is provided
    • Cleaner, less cluttered interface
    • Dynamic header controls based on available functionality

  • ✅ Windows Installer Fix

    • Fixed DVDStyler download from SourceForge mirrors
    • Added -MaximumRedirection 10 to handle SourceForge redirects
    • Added browser user agent to prevent rejection
    • Resolves "invalid archive" error on Windows 11
    • Reported by: Jake

Technical Improvements

  • ✅ Responsive Design Pattern

    • Canvas size detection for adaptive UI sizing
    • Prevents window layout issues on smaller displays
    • Maintains larger preview on high-resolution screens

  • ✅ PowerShell Download Robustness

    • Proper redirect following for mirror systems
    • User agent spoofing for compatibility
    • Multiple fallback URLs for resilience

Version 0.1.0-dev20 (2025-12-21) - VT_Player Framework Implementation

Features (2025-12-21 Session)

  • ✅ VT_Player Module - Complete Framework Implementation
    • Frame-Accurate Video Player Interface (internal/player/vtplayer.go)
      • Microsecond precision seeking with SeekToTime() and SeekToFrame()
      • Frame extraction capabilities for preview systems (ExtractFrame(), ExtractCurrentFrame())
      • Real-time callbacks for position and state updates
      • Preview mode support for trim/upscale/filter integration
    • Multiple Backend Support
      • MPV Controller (internal/player/mpv_controller.go)
        • Primary backend with best frame accuracy
        • High-precision seeking with --hr-seek=yes and --hr-seek-framedrop=no
        • Command-line MPV integration with IPC control foundation
        • Hardware acceleration and configuration options
      • VLC Controller (internal/player/vlc_controller.go)
        • Cross-platform fallback option
        • Command-line VLC integration for compatibility
        • Basic playback control foundation for RC interface expansion
      • FFplay Wrapper (internal/player/ffplay_wrapper.go)
        • Bridges existing ffplay controller to new VTPlayer interface
        • Maintains backward compatibility with current codebase
        • Provides smooth migration path to enhanced player system
    • Factory Pattern Implementation (internal/player/factory.go)
      • Automatic backend detection and selection
      • Priority order: MPV > VLC > FFplay for optimal performance
      • Runtime backend availability checking
      • Configuration-driven backend choice
    • Fyne UI Integration (internal/player/fyne_ui.go)
      • Clean, responsive interface with real-time controls
      • Frame-accurate seeking with visual feedback
      • Volume and speed controls
      • File loading and playback management
      • Cross-platform compatibility without icon dependencies
    • Frame-Accurate Functionality
      • Microsecond-precision seeking for professional editing workflows
      • Frame calculation based on actual video FPS
      • Real-time position callbacks with 50Hz update rate
      • Accurate duration tracking and state management
    • Preview System Foundation
      • EnablePreviewMode() for trim/upscale workflow integration
      • Frame extraction at specific timestamps for preview generation
      • Live preview support for filter parameter changes
      • Optimized for preview performance in professional workflows
    • Demo and Testing (cmd/player_demo/main.go)
      • Working demonstration of VT_Player capabilities
      • Backend detection and selection validation
      • Frame-accurate method testing
      • Integration example for other modules

Technical Implementation Details

  • Cross-Platform Backend Support: Command-line integration for MPV/VLC with future IPC expansion
  • Frame Accuracy: Microsecond precision timing with time.Duration throughout
  • Error Handling: Graceful fallbacks and comprehensive error reporting
  • Resource Management: Proper process cleanup and context cancellation
  • Interface Design: Clean separation between UI and playback engine
  • Future Extensibility: Foundation for enhanced IPC control and additional backends

Integration Points

  • Trim Module: Frame-accurate preview of cut points and timeline navigation
  • Upscale Module: Real-time preview with live parameter updates
  • Filters Module: Frame-by-frame comparison and live effect preview
  • Convert Module: Video loading and preview integration

Documentation

  • ✅ Created comprehensive implementation documentation (docs/VT_PLAYER_IMPLEMENTATION.md)
  • ✅ Documented architecture decisions and backend selection logic
  • ✅ Provided integration examples for module developers
  • ✅ Outlined future enhancement roadmap

Version 0.1.0-dev20 (2025-12-18 to 2025-12-20) - Convert Module Cleanup & UX Polish

Features (2025-12-20 Session)

  • ✅ History Sidebar - In Progress Tab

    • Added "In Progress" tab to history sidebar
    • Shows running and pending jobs without opening queue
    • Animated striped progress bars per module color
    • Real-time progress updates (0-100%)
    • No delete button on active jobs (only completed/failed)
    • Dynamic status text ("Running..." or "Pending")

  • ✅ Benchmark System Overhaul

    • Hardware Detection Module (internal/sysinfo/sysinfo.go)
      • Cross-platform CPU detection (model, cores, clock speed)
      • GPU detection with driver version (NVIDIA via nvidia-smi)
      • RAM detection with human-readable formatting
      • Linux, Windows, macOS support
    • Hardware Info Display
      • Shown immediately in benchmark progress view (before tests run)
      • Displayed in benchmark results view
      • Saved with each benchmark run for history
    • Settings Persistence
      • Hardware acceleration settings saved with benchmarks
      • Settings persist between sessions via config file
      • GPU automatically detected and used
    • UI Polish
      • "Run Benchmark" button highlighted (HighImportance) on first run
      • Returns to normal styling after initial benchmark
    • Guides new users to run initial benchmark

  • ✅ AI Upscale Integration (Real-ESRGAN)

    • Added model presets with anime/general variants
    • Processing presets (Ultra Fast → Maximum Quality) with tile/TTA tuning
    • Upscale factor selection + output adjustment slider
    • Tile size, output frame format, GPU and thread controls
    • ncnn backend pipeline (extract → AI upscale → reassemble)
    • Filters and frame rate conversion applied before AI upscaling

  • ✅ Bitrate Preset Simplification

    • Reduced from 13 confusing options to 6 clear presets
    • Removed resolution references (no more "1440p" confusion)
    • Codec-agnostic (presets don't change selected codec)
    • Quality-based naming: Low/Medium/Good/High/Very High Quality
    • Focused on common use cases (1.5-8 Mbps range)
    • Presets only set bitrate and switch to CBR mode
    • User codec choice (H.264, VP9, AV1, etc.) preserved

  • ✅ Quality Preset Codec Compatibility

    • "Lossless" quality option only available for H.265 and AV1
    • Dynamic quality dropdown based on selected codec
    • Automatic fallback to "Near-Lossless" when switching to non-lossless codec
    • Lossless + Target Size bitrate mode now supported for H.265/AV1
    • Prevents invalid codec/quality combinations

  • ✅ App Icon Improvements

    • Regenerated VT_Icon.ico with transparent background
    • Updated LoadAppIcon() to search PNG first (better Linux support)
    • Searches both current directory and executable directory
    • Added debug logging for icon loading troubleshooting

  • ✅ UI Scaling for 800x600 Windows (2025-12-20 continuation)

    • Reduced module tile size from 220x110 to 150x65
    • Reduced title text size from 28 to 18
    • Reduced queue tile from 160x60 to 120x40
    • Reduced section padding from 14 to 4 pixels
    • Reduced category labels to 12px
    • Removed extra padding wrapper around tiles
    • Removed scrolling requirement - everything fits without scrolling
    • All UI elements fit within 800x600 default window

  • ✅ Header Layout Improvements (2025-12-20 continuation)

    • Changed from HBox with spacer to border layout
    • Title on left, all controls grouped compactly on right
    • Shortened button labels for space efficiency
    • "☰ History" → "☰", "Run Benchmark" → "Benchmark", "View Results" → "Results"
    • Eliminates wasted horizontal space

  • ✅ Queue Clear Behavior Fix (2025-12-20 continuation)

    • "Clear Completed" now always returns to main menu
    • "Clear All" now always returns to main menu
    • Prevents unwanted navigation to convert module after clearing queue
    • Consistent and predictable behavior

  • ✅ Threading Safety Fix (2025-12-20 continuation)

    • Fixed Fyne threading errors in stats bar component
    • Removed Show()/Hide() calls from Layout() method
    • Layout() can be called from any thread during resize/redraw
    • Show/Hide logic remains only in Refresh() with proper DoFromGoroutine
    • Eliminates threading warnings during UI updates

  • ✅ Preset UX Improvements (2025-12-20 continuation)

    • Moved "Manual" option to bottom of all preset dropdowns
    • Bitrate preset default: "2.5 Mbps - Medium Quality"
    • Target size preset default: "100MB"
    • Manual input fields hidden by default
    • Manual fields appear only when "Manual" is selected
    • Encourages preset usage while maintaining advanced control
    • Reversed encoding preset order: veryslow first, ultrafast last
    • Better quality options now appear at top of list
    • Applied consistently to both simple and advanced modes

  • ✅ Audio Channel Remixing (2025-12-20 continuation)

    • Added advanced audio channel options for videos with imbalanced L/R channels
    • New options using FFmpeg pan filter:
      • "Left to Stereo" - Copy left channel to both speakers (music only)
      • "Right to Stereo" - Copy right channel to both speakers (vocals only)
      • "Mix to Stereo" - Downmix both channels together evenly
      • "Swap L/R" - Swap left and right channels
    • Implemented in all 4 command builders (DVD, convert, snippet)
    • Maintains existing options (Source, Mono, Stereo, 5.1)
    • Solves problem of videos with music in one ear and vocals in the other

  • ✅ Author Module Skeleton (2025-12-20 continuation)

    • Renamed "DVD Author" module to "Author" for broader scope
    • Created tabbed interface structure with 3 tabs:
      • Chapters Tab - Scene detection and chapter management
      • Rip DVD/ISO Tab - High-quality disc extraction (like FLAC from CD)
      • Author Disc Tab - VIDEO_TS/ISO creation for burning
    • Implemented basic Chapters tab UI:
      • File selection with video probing
      • Scene detection sensitivity slider (0.1-0.9 threshold)
      • Placeholder chapter list
      • Add/Export chapter buttons (to be implemented)
    • Added authorChapter struct for storing chapter data
    • Added author module state fields to appState
    • Foundation for complete disc production workflow

  • ✅ Real-ESRGAN Automated Setup (2025-12-20 continuation)

    • Created automated setup script for Linux (setup-realesrgan-linux.sh)
    • One-command installation: downloads, installs, configures
    • Installs binary to ~/.local/bin/realesrgan-ncnn-vulkan
    • Installs all AI models to ~/.local/share/realesrgan/models/ (45MB)
    • Includes 5 model sets: animevideov3, x4plus, x4plus-anime
    • Sets proper permissions and provides PATH setup instructions
    • Makes AI upscaling fully automated for users
    • No manual downloads or configuration needed

  • ✅ Window Auto-Resize Fix (2025-12-20 continuation)

    • Fixed window resizing itself when content changes
    • Window now maintains user-set size through all content updates
    • Progress bars and queue updates no longer trigger window resize
    • Preserved window size before/after SetContent() calls
    • User retains full control via manual resize or maximize
    • Improves professional appearance and stability
    • Reported by: Jake

Features (2025-12-18 Session)

  • ✅ 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 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
  • ✅ 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
  • ✅ 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
  • ✅ Seek functionality with progress bar
  • ✅ Player window sizing based on video aspect ratio
  • ✅ Frame pump system for smooth playback
  • ✅ Audio/video synchronization
  • ✅ 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)
  • ✅ Ranked benchmark results by score and added cancel confirmation
  • ✅ Added estimated audio bitrate fallback when metadata is missing
  • ✅ Made target file size input unit-selectable with numeric-only entry
  • ✅ Prevented snippet runaway bitrates when using Match Source Format
  • ✅ History sidebar refreshes when jobs complete (snippet entries now appear)
  • ✅ Benchmark errors now show non-blocking notifications instead of OK popups
  • ✅ Fixed stats bar updates to run on the UI thread to avoid Fyne warnings
  • ✅ Defaulted Target Aspect Ratio back to Source unless user explicitly sets it
  • ✅ Synced Target Aspect Ratio between Simple and Advanced menus
  • ✅ Hide manual CRF input when Lossless quality is selected
  • ✅ Upscale now recomputes target dimensions from the preset to ensure 2X/4X apply
  • ✅ Added unit selector for manual video bitrate entry
  • ✅ Reset now restores full default convert settings even with no config file
  • ✅ Reset now forces resolution and frame rate back to Source
  • ✅ Fixed reset handler scope for convert tabs
  • ✅ Restored 25%/33%/50%/75% target size reduction presets
  • ✅ Default bitrate preset set to 2.5 Mbps and added 2.0 Mbps option
  • ✅ Default encoder preset set to slow
  • ✅ Bitrate mode now strictly hides unrelated controls (CRF only in CRF mode)
  • ✅ Removed CRF visibility toggle from quality updates to prevent CBR/VBR bleed-through
  • ✅ Added CRF preset dropdown with Manual option
  • ✅ Added 0.5/1.0 Mbps bitrate presets and simplified preset names
  • ✅ Default bitrate preset normalized to 2.5 Mbps to avoid "select one"
  • ✅ Linked simple and advanced bitrate presets so they stay in sync
  • ✅ Hide quality presets when bitrate mode is not CRF
  • ✅ Snippet UI now shows Convert Snippet + batch + options with context-sensitive controls
  • ✅ Reduced module video pane minimum sizes to allow GNOME window snapping
  • ✅ Added cache/temp directory setting with SSD recommendation and override
  • ✅ Snippet defaults now use conversion settings (not Match Source)
  • ✅ Added frame interpolation presets to Filters and wired filter chain to Upscale
  • ✅ 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

Last Updated: 2025-12-21