Simple GUI toolset for FFmpeg
Performance Analysis: - Created PLAYER_PERFORMANCE_ISSUES.md with root cause analysis - Identified 6 major issues causing stuttering - Provided priority-ordered fix recommendations Quick Fixes Implemented (Priority 1): - Increase audio buffer: 2048 → 8192 samples (42ms → 170ms) - Increase audio chunk size: 4096 → 16384 bytes (21ms → 85ms) - Reduces audio underruns and stuttering significantly Root Causes Documented: 1. Separate video/audio FFmpeg processes (no A/V sync) 2. Tiny audio buffers causing underruns 3. CPU waste on per-sample volume processing 4. Frame timing drift with no correction mechanism 5. UI thread blocking every frame update 6. Memory allocation on every frame (GC pressure) Remaining Work (Requires More Time): - Priority 2: Move volume control to FFmpeg (remove hot path processing) - Priority 3: Single FFmpeg process for perfect A/V sync - Priority 4: Frame buffer pooling to reduce GC pressure - Priority 5: Adaptive frame timing with drift correction Testing Checklist Provided: - Frame rate support (24/30/60 fps) - A/V sync validation - Codec compatibility - CPU usage benchmarking 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com> |
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| assets/logo | ||
| cmd/player_demo | ||
| docs | ||
| internal | ||
| scripts | ||
| .gitattributes | ||
| .gitignore | ||
| author_dvd_functions.go | ||
| author_module.go | ||
| DONE.md | ||
| FyneApp.toml | ||
| go.mod | ||
| go.sum | ||
| inspect_module.go | ||
| main.go | ||
| naming_helpers.go | ||
| platform.go | ||
| PLAYER_PERFORMANCE_ISSUES.md | ||
| README.md | ||
| setup-windows.bat | ||
| subtitles_module.go | ||
| TODO.md | ||
| VideoTools.desktop | ||
| WINDOWS_BUILD_PERFORMANCE.md | ||
VideoTools - Video Processing Suite
What is VideoTools?
VideoTools is a professional-grade video processing application with a modern GUI. It specializes in creating DVD-compliant videos for authoring and distribution.
Key Features
DVD-NTSC & DVD-PAL Output
- Professional MPEG-2 encoding (720×480 @ 29.97fps for NTSC, 720×576 @ 25fps for PAL)
- AC-3 Dolby Digital audio (192 kbps, 48 kHz)
- DVDStyler compatible (no re-encoding warnings)
- PS2 compatible (PS2-safe bitrate limits)
- Region-free format (works worldwide)
Batch Processing
- Queue multiple videos
- Pause/resume jobs
- Real-time progress tracking
- Job history and persistence
Smart Features
- Automatic framerate conversion (23.976p, 24p, 30p, 60p, VFR → 29.97fps)
- Automatic audio resampling (any rate → 48 kHz)
- Aspect ratio preservation with intelligent handling
- Comprehensive validation with helpful warnings
Quick Start
Installation (One Command)
bash scripts/install.sh
The installer will build, install, and set up everything automatically with a guided wizard!
After installation:
source ~/.bashrc # (or ~/.zshrc for zsh)
VideoTools
Alternative: Developer Setup
If you already have the repo cloned (dev workflow):
cd /path/to/VideoTools
bash scripts/build.sh
bash scripts/run.sh
For detailed installation options, troubleshooting, and platform-specific notes, see INSTALLATION.md. For upcoming work and priorities, see docs/ROADMAP.md.
How to Create a Professional DVD
- Start VideoTools →
VideoTools - Load a video → Drag & drop into Convert module
- Select format → Choose "DVD-NTSC (MPEG-2)" or "DVD-PAL (MPEG-2)"
- Choose aspect → Select 4:3 or 16:9
- Name output → Enter filename (without .mpg)
- Queue → Click "Add to Queue"
- Encode → Click "View Queue" → "Start Queue"
- Export → Use the .mpg file in DVDStyler
Output is professional quality, ready for:
- DVDStyler authoring (no re-encoding needed)
- DVD menu creation
- Burning to disc
- PS2 playback
Documentation
Getting Started:
- INSTALLATION.md - Comprehensive installation guide (read this first!)
For Users:
- BUILD_AND_RUN.md - How to build and run VideoTools
- DVD_USER_GUIDE.md - Complete guide to DVD encoding
For Developers:
- DVD_IMPLEMENTATION_SUMMARY.md - Technical specifications
- INTEGRATION_GUIDE.md - System architecture and integration
- QUEUE_SYSTEM_GUIDE.md - Queue system reference
Requirements
- Go 1.21+ (for building)
- FFmpeg (for video encoding)
- X11 or Wayland display server (for GUI)
System Architecture
VideoTools has a modular architecture:
internal/convert/- DVD and video encodinginternal/queue/- Job queue systeminternal/ui/- User interface componentsinternal/player/- Media playbackscripts/- Build and run automation
Commands
Build & Run
# One-time setup
source scripts/alias.sh
# Run the application
VideoTools
# Force rebuild
VideoToolsRebuild
# Clean build artifacts
VideoToolsClean
Legacy (Direct commands)
# Build
go build -o VideoTools .
# Run
./VideoTools
# Run with debug logging
VIDEOTOOLS_DEBUG=1 ./VideoTools
# View logs
go run . logs
Troubleshooting
- See BUILD_AND_RUN.md for detailed troubleshooting
- Check videotools.log for detailed error messages
- Use
VIDEOTOOLS_DEBUG=1for verbose logging
Professional Use Cases
- Home video archival to physical media
- Professional DVD authoring workflows
- Multi-region video distribution
- Content preservation on optical media
- PS2 compatible video creation
Professional Quality Specifications
DVD-NTSC
- Resolution: 720 × 480 pixels
- Framerate: 29.97 fps (NTSC standard)
- Video: MPEG-2 codec, 6000 kbps
- Audio: AC-3 stereo, 192 kbps, 48 kHz
- Regions: USA, Canada, Japan, Australia
DVD-PAL
- Resolution: 720 × 576 pixels
- Framerate: 25.00 fps (PAL standard)
- Video: MPEG-2 codec, 8000 kbps
- Audio: AC-3 stereo, 192 kbps, 48 kHz
- Regions: Europe, Africa, Asia, Australia
Getting Help
- Read BUILD_AND_RUN.md for setup issues
- Read DVD_USER_GUIDE.md for how-to questions
- Check videotools.log for error details
- Review documentation in project root