MCP Video Editor (Go)

A high-performance Model Context Protocol (MCP) server for professional video editing operations using FFmpeg. Implemented in Go for speed, reliability, and easy deployment.

🚀 Quick Start

Installation

# Clone the repository
git clone https://github.com/chandler767/mcp-video-editor.git
cd mcp-video-editor

# Build the binary
go build -o bin/mcp-video-editor ./cmd/mcp-video-editor

# Run the server
./bin/mcp-video-editor

Requirements

• Go 1.23+ (for building from source)
• FFmpeg installed on your system
  • macOS: brew install ffmpeg
  • Ubuntu/Debian: sudo apt-get install ffmpeg
  • Windows: Download from ffmpeg.org

📦 Features

Core Video Operations (10 tools)

• get_video_info - Extract metadata (duration, resolution, codec, fps, bitrate)
• trim_video - Cut video segments by start/end time
• concatenate_videos - Join multiple videos together
• extract_audio - Save audio track from video
• convert_video - Convert between formats with custom quality settings
• resize_video - Change video resolution/dimensions
• extract_frames - Get screenshots at specific timestamps or intervals
• adjust_speed - Speed up or slow down playback
• transcode_for_web - Optimize videos for web sharing
• get_config / set_config / reset_config - Configuration management

Visual Effects (7 tools)

• apply_blur_effect - Gaussian, box, motion, radial blur
• apply_color_grade - Brightness, contrast, saturation, temperature, tint
• apply_chroma_key - Green screen removal
• apply_ken_burns - Zoom/pan effect on still images
• apply_vignette - Edge darkening effect
• apply_sharpen - Sharpen video with adjustable strength

Compositing (3 tools)

• create_picture_in_picture - Overlay smaller video with customizable position
• create_split_screen - Multiple layouts (horizontal, vertical, 2x2, 3x3 grid)

Transitions (2 tools)

• add_transition - 25+ transition types (fade, wipe, slide, dissolve, etc.)
• crossfade_videos - Smooth video and audio crossfade

Text & Overlays (5 tools)

• add_text_overlay - Static text overlays with positioning
• add_animated_text - Animated text with effects
• burn_subtitles - Embed subtitles from SRT files
• add_image_overlay - Image overlays with positioning and opacity
• add_shape - Draw shapes (rectangles, circles, lines)

Audio Operations (5 tools)

• extract_audio - Extract audio to separate file
• adjust_volume - Change audio volume
• normalize_audio - Normalize audio levels
• fade_audio - Fade in/out
• remove_audio - Remove audio track

Timeline System (8 tools)

• create_timeline - Create new timeline for multi-operation editing
• add_to_timeline - Queue operations on timeline
• undo_operation - Undo last operation
• redo_operation - Redo undone operation
• view_timeline - View timeline state and history
• jump_to_timeline_point - Jump to specific point in timeline
• list_timelines - List all timelines
• get_timeline_stats - Get timeline statistics

Multi-Take Editing (8 tools)

• create_multi_take_project - Create project for managing multiple takes
• add_takes_to_project - Add video takes to project
• analyze_takes - Analyze quality of all takes
• get_project_analysis - Get detailed analysis results
• select_best_takes - Automatically select best takes
• assemble_best_takes - Assemble final video from best takes
• export_final_video - Export final assembled video
• list_multi_take_projects - List all projects

AI Vision Analysis (5 tools) - Requires OpenAI API Key

• analyze_video_content - Get frame-by-frame descriptions and summary
• search_visual_content - Find specific objects, people, scenes, or text
• describe_scene - Get detailed description at specific timestamp
• find_objects_in_video - Track when specific objects appear
• compare_video_frames - Detect changes between two moments

Diagram Generation (4 tools)

• generate_flowchart - Create flowchart diagrams from data
• generate_timeline - Create timeline diagrams
• generate_org_chart - Create organization charts
• generate_mind_map - Create mind map diagrams

Total: 60 MCP Tools

🛡️ Safety Features

• Source file protection - Original files are never modified
• Overwrite detection - Prevents accidentally using same input/output path
• Quality matching - Outputs automatically match input quality
• Type-safe operations - Go's type system prevents common errors

📊 Testing

Run the comprehensive test suite:

# Run all tests
go test ./...

# Run with verbose output
go test -v ./...

# Run specific package tests
go test -v ./pkg/video
go test -v ./pkg/visual
go test -v ./pkg/server

Test Coverage:

• ✅ 19 comprehensive tests
• ✅ 100% pass rate
• ✅ Tests cover video operations, visual effects, and MCP handlers

🔧 Configuration

Configuration file: ~/.mcp-video-config.json

{
  "ffmpegPath": "/usr/local/bin/ffmpeg",
  "ffprobePath": "/usr/local/bin/ffprobe",
  "openaiApiKey": "sk-...",
  "defaultQuality": "medium",
  "tempDir": "/tmp/mcp-video"
}

Environment Variables:

• OPENAI_API_KEY - For vision analysis and transcription features
• FFMPEG_PATH - Custom FFmpeg binary path
• FFPROBE_PATH - Custom FFprobe binary path

📖 Documentation

• README-GO.md - Detailed Go implementation guide
• GO-TEST-REPORT.md - Comprehensive test results
• GO-PORT-SUMMARY.md - Port completion details
• TRANSCRIPT_FEATURES.md - Transcript editing guide
• VISION.md - Vision analysis guide

🏗️ Architecture

mcp-video-editor/
├── cmd/
│   └── mcp-video-editor/    # Main application
├── pkg/
│   ├── config/              # Configuration management
│   ├── ffmpeg/              # FFmpeg wrapper
│   ├── video/               # Video operations
│   ├── visual/              # Visual effects, compositing, transitions
│   ├── text/                # Text overlays
│   ├── timeline/            # Timeline management
│   ├── transcript/          # Transcription
│   ├── vision/              # GPT-4 Vision analysis
│   ├── multitake/           # Multi-take editing
│   ├── diagrams/            # Diagram generation
│   ├── elements/            # Visual elements
│   └── server/              # MCP server
├── go.mod                   # Go module definition
└── bin/
    └── mcp-video-editor     # Compiled binary (9.3 MB)

🚀 Performance

• Binary Size: 9.3 MB (self-contained, no dependencies)
• Memory Efficient: Minimal memory footprint
• Fast Startup: < 1 second initialization
• Concurrent Processing: Handles multiple operations efficiently

📝 Example Usage

Via MCP Client (Claude)

User: "Trim my video.mp4 from 10 to 30 seconds"
Claude: [Uses trim_video tool]

User: "Add a blur effect to output.mp4"
Claude: [Uses apply_blur_effect tool]

User: "Create a split screen with video1.mp4 and video2.mp4"
Claude: [Uses create_split_screen tool]

Direct API Usage

package main

import (
    "context"
    "github.com/chandler-mayo/mcp-video-editor/pkg/video"
    "github.com/chandler-mayo/mcp-video-editor/pkg/ffmpeg"
)

func main() {
    ffmpegMgr, _ := ffmpeg.NewManager("ffmpeg", "ffprobe")
    videoOps := video.NewOperations(ffmpegMgr)

    // Trim video
    videoOps.Trim(context.Background(), video.TrimOptions{
        Input:     "input.mp4",
        Output:    "output.mp4",
        StartTime: 10.0,
        EndTime:   &[]float64{30.0}[0],
    })
}

🤝 Contributing

Contributions welcome! Please ensure all tests pass before submitting PRs:

go test ./...
go build -o bin/mcp-video-editor ./cmd/mcp-video-editor

📄 License

MIT License - See LICENSE file for details

🙏 Acknowledgments

• Built with mark3labs/mcp-go
• Powered by FFmpeg
• OpenAI integration via go-openai

Status: ✅ Production Ready | Version: 1.0.0 | Tests: 19/19 Passing