Kdenlive MCP Server
Provides tools for AI-driven video editing workflows via Kdenlive, including project management, timeline editing, filters, transitions, guides, and export.
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Here is a step-by-step guide with screenshots.
Kdenlive MCP Server
A Model Context Protocol (MCP) server wrapping cli-anything-kdenlive for LLM-driven video editing workflows via Kdenlive.
Overview
This FastMCP server enables AI models to perform complex video editing tasks on Kdenlive projects through a unified set of 36 tools organized into 8 functional categories. The server uses the Python API of cli-anything-kdenlive directly (not subprocess) to maintain a persistent session state, ensuring modifications are immediately available to subsequent tool calls.
Key Features
Persistent Session State: Uses CLI's in-memory session API, auto-saves after every mutation
Gen 5 XML Export: Kdenlive-compatible XML output with proper bin references and version metadata
Robust Error Handling: All exceptions caught and returned as structured JSON payloads
Auto-Project Tracking: Globally tracks project path; all tools automatically target the active project
36 MCP Tools: Comprehensive coverage of Kdenlive operations
Related MCP server: DaVinci Resolve MCP Server
Installation
Prerequisites
# Python 3.10+
# Ensure uv is installed for dependency management
pip install uvInstall Dependencies
cd kdenlive-mcp-server
uv syncUsage
As an MCP Server
The server runs as a FastMCP server compatible with any LLM platform that supports MCP (e.g., Claude Code, Pi, OpenCode).
Command Line
# Run the MCP server
uv run kdenlive-mcp
# Or directly via Python
uv run python3 -m kdenlive_mcp_server.serverPython Integration
from kdenlive_mcp_server.server import (
project_new, bin_import_clip, timeline_add_clip, export_xml
)
# Create project
result = project_new(output_path="my_project.kdenlive-cli.json", profile="hd1080p30")
# Import media
result = bin_import_clip(clip_path="video.mp4", name="Interview", duration=120.0)
# Add to timeline
result = timeline_add_clip(clip_id="clip0", track=0, position=0.0)
# Export XML
result = export_xml(output_path="output.kdenlive")Project Structure
kdenlive-mcp-server/
├── kdenlive_mcp_server/
│ ├── __init__.py # Empty package init
│ └── server.py # FastMCP server with 36 tools (876 lines)
├── main.py # Entry point delegating to server module
├── pyproject.toml # Project configuration and dependencies
├── uv.lock # Dependency lock file
└── README.md # This fileTools
Project (5 tools)
Tool | Description |
| Create a new Kdenlive project with optional profile override |
| Load an existing .kdenlive-cli.json project |
| Persist the current project state to disk |
| Get project metadata (resolution, FPS, track layout, clip counts) |
| List all available video output profiles (hd1080p30, 4k60, sd_pal, etc.) |
Bin (4 tools)
Tool | Description |
| Ingest media files (video, audio, image) into the project bin |
| Delete a clip from the bin by ID |
| List all assets in the project bin |
| Fetch detailed properties of a clip (duration, type, source) |
Timeline (8 tools)
Tool | Description |
| Append a video or audio track to the timeline |
| Delete a track and all its clips |
| Place a bin clip on a track at a specific position |
| Remove a clip from a track |
| Reposition a clip on the same track |
| Adjust clip in/out crop handles |
| Cut a clip into two pieces at a precise offset |
| List all tracks with clip counts and status |
Filters (5 tools)
Tool | Description |
| Attach a video/audio effect (blur, brightness, frei0r.opacity, volume) |
| Remove an effect from a clip |
| Update a single filter parameter (radius, opacity, level) |
| List all active filters on a clip |
| Discover all available filters by category |
Transitions (4 tools)
Tool | Description |
| Create blend transitions (dissolve, wipe, slide, composite, affine) |
| Delete a transition by ID |
| Update a transition parameter |
| List all transitions on the timeline |
Guides (3 tools)
Tool | Description |
| Add timeline markers/chapters |
| Remove a guide by ID |
| List all guide markers |
Export (3 tools)
Tool | Description |
| Generate Kdenlive/MLT XML for the project |
| List available render presets |
| Render project to video via melt CLI |
Session (4 tools)
Tool | Description |
| Revert the most recent operation (up to 50 history entries) |
| Redo the last undone operation |
| Inspect session state (project loaded, modified flag, history depth) |
| List all undo/redo history entries |
Example Workflows
Create a Simple Video Project
from kdenlive_mcp_server.server import (
project_new, bin_import_clip, timeline_add_track,
timeline_add_clip, export_xml, project_save
)
# 1. Create project
result = project_new(
output_path="intro_video.kdenlive-cli.json",
profile="hd1080p30",
name="Introduction"
)
# 2. Import media
result = bin_import_clip(
clip_path="interview.mp4",
name="Interview",
duration=120.0
)
# 3. Add track and place clip
result = timeline_add_track(track_type="video", track_name="V1")
result = timeline_add_clip(
clip_id="clip0", # From bin_import_clip response
track=0,
position=0.0
)
# 4. Export
result = export_xml(output_path="intro.kdenlive")Apply Effects to Clips
from kdenlive_mcp_server.server import (
project_new, bin_import_clip, timeline_add_track,
timeline_add_clip, filter_add, filter_set_param, filter_list
)
# Setup
result = project_new(output_path="effects_demo.kdenlive-cli.json", profile="hd720p60")
result = bin_import_clip(clip_path="movie.mp4", name="Movie", duration=300.0)
result = timeline_add_track(track_type="video")
result = timeline_add_clip(clip_id="clip0", track=0, position=0.0)
# Add brightness filter
result = filter_add(
track_id=0,
clip_index=0,
filter_type="brightness",
params=["level=0.8"]
)
# Update brightness
result = filter_set_param(
track_id=0,
clip_index=0,
filter_index=0,
parameter="level",
value="1.2"
)
# List filters
result = filter_list(track_id=0, clip_index=0)Add Chapter Markers
from kdenlive_mcp_server.server import (
project_new, bin_import_clip, timeline_add_track,
timeline_add_clip, guide_add, guide_list, project_save
)
# Setup
result = project_new(output_path="documentary.kdenlive-cli.json", profile="4k30")
result = bin_import_clip(clip_path="documentary.mp4", name="Doc", duration=900.0)
result = timeline_add_track(track_type="video")
result = timeline_add_clip(clip_id="clip0", track=0, position=0.0)
# Add chapter markers
result = guide_add(position=60.0, label="Chapter 1: Introduction", guide_type="chapter")
result = guide_add(position=180.0, label="Chapter 2: Main Content", guide_type="chapter")
result = guide_add(position=300.0, label="Chapter 3: Conclusion", guide_type="chapter")
# List guides
result = guide_list()
# Save
result = project_save()Error Handling
All tools return consistent response formats:
# Success
{
"success": True,
"data": {...}
}
# Error
{
"success": False,
"error": "Error message describing the failure"
}Configuration
pyproject.toml
[project]
name = "kdenlive-mcp-server"
version = "0.1.0"
description = "MCP server for Kdenlive video editing via cli-anything-kdenlive"
requires-python = ">=3.10"
dependencies = [
"mcp>=1.28.0",
"cli-anything-kdenlive>=1.0.0",
]
[project.scripts]
kdenlive-mcp = "kdenlive_mcp_server.server:main"
[tool.uv.sources]
cli-anything-kdenlive = { git = "https://github.com/HKUDS/CLI-Anything.git", subdirectory = "kdenlive/agent-harness" }uv.lock
Auto-generated by uv sync. Contains locked dependency versions.
Dependencies
mcp>=1.28.0: FastMCP server framework for MCP protocol
cli-anything-kdenlive @ git+https://github.com/HKUDS/CLI-Anything.git#subdirectory=kdenlive/agent-harness:
CLI harness for Kdenlive video editing via melt
Includes Gen 5 MLT XML format rewrite (PR #216)
Provides Python API for project management
Troubleshooting
Kdenlive XML Compatibility Issues
If Kdenlive reports "Version of the project file cannot be read" or "Timeline clip without bin reference found":
Cause: Using PyPI v1.0.0 (Gen 4 format) which lacks proper Kdenlive metadata
Fix: The package now installs from GitHub HEAD with Gen 5 format that includes:
kdenlive:docproperties.version="1.1"Chain-based clip structure with
kdenlive:idlinking to main_binProper bin reference handling
Project Not Saving
The server auto-saves to disk after every mutation. If changes aren't persisting:
Verify the project path is set via
project_new()orproject_open()Check that
session_status()showshas_project: trueEnsure the output directory is writable
FastMCP Server Not Starting
Verify MCP version:
uv run python3 -c "import mcp; print(mcp.__version__)"Check FastMCP:
uv run python3 -c "from mcp.server.fastmcp import FastMCP; print('FastMCP OK')"Review logs for detailed error messages
Development
Testing
Run the test suite:
# Run all integration tests
uv run python3 test_integration.py
# Test with zero-duration edge case
uv run python3 test_edge_cases.pyCode Style
The project follows PEP 8 style guidelines. Use uv run ruff check . to lint.
Adding New Tools
To add a new MCP tool:
Add the tool function to
server.pydecorated with@server.tool()Import the corresponding CLI API module if needed
Include comprehensive docstrings with Args and Returns sections
Implement error handling with try/except
Call
_save()after mutations to persist changes
Example:
@server.tool()
def my_new_tool(param1: str, param2: int) -> dict[str, Any]:
"""Brief description of what the tool does.
Args:
param1: Description of param1.
param2: Description of param2.
Returns:
Success response format.
"""
err = _require_project()
if err:
return err
try:
# Do something with the project
result = some_api_function(param1, param2)
_save()
return _ok(result)
except Exception as e:
return _err(str(e))Contributing
Fork the repository
Create a feature branch
Add tests for new functionality
Ensure all tests pass:
uv run pytestSubmit a pull request
References
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