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wells1137

Overlay Skill

by Wells Wu · GitHub ↗ · v2.0.0
cross-platform ✓ Security Clean
322
Downloads
0
Stars
1
Active Installs
3
Versions
Install in OpenClaw
/install overlay-skill
Description
Adds professional packaging and motion graphics to videos, including intros/outros, subtitles, transitions, watermarks, and lower thirds. Supports multiple s...
Usage Guidance
This skill appears to do what it claims: local video editing via bundled Python scripts using MoviePy/FFmpeg. Before installing or running: (1) verify you have Python, MoviePy, and ffmpeg (and any font/ImageMagick dependencies) available on the host; (2) do not blindly run the absolute-path examples in SKILL.md — adjust paths to your environment or run scripts from the skill directory; (3) inspect any input/output paths you pass to the scripts and only supply media you trust (the scripts will read and write local files); (4) if you plan to let an agent invoke these scripts autonomously, restrict which filesystem paths the agent can access to avoid accidental exposure of unrelated files. If you want stronger guarantees, request an install spec that declares required binaries and a minimal dependency list.
Capability Analysis
Type: OpenClaw Skill Name: overlay-skill Version: 2.0.0 The OpenClaw AgentSkills skill bundle is classified as benign. The `SKILL.md` provides clear, descriptive instructions for video editing tasks without any prompt injection attempts or malicious directives. The Python scripts (`scripts/*.py`) implement video processing functionalities using the MoviePy library, performing file I/O (reading input videos/images, writing output videos) and loading configuration from `templates/presets.json`. There is no evidence of intentional harmful behavior such as data exfiltration, unauthorized network communication, persistence mechanisms, or obfuscation. While user-controlled file paths in the scripts could pose a vulnerability if the agent executes with excessive permissions or without input sanitization, this is a risk of the execution environment rather than malicious intent within the skill's code itself.
Capability Assessment
Purpose & Capability
The name/description (video intros/outros, subtitles, transitions, watermarks, lower thirds) match the included Python scripts and the presets JSON. All scripts implement the declared features and only require typical local video-processing inputs (video/image file paths, text, template names).
Instruction Scope
SKILL.md instructs the agent to run the included Python scripts with local file paths; the scripts only read the bundled presets.json and operate on input media files. No network endpoints, environment variables, or unrelated system files are referenced. Minor concern: SKILL.md examples use an absolute path (/home/ubuntu/skills/overlay-skill/...), which is environment-specific and may be incorrect or result in failed execution if blindly followed.
Install Mechanism
There is no install spec (instruction-only) but the skill includes Python scripts that depend on MoviePy/FFmpeg and possibly system ImageMagick/fonts. The lack of a declared install procedure or required binaries (ffmpeg, python, moviepy) is an operational mismatch but not a security issue by itself.
Credentials
The skill requests no environment variables, credentials, or config paths. The scripts only access their own templates/presets file and operate on explicit input/output file paths provided by the user/agent — which is proportionate to the stated purpose.
Persistence & Privilege
The skill is not marked always:true and does not modify other skills or system-wide configuration. It runs as invoked and has no privileged persistence behavior in the manifest.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install overlay-skill
  3. After installation, invoke the skill by name or use /overlay-skill
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v2.0.0
v2.0.0: Added feature comparison table with use cases, simplified CLI reference, author and tags metadata.
v1.1.0
Full English rewrite. Improved documentation clarity and usage examples.
v1.0.0
- Initial release of overlay-skill. - Provides professional video overlays: intros/outros, subtitles/titles, transitions, watermarks/borders, and lower thirds. - Supports both FFmpeg and MoviePy as core engines. - Includes preset templates and customizable options for various overlay styles. - Step-by-step usage guide and script examples for each feature. - All scripts, templates, and references are organized in dedicated directories for easy access.
Metadata
Slug overlay-skill
Version 2.0.0
License
All-time Installs 1
Active Installs 1
Total Versions 3
Frequently Asked Questions

What is Overlay Skill?

Adds professional packaging and motion graphics to videos, including intros/outros, subtitles, transitions, watermarks, and lower thirds. Supports multiple s... It is an AI Agent Skill for Claude Code / OpenClaw, with 322 downloads so far.

How do I install Overlay Skill?

Run "/install overlay-skill" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Overlay Skill free?

Yes, Overlay Skill is completely free (open-source). You can download, install and use it at no cost.

Which platforms does Overlay Skill support?

Overlay Skill is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Overlay Skill?

It is built and maintained by Wells Wu (@wells1137); the current version is v2.0.0.

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