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Install in OpenClaw
/install dalong-video-frames
Description
Extract frames or short clips from videos using ffmpeg.
README (SKILL.md)
Video Frames (ffmpeg)
Extract a single frame from a video, or create quick thumbnails for inspection.
Quick start
First frame:
{baseDir}/scripts/frame.sh /path/to/video.mp4 --out /tmp/frame.jpg
At a timestamp:
{baseDir}/scripts/frame.sh /path/to/video.mp4 --time 00:00:10 --out /tmp/frame-10s.jpg
Notes
- Prefer
--timefor “what is happening around here?”. - Use a
.jpgfor quick share; use.pngfor crisp UI frames.
Usage Guidance
This looks safe for its stated purpose. Install it if you are comfortable installing ffmpeg, and make sure any --out path points somewhere safe because the generated frame may overwrite an existing file.
Capability Analysis
Type: OpenClaw Skill
Name: dalong-video-frames
Version: 1.0.0
The skill provides a functional wrapper for ffmpeg to extract video frames, but the script 'scripts/frame.sh' lacks input sanitization for parameters like '--index', '--time', and '--out'. These variables are passed directly into shell commands and ffmpeg filter strings, creating a potential risk for command or filter injection if provided with crafted input. While the behavior aligns with the stated purpose, the lack of validation qualifies as a vulnerability.
Capability Assessment
Purpose & Capability
The SKILL.md purpose and included script are coherent: both focus on extracting a video frame or thumbnail with ffmpeg.
Instruction Scope
The documented commands are explicit, user-directed examples and do not instruct the agent to ignore user intent, run in the background, or contact external services.
Install Mechanism
The only declared install requirement is ffmpeg via Homebrew, which is expected for this skill's stated purpose.
Credentials
The script writes to the user-provided output path and uses ffmpeg overwrite mode, so users should choose output paths carefully.
Persistence & Privilege
No credentials, persistent background behavior, privileged configuration, or long-running worker is shown in the artifacts.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install dalong-video-frames - After installation, invoke the skill by name or use
/dalong-video-frames - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of video-frames skill.
- Extract single frames or short clips from videos using ffmpeg.
- Supports extracting frames at specific timestamps.
- Provides quick commands for generating thumbnails.
- Includes installation instructions for ffmpeg via Homebrew.
Metadata
Frequently Asked Questions
What is Dalong Video Frames?
Extract frames or short clips from videos using ffmpeg. It is an AI Agent Skill for Claude Code / OpenClaw, with 40 downloads so far.
How do I install Dalong Video Frames?
Run "/install dalong-video-frames" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Dalong Video Frames free?
Yes, Dalong Video Frames is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Dalong Video Frames support?
Dalong Video Frames is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Dalong Video Frames?
It is built and maintained by 辉哥 (@1yihui); the current version is v1.0.0.
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