An automated utility to merge video, audio, and subtitles into professional 9:16 vertical short-form content.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install 08-video-merge
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install 08-video-merge using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Video Synthesis Skill?
The Video Synthesis Skill is a specialized tool within the Openclaw Skills ecosystem designed for rapid post-production of vertical content. It allows developers and creators to programmatically combine raw video footage, separate audio tracks, and subtitle files into a single, polished 9:16 output. By focusing on local execution, this skill bypasses the need for expensive API calls or complex cloud-based AI model configurations, making it an efficient choice for high-volume content creators.
Video Synthesis Skill Use Cases
- Final assembly and publishing of short drama series for mobile platforms.
- Batch processing of raw video assets into ready-to-post vertical content.
- One-click automation workflows for content generation pipelines using Openclaw Skills.
- Rapid prototyping of social media ads and short-form promotional videos.
How Video Synthesis Skill Works
- The user provides the necessary input parameters, including the source video and audio URLs.
- Optional subtitle files can be included to be burned or overlaid onto the video.
- The skill processes the assets locally, ensuring data privacy and zero latency from external services.
- The engine automatically conforms the media to a 9:16 vertical aspect ratio suited for mobile viewing.
- A final production-ready video file is generated and returned via the final_video_url parameter.
Video Synthesis Skill Setup
To integrate this skill into your local environment, follow these steps:
# Navigate to your skills directory
cd openclaw-assets/skills
# Clone or download the video synthesis skill package
# Ensure your environment has the necessary media codecs installed
# This skill requires no external API keys or model configurations
Once installed, you can trigger the synthesis process by passing the required URL parameters to the Openclaw Skills runner.
Video Synthesis Skill Data Schema & Taxonomy
The skill utilizes a straightforward schema for input and output management:
| Key | Type | Description | Required |
|---|---|---|---|
| video_url | String | The path or URL to the source video file | Yes |
| audio_url | String | The path or URL to the primary audio track | Yes |
| subtitle_url | String | The path or URL to the subtitle file (SRT/VTT) | No |
| final_video_url | String | The location of the generated 9:16 video file | Output |
Video Synthesis Skill Advanced Features
- Pure local execution ensures high performance without relying on third-party cloud APIs.
- Zero-configuration design allows for immediate deployment within any Openclaw Skills workflow.
- Native support for 9:16 vertical formatting optimized for modern short-video platforms.
- Seamless integration with upstream AI agents that generate scripts or audio assets.
SKILL.md
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