A professional-grade video processing skill that auto-generates, translates, and burns subtitles directly into video files using cloud GPU acceleration.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install ai-subtitle-generator-ai
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 ai-subtitle-generator-ai 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 AI Subtitle Generator?
AI Subtitle Generator is a powerful media processing tool designed for creators who need rapid, accurate captioning. By leveraging a cloud-based render pipeline, this skill allows users to transform raw footage into production-ready 1080p MP4 files with embedded subtitles. It supports a variety of formats including MP4, MOV, AVI, and WebM, making it a versatile addition to the Openclaw Skills ecosystem.
The skill excels at multilingual support, capable of generating subtitles in languages like English and Spanish simultaneously. Beyond simple transcription, it handles complex timeline operations such as text overlays and audio track management, providing a full-service video editing experience through simple natural language commands.
AI Subtitle Generator Use Cases
- Creating accessible social media content by burning captions directly into videos for platforms like Instagram or TikTok.
- Translating video content for international audiences with dual-language subtitle generation.
- Rapidly subtitling long-form interviews or educational lectures to improve viewer retention.
- Adding professional text overlays and background music to raw clips without opening a complex video editor.
How AI Subtitle Generator Works
- The user uploads a video file (up to 500MB) or provides a URL to the agent.
- The skill initiates a session with the cloud render pipeline using a NEMO_TOKEN for authentication.
- Natural language instructions are sent via a Server-Sent Events (SSE) stream to the backend for intent classification.
- A cloud GPU node processes the video, compositing layers, generating AI transcriptions, and applying H.264 compression.
- The skill monitors the render status, polling the export endpoint until the 1080p MP4 file is ready.
- A secure download URL is provided to the user to retrieve the captioned video.
AI Subtitle Generator Setup
To use this within the Openclaw Skills framework, you need to configure your environment or use the automatic setup.
Environment Variable:
export NEMO_TOKEN="your_api_token_here"
Anonymous Setup:
If no token is provided, the skill will automatically generate a UUID client identifier and fetch a temporary token (100 credits) from the Nemovideo API. Ensure the directory ~/.config/nemovideo/ is accessible for saving session state.
AI Subtitle Generator Data Schema & Taxonomy
The skill manages data through a session-based state and specific draft field mappings for the timeline:
| Field | Mapping | Description |
|---|---|---|
t |
Tracks | Array of media layers |
tt |
Track Type | 0: Video, 1: Audio, 7: Text |
sg |
Segments | Timing and placement data |
d |
Duration | Length of segment in milliseconds |
m |
Metadata | File properties and asset info |
Supported input formats: mp4, mov, avi, webm, mkv (Video); jpg, png, webp (Image); mp3, wav, m4a (Audio).
AI Subtitle Generator Advanced Features
- Multi-agent support for batch processing multiple video files within a single project session.
- Real-time SSE event handling with heartbeat monitoring to ensure long-running renders don't time out.
- Automatic GUI instruction translation, converting visual commands like "click" or "drag" into programmatic API edits.
- Smart credit management and session persistence, allowing for iterative editing and refining without re-uploading assets.
SKILL.md
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