An AI-powered video captioning tool that automatically generates, translates, and burns subtitles into your videos using remote GPU rendering.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install caption-generator-for-video-free
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 caption-generator-for-video-free 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 Caption Generator for Video Free?
Caption Generator for Video Free is a specialized utility designed for content creators who need to add professional subtitles to their media without the complexity of manual editing software. By leveraging high-performance remote GPU nodes, this skill handles the heavy lifting of AI transcription and video compositing entirely server-side, returning polished 1080p MP4 files ready for social media or YouTube.
As part of the Openclaw Skills ecosystem, it provides a seamless bridge between raw video assets and finished captioned content. Users can upload various formats including MP4, MOV, and WebM, and simply use natural language commands to dictate caption styles, languages, and formatting, eliminating the need for expensive transcription subscriptions.
Caption Generator for Video Free Use Cases
- Adding multilingual subtitles to YouTube tutorials or social media clips to reach a global audience.
- Burning text overlays and captions directly into videos for platforms that autoplay without sound.
- Rapidly generating captions for short-form content like TikToks or Reels in under 60 seconds.
- Batch processing multiple video files within a single session to maintain consistent caption styling.
How Caption Generator for Video Free Works
- The skill initializes by checking for a NEMO_TOKEN or generating a free anonymous session token for the user.
- Users upload video files (up to 500MB) which are processed through a remote API to create a unique session ID.
- The user provides natural language instructions such as "add captions in English and Spanish to my video".
- An AI engine processes the request via a Server-Sent Events (SSE) stream, performing speech-to-text and aligning timestamps.
- A cloud render pipeline composites the subtitle layers onto the video with platform-specific compression.
- The user polls the export status and receives a direct download link for the final 1080p MP4 file.
Caption Generator for Video Free Setup
To get started with this skill, ensure your environment is configured properly. The skill will automatically attempt to handle token generation if the primary environment variable is missing.
# Set your Nemo API token if you have one
export NEMO_TOKEN="your_token_here"
# The skill uses the following config path for persistent sessions
mkdir -p ~/.config/nemovideo/
Caption Generator for Video Free Data Schema & Taxonomy
The skill organizes video projects using a session-based draft system. Below is the mapping for the internal timeline metadata:
| Key | Definition | Details |
|---|---|---|
t |
Tracks | Array of media tracks in the timeline |
tt |
Track Type | 0: Video, 1: Audio, 7: Text/Captions |
sg |
Segments | Individual clips or text blocks |
d |
Duration | Length of segments in milliseconds (ms) |
m |
Metadata | Technical specs like resolution and framerate |
Caption Generator for Video Free Advanced Features
- Multi-language support for simultaneous subtitle generation in different languages.
- Remote GPU acceleration for high-speed server-side rendering of 1080p video.
- Session persistence allowing users to refine edits and re-render without re-uploading files.
- Automatic conversion and support for a wide array of formats including MKV, AVI, and WebP.
SKILL.md
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