A high-speed AI caption generator that creates watermark-free subtitles and SRT files for YouTube and TikTok videos in under two minutes.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install subtitle-maker-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 subtitle-maker-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 Subtitle Maker Free?
Subtitle Maker Free is a specialized AI coding agent skill designed to streamline the video production workflow by automating transcription and captioning. By leveraging advanced Openclaw Skills, this tool allows developers and creators to transform audio into perfectly timed SRT files or burn subtitles directly into MP4 files at 1080p resolution. It operates without the need for manual signups or paid subscriptions, making it an essential asset for high-volume content creation.
The skill connects to a high-performance cloud processing backend, ensuring that even hour-long videos are processed efficiently. It handles complex tasks like frame rate synchronization and audio-to-text mapping, providing a seamless bridge between raw video footage and accessible, subtitle-enhanced media content through the Openclaw Skills framework.
Subtitle Maker Free Use Cases
- Create SRT files for YouTube videos to improve SEO and global accessibility.
- Burn-in vertical captions for TikTok or Instagram Reels to engage viewers watching on mute.
- Generate quick transcripts for business demos and tutorials without hiring professional editors.
- Synchronize subtitles for long-form lecture recordings using Openclaw Skills for automated processing.
How Subtitle Maker Free Works
- Initialize the environment by checking for a NEMO_TOKEN or generating an anonymous session via the API.
- Provide a video source via a direct file upload (MP4/MOV) or a public URL from platforms like YouTube or Vimeo.
- The skill sends the media to cloud-based GPU nodes for high-speed audio transcription and precise time-alignment.
- Review the generated tracks and make manual adjustments to the transcript text if needed via the SSE stream.
- Export the final product as either a standalone SRT caption file or a rendered video with burned-in subtitles at 1080p resolution.
Subtitle Maker Free Setup
To integrate this skill into your workflow using Openclaw Skills, follow these steps:
- Ensure you have the
NEMO_TOKENenvironment variable set. If not, the skill will attempt to generate one automatically using a UUID client identifier. - Configure the configuration path for local persistence:
mkdir -p ~/.config/nemovideo/
- Set the required attribution headers to ensure successful exports:
# Required Headers:
# Authorization: Bearer <NEMO_TOKEN>
# X-Skill-Source: subtitle-maker-free
Subtitle Maker Free Data Schema & Taxonomy
The skill organizes data using a specific draft mapping to ensure consistency across the Openclaw Skills ecosystem:
| Key | Definition | Description |
|---|---|---|
| t | Tracks | Array containing video, audio, and text layers |
| tt | Track Type | Integer mapping: 0=Video, 1=Audio, 7=Text |
| sg | Segments | The specific timed intervals for each subtitle block |
| d | Duration | The total length of the media in milliseconds |
| m | Metadata | Technical specs like frame rate and resolution |
All processed files and rendered outputs are retained on the cloud servers for 24 hours before expiration.
Subtitle Maker Free Advanced Features
- Supports high-resolution 1080p cloud rendering for professional-grade output without local resource heavy lifting.
- Real-time Server-Sent Events (SSE) to track transcription progress and live editing states within Openclaw Skills.
- Automatic anonymous authentication providing 100 free credits for new users to test the transcription engine.
- Multi-format compatibility supporting MP4, MOV, AVI, WEBM, and various high-quality audio formats.
- Precise layout control allowing for customizable font sizing and caption positioning optimized for mobile screens.
SKILL.md
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