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Subtitle Extension
by
vcarolxhberger
· GitHub ↗
· v1.0.0
· MIT-0
44
Downloads
0
Stars
0
Active Installs
1
Versions
Install in OpenClaw
/install subtitle-extension
Description
Skip the learning curve of professional editing software. Describe what you want — extend subtitle display time so each line stays on screen longer — and get...
Usage Guidance
This skill appears to do what it says (upload videos and return rendered files), but take these precautions before installing:
- Clarify the metadata mismatch: SKILL.md frontmatter references ~/.config/nemovideo/ while the registry shows no required config paths. Ask the publisher whether the skill will read local config files and why. If it will, review what lives in that folder.
- Only provide an NEMO_TOKEN you control and are willing to share with an external service. Prefer short-lived or limited-scope tokens (or use the anonymous-token flow) rather than placing a personal/production token in a global environment variable.
- Be aware all uploaded media will be sent to https://mega-api-prod.nemovideo.ai — confirm you trust the operator before uploading sensitive videos.
- The skill will include attribution headers and may inspect the agent install path to set X-Skill-Platform; if you do not want local path information exposed, ask the publisher to avoid requiring install-path detection.
- Because the skill owner and homepage are unknown, consider testing with non-sensitive sample media and a throwaway token first. If the owner provides a homepage or privacy/terms, review them before using for real content.
Capability Analysis
Type: OpenClaw Skill
Name: subtitle-extension
Version: 1.0.0
The skill facilitates video subtitle extension by uploading user files (up to 500MB) to a remote GPU rendering service at mega-api-prod.nemovideo.ai. While these actions are clearly aligned with the stated purpose of cloud-based video editing, the skill's reliance on external network communication, file uploads, and the management of authentication tokens (NEMO_TOKEN) constitutes high-risk behavior under the analysis criteria. The instructions also direct the agent to probe its environment to detect the host platform (e.g., clawhub vs. cursor) via its install path, which is a form of environment fingerprinting.
Capability Assessment
Purpose & Capability
The declared purpose (extend subtitle duration on uploaded videos) aligns with the runtime instructions (upload endpoints, render/export workflow, credits/status endpoints). Requesting a single service token (NEMO_TOKEN) is proportionate to a cloud-rendering service. However, the SKILL.md frontmatter advertises access to a local config path (~/.config/nemovideo/) while the registry metadata lists no required config paths — this discrepancy is unexpected and should be clarified.
Instruction Scope
The SKILL.md gives concrete API calls only related to authentication, session creation, uploading videos, SSE messaging, and export polling — all within the stated domain. The instructions do ask agents to 'auto-detect' platform from install path (which implies reading the agent's install path) and to include three attribution headers that must match the frontmatter; both expand what the agent will inspect/send beyond just the NEMO_TOKEN. Uploading user video files to the remote service is explicit and expected, but users should be aware their media is transmitted off-device.
Install Mechanism
No install spec or code files — instruction-only skill. This is the lowest-risk install posture: nothing is written to disk by the skill itself.
Credentials
The skill declares a single required env var (NEMO_TOKEN), which is appropriate. But the frontmatter inside SKILL.md also requests a config path (~/.config/nemovideo/) that the registry metadata does not list; if honored, that would give the skill access to local config files. Also, the instructions expect the agent to read NEMO_TOKEN from the environment and to generate/use anonymous tokens when absent. Requesting a persistent account token as an env var is reasonable, but users should avoid placing long-lived secrets in global environment variables unless they trust the service. The discrepancy about configPaths raises proportionality concerns.
Persistence & Privilege
The skill is not marked always:true and uses the default autonomous invocation setting. It does not request system-wide persistence or modifications to other skills. Autonomous invocation is normal here and, standing alone, is not a reason to block the skill.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install subtitle-extension - After installation, invoke the skill by name or use
/subtitle-extension - Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Initial release of Subtitle Extension.
- Launches support for extending subtitle display time in video files (MP4, MOV, AVI, WebM up to 500MB).
- Handles backend API connection and session management automatically, requiring only a video upload or user instruction.
- Provides easy, AI-powered subtitle duration extension without requiring editing software experience.
- Offers credits management, file upload, project state tracking, and fast cloud-based export (typically 20–40 seconds per job).
- Includes robust error handling and guidance for exporting, balance checks, and troubleshooting common workflow issues.
Metadata
Frequently Asked Questions
What is Subtitle Extension?
Skip the learning curve of professional editing software. Describe what you want — extend subtitle display time so each line stays on screen longer — and get... It is an AI Agent Skill for Claude Code / OpenClaw, with 44 downloads so far.
How do I install Subtitle Extension?
Run "/install subtitle-extension" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Subtitle Extension free?
Yes, Subtitle Extension is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Subtitle Extension support?
Subtitle Extension is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).
Who created Subtitle Extension?
It is built and maintained by vcarolxhberger (@vcarolxhberger); the current version is v1.0.0.
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