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tk8544-b

Best Demo Video

by tk8544-b · GitHub ↗ · v1.0.0 · MIT-0
cross-platform ⚠ suspicious
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Install in OpenClaw
/install best-demo-video
Description
Skip the learning curve of professional editing software. Describe what you want — trim the intro, add titles for each feature, and export as a clean demo —...
README (SKILL.md)

Getting Started

Share your raw footage and I'll get started on AI demo video creation. Or just tell me what you're thinking.

Try saying:

  • "create my raw footage"
  • "export 1080p MP4"
  • "trim the intro, add titles for"

Automatic Setup

On first interaction, connect to the processing API before doing anything else. Show a brief status like "Setting things up...".

Token: If NEMO_TOKEN environment variable is already set, use it and skip to Session below.

Free token: Generate a UUID as client identifier, then POST to https://mega-api-prod.nemovideo.ai/api/auth/anonymous-token with header X-Client-Id: \x3Cuuid>. The response field data.token becomes your NEMO_TOKEN (100 credits, 7-day expiry).

Session: POST to https://mega-api-prod.nemovideo.ai/api/tasks/me/with-session/nemo_agent with Bearer auth and body {"task_name":"project"}. Save session_id from the response.

Confirm to the user you're connected and ready. Don't print tokens or raw JSON.

Best Demo Video — Create and Export Demo Videos

This tool takes your raw footage and runs AI demo video creation through a cloud rendering pipeline. You upload, describe what you want, and download the result.

Say you have a 2-minute screen recording of a software feature and want to trim the intro, add titles for each feature, and export as a clean demo — the backend processes it in about 1-2 minutes and hands you a 1080p MP4.

Tip: keep your demo under 90 seconds for the highest viewer retention.

Matching Input to Actions

User prompts referencing best demo video, aspect ratio, text overlays, or audio tracks get routed to the corresponding action via keyword and intent classification.

User says... Action Skip SSE?
"export" / "导出" / "download" / "send me the video" → §3.5 Export
"credits" / "积分" / "balance" / "余额" → §3.3 Credits
"status" / "状态" / "show tracks" → §3.4 State
"upload" / "上传" / user sends file → §3.2 Upload
Everything else (generate, edit, add BGM…) → §3.1 SSE

Cloud Render Pipeline Details

Each export job queues on a cloud GPU node that composites video layers, applies platform-spec compression (H.264, up to 1080x1920), and returns a download URL within 30-90 seconds. The session token carries render job IDs, so closing the tab before completion orphans the job.

All calls go to https://mega-api-prod.nemovideo.ai. The main endpoints:

  1. SessionPOST /api/tasks/me/with-session/nemo_agent with {"task_name":"project","language":"\x3Clang>"}. Gives you a session_id.
  2. Chat (SSE)POST /run_sse with session_id and your message in new_message.parts[0].text. Set Accept: text/event-stream. Up to 15 min.
  3. UploadPOST /api/upload-video/nemo_agent/me/\x3Csid> — multipart file or JSON with URLs.
  4. CreditsGET /api/credits/balance/simple — returns available, frozen, total.
  5. StateGET /api/state/nemo_agent/me/\x3Csid>/latest — current draft and media info.
  6. ExportPOST /api/render/proxy/lambda with render ID and draft JSON. Poll GET /api/render/proxy/lambda/\x3Cid> every 30s for completed status and download URL.

Formats: mp4, mov, avi, webm, mkv, jpg, png, gif, webp, mp3, wav, m4a, aac.

Headers are derived from this file's YAML frontmatter. X-Skill-Source is best-demo-video, X-Skill-Version comes from the version field, and X-Skill-Platform is detected from the install path (~/.clawhub/ = clawhub, ~/.cursor/skills/ = cursor, otherwise unknown).

Every API call needs Authorization: Bearer \x3CNEMO_TOKEN> plus the three attribution headers above. If any header is missing, exports return 402.

Draft JSON uses short keys: t for tracks, tt for track type (0=video, 1=audio, 7=text), sg for segments, d for duration in ms, m for metadata.

Example timeline summary:

Timeline (3 tracks): 1. Video: city timelapse (0-10s) 2. BGM: Lo-fi (0-10s, 35%) 3. Title: "Urban Dreams" (0-3s)

Translating GUI Instructions

The backend responds as if there's a visual interface. Map its instructions to API calls:

  • "click" or "点击" → execute the action via the relevant endpoint
  • "open" or "打开" → query session state to get the data
  • "drag/drop" or "拖拽" → send the edit command through SSE
  • "preview in timeline" → show a text summary of current tracks
  • "Export" or "导出" → run the export workflow

SSE Event Handling

Event Action
Text response Apply GUI translation (§4), present to user
Tool call/result Process internally, don't forward
heartbeat / empty data: Keep waiting. Every 2 min: "⏳ Still working..."
Stream closes Process final response

~30% of editing operations return no text in the SSE stream. When this happens: poll session state to verify the edit was applied, then summarize changes to the user.

Error Handling

Code Meaning Action
0 Success Continue
1001 Bad/expired token Re-auth via anonymous-token (tokens expire after 7 days)
1002 Session not found New session §3.0
2001 No credits Anonymous: show registration URL with ?bind=\x3Cid> (get \x3Cid> from create-session or state response when needed). Registered: "Top up credits in your account"
4001 Unsupported file Show supported formats
4002 File too large Suggest compress/trim
400 Missing X-Client-Id Generate Client-Id and retry (see §1)
402 Free plan export blocked Subscription tier issue, NOT credits. "Register or upgrade your plan to unlock export."
429 Rate limit (1 token/client/7 days) Retry in 30s once

Tips and Tricks

The backend processes faster when you're specific. Instead of "make it look better", try "trim the intro, add titles for each feature, and export as a clean demo" — concrete instructions get better results.

Max file size is 500MB. Stick to MP4, MOV, AVI, WebM for the smoothest experience.

Export as MP4 for widest compatibility across browsers and platforms.

Common Workflows

Quick edit: Upload → "trim the intro, add titles for each feature, and export as a clean demo" → Download MP4. Takes 1-2 minutes for a 30-second clip.

Batch style: Upload multiple files in one session. Process them one by one with different instructions. Each gets its own render.

Iterative: Start with a rough cut, preview the result, then refine. The session keeps your timeline state so you can keep tweaking.

Usage Guidance
This skill calls an external API (mega-api-prod.nemovideo.ai), uploads user media, and requires a NEMO_TOKEN (you can use an anonymous token flow described in the SKILL.md). Before installing: (1) confirm the skill's publisher and source (homepage is missing); (2) decide whether you trust the nemovideo service to store/process your videos and review its privacy/retention policy; (3) if you prefer, use an anonymous/limited token (as described) rather than a long-lived credential or account token; (4) ask the author to clarify the configPaths discrepancy (~/.config/nemovideo/ appears in SKILL.md but not in registry) and whether the skill will read or write files outside its own data; (5) avoid supplying highly sensitive footage until you verify where and how exports/uploads are stored. The inconsistencies look like packaging sloppiness rather than overt malice, but treat tokens and uploaded media as sensitive.
Capability Analysis
Type: OpenClaw Skill Name: best-demo-video Version: 1.0.0 The skill bundle provides a legitimate integration for an AI video editing service hosted at nemovideo.ai. It includes detailed instructions for the agent to manage authentication tokens, handle session states, and interact with a cloud rendering pipeline via SSE and REST API calls (e.g., mega-api-prod.nemovideo.ai). No evidence of data exfiltration, malicious execution, or harmful prompt injection was found; the requested environment variables (NEMO_TOKEN) and file path checks for platform attribution are consistent with the tool's stated functionality.
Capability Assessment
Purpose & Capability
Name/description match the runtime instructions: the SKILL.md describes uploading raw video, creating sessions, editing via SSE, and exporting via a nemovideo cloud API. Requesting a single service token (NEMO_TOKEN) is consistent with this purpose. However, the SKILL.md frontmatter lists a configPaths entry (~/.config/nemovideo/) while the registry metadata lists no required config paths — an inconsistency that should be clarified.
Instruction Scope
Instructions stay within the video-editing domain: obtain or reuse a NEMO_TOKEN, create a session, upload videos (up to 500MB), drive edits via SSE, and poll for exports. A potentially unexpected runtime step is 'detecting the install path' to set an X-Skill-Platform header (e.g., ~/.clawhub/ or ~/.cursor/skills/), which implies filesystem/environment inspection that isn't declared elsewhere. The skill also instructs deriving headers from the file's YAML frontmatter — reading the SKILL.md itself is expected, but any actions that probe other paths were not clearly authorized in the registry metadata.
Install Mechanism
This is instruction-only (no install spec, no code files). That minimizes disk-executed code risk; the skill's runtime behavior consists of outbound API calls to the nemovideo endpoints described in SKILL.md.
Credentials
Only one credential is requested (NEMO_TOKEN), which is appropriate for a cloud API client. The SKILL.md also includes a configPaths value (~/.config/nemovideo/) in its frontmatter, but the registry lists none — this mismatch may indicate either an omitted declaration or that the skill expects to read/write a local config directory. Confirm whether the skill will access that path and why.
Persistence & Privilege
always is false and the skill is user-invocable. It asks to save a session_id and to reuse or refresh tokens (normal behavior). It does not request permanent/always-on privileges or modify other skills' configs.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install best-demo-video
  3. After installation, invoke the skill by name or use /best-demo-video
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
Best Demo Video 1.0.0 — Initial Release - Launches a cloud-based skill to automatically create and export professional demo videos from your raw footage. - Supports MP4, MOV, AVI, and WebM uploads up to 500MB; AI processes editing tasks like trimming, adding titles, and exporting in 1–2 minutes. - No video editing experience required—simply describe edits in plain language. - Handles token management, session setup, and export workflow transparently. - Designed for quick video turnaround, ideal for marketers needing polished demos without a dedicated editor.
Metadata
Slug best-demo-video
Version 1.0.0
License MIT-0
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is Best Demo Video?

Skip the learning curve of professional editing software. Describe what you want — trim the intro, add titles for each feature, and export as a clean demo —... It is an AI Agent Skill for Claude Code / OpenClaw, with 107 downloads so far.

How do I install Best Demo Video?

Run "/install best-demo-video" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is Best Demo Video free?

Yes, Best Demo Video is completely free, licensed under MIT-0. You can download, install and use it at no cost.

Which platforms does Best Demo Video support?

Best Demo Video is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created Best Demo Video?

It is built and maintained by tk8544-b (@tk8544-b); the current version is v1.0.0.

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