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dsewell-583h0

Video On Canva

by dsewell-583h0 · GitHub ↗ · v1.0.0 · MIT-0
cross-platform ⚠ suspicious
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Install in OpenClaw
/install video-on-canva
Description
Get polished MP4 videos ready to post, without touching a single slider. Upload your images or clips (MP4, MOV, PNG, JPG, up to 500MB), say something like "c...
README (SKILL.md)

Getting Started

Ready when you are. Drop your images or clips here or describe what you want to make.

Try saying:

  • "create five product photos and a logo PNG into a 1080p MP4"
  • "combine these images into a 30-second promo video with music and text overlays"
  • "turning images and clips into shareable videos for marketers and content creators"

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.

Video on Canva — Create and Export Polished Videos

Drop your images or clips in the chat and tell me what you need. I'll handle the AI video creation on cloud GPUs — you don't need anything installed locally.

Here's a typical use: you send a five product photos and a logo PNG, ask for combine these images into a 30-second promo video with music and text overlays, and about 1-2 minutes later you've got a MP4 file ready to download. The whole thing runs at 1080p by default.

One thing worth knowing — using fewer than ten images keeps render times under a minute.

Matching Input to Actions

User prompts referencing video on canva, 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.

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

Headers are derived from this file's YAML frontmatter. X-Skill-Source is video-on-canva, 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).

API base: https://mega-api-prod.nemovideo.ai

Create session: POST /api/tasks/me/with-session/nemo_agent — body {"task_name":"project","language":"\x3Clang>"} — returns task_id, session_id.

Send message (SSE): POST /run_sse — body {"app_name":"nemo_agent","user_id":"me","session_id":"\x3Csid>","new_message":{"parts":[{"text":"\x3Cmsg>"}]}} with Accept: text/event-stream. Max timeout: 15 minutes.

Upload: POST /api/upload-video/nemo_agent/me/\x3Csid> — file: multipart -F "files=@/path", or URL: {"urls":["\x3Curl>"],"source_type":"url"}

Credits: GET /api/credits/balance/simple — returns available, frozen, total

Session state: GET /api/state/nemo_agent/me/\x3Csid>/latest — key fields: data.state.draft, data.state.video_infos, data.state.generated_media

Export (free, no credits): POST /api/render/proxy/lambda — body {"id":"render_\x3Cts>","sessionId":"\x3Csid>","draft":\x3Cjson>,"output":{"format":"mp4","quality":"high"}}. Poll GET /api/render/proxy/lambda/\x3Cid> every 30s until status = completed. Download URL at output.url.

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

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

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

Reading the SSE Stream

Text events go straight to the user (after GUI translation). Tool calls stay internal. Heartbeats and empty data: lines mean the backend is still working — show "⏳ Still working..." every 2 minutes.

About 30% of edit operations close the stream without any text. When that happens, poll /api/state to confirm the timeline changed, then tell the user what was updated.

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)

Common Workflows

Quick edit: Upload → "combine these images into a 30-second promo video with music and text overlays" → 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.

Tips and Tricks

The backend processes faster when you're specific. Instead of "make it look better", try "combine these images into a 30-second promo video with music and text overlays" — concrete instructions get better results.

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

Export as MP4 for widest compatibility.

Usage Guidance
Before installing, confirm you are comfortable using NemoVideo as the backend service, not necessarily Canva. Do not upload confidential or customer media unless you have reviewed the provider’s privacy and retention terms, and use a dedicated NEMO_TOKEN if you connect an account.
Capability Assessment
Purpose & Capability
The video-generation workflow is coherent, but the user-facing name/display name says “Canva” while the documented backend, token, sessions, and uploads use nemovideo.ai/NEMO, creating a material provider-identity mismatch.
Instruction Scope
The skill instructs the agent to connect to the external API, create or use a token, upload selected media, run SSE generation, export, and poll for completion. These actions are mostly purpose-aligned but should be visible to the user.
Install Mechanism
This is an instruction-only skill with no install spec and no code files, and the static scanner reported no findings.
Credentials
Uploading images or clips up to 500MB to a third-party cloud renderer is proportionate for cloud video creation, but the Canva/NemoVideo mismatch makes the destination and trust boundary less clear.
Persistence & Privilege
The skill uses a NEMO_TOKEN and creates a session_id; the artifacts say not to print tokens and note anonymous-token expiry, but users should understand this creates an external service session.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install video-on-canva
  3. After installation, invoke the skill by name or use /video-on-canva
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
- Initial release of Video on Canva (v1.0.0): create and export polished MP4 videos from images and clips via cloud processing. - Upload images or clips (MP4, MOV, PNG, JPG, up to 500MB) and describe your desired video; receive a 1080p MP4 download. - Automatic setup with token management, session handling, and credit tracking included. - Fast, code-free workflow designed for marketers and content creators—no design software needed. - Supports batch uploads, iterative edits, promo video generation, timeline summarization, and error handling. - Intuitive prompt-based commands for exporting, checking status, credit balance, and more.
Metadata
Slug video-on-canva
Version 1.0.0
License MIT-0
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is Video On Canva?

Get polished MP4 videos ready to post, without touching a single slider. Upload your images or clips (MP4, MOV, PNG, JPG, up to 500MB), say something like "c... It is an AI Agent Skill for Claude Code / OpenClaw, with 63 downloads so far.

How do I install Video On Canva?

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

Is Video On Canva free?

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

Which platforms does Video On Canva support?

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

Who created Video On Canva?

It is built and maintained by dsewell-583h0 (@dsewell-583h0); the current version is v1.0.0.

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