Agent skill

Render Video

Workflow for rendering a Helios composition to a video file.

Apache-2.0Auto-check passedMedia & Creative

Install Render Video

skills CLI

$ npx skills add BintzGavin/helios --skill render-video -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios render-video --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/render-video .claude/skills/render-video && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "render-video" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video into .claude/skills/render-video/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "render-video", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add BintzGavin/helios --skill render-video -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios render-video --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/render-video .agents/skills/render-video && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "render-video" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video into .agents/skills/render-video/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "render-video", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BintzGavin/helios --skill render-video -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios render-video --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/render-video .cursor/skills/render-video && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "render-video" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video into .cursor/skills/render-video/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "render-video", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/BintzGavin/helios.git --path .agents/skills/helios-skills/skills/workflows/render-video

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add BintzGavin/helios --skill render-video -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios render-video --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/render-video .gemini/skills/render-video && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "render-video" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video into .gemini/skills/render-video/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "render-video", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install BintzGavin/helios render-video

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add BintzGavin/helios --skill render-video -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/render-video .github/skills/render-video && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "render-video" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video into .github/skills/render-video/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "render-video", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BintzGavin/helios --skill render-video -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install BintzGavin/helios render-video --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BintzGavin/helios.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/helios-skills/skills/workflows/render-video .opencode/skills/render-video && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "render-video" agent skill from https://github.com/BintzGavin/helios/tree/main/.agents/skills/helios-skills/skills/workflows/render-video into .opencode/skills/render-video/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "render-video", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: render-video
GitHub stars: 118
Token cost: ~794 tokens
SKILL.md length: 192 words
Files: 1
Skills in repo: 16
Repo updated: Oct 7, 2026
First seen: Oct 7, 2026
Licence: Apache-2.0

At a glance

Workflow for rendering a Helios composition to a video file.

Works in 3 steps: Prerequisites → Create Render Script → Run Render
You need to automate video production
SKILL.md covers 1. Prerequisites, 2. Create Render Script, 3. Run Render and Troubleshooting
Calls npx, node and npm

What it does

Render Video is an agent skill from BintzGavin/helios. Workflow for rendering a Helios composition to a video file. Use when you need to automate video production or export a high-quality animation.

Its SKILL.md is about 790 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Media & Creative, covering Video production. The repository describes itself as: Programmatic video creation with web technologies you already know. CSS animations just work. The licence is Apache-2.0.

When your agent uses it

You need to automate video production
Export a high-quality animation

Example prompts

“/render-video”

Requirements

Node.js

Workflow steps

3 steps, taken from the step headings in SKILL.md.

Prerequisites
Create Render Script
Run Render

What it can do on your machine

Read from SKILL.md and the folder at commit 0fb7335. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- npx
- node
- npm
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use npx and npm, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Render Video loads about 794 tokens when it runs. Until then it costs about 39 tokens; SKILL.md has 192 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~39
When it runs · the whole SKILL.md, loaded when a task matches: ~794

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from BintzGavin/helios at commit 0fb7335, republished under its Apache-2.0 licence (© BintzGavin). 192 words, ~794 tokens.

Download SKILL.mdSave it as .claude/skills/render-video/SKILL.md (or your agent's skills folder).

name: render-video
description: Workflow for rendering a Helios composition to a video file. Use when you need to automate video production or export a high-quality animation.

Render Video Workflow

Rendering is the process of capturing a composition frame-by-frame and encoding it into a video file (e.g., MP4). This is done using the @helios-project/renderer package in a Node.js environment.

1. Prerequisites

Ensure your composition is running. The renderer needs a URL to access the composition.

Locally: npm run dev (e.g., http://localhost:3000/composition.html)
Remote: Any accessible URL.

2. Create Render Script

Create a file named render.js (or render.ts if using ts-node).

typescript

import { Renderer } from '@helios-project/renderer';
import path from 'path';

async function main() {
    // 1. Configuration
    const compositionUrl = 'http://localhost:3000/composition.html';
    const outputPath = path.resolve('output.mp4');

    // 2. Initialize Renderer
    const renderer = new Renderer({
        width: 1920,
        height: 1080,
        fps: 30,
        durationInSeconds: 10,
        // frameCount: 300, // Optional: Override durationInSeconds with exact frame count
        mode: 'canvas', // Use 'dom' if your animation uses CSS/HTML elements

        // Audio Configuration
        audioTracks: [
            { path: 'background.mp3', volume: 0.5 },
            { path: 'voiceover.wav', offset: 2 }
        ],
        audioCodec: 'aac',

        // Input Props (Dynamic Content)
        inputProps: {
            title: "Custom Render",
            color: "#00ff00"
        }
    });

    console.log(`Starting render of ${compositionUrl}...`);

    // 3. Execute Render
    try {
        await renderer.render(compositionUrl, outputPath, {
            onProgress: (p) => {
                const percent = Math.round(p * 100);
                process.stdout.write(`\rProgress: ${percent}%`);
            }
        });
        console.log(`\nDone! Saved to ${outputPath}`);
    } catch (err) {
        console.error('\nRender failed:', err);
        process.exit(1);
    }
}

main();

3. Run Render

Execute the script.

bash

# If using ts-node
npx ts-node render.ts

# If using node (compiled js)
node render.js

Troubleshooting

"Page timeout" or "Connection refused"

Ensure the local server hosting the composition is running.
Check if the URL is correct and accessible in a regular browser.

"Black output" or "Empty video"

Ensure helios.bindToDocumentTimeline() is called in your composition.
Ensure window.helios is exposed.
If using mode: 'canvas', ensure you are drawing to a <canvas> element.
If using mode: 'dom', ensure elements are visible.

"Render hangs"

Check if the composition has errors in the browser console.

Enable tracing to debug:

typescript

await renderer.render(url, out, { tracePath: 'trace.zip' });

Audio Issues

Ensure audio file paths are correct relative to where the script is run.
If using mode: 'dom' and relying on implicit audio (e.g. <audio> tags), ensure the elements are present in the DOM.

Files

Just SKILL.md in .agents/skills/helios-skills/skills/workflows/render-video of BintzGavin/helios.

Open the folder on GitHubat commit 0fb7335

Compare with similar skills

Render Video next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Render Video compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Render Video this skillBintzGavin/helios	118	—	~794	Automated safety check: Pass	Apache-2.0	yesterday
HyperFrames Animationheygen-com/hyperframes	59k	3 repos	~2.1k	Automated safety check: Pass	Apache-2.0	today
Stitch to Remotion Walkthrough Videosgoogle-labs-code/stitch-skills	8.4k	6 repos	~3.2k	Automated safety check: Notes	Apache-2.0	1 mo ago
Faceless Explainer Videoheygen-com/hyperframes	59k	3 repos	~7.7k	Automated safety check: Notes	Apache-2.0	today
Video Understandcalesthio/OpenMontage	65k	—	~841	Automated safety check: Pass	AGPL-3.0	5 days ago
Video ShotcraftVincentwei1021/video-shotcraft	11k	—	~2.6k	Automated safety check: Pass	Apache-2.0	3 days ago

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HyperFrames Animation
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59k GitHub starsUsed in 3 repos~2.1k tokens
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Video Understand
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Video Shotcraft
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Questions about Render Video

What does Render Video do?

Workflow for rendering a Helios composition to a video file. Render Video is an agent skill from BintzGavin/helios. Workflow for rendering a Helios composition to a video file.

When should I use Render Video?

Render Video fits situations like: you need to automate video production; export a high-quality animation.

How do I install Render Video in Claude Code?

Run `npx skills add BintzGavin/helios --skill render-video -a claude-code`. Or copy the skill folder (.agents/skills/helios-skills/skills/workflows/render-video in BintzGavin/helios) into .claude/skills/render-video in your project. Claude Code loads it when a task matches its description.

How do I install Render Video in Codex?

Run `npx skills add BintzGavin/helios --skill render-video -a codex`. Or copy the skill folder (.agents/skills/helios-skills/skills/workflows/render-video in BintzGavin/helios) into .agents/skills/render-video in your project. Codex loads it when a task matches its description.

Can I use Render Video in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add BintzGavin/helios --skill render-video -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/render-video, .gemini/skills/render-video, .github/skills/render-video and .opencode/skills/render-video in your project.

What does Render Video need to run?

Going by SKILL.md and its folder, Render Video needs the command-line tools its instructions call (npx, node and npm). Our summary lists: Node.js.

Does Render Video access the network?

SKILL.md contains no URLs. Its commands use npx and npm, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Render Video safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Render Video use?

Render Video is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Render Video use?

About 794 tokens (SKILL.md is roughly 3.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Render Video?

Skills that share tags, products or a category with Render Video: HyperFrames Animation (heygen-com/hyperframes, 59k stars), Stitch to Remotion Walkthrough Videos (google-labs-code/stitch-skills, 8.4k stars), Faceless Explainer Video (heygen-com/hyperframes, 59k stars) and Video Understand (calesthio/OpenMontage, 65k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Render Video?

BintzGavin (a GitHub user) maintains it in BintzGavin/helios, which has 118 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on October 7, 2026.

Source: BintzGavin/helios on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Render Video

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Render Video Workflow

1. Prerequisites

2. Create Render Script

3. Run Render

Troubleshooting

"Page timeout" or "Connection refused"

"Black output" or "Empty video"

"Render hangs"

Audio Issues

Files

Compare with similar skills

Similar skills

More from BintzGavin/helios

Related

Questions about Render Video