> ## Documentation Index > Fetch the complete documentation index at: https://hyperframes.heygen.com/llms.txt > Use this file to discover all available pages before exploring further. # HyperFrames FAQ > Short answers to the questions people ask most about HyperFrames: cost, which agent to use, Windows, Studio, Remotion, rendering, audio, and fonts. Short answers to the questions people ask the docs assistant most often. Each answer links to the page with the details. ## Is HyperFrames free? Yes. The framework, CLI, and skills are open source under Apache 2.0, and rendering on your own computer is free and needs no account. Your AI agent's plan and optional HeyGen-hosted features, such as HeyGen voices, avatars, and cloud rendering, bill through their own accounts. See [what's free and what HeyGen adds](https://hyperframes.heygen.com/guides/voice-and-audio.md#free-or-heygen-quality), and [Make videos with a free agent](https://hyperframes.heygen.com/guides/free-agents.md) for an agent that costs nothing. ## Can I use HyperFrames commercially? Yes. The [Apache 2.0 license](https://github.com/heygen-com/hyperframes/blob/main/LICENSE) lets you use, change, and distribute HyperFrames, including in commercial work, under its terms. Media you add, such as fonts, music, or footage, keeps its own license. ## Which AI agent should I use? Any coding agent that supports skills works, including Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot, Google Antigravity, IBM Bob, and OpenCode. If you have none yet, start with Claude Code or Codex. Setup guides: [Claude Code](https://hyperframes.heygen.com/guides/with-claude-code.md), [Codex](https://hyperframes.heygen.com/guides/with-codex.md), [Cursor](https://hyperframes.heygen.com/guides/with-cursor.md), and [other agents](https://hyperframes.heygen.com/guides/skills.md). ## Can I use it in the Claude or ChatGPT chat app? Yes, through the hosted HyperFrames connector. It creates and renders videos in your HeyGen account, with nothing installed on your computer. You give up the local project folder and Studio. Your chat product's plan decides whether you can add a custom connector. See [Make videos in Claude.ai or ChatGPT](https://hyperframes.heygen.com/guides/mcp.md). ## How do I install it? For Claude Code, install the plugin: ```bash theme={null} claude plugin marketplace add heygen-com/hyperframes claude plugin install hyperframes@hyperframes ``` For most other agents, run `npx skills add heygen-com/hyperframes` and choose **Core Skills**. Then start a new agent session. See [Make your first video](https://hyperframes.heygen.com/quickstart.md). ## Do I need a HeyGen account or API key? Not to make and render videos on your computer. You need one for HeyGen voices and music, avatars, cloud rendering, the hosted connector, and the Studio app. Sign in with `npx hyperframes auth login`. See [Authentication and API keys](https://hyperframes.heygen.com/guides/authentication.md). ## Does HyperFrames work on Windows? The CLI and the agent skills run on Windows, including rendering from PowerShell. The HyperFrames Studio app is available for Mac and Linux only. On Windows, edit in the browser editor with `npx hyperframes preview`. For WSL rendering tips, see [The render is slow under WSL2](https://hyperframes.heygen.com/help.md#the-render-is-slow-under-wsl2). ## What is the difference between the Studio app and the browser editor? The **Studio app** is a desktop app for Mac and Linux: a chat with your agent, a preview, and an editor in one window, with no terminal needed. The **browser editor** is the editor that opens from any project when you run `npx hyperframes preview`. Both edit the same project files. See [Get the Studio app](https://hyperframes.heygen.com/studio-app.md) and [Edit in the browser editor](https://hyperframes.heygen.com/studio.md). ## How is HyperFrames different from Remotion? Remotion videos are React components. HyperFrames videos are HTML, CSS, and JavaScript, timed with data attributes and a paused animation timeline. HyperFrames does not use or run Remotion. See [HyperFrames vs Remotion](https://hyperframes.heygen.com/guides/hyperframes-vs-remotion.md) and [Move from Remotion to HyperFrames](https://hyperframes.heygen.com/prompting/remotion-migration.md). ## How do I preview and render a video? Inside the project folder, open the live preview: ```bash theme={null} npx hyperframes preview ``` Then render the MP4: ```bash theme={null} npx hyperframes render --output final.mp4 ``` Rendering needs FFmpeg. Run `npx hyperframes doctor` to check your machine. See [Render from the command line](https://hyperframes.heygen.com/guides/rendering.md). ## How long does a render take? It depends on length, resolution, and effects. In one measured example, a 300-frame 1920×1080 composition rendered in 9.8 seconds, and in 25 seconds with one expensive CSS declaration left in. Use `--quality draft` for a faster review render. See [Fix a slow preview or render](https://hyperframes.heygen.com/guides/performance.md). ## Can it add voiceover, music, and sound effects? Yes. Ask the agent for them in your request. With a HeyGen account it uses HeyGen voices and a 10,000-track music catalog. Without one, voice uses Kokoro on your computer, music is tracks you add (or local generation if you install it), and sound effects come from a bundled set. See [Add voiceover, music, sound effects and captions](https://hyperframes.heygen.com/guides/voice-and-audio.md). ## Can it add captions to my video? Yes. Give the agent your talking-head footage and ask for captions. It transcribes the speech, times each word, and adds captions without changing the footage. See [Add captions to a video with AI](https://hyperframes.heygen.com/guides/captions-and-recuts.md). ## Can I use my own fonts? Yes. Put the font file in the project and declare it with `@font-face`. A font the project does not declare can fall back to a default face in the render, and `npx hyperframes lint` reports it. See the [font lint rules](https://hyperframes.heygen.com/reference/lint-rules.md#fonts). ## Can I render in the cloud or on my own servers? Yes. `hyperframes cloud render` renders on HeyGen's cloud and bills credits to your HeyGen account. You can also render on your own AWS Lambda or Google Cloud Run, or in Docker. See [Choose a rendering path](https://hyperframes.heygen.com/deploy/overview.md). ## Does HyperFrames send my video to HeyGen? Not when you preview and render locally: the project stays on your computer. Cloud rendering uploads the project to HeyGen, and the hosted connector builds it in your HeyGen account. The CLI sends usage data, such as command names and render performance, which stays anonymous until you sign in. It never sends project names or video content. Turn it off with `npx hyperframes telemetry disable`. Your AI agent sends your prompts to its own provider. See [the telemetry reference](https://hyperframes.heygen.com/packages/cli.md#telemetry). ## Something failed. What do I check first? Run these in the project folder and give the agent the full output: ```bash theme={null} npx hyperframes doctor npx hyperframes lint npx hyperframes check ``` See [Troubleshooting](https://hyperframes.heygen.com/help.md) for specific errors, and [Share feedback](https://hyperframes.heygen.com/help.md#share-feedback) to report a bug. ## Related topics - [What is HyperFrames?](https://hyperframes.heygen.com/introduction.md) - [Build on HyperFrames](https://hyperframes.heygen.com/developers/index.md) - [Contribute to HyperFrames](https://hyperframes.heygen.com/contributing.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.