> ## Documentation Index
> Fetch the complete documentation index at: https://hyperframes-canary-calibration-notes.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Portal

> VFX composition block

<video className="w-full aspect-video rounded-xl object-cover bg-zinc-100 dark:bg-zinc-800" src="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-portal.mp4" poster="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/vfx-portal.png" autoPlay muted loop playsInline />

## Install

```bash Terminal theme={null}
npx hyperframes add vfx-portal
```

That writes one file: `compositions/vfx-portal.html`.

<Warning>
  Live preview needs the `chrome://flags/#canvas-draw-element` flag switched on.
  Rendering from the CLI switches it on for you. [How it
  works](/guides/html-in-canvas)
</Warning>

## Add it to your video

It runs for 10 seconds at 1920×1080. Paste this into your composition:

```html index.html theme={null}
<div
  data-composition-id="vfx-portal"
  data-composition-src="compositions/vfx-portal.html"
  data-start="0"
  data-duration="10"
  data-track-index="1"
  data-width="1920"
  data-height="1080"
></div>
```

Move it in time with `data-start`. Put it on a different timeline row with
`data-track-index`. See [data attributes](/concepts/data-attributes) for the rest.

## Change the colors

Set these CSS variables on the block:

* `--bg-color` — Background. Defaults to `#000000`.
* `--portal-color` — Portal color. Defaults to `#fafafa`.

Tagged `html-in-canvas` `webgl`.

## Related topics

* [Browse the complete Catalog](/catalog)
* [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
* [Build a richer composition](/go-further)