---
title: "Portal"
description: "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
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
<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`.

{/* hf:generated-footer */}

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)