ReferenceButtons

media-fullscreen-button

Accessible fullscreen toggle button with keyboard support and state reflection

Import

import '@videojs/html/ui/fullscreen-button';

Anatomy

<media-fullscreen-button></media-fullscreen-button>

Behavior

Toggles fullscreen mode. The button derives two state hooks from availability:

disabled (true until fullscreen is available, or when the disabled prop is set) — sets aria-disabled="true" and data-disabled. A prop-disabled, available button stays focusable but does not activate.
hidden (true while fullscreen is "unavailable" or "unsupported") — applies the native HTML hidden attribute on the custom element.

Styling

You can style the button based on fullscreen state:

/* In fullscreen */
media-fullscreen-button[data-fullscreen] {
  background: red;
}

/* Non-interactive (disabled prop) */
media-fullscreen-button[data-disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

The button remains hidden until fullscreen is available.

The element receives the native hidden attribute. No extra CSS is required.

Accessibility

Renders a <button> with an automatic aria-label: “Enter fullscreen” or “Exit fullscreen”. Override with the label prop. Keyboard activation: Enter / Space.

Examples

Basic Usage

Exit Fullscreen Fullscreen

<video-player class="video-player">
  <media-container>
    <video src="https://stream.mux.com/BV3YZtogl89mg9VcNBhhnHm02Y34zI1nlMuMQfAbl3dM/highest.mp4" autoplay muted playsinline loop></video>
    <media-fullscreen-button class="media-fullscreen-button">
      <span class="fullscreen">Exit Fullscreen</span>
      <span class="not-fullscreen">Fullscreen</span>
    </media-fullscreen-button>
  </media-container>
</video-player>

.video-player media-container {
  position: relative;
  display: block;
}

.video-player media-container video {
  width: 100%;
}

.media-fullscreen-button {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding-block: 8px;
  padding-inline: 20px;
  color: black;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 9999px;
  backdrop-filter: blur(10px);
}

.media-fullscreen-button .fullscreen {
  display: none;
}
.media-fullscreen-button .not-fullscreen {
  display: none;
}
.media-fullscreen-button[data-fullscreen] .fullscreen {
  display: inline;
}
.media-fullscreen-button:not([data-fullscreen]) .not-fullscreen {
  display: inline;
}

import '@videojs/html/video/player';
import '@videojs/html/ui/container';
import '@videojs/html/ui/fullscreen-button';

API Reference

Props

Prop	Type	Default
`disabled`	`boolean`	`false`
Description Whether the button is disabled.
`label`	`object`	`''`
Description Custom label for the button. Type `{ key: string; text: string } \| string \| ((state: FullscreenButtonState) => Text \| string)`

State

State is reflected as data attributes for CSS styling.

Property	Type	Details
`fullscreen`	`boolean`
Description Whether fullscreen mode is currently active.
`label`	`{ key: string; text: string } \| string`
`availability`	`MediaFeatureAvailability`
Description Whether fullscreen can be requested on this platform.
`disabled`	`boolean`
Description Non-interactive but still focusable (mirrors `aria-disabled`).
`hidden`	`boolean`
Description Whether the button is hidden until fullscreen is available.

Data attributes

Attribute	Type	Details
`data-fullscreen`	—
Description Present when fullscreen mode is active.
`data-availability`	`MediaFeatureAvailability`
Description Indicates fullscreen availability (`available`, `unavailable`, `unsupported`).
`data-disabled`	—
Description Present when the button is non-interactive (mirrors `aria-disabled`).
`data-hidden`	—
Description Present when the button is hidden because fullscreen is not available.