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amp-audio.md

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amp-audio

A replacement for the HTML5 audio tag. Like all embedded external resources in a AMP file, the audio is lazily loaded only when the amp-audio element is in or near the viewport.

The amp-audio component is only to be used for direct HTML5 audio file embeds.

Behavior

The amp-audio component loads the audio resource specified by its src attribute lazily, at a time determined by the runtime. It can be controlled much the same way as a standard HTML5 audio tag.

The amp-audio component HTML accepts up to three unique types of HTML nodes as children - source tags, a placeholder for before the audio starts, and a fallback if the browser doesn’t support HTML5 audio.

source tag children can be used in the same way as the standard audio tag, to specify different source files to play.

One or zero immediate child nodes can have the placeholder attribute. If present, this node and its children form a placeholder that will display instead of the audio. A click or tap anywhere inside of the amp-audio container will replace the placeholder with the audio itself.

One or zero immediate child nodes can have the fallback attribute. If present, this node and its children form the content that will be displayed if HTML5 audio is not supported on the user’s browser.

For example:

<amp-audio width=400 height=300 src=”https://yourhost.com/audios/myaudio.mp3”>
  <div fallback>
    <p>Your browser doesn’t support HTML5 audio</p>
  </div>
  <source type="audio/mpeg" src="foo.mp3">
  <source type="audio/ogg" src="foo.ogg">
</amp-audio>

Attributes

autoplay

The autoplay attribute allows the author to specify when - if ever - the animated image will autoplay.

The presence of the attribute alone implies that the animated image will always autoplay. The author may specify values to limit when the animations will autoplay. Allowable values are desktop, tablet, or mobile, with multiple values separated by a space. The runtime makes a best-guess approximation to the device type to apply this value.

loop

If present, will automatically loop the audio back to the start upon reaching the end.

muted

If present, will mute the audio by default.