@bbc/psammead-media-player

psammead-media-player ·

Description

The psammead-media-player component exports two versions of our media player: an AMP version, and an Canonical version.

At its core, this component returns an iframe that is designed to frame a media asset. The AMP variant will render an amp-iframe with a nested amp-img to use as a placeholder. The Canonical variant will render a placeholder, that when clicked will load the iframe into view.

When to use this component

This component to be used at any point on the page, specifically when a media player is needed.

Installation

npm install @bbc/psammead-media-player

Props

CanonicalMediaPlayer

Argument	Type	Required	Default	Example
src	string	Yes	-	'http://foobar.com/embeddable_endpoint'
skin	string	No	'classic'	'audio'
title	string	Yes	-	'Video player'
service	string	Yes	-	'news'
showPlaceholder	boolean	No	true	false
placeholderSrc	string	No	null	'http://foobar.com/placeholder.png'
placeholderSrcset	string	No	''	'https://bbc.com/300/cat.jpg 300w, https://bbc.com/450/cat.jpg 450w, https://bbc.com/600/cat.jpg 600w'
portrait	boolean	No	false	true
mediaInfo	object	Yes	-	{ title: 'A vertical video pretending to be a cat title', duration: '2:30', durationSpoken: '2 minutes 11 seconds', datetime: 'PT2M30S' }
noJsClassName	string	No	null	'no-js'
noJsMessage	string	Yes	-	'This media cannot play in your browser. Please enable Javascript or use a different browser.'
onMediaInitialised	function	No	() => {}	() => hideLoadingIndicator()
onMediaPlaying	function	No	() => {}	() => trackMediaPlaybackStarted()
onMediaPause	function	No	() => {}	() => shrinkPlayerWindow()
onMediaEnded	function	No	() => {}	() => trackMediaPlaybackComplete()
onMediaPlaylistEnded	function	No	() => {}	() => visitNextVideoPage()
onMediaError	function	No	() => {}	() => logError()

The src prop is required, as it tells the component what page it needs to embed. The placeholderSrcset prop is not required, as it allows image responsiveness and optimization depending on the size of the screen. The title prop is required for accessibility of the embedded iframe. The portrait prop is not required, and defaults to false. This is to support portrait video content in the future. The showPlaceholder boolean prop is also not required, and defaults to true. Assuming showPlaceholder is true, the placeholderSrc will be what image to display as the placeholder. The noJsClassName is an optional prop that defaults to null and is used to add styling support to certain elements when javascript is disabled in the browser. The noJsMessage is a required prop used display a fallback text when javascript is disabled in the browser. The mediaInfo prop is required, and has the following properties.

mediaInfo

Argument	Type	Required	Default	Example
title	string	Yes	-	'A vertical video pretending to be a cat title'
datetime	string	No	-	'PT11S'
duration	string	No	-	'0:11'
durationSpoken	string	No	-	'11 seconds'
type	string	No	"video"	'audio'
guidanceMessage	string	No	-	'May contain strong language,sexual or violent content that may offend'

Events

The canonical media player accepts callback functions which it will invoke in response to events that are posted from the iframe. The following events are currently supported:

Event	Description
onMediaInitialised	Called when the media player has loaded and is ready to begin playback
onMediaPlaying	Called when the media player has started playing
onMediaPause	Called when the user has paused playback
onMediaEnded	Called when a playlist item (including an ad or an ident) has completed playback
onMediaPlaylistEnded	Called when an entire playlist has completed playback
onMediaError	Called when the media player has encountered an error

When using the BBC's iFrame, these callbacks are invoked with a lot of additional information on the nature of the event. Internal users should refer to the SMP documentation for more details

AmpMediaPlayer

Argument	Type	Required	Default	Example
src	string	Yes	-	http://foobar.com/embeddable_endpoint
placeholderSrcset	string	No	null	'https://bbc.com/300/cat.jpg 300w, https://bbc.com/450/cat.jpg 450w, https://bbc.com/600/cat.jpg 600w'
title	string	Yes	-	Video player
portrait	boolean	No	false	true
placeholderSrc	string	Yes	-	'http://foobar.com/placeholder.png'

The placeholderSrc prop is required for AMP, as in order to have the component load an amp-iframe within 600px or 75% of the viewport from the top, we must have an amp-img placeholder. For more information on this, please refer to the AMP docs for amp-iframe.

Usage

CanonicalMediaPlayer

import { CanonicalMediaPlayer } from '@bbc/psammead-media-player';

const Container = ({
  src,
  skin,
  title,
  service,
  portrait,
  showPlaceholder,
  placeholderSrc,
  placeholderSrcset,
  mediaInfo,
  noJsClassName,
  noJsMessage,
}) => (
  <CanonicalMediaPlayer
    src={src}
    skin={skin}
    title={title}
    service={service}
    portrait={portrait}
    placeholderSrc={placeholderSrc}
    placeholderSrcset={placeholderSrcset}
    showPlaceholder={showPlaceholder}
    mediaInfo={mediaInfo}
    noJsClassName={noJsClassName}
    noJsMessage={noJsMessage}
  />
);

AmpMediaPlayer

import { AmpMediaPlayer } from '@bbc/psammead-media-player';

const Container = ({
  src,
  title,
  portrait,
  placeholderSrc,
  placeholderSrcset,
}) => (
  <AmpMediaPlayer
    src={src}
    title={title}
    portrait={portrait}
    placeholderSrc={placeholderSrc}
    placeholderSrcset={placeholderSrcset}
  />
);

Accessibility notes

The title prop is important for accessibility. It is meant for the user and should be translated to match the user's language.

Contributing

Psammead is completely open source. We are grateful for any contributions, whether they be new components, bug fixes or general improvements. Please see our primary contributing guide which can be found at the root of the Psammead respository.

Code of Conduct

We welcome feedback and help on this work. By participating in this project, you agree to abide by the code of conduct. Please take a moment to read it.

License

Psammead is Apache 2.0 licensed.