ustream-embedapi
v1.0.0
Published
Enables sites using the Ustream embed iframe to build and adapt on the embed live player
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Ustream Embed API
Enables sites using the Ustream embed iframe to build and adapt on the embed live player.
The Ustream Embed API provides basic methods to control the live stream or recorded video playback, and enables the user to access essential events of the live stream or the played video.
The Ustream Embed API requires postMessage DOM API, it won't work in browsers that does not support the postMessage API.
Usage
Create an instance of the Embed API by providing the ID of the iframe, or the iframe DOM object itself:
<iframe id="UstreamIframe" src="//ustream.tv/embed/1524" width="640" height="480" allowfullscreen webkitallowfullscreen></iframe>
var viewer = UstreamEmbed('UstreamIframe');
The Ustream Embed API provides the following methods:
- callMethod
- getProperty
- addListener
- removeListener
URL parameters
The default behaviour of the player can be modified by extending the src URL with any of the following parameters:
| Parameter | Effect | Values | Default | | ------------- | ----------- | ----------- | ----------- | | allowfullscreen | Disables fullscreen and remove the button. | true/false | true | | autoplay | Starts video playback automatically. | true/false | false | | controls | Hides all UI elements. | true/false | true | | offaircontent | Disables displaying offair content. | true/false | true | | quality | Overrides the automatic quality selection. | low, med, high, auto | auto | | showtitle | Hides title and viewer count. | true/false | true | | volume | Overrides the default volume. 0 is mute, 1 is max volume. | 0.0-1.0 | user setting |
callMethod
Calls a command method of the embed player, passing in any arguments.
Available commands through callMethod
:
play
Starts playing the currently loaded channel or video.
Example:
viewer.callMethod('play');
pause
Pauses the live stream, or the playback of a video.
Example:
viewer.callMethod('pause');
stop
Pauses the live stream, or stops the video and jumps back to the start.
Example:
viewer.callMethod('stop');
load
Loads a channel or a video in the player. Requires two additional arguments:
type
- the loaded content type (channel | video)id
- the loaded content id
Example:
viewer.callMethod('load', 'video', 5903947);
viewer.callMethod('load', 'channel', 1524);
seek
Jumps to given position in played recorded video.
Requires one argument:
- position in seconds
Example:
viewer.callMethod('seek', 180);
volume
Sets the playback sound volume
Requires one argument:
- volume percent between 0-100
Example:
viewer.callMethod('volume', 0); // mute
quality
Sets the stream quality, if available.
Requires one argument:
- a
qualityID
key from received quality options inquality
event
Example:
viewer.callMethod('quality', 16); // set to high
getProperty
Read a property of the embed player.
This method is asynchronous, the data will be passed to a callback function, given as argument.
Accessible properties by getProperty
:
duration
Get the video duration in seconds.
Example:
viewer.getProperty('duration', function (duration) {
...
});
viewers
Get the current viewer count for the loaded live stream.
Example:
viewer.getProperty('viewers', function (viewerNumber) {
...
});
progress
Get the current progress for recorded video playback, in seconds.
Example:
viewer.getProperty('progress', function (progress) {
...
});
content
Get the loaded content type and id as an array.
Example:
viewer.getProperty('content', function (content) {
// content == ['channel', 1524]
// or
// content == ['recorded', 123456]
...
});
playingContent
Get the actual content type and id as an array. This will return the currently played offair video's id if the loaded content is an offair channel or with the channel id if the channel is live.
Example:
viewer.callMethod('load', 'channel', 1524);
// ...
viewer.getProperty('playingContent', function (content) {
// content == ['channel', 1524]
// - if it's live, or
// content == ['recorded', 123456]
// - if it's offair and has offair video content, or
// content == []
// - if it's offair and doesn't have offair video content
});
addListener & removeListener
The embed player dispatches several events during playback. This method adds or removes event handlers to these events.
The event handler callback receives two arguments:
type
the type of the eventdata
optional data sent along the event
Available events for addListener
and removeListener
:
live
Called when the currently loaded offline channel becomes live.
Example:
viewer.addListener('live', callBack);
offline
Called when the currently loaded live channel goes offline.
Example:
viewer.addListener('offline', callBack);
finished
Called when the currently loaded and played recorded video reaches its end.
Example:
viewer.addListener('finished', callBack);
playing
Called when the currently loaded content playback is started or stopped
Sends data along the event:
playing
(boolean)
Example:
viewer.addListener('playing', callBack);
size
Called when the stream size is available, or changed (changes reported only in flash mode)
Sent data is the size of the calculated embed iframe according to the player width, and the stream aspect ratio. The player bar height is included, if the controls are visible.
Sends data along the event:
size
(array) as [width
,height
] in pixels
Example:
viewer.addListener('size', callBack);
quality
Fired when the stream quality options are available.
Receives an object, with the qualityID
as keys, and an object with two properties as values:
label
(string) label to show to users on control UI, eg.: "480p"active
(booelan) if this quality is used or set
Example:
viewer.addListener('quality', callBack);
// example quality object
{
"0":{"label":"240p","active":false},
"1":{"label":"360p","active":false},
"2":{"label":"480p","active":false},
"16":{"label":"BEST","active":true}
}
syncedmeta
Called when a synced metadata has arrived on the stream/recorded. Used for keep presentations in sync with the live stream / recorded.
Received arguments: data (object)
Example:
viewer.addListener('syncedmeta', callBack);
content
Called when a the player content changes for some reason. Same data as received in getProperty('content')
Received arguments: data (array)
Example:
viewer.addListener('content', callBack);