Class: LocalParticipant

Extends

• Participant

Methods

---

publishTrack(localTrack [, options])

Publishes a LocalTrack to the Room.

Parameters:

Name	Type	Argument	Description
localTrack	LocalTrack		The LocalTrack to publish
options	LocalTrackPublishOptions	<optional>	The LocalTrackPublishOptions for publishing the LocalTrack

Throws:

• TypeError
• RangeError

Returns:

• Resolves with the corresponding LocalTrackPublication if successful; In a Large Group Room (Maximum Participants greater than 50), rejects with a ParticipantMaxTracksExceededError if either the total number of published Tracks in the Room exceeds 16, or the LocalTrack is part of a set of LocalTracks which along with the published Tracks exceeds 16.

Type

Promise.<LocalTrackPublication>

Example

var Video = require('twilio-video');

Video.connect(token, {
  name: 'my-cool-room',
  audio: true
}).then(function(room) {
  return Video.createLocalVideoTrack({
    name: 'camera'
  }).then(function(localVideoTrack) {
    return room.localParticipant.publishTrack(localVideoTrack, {
      priority: 'high'
    });
  });
}).then(function(publication) {
  console.log('The LocalTrack "' + publication.trackName
    + '" was successfully published with priority "'
    * publication.priority + '"');
});
  

---

publishTrack(mediaStreamTrack [, options])

Publishes a MediaStreamTrack to the Room.

Parameters:

Name	Type	Argument	Description
mediaStreamTrack	MediaStreamTrack		The MediaStreamTrack to publish; if a corresponding LocalAudioTrack or LocalVideoTrack has not yet been published, this method will construct one
options	MediaStreamTrackPublishOptions	<optional>	The options for publishing the MediaStreamTrack

Throws:

• TypeError
• RangeError

Returns:

• Resolves with the corresponding LocalTrackPublication if successful; In a Large Group Room (Maximum Participants greater than 50), rejects with a ParticipantMaxTracksExceededError if the total number of published Tracks in the Room exceeds 16, or the LocalTrack is part of a set of LocalTracks which along with the published Tracks exceeds 16.

Type

Promise.<LocalTrackPublication>

Example

var Video = require('twilio-video');

Video.connect(token, {
  name: 'my-cool-room',
  audio: true
}).then(function(room) {
  return navigator.mediaDevices.getUserMedia({
    video: true
  }).then(function(mediaStream) {
    var mediaStreamTrack = mediaStream.getTracks()[0];
    return room.localParticipant.publishTrack(mediaStreamTrack, {
      name: 'camera',
      priority: 'high'
    });
  });
}).then(function(publication) {
  console.log('The LocalTrack "' + publication.trackName
    + '" was successfully published with priority "'
    * publication.priority + '"');
});

---

publishTracks(tracks)

Publishes multiple LocalTracks to the Room.

Parameters:

Name	Type	Description
tracks	Array.<(LocalTrack|MediaStreamTrack)>	The LocalTracks to publish; for any MediaStreamTracks provided, if a corresponding LocalAudioTrack or LocalVideoTrack has not yet been published, this method will construct one

Throws:

TypeError

Returns:

• The resulting LocalTrackPublications if successful; In a Large Group Room (Maximum Participants greater than 50), rejects with a ParticipantMaxTracksExceededError if the total number of published Tracks in the Room exceeds 16, or the LocalTracks along with the published Tracks exceeds 16.

Type

Promise.<Array.<LocalTrackPublication>>

---

setNetworkQualityConfiguration(networkQualityConfiguration)

Sets the NetworkQualityVerbosity for the LocalParticipant and RemoteParticipants. It does nothing if Network Quality is not enabled while calling connect.

Parameters:

Name	Type	Description
networkQualityConfiguration	NetworkQualityConfiguration	The new NetworkQualityConfiguration; If either or both of the local and remote NetworkQualityVerbosity values are absent, then the corresponding existing values are retained

Returns:

Type

this

Examples

// Update verbosity levels for both LocalParticipant and RemoteParticipants
localParticipant.setNetworkQualityConfiguration({
  local: 1,
  remote: 2
});

// Update verbosity level for only the LocalParticipant
localParticipant.setNetworkQualityConfiguration({
  local: 1
});
 

// Update verbosity level for only the RemoteParticipants
localParticipant.setNetworkQualityConfiguration({
  remote: 2
});

---

setParameters( [encodingParameters])

Set the LocalParticipant's EncodingParameters.

Parameters:

Name	Type	Argument	Description
encodingParameters	EncodingParameters	<optional> <nullable>	The new EncodingParameters; If null, then the bitrate limits are removed; If not specified, then the existing bitrate limits are preserved

Throws:

TypeError

Returns:

Type

this

---

unpublishTrack(track)

Stops publishing a LocalTrack to the Room.

Parameters:

Name	Type	Description
track	LocalTrack | MediaStreamTrack	The LocalTrack to stop publishing; if a MediaStreamTrack is provided, this method looks up the corresponding LocalAudioTrack or LocalVideoTrack to stop publishing

Throws:

TypeError

Returns:

• The corresponding LocalTrackPublication if the LocalTrack was previously published, null otherwise

Type

LocalTrackPublication

---

unpublishTracks(tracks)

Stops publishing multiple LocalTracks to the Room.

Parameters:

Name	Type	Description
tracks	Array.<(LocalTrack|MediaStreamTrack)>	The LocalTracks to stop publishing; for any MediaStreamTracks provided, this method looks up the corresponding LocalAudioTrack or LocalVideoTrack to stop publishing

Throws:

TypeError

Returns:

• The corresponding LocalTrackPublications that were successfully unpublished

Type

Array.<LocalTrackPublication>

Events

---

disconnected

The Participant has disconnected.

Parameters:

Name	Type	Description
participant	Participant	The Participant that disconnected.

Inherited From:

• Participant#event:disconnected

Overrides:

• Participant#event:disconnected

---

networkQualityLevelChanged

The Participant's NetworkQualityLevel changed.

Parameters:

Name	Type	Argument	Description
networkQualityLevel	NetworkQualityLevel		The new NetworkQualityLevel
networkQualityStats	NetworkQualityStats	<nullable>	The NetworkQualityStats based on which NetworkQualityLevel is calculated, if any

Inherited From:

• Participant#event:networkQualityLevelChanged

Overrides:

• Participant#event:networkQualityLevelChanged

---

reconnected

The LocalParticipant has reconnected to the Room after a signaling connection disruption.

Overrides:

• Participant#event:reconnected

---

reconnecting

The LocalParticipant is reconnecting to the Room after a signaling connection disruption.

Overrides:

• Participant#event:reconnecting

---

trackDimensionsChanged

One of the LocalParticipant's LocalVideoTrack's dimensions changed.

Parameters:

Name	Type	Description
track	LocalVideoTrack	The LocalVideoTrack whose dimensions changed

Overrides:

• Participant#event:trackDimensionsChanged

---

trackDisabled

A LocalTrack was disabled by the LocalParticipant.

Parameters:

Name	Type	Description
track	LocalTrack	The LocalTrack that was disabled

---

trackEnabled

A LocalTrack was enabled by the LocalParticipant.

Parameters:

Name	Type	Description
track	LocalTrack	The LocalTrack that was enabled

---

trackPublicationFailed

A LocalTrack failed to publish. Check the error message for more information. In a Large Group Room (Maximum Participants greater than 50), this event is raised with a ParticipantMaxTracksExceededError either when attempting to publish the LocalTrack will exceed the Maximum Published Tracks limit of 16, or the LocalTrack is part of a set of LocalTracks which along with the published Tracks exceeds 16.

Parameters:

Name	Type	Description
error	TwilioError	A TwilioError explaining why publication failed
localTrack	LocalTrack	The LocalTrack that failed to publish

---

trackPublished

A LocalTrack was successfully published.

Parameters:

Name	Type	Description
publication	LocalTrackPublication	The resulting LocalTrackPublication for the published LocalTrack

---

trackStarted

One of the LocalParticipant's LocalTracks started.

Parameters:

Name	Type	Description
track	LocalTrack	The LocalTrack that started

Overrides:

• Participant#event:trackStarted

---

trackStopped

One of the LocalParticipant's LocalTracks stopped, either because LocalTrack#stop was called or because the underlying MediaStreamTrack ended).

Parameters:

Name	Type	Description
track	LocalTrack	The LocalTrack that stopped