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Right now in "room.on('trackAdded')", I can't tell if the track which was added is a screenshare or not. Is there a way to tell?

y_arl
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2 Answers2

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Thank you, @philnash, I was using suggested behaviour.

But with Twilio 2.x it seems to be broken. And according to documentation it's required to specify options (add a name) during local track creation:

const newScreenLocalTrack = new Twilio.Video.LocalVideoTrack(newScreenTrack, {name: 'screen'})

and then just publish created track without any options:

localParticipant.publishTrack(newScreenLocalTrack)
Liana Gukasyan
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  • Thank you @Liana! Your answer is really helpful! – Mina Djuric Nov 14 '19 at 14:48
  • Thank you Liana! This is much better than philnash's answer as this sets the name pre-publishing the track. Allowing to store the track in various places pre-publishing, and manipulating it in other ways. – danefondo Oct 07 '20 at 13:27
8

Twilio developer evangelist here.

As far as I am aware each track is either a VideoTrack or an AudioTrack. A screenshare will be a VideoTrack, but other than that there is nothing to tell it apart from another VideoTrack from a camera source.

Edit

After some further research I've found the following:

You can set a name for LocalTracks which shows up on the remote side. For example, if you create a new MediaStreamTrack which is the screen, and publish that track to your local participant, then you can set a name for it.

localParticipant.publishTrack(screenVideoTrack, { name: 'screen' })

Then, when you receive the trackAdded event you can inspect the track's name property:

room.on('trackAdded', (track, participant) => {
  console.log(track.name);
});
philnash
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  • This is not helpful at all. I need to place user's camera feed at one location and screen feed at a different one. There should be a way to tell which is which and who's camera and screen it is. – Nishant Sep 05 '18 at 17:25
  • @Nishant you made me question myself, thank you. Turns out you can tell, by setting a name for the tracks. See the edit to my answer. – philnash Sep 06 '18 at 01:52
  • ha ha, I got it figured, came here to add to the answer. Glad to see you've done it better. Thanks +1. – Nishant Sep 06 '18 at 03:17