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[webrtc-pc] [Question] How to recognize a new incomin track as one representing screensharing (#2647)

From: Michał Śledź via GitHub <sysbot+gh@w3.org>
Date: Thu, 29 Apr 2021 12:18:04 +0000
To: public-webrtc@w3.org
Message-ID: <issues.opened-870953488-1619698683-sysbot+gh@w3.org>
mickel8 has just created a new issue for https://github.com/w3c/webrtc-pc:

== [Question] How to recognize a new incomin track as one representing screensharing ==
Hi, I can't get one thing. There are couple of identifiers for tracks. We have `mid` `msid` for tracks but also `ssrc` `cname`  for RTP stream. How can I know that a new incoming track represents e.g. screensharing? I am asking about screensharing because in most cases it is being displayed in a different manner than other video tracks.

Should I use signaling server for this? Something like `Hey, on this track id I will send screensharing`.  In case of SFU this information has to be broadcast to all conference participants. Is there any better way? 

Please view or discuss this issue at https://github.com/w3c/webrtc-pc/issues/2647 using your GitHub account


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