W3C home > Mailing lists > Public > public-webrtc@w3.org > September 2014

RE: replaceTrack proposal

From: Bernard Aboba <Bernard.Aboba@microsoft.com>
Date: Mon, 8 Sep 2014 17:35:37 +0000
To: Stefan Håkansson LK <stefan.lk.hakansson@ericsson.com>, Jan-Ivar Bruaroey <jib@mozilla.com>, "public-webrtc@w3.org" <public-webrtc@w3.org>
Message-ID: <956a8745d8c249d2aebb5249f1f7d49d@SN2PR03MB031.namprd03.prod.outlook.com>
Stefan said: 

"Also, just checking, are the RTP guys OK with switching source (I had
the impression that there was a tight correlation between a camera and
an SSRC, but may remember wrongly)?"

[BA] I would say that an RTCRtpSender and the sending SSRC are closely related.  So if both cameras were sending at once, you'd have two RTCRtpSender objects, each with different SSRCs. 
However, I don't think there is a close relationship between an MST and an SSRC - the SSRC really only comes into play once the MST is encoded (e.g. that's why we have RTCRtpEncodingParameters.ssrc).  
Received on Monday, 8 September 2014 17:36:06 UTC

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