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Re: [webrtc-pc] Using codecPayloadType with addTransceiver()

From: Bernard Aboba via GitHub <sysbot+gh@w3.org>
Date: Fri, 19 Oct 2018 16:29:36 +0000
To: public-webrtc-logs@w3.org
Message-ID: <issue_comment.created-431421369-1539966575-sysbot+gh@w3.org>
@henbos In ORTC, preferredPayloadType is provided in getCapabilities(), which would help the application to correctly choose (and for the user-agent to interpret) the codecPayloadType provided in sendEncodings.

Codec payload types vary between m-lines because in SDP codec are assigned a unique payload type and payload types can't overlap within a BUNDLE group.  Things are a bit looser in ORTC, since there the only requirement is that it be possible to determine which RtpReceiver an inbound RTP packet is for. 

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