[webrtc-pc] Pull Request: Define the reference clock used for RTCRtpContributingSource.timestamp from Taylor Brandstetter via GitHub on 2018-04-25 (public-webrtc-logs@w3.org from April 2018)

From: Taylor Brandstetter via GitHub <sysbot+gh@w3.org>
Date: Wed, 25 Apr 2018 23:55:50 +0000
To: public-webrtc-logs@w3.org
Message-ID: <pull_request.opened-184193218-1524700549-sysbot+gh@w3.org>

taylor-b has just submitted a new pull request for https://github.com/w3c/webrtc-pc:

== Define the reference clock used for RTCRtpContributingSource.timestamp ==
Fixes #1690 and #1497.

Following the decision at the January VI, this timestamp uses
performance.timeOrigin + performance.now() (matching
RTCStats.timestamp).

This will allow an application to tell "how long ago did media from
this source play?", whereas previously it was only defined as "a
local clock", which meant it only supported comparing timestamps
between sources.

Also replacing "playout of an RTP packet containing the source"
with "playout of media originating from this source", since you
don't really "play out" an RTP packet directly.

See https://github.com/w3c/webrtc-pc/pull/1854

Received on Wednesday, 25 April 2018 23:56:04 UTC