[Webkit-unassigned] [Bug 274269] New: RTCRtpContributingSource.timestamp not using correct base

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=274269

            Bug ID: 274269
           Summary: RTCRtpContributingSource.timestamp not using correct
                    base
           Product: WebKit
           Version: Safari 17
          Hardware: Mac (Apple Silicon)
                OS: macOS 14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: deadbeef at google.com
                CC: youennf at gmail.com

This timestamp is defined as "Performance.timeOrigin + Performance.now()" at the time the source was observed, but it seems to be using some other clock base.

As a result it's not possible to calculate the difference between RTCRtpContributingSource.timestamp in the current time to learn how long ago a source was observed.

I actually tested this with getSynchronizationSources, but I would assume the issue exists with getContributingSources as well

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