[Webkit-unassigned] [Bug 195124] New: Call was negotiated with H264 Base Profile 42e01f but encoded in High Profile

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=195124

            Bug ID: 195124
           Summary: Call was negotiated with H264 Base Profile 42e01f but
                    encoded in High Profile
           Product: WebKit
           Version: Safari 12
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lcheng at compunetix.com
                CC: youennf at gmail.com

Problem:

  In a WebRTC call, the local SDP from Safari claims supporting video codec H264 with profile-level-id 42e01f which is the Base Profile. The remote SDP also supports video codec H264 with profile-level-id 42c01f which is also the Base Profile. In this case, both sides should agree on H264 Base Profile. However, we observed the Safari browser is sending High Profile stream instead.

Expected:

  H264 Base Profile stream is important for many video systems. Please fix this issue by sending Base Profile stream according to the negotiated profile-level-id. Or please let us know how to configure Safari browser to send Base Profile stream only.

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