[Webkit-unassigned] [Bug 180476] New: rfc8361 mime-type codecs parameter ignored in <source type>

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=180476

            Bug ID: 180476
           Summary: rfc8361 mime-type codecs parameter ignored in <source
                    type>
           Product: WebKit
           Version: Safari 11
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: colin at bendell.ca

Safari ignores the codecs parameter when evaluating contenttype in picture and video source tags.
https://colinbendell.github.io/webperf/video-source-type-codecs/index2.html

<video muted autoplay inline>
    <source src="Ottawa_River-invalid.webm"
            type="video/webm;codecs=invalid">
    <source src="Ottawa_River-invalid.mp4"
            type="video/mp4;codecs=invalid">

    <source src="Ottawa_River-h264.mp4"
            type="video/mp4;codecs=avc1">

</video>

Safari picks the first mp4 while chrome currently only selects the avc1 entry. Firefox rejects all of them.

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