[Webkit-unassigned] [Bug 230970] New: MediaSource SourceBuffer never fires any event beyond updatestart

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=230970

            Bug ID: 230970
           Summary: MediaSource SourceBuffer never fires any event beyond
                    updatestart
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: gsnedders at apple.com
                CC: jer.noble at apple.com,
                    webkit-bug-importer at group.apple.com

Created attachment 439627

  --> https://bugs.webkit.org/attachment.cgi?id=439627&action=review

testcase (but needs file from WPT)

Loading the attached test over HTTPS from the web-platform-test server/directory gives:

Resource fetch success
[object MediaSource]: sourceopen
[object SourceBuffer]: updatestart

This isn't an acceptable output, as far as I can tell; there should always be an updateend event (and either an update or error event between them). This is causing a fair few WPT tests to timeout in Safari, so this would be good to improve.

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