[Webkit-unassigned] [Bug 231017] New: [MSE][GStreamer] Allow infinite duration on MSE

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=231017

            Bug ID: 231017
           Summary: [MSE][GStreamer] Allow infinite duration on MSE
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: eocanha at igalia.com

Positive infinite duration isn't properly working on MSE in the glib (GStreamer) ports. When such a duration is set, nothing happens and the default zero duration remains. This can break some live streams.

My test case was a live stream in a player based on dash.js 4.0.0. The duration is set to infinity (but remains as zero due to the bug) and an initial seek to the current (huge) position is done. The wrong duration has influence in the real seek target time used[1], so the seek may end up being done to the wrong time (before the buffered ranges in my case) and the playback never starts.

[1] https://github.com/WebKit/WebKit/blob/a12c487/Source/WebCore/html/HTMLMediaElement.cpp#L3153

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