[Webkit-unassigned] [Bug 122659] New: Remove old cues from live sources

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122659

           Summary: Remove old cues from live sources
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: b.long at cablelabs.com


With in-band text tracks, it's possible for a live source to continue adding cues for an indefinite period of time. It would be useful if cues could be removed when they're not useful anymore.

One option is to periodically check the cues and remove cues that are past their end time by a certain amount. Or maybe we could detect when we're looking at live content and remove cues in their onexit events (or set a timeout to remove them a couple seconds after)?

The hardest part for is figuring out how to test this. I'm sure I can figure out a generate a live stream on my machine, but I'm not sure how to do that in a layout test.

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