[Webkit-unassigned] [Bug 48054] New: Implement startOffsetTime (after the new HTML5 media spec update)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=48054

           Summary: Implement startOffsetTime (after the new HTML5 media
                    spec update)
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://www.whatwg.org/specs/web-apps/current-work/mult
                    ipage/video.html#dom-media-startoffsettime
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Media Elements
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: odin.omdal+webkit at gmail.com


The HTML5 spec was updated a while ago, I couldn't find any bug tracking that so this is not connected to a master-bug for it.

Anyway, I'm pushing startOffsetTime because I need it for my webapp :-) You also need to fix your startTime, because now it doesn't conform to spec.


This was my original bug (use case) to the WHATWG and browsers:

I stream conferences using Ogg Theora+Vorbis using Icecast2. I have built a
site that shows the video and then automatically shows the slides (as PNG
files) as well. I use orbited (COMET) to have the server PUSH my «next»
presses on my keyboard.

The problem is that icecast does heavy buffering, and also the client, so
that while I switch the slides, the browser will go from slide 3 to 4 WAY
too early (from 10 second to 1 minute).

If I could get the timestamp OR time-since-started-sending/recording from
the ogg file in javascript, I'd be able to sync everything.

There are multiple way to sync this, may even an stream with the slide-data
INSIDE the ogg file, however, AFAIK there's also no way of getting out such
arbitrary streams.

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