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[Bug 29271] New: [MSE] No way to implement sliding window for DVR

From: <bugzilla@jessica.w3.org>
Date: Mon, 09 Nov 2015 15:16:40 +0000
To: public-html-media@w3.org
Message-ID: <bug-29271-5436@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=29271

            Bug ID: 29271
           Summary: [MSE]  No way to implement sliding window for DVR
           Product: HTML WG
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Media Source Extensions
          Assignee: wolenetz@google.com
          Reporter: nikolay.dimitrov@viblast.com
        QA Contact: public-html-bugzilla@w3.org
                CC: jdsmith@microsoft.com, mike@w3.org,
                    public-html-media@w3.org
  Target Milestone: ---

The HTML5 specification states the following about media.seekable:
"The range might be continuously changing, e.g. if the user agent is buffering
a sliding window on an infinite stream. This is the behavior seen with DVRs
viewing live TV, for instance."

However, there is no way to implement this with MSE. It is only possible to
modify the duration (the end of the seekable range), but there is no way to
modify the start of the seekable range. Currently to implement DVR I have to
use a custom progress bar and to translate seek requests in the proper range.

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Received on Monday, 9 November 2015 15:16:47 UTC

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