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[Bug 18655] New: audio gaps shouldn't be rendered as silence

From: <bugzilla@jessica.w3.org>
Date: Wed, 22 Aug 2012 17:22:12 +0000
To: public-html-media@w3.org
Message-ID: <bug-18655-5436@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=18655

           Summary: audio gaps shouldn't be rendered as silence
           Product: HTML WG
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Media Source Extensions
        AssignedTo: adrianba@microsoft.com
        ReportedBy: giles@mozilla.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-media@w3.org


Continuing discussion from bug 18571, the section "Media Segment Constraints"
says:

"Gaps between media segments that are smaller than the audio frame size are
allowed and should be rendered as silence. Such gaps should not be reflected by
buffered.
Note: This is intended to simplify switching between audio streams where the
frame boundaries don't always line up across encodings (e.g. Vorbis)."

Gaps should be allowed, but silence should not be specified. Silence is the
minimum one can do, and implementations can offer higher quality switching
through a variety of gap-concealment algorithms.

Likewise, overlaps should be allowed as well. The important thing is to
preserve the sample alignment so synchronization is maintained.

I propose the clause "and should be rendered as silence" be removed.

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Received on Wednesday, 22 August 2012 17:22:26 UTC

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