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[Bug 19673] New: Seamless audio signal transitions at splice points

From: <bugzilla@jessica.w3.org>
Date: Tue, 23 Oct 2012 17:25:20 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-19673-2486@http.www.w3.org/Bugs/Public/>

          Priority: P2
            Bug ID: 19673
                CC: mike@w3.org, public-html-media@w3.org
          Assignee: adrianba@microsoft.com
           Summary: Seamless audio signal transitions at splice points
        QA Contact: public-html-bugzilla@w3.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: pal@sandflow.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Media Source Extensions
           Product: HTML WG

In scenarios such as adaptive bitrate, branching, video editing, and commercial
insertion, multiple media streams are spliced into a single continuous program.
Care should be taken when processing audio signals at each of the splice
points: the audio content on each side of the splice might not have been
authored in anticipation of a splice or, when audio is coded, the frame
boundaries of each stream might not align.

The MSE specification should ideally provide sufficient guidance to enable UA
implementations to support seamless audio splicing, and allow content to be
authored accordingly.

As a starting point, the following input document is meant to summarize
practices designed to prevent audio artifacts, enable a seamless splice
whenever possible and maintain synchronization between audio and other related
signals, e.g. video.


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Received on Tuesday, 23 October 2012 17:25:25 UTC

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