W3C home > Mailing lists > Public > public-html-bugzilla@w3.org > October 2012

[Bug 19784] New: timestampOffset with multiplexed Media Segments

From: <bugzilla@jessica.w3.org>
Date: Tue, 30 Oct 2012 16:15:04 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-19784-2486@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=19784

          Priority: P2
            Bug ID: 19784
                CC: mike@w3.org, public-html-media@w3.org
          Assignee: adrianba@microsoft.com
           Summary: timestampOffset with multiplexed Media Segments
        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

A Media Segment may contain an audio-video multiplex.

Transition between two Media Segments should take place on video frame
boundary.

The start times of audio and video essence may be offset within a Media
Segment. For instance, the first audio sample may be offset from the first
video sample to facilitate seamless splicing.

The MSE specification implies in the diagram of Section 2.8.2 that the
transition between two Media Segments occurs at the start of the added Media
Segment plus timestampOffset.

Does the transition between two Media Segments occur exactly at the start of
the added Media Segment plus timestampOffset?

Is timestampOffset alone sufficient to ensure that the transition between two
Media Streams occurs on a video frame boundary when audio and video essence
start time are offset?

Illustration provided at
https://docs.google.com/open?id=0Bz7s0dhnv-7HYjhadTktTGhrd2M

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
Received on Tuesday, 30 October 2012 16:15:10 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 30 October 2012 16:15:11 GMT