- From: <bugzilla@jessica.w3.org>
- Date: Tue, 08 May 2012 21:07:38 +0000
- To: public-html@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=17004 Summary: Define a timestamp offset mechanism Product: HTML WG Version: unspecified Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: Media Source Extensions AssignedTo: adrianba@microsoft.com ReportedBy: acolwell@chromium.org QAContact: public-html-bugzilla@w3.org CC: mike@w3.org, public-html-wg-issue-tracking@w3.org, public-html@w3.org The current spec text does not provide a mechanism to apply an offset to timestamps in media segments. This feature is primarily for ad insertion and mashups use cases. It would allow web applications to easily append content into the middle of presentations without resorting to format parsing & rewriting to adjust the timestamps. Method signature suggestions: void sourceTimestampMapping(in double presentationTimestamp, in double segmentTimestamp) -- or -- void sourceTimestampOffset(in double timstampOffset) The method would specify the timestamp mapping to use for future media segments that get appended. If the UA is in the middle of parsing a media segment, it must defer applying the new offset until the end of the current segment. The mapping would be applied at append time before the data goes into the source buffer. This allows the source buffer to solely deal with presentation timestamps. This is just an initial outline for the feature. There are likely other semantics that need to be nailed down as well. -- Configure bugmail: https://www.w3.org/Bugs/Public/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
Received on Wednesday, 9 May 2012 02:20:21 UTC