[Bug 26921] New: [InbandTracks] DASH trackId

https://www.w3.org/Bugs/Public/show_bug.cgi?id=26921

            Bug ID: 26921
           Summary: [InbandTracks] DASH trackId
           Product: HTML WG
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Sourcing In-band Media Resource Tracks
          Assignee: silviapfeiffer1@gmail.com
          Reporter: cyril.concolato@telecom-paristech.fr
        QA Contact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-admin@w3.org

"Content of the 'id' attribute in the AdaptationSet or ContentComponent
element. Empty string if 'id' attribute is not present."

The AdaptationSet@id is not unique within an MPD, but within a Period. The
Period@id is unique within an MPD, even after MPD updates. Similarly, the
ContentComponent@id is unique only within the AdaptationSet. Additionally, it
is not clear how representations are exposed.

I'd suggest using the triplets (Period@id, AdaptationSet@id, Representation@id
(or ContentComponent@id) to generate an id for the track. It may be useful to
use the MPD fragment identifiers for that but I'm not sure we can address
representations or sub-representations properly.

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Received on Monday, 29 September 2014 08:44:35 UTC