[Bug 21171] New: Add an example of when addSourceBuffer might throw QUOTA_EXCEEDED_ERR

https://www.w3.org/Bugs/Public/show_bug.cgi?id=21171

            Bug ID: 21171
           Summary: Add an example of when addSourceBuffer might throw
                    QUOTA_EXCEEDED_ERR
    Classification: Unclassified
           Product: HTML WG
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Media Source Extensions
          Assignee: adrianba@microsoft.com
          Reporter: adrianba@microsoft.com
        QA Contact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-media@w3.org

Step 3 of the addSourceBuffer algorithm says: "If the user agent can't handle
any more SourceBuffer objects then throw a QUOTA_EXCEEDED_ERR exception and
abort these steps."

We would like to add an informative note describing what we think will be a
common restriction in initial implementations:

"For example, a user agent may throw QUOTA_EXCEEDED_ERR if the media element
has reached the HAVE_METADATA readyState."

Today, many media engines expect to process all the metadata for a presentation
at the beginning before indicating they have all the metadata. Allowing dynamic
changes to this will require more work.

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Received on Saturday, 2 March 2013 00:38:51 UTC