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For partially usable media data, the specification indicates that the UA should "render just the bits it can handle and ignore the rest." What happens if a caption or secondary audio stream fails to load? Suggest that this be revised to require the UA to present an opportunity to load fallback content when it is available.
EDITOR'S RESPONSE: This is an Editor's Response to your comment. If you are satisfied with this response, please change the state of this bug to CLOSED. If you have additional information and would like the editor to reconsider, please reopen this bug. If you would like to escalate the issue to the full HTML Working Group, please add the TrackerRequest keyword to this bug, and suggest title and text for the tracker issue; or you may create a tracker issue yourself, if you are able to do so. For more details, see this document: http://dev.w3.org/html5/decision-policy/decision-policy.html Status: Did Not Understand Request Change Description: no spec change Rationale: Could you elaborate on how you envisage this working? Would it treat these errors as fatal and continue down the source list? Or...? There's a note in the spec saying that in a future version an event will be fired in this case to allow scripts to make the UA use another source file, would that be enough? Alternatively, would you just want it to be possible for the UA to consider certain substreams as "required", such that if it can't play those streams, it can offer the user the option of trying another?
HTML Accessibility Task force has decided not to track this.
The HTML Accessibility Task Force intends to track these issues, per the proposal at http://lists.w3.org/Archives/Public/public-html-a11y/2010Jan/0245.html.
http://www.w3.org/2002/09/wbs/44061/20080513_bugs/results#xq3 Take up in the media sub-group to develop a spec edit proposal. Assign the bug to John Foliot to track that this is addressed.
Related to the general question of a consistent approach to embedded content, adding dependency.
During the media sub-team conference call of March 9, 2011 the team feels that this bug has been subsumed by Issue 152 (http://www.w3.org/html/wg/tracker/issues/152)
Discussed in HTML Accessibility TF Meeting on 06 Feb 2014 http://www.w3.org/2014/02/06-html-a11y-minutes.html#item05 RESOLVED to close RATIONALE: subsumed by Issue 152 (http://www.w3.org/html/wg/tracker/issues/152)