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This was was cloned from bug 17157 as part of operation convergence. Originally filed: 2012-05-23 12:20:00 +0000 ================================================================================ #0 contributor@whatwg.org 2012-05-23 12:20:15 +0000 -------------------------------------------------------------------------------- Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html Multipage: http://www.whatwg.org/C#sourcing-out-of-band-text-tracks Complete: http://www.whatwg.org/c#sourcing-out-of-band-text-tracks Comment: <track> Need to await a stable state before assigning /URL/ in the first run Posted from: 85.227.154.145 by simonp@opera.com User agent: Opera/9.80 (Macintosh; Intel Mac OS X 10.7.3; U; en) Presto/2.10.229 Version/11.64 ================================================================================ #1 Simon Pieters 2012-05-23 12:26:18 +0000 -------------------------------------------------------------------------------- Consider var track = document.createElement('track'); track.src = 'foo'; When the track is created, the loading algorithm starts, which immediately stores the track URL (which is the empty string) and runs the /download/ step async. That step says to fire an 'error' event if track URL is empty and then move on to the /monitoring/ step. Since it's async, it's racy as to whether the script will have set .src yet or not. This is clearly bogus. We should await a stable state before storing /URL/ and starting the download. Editorial comment: Since the same behavior should happen after the /monitoring/ step, these steps could be at the top of the /download/ so you don't need to have the exact same steps repeated in two places in the algorithm. ================================================================================ #2 Simon Pieters 2012-05-23 17:38:48 +0000 -------------------------------------------------------------------------------- (In reply to comment #1) > Consider > > var track = document.createElement('track'); > track.src = 'foo'; Make that: var track = document.createElement('track'); track.mode = 'showing'; track.src = 'foo'; ================================================================================ #3 Simon Pieters 2012-06-04 05:21:34 +0000 -------------------------------------------------------------------------------- *** Bug 17156 has been marked as a duplicate of this bug. *** ================================================================================
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: Accepted Change Description: already applied http://www.w3.org/html/wg/drafts/html/master/single-page.html#sourcing-out-of-band-text-tracks Rationale: Step 5 of the algorithm to "start the track processing model for a text track and its track element" awaits a stable state. I think this was included in a patch since you registered the bug.