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{minutes} HTML WG media telecon 2015-08-11 - MSE bug status and MSE CR test suite

From: Joe Steele <steele@adobe.com>
Date: Tue, 11 Aug 2015 15:29:15 +0000
To: "public-html-media@w3.org" <public-html-media@w3.org>
Message-ID: <5A6D56AF-2880-47E4-916D-68D5C1F70885@adobe.com>
http://www.w3.org/2015/08/11-html-media-minutes.html <http://www.w3.org/2015/08/11-html-media-minutes.html>

HTML Media Task Force Teleconference

11 Aug 2015

See also: IRC log <http://www.w3.org/2015/08/11-html-media-irc>
Attendees <>
markw, davide, jdsmith, adrianba, cwilso

Topics <http://www.w3.org/2015/08/11-html-media-minutes.html#agenda>
role call, agenda <http://www.w3.org/2015/08/11-html-media-minutes.html#item01>
MSE test suite status <http://www.w3.org/2015/08/11-html-media-minutes.html#item03>
New MSE bugs <http://www.w3.org/2015/08/11-html-media-minutes.html#item04>
Bug 29002 - [MSE] It is possible to append media segments when no corresponding init segment has been appended <http://www.w3.org/2015/08/11-html-media-minutes.html#item05>
Bug 29008 - [MSE] Media Segment Header is not defined <http://www.w3.org/2015/08/11-html-media-minutes.html#item06>
Summary of Action Items <http://www.w3.org/2015/08/11-html-media-minutes.html#ActionSummary>
<trackbot> Date: 11 August 2015
scrbe: joesteele
<scribe> scribe: joesteele
role call, agenda

<paulc> dropped off a minute there
MSE test suite status

<paulc> http://w3c.github.io/test-results/media-source/all.html <http://w3c.github.io/test-results/media-source/all.html>
paulc: stil outstanding is update from Jerry on IE11 or Edge
MattWolenetz: Jerry has also been getting up to speed
<paulc> Track interface pieces: https://lists.w3.org/Archives/Public/public-html-media/2015Jul/0015.html <https://lists.w3.org/Archives/Public/public-html-media/2015Jul/0015.html>
paul: some discussion about track Interface implementation has been done
MattWolenetz: those will need valid tests and an implementation, Chrome is behind on that right now for me to do
… some text tracks, no audio tracks as yet
paulc: Microsoft thought there might be some issues withthe WebIDL here
MattWolenetz: I think the WebIDL interfaces were failing pretty badly on Chrome, need to follow up there
… e.g. source buffer interface operations — Firefox, IE have slightly better passing. Might be a change on one side or the other
… have a bug on that
… 2 things — track stuff is known work with known test gaps (no implementation)
… other part is Chrome is failing some of the WebIDL stuff (internal bug on that)
paulc: can you respond to the thread with that status and point to the Chrome bugs?
MattWolenetz: sure
New MSE bugs

Bug 29002 - [MSE] It is possible to append media segments when no corresponding init segment has been appended

https://www.w3.org/Bugs/Public/show_bug.cgi?id=29002 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=29002>
paulc: have you had a chance to look Matt?
<paulc> Matt responded as INVALID: https://www.w3.org/Bugs/Public/show_bug.cgi?id=29002#c1 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=29002#c1>
MattWolenetz: believe it is an invalid scenario
… once you reach “have metadata” state and append something else, that should call the “end of stream” algorithm.
… that ends up chaining to the HTML media element stuff and gettting into the resource selection alg
… after that you need to make sure there is no error on the media element, but there is so you can’t append anything more
… not sure how you could do successfull parsing in this case
paulc: lets see how the original responder comes back
MattWolenetz: would be open to fixing if it looks fixable
Bug 29008 - [MSE] Media Segment Header is not defined

https://www.w3.org/Bugs/Public/show_bug.cgi?id=29008 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=29008>
<paulc> Matt's repsonse: https://www.w3.org/Bugs/Public/show_bug.cgi?id=29008#c1 <https://www.w3.org/Bugs/Public/show_bug.cgi?id=29008#c1>
MattWolenetz: seems like there is an undefined thing here — a bit ambiguous
… need a header to proceed, but what that is - is not defined
… would be great to have coded frames emittable without the abort
… suggested replacement text seems to make sense to me
… open to better text if available
… Either we need to define this for each byte stream (seems non-interoperable)
… or we leave this up to the implementation to get the decodable frames (more flexible)
paulc: now we can go over the existing bugs again — for the list of bugs in the agenda any changes?
jdsmith: no updates yet — I know I am overdue
MattWolenetz: also here
jdsmith: I could devote some time, but I have been prioritizing EME as that seems more pressing
… could put this first instead
… talked about the capabilities thing, which has kept me from that
paulc: I would make sure you are comfortable with the text results first
… while you are doing that if Matt can focus on the bugs, maybe we will have more information on the test results and track attrobute question
… if Matt also makes headway on the bugs we will be in better shape
… I think the best plan is to give you some time back now to work on these
scribe: reconvene in 2 weeks
I will stay in touch with the editors
MattWolenetz: Jerry do you think we need IE11 results on the test page? or are you focusing on Edge?
jdsmith: we don’t intend to make changes to IE11 - focusing on Edge
… but would like to have both on the page still for now
MattWolenetz: ok
paulc: bye
Summary of Action Items <>[End of minutes]
Minutes formatted by David Booth's scribe.perl <http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm> version 1.140 (CVS log <http://dev.w3.org/cvsweb/2002/scribe/>)
$Date: 2015/08/11 15:26:43 $

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