See also: IRC log
People, I'm trying to get some W3C help about our telecon channel
All, I'm trying to get our telecon channel unblocked
<eric_carlson> what is the pass code for the Zakim bridge?
<eric_carlson> never mind, I am in now
I'm working on getting Zakim to let me in
<scribe> scribe: janina
Silvia: Believes Ian's proposal
is best for moving forward; superior to proposals 2 &
3
... Makes all media elements
... Proposes to walk through the proposal
... Beginning look at Proposal #4 ...
Bob, Question about exclusive track list, will that change?
Silvia: Exclusive and multiple
track list come in as attribs
... Ian seems to believe we can only have one video at a time,
therefore exclusive
Bob: So how to do a mosaic of multiple videos
Silvia: So, you use separate
video elements on the page and style through CSS, create a
controller to get them to act together
... Or, if they're all inband tracks, then you need IDs on each
track and ref using media fragment URI
Eric: It would work, but it makes it difficult to have generic scripts for unknown content
Mark: If you create one, then the others are exposed and you can go forward
Eric: For Apple, this would be a step backwards because we already support multiple tracks; would be a step back for us
Silvia: So how does it now work?
Eric: You display however it was
authored
... QT has layers and each track is on video matrix that
controls where it displays
Silvia: So, if it's set up one way, PIP, for instance, how to display differently
Eric: Either in script by disaling all video not to be displayed; then using as source
Silvia: So we need to change from exclusive to multiple where we have default rendering, but could be changed as desired
Eric: Think that's right
... Don't see the exclusivity as helpful
Silvia: Think he's thinking about
slides with someone addressing a meeting, but I agree I'd
rather leave to a browser
... It would be nice to share a video that can render multiple
video
... Suggest tracklist be replaced as multiple, not
exclusive
... Not sure how some browsers will react, Opera ...
Eric: WebM can only have a single
video file
... Wonders Frank's opinion?
Frank: We don't yet support
multiple tracks
... We support that it's up to the UA to do this
Eric: More than one video track in a single file is highly uncommon, but we shouldn't have it as a restriction in the spec
Mark: In future, if pointing to a manifest, it will be more common; Should not require to download two videos when only one is to be displayed
janina: We do have the user reqs
which specify sign language video track
... Suggesting we check against user reqs when we think we have
the engineering we like, just be be sure we got everything
Silvia: I plan to do code examples
Eric: No reason to restrict audio tracks
Sean: Agrees
Silvia: Our proposal always added
kind label language and name ...
... Should we extend Ian's to also have gets for all four of
these?
... Label is also important for creating menus
Mark: Agree with both
Eric: Also
Silvia: Do we have use cases where we want looping?
Eric: Absolutely, the same as
looping on an individual file
... Suggest reset time to 0 when rendering reaches
$DURATION
Silvia: Good question, is it enough the group has loop state? Or each individual track?
Sean: Feel like we're badly reinventing SMIL
Silvia: SMIL does much more, though
Sean: Not suggesting we adopt all of SMIL; simply saying SMIL has support for everything we're discussing
Silvia: Think it would be difficult, but maybe worthy of the exercise?
Sean: Best we make sure we don't do something incompatible with that model
Silvia: Won't be used in the same context as SMIL, so why does it need to be compatible?
Judy: We are hearing from multiple directions that alignment would be useful
<sean> ACTION: Sean Explore reusing SMIL semantics for repeat [recorded in http://www.w3.org/2011/04/11-media-minutes.html#action01]
Silvia: Exploring metadata events ....
Sean: I'm think about this a bit
differently, splitting controller away from network parts
... That way controller need not be explicitly created, as
there's always one by default
Silvia: Is that basically just an IDL change?
Sean: Yes.
... But the network states are separate
Eric: Would you leave the existing interfaces?
Sean: It's just rearranging them, it's just more tidy
Eric: I find this interesting, but hesitate very much to remove anything we already have for compatability concerns
Sean: You just say they map to
the controller
... My problem, as currently we have things, is that the
controller need always be explicitly created
... I'd rather it were implicit
Eric: Actually, if you have elements in the same group, it is already implicit
Sean: I don't like that it doesn't do that if it's not in a group
Eric: Yes, that's an interesting
approach
... One issue listed in Wiki we haven't yet discussed is
default controls, think it's important to have UA default
controls
Frank: So, how would that work? A controller element positioned on the page?
Sean: yes, perhaps a shadow DOM
construct
... So, it might be something we could apply styling to
... And would be available by default
janina: Asks if anyone is opposed?
Eric: Not sure, but am conflicted
Sean: So this is a thought expiriment -- there's the shadow DOM, but no representation
Eric: Yes, a firewall between the shadow and the parent, so that js can't get to them
Frank: We would have the same limitation in IE
Eric: I haven't yet thought of a way to make it work
Frank: Question about proposal
4
... How to get track list count --- Ah, I see it now!
... So, media controller maps to some amount of UI elements in
background
... Is there a simple mapping here? A union of all the elements
in the group?
Eric: I'd say a union
... I personally believe we should expect all samples to be
played to be loaded first
Mark: Do we have a definitive list of track kinds that we want proposed for getkind?
Sean: Think it's still open ended
Mark: suggest we would want to close that at some point--a basic set?
Sean: Yes, but extensible
Frank: Audio, video and text?
Mark: Thought it would tell you "texted video description," "sign language translation," etc
Frank: What's the current thinking of displaying multiple text tracks simoultaneously
Sean: We're not restricted on audio, so why on text?
Frank: Yes, but not currently a spec req
Sean: So, at minimum, text for each audio track
general discussion of displaying multiple text tracks? spec reqs?
Frank: There are three states, off, (no events and nothing displayed); showing (js generated and siaplayed); hidden (nothing displayed, but events fired)
Eric: And if off, data not loaded
This is scribe.perl Revision: 1.135 of Date: 2009/03/02 03:52:20 Check for newer version at http://dev.w3.org/cvsweb/~checkout~/2002/scribe/ Guessing input format: RRSAgent_Text_Format (score 1.00) Found Scribe: janina Inferring ScribeNick: janina Default Present: Eric_Carlson, silvia, +44.154.558.aaaa, mark, Sean, Bob, janina, Frank, Judy Present: Eric_Carlson silvia +44.154.558.aaaa mark Sean Bob janina Frank Judy WARNING: No meeting title found! You should specify the meeting title like this: <dbooth> Meeting: Weekly Baking Club Meeting WARNING: No meeting chair found! You should specify the meeting chair like this: <dbooth> Chair: dbooth Got date from IRC log name: 11 Apr 2011 Guessing minutes URL: http://www.w3.org/2011/04/11-media-minutes.html People with action items: sean WARNING: Input appears to use implicit continuation lines. You may need the "-implicitContinuations" option.[End of scribe.perl diagnostic output]