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Re: ISSUE-163 navigating-tracks: Chairs Solicit Change Proposals

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Fri, 8 Jul 2011 19:43:25 +1000
Message-ID: <CAHp8n2=0Xrofcqhq7X_UTMcJXDG1U8QgE5cECbxn-bzYRkVfnw@mail.gmail.com>
To: Philip Jägenstedt <philipj@opera.com>
Cc: public-html@w3.org
On Fri, Jul 8, 2011 at 6:20 PM, Philip Jägenstedt <philipj@opera.com> wrote:
> On Fri, 08 Jul 2011 02:51:45 +0200, Silvia Pfeiffer
> <silviapfeiffer1@gmail.com> wrote:
>
>>
>>
>> On 08/07/2011, at 4:55 AM, "Tab Atkins Jr." <jackalmage@gmail.com> wrote:
>>
>>> On Thu, Jul 7, 2011 at 4:01 AM, Philip Jägenstedt <philipj@opera.com>
>>> wrote:
>>>>
>>>> OK, the second is not true. But if you're doing it like this, why bother
>>>> with cues at all? Wouldn't it be cleaner to have *only* a root <nav>
>>>> with
>>>> possible <nav> children? Using ranges for some chapters and cues for
>>>> other
>>>> is not very appealing, IMO.
>>>
>>> Agreed.  The markup in the wiki is very confusing, imo, since
>>> top-level chapters are indicated in a completely different way from
>>> subchapters.
>>>
>>
>> In my mind, the single-level subdivision  as in DVD chapters is the 80%
>> use case. Even with many Daisy files I have only seen single level
>> subdivision. This subdivision would also be the one that I would visually
>> represent in the player. I have an experiment at
>> http://html5videoguide.net/demos/google_io/3_navigation/ with chapter
>> markers on the timeline.
>>
>> So, the hierarchical navigation - as much as there is a need for it -
>> could just stay within the cue.
>>
>> That seemed an appropriate solution that wouldn't need any new HTML
>> features. I'm not wedded to this solution though.
>
> <nav> in WebVTT and new logic in getCueAsHTML are new features :) Given that
> we all agree that this is a <20% use case, doing something less intrusive
> but slightly less author-friendly seems rather reasonable...
>
> (As a side note, having all chapters be explicit ranges makes it easier to
> say "play this chapter and pause when done", possibly via Media Fragments
> #id or #chapter.)

Fair enough. I'm more than happy to find something that doesn't need
new markup. I guess it will, however, require mention of the parsing
algorithm and a note that browsers should expose this to accessibility
tools as a hierarchical navigation tree.

I also only just saw your idea of how to represent the hierarchies in
the player.
Another means could be a drop-down menu like done here:
http://www.xiph.org/video/vid1.shtml . That example also contains
multiple (i.e. 2) navigation levels.

Cheers,
Silvia.
Received on Friday, 8 July 2011 09:44:15 UTC

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