Re: Proposal from HbbTV

+1 to mode="UARendered".


Nigel



On 29/09/2014 16:53, "Bob Lund" <B.Lund@CableLabs.com> wrote:

>
>
>On 9/29/14, 9:27 AM, "Brendan Long" <B.Long@cablelabs.com> wrote:
>
>>On 09/28/2014 04:11 PM, Silvia Pfeiffer wrote:
>>>>> It's likely better exposed add a video track with burnt-in captions.
>>>>>I'd
>>>>> recommend that's how it would be shown in the track list. When
>>>>>activated,
>>>>> both the default video track and the captions track would then be
>>>>>rendered.
>>>> This pushes the interface complexity somewhere else, but not somewhere
>>>> helpful! I'd argue that the spec should get as close as possible to
>>>>matching
>>>> the media element model and using text tracks for this purpose is
>>>>better
>>>> than not doing so.
>>> Why is it not helpful? From the JS and user's point of view, that's
>>> exactly what such a track is: a video track with burnt in captions.
>>> Since it's now exposed in the list of video tracks, it can be selected
>>> and activated. That's all that's required for such a track. That's as
>>> useful as it gets, isn't it?
>>Wouldn't exposing captions as a video track + burned in captions create
>>weird cases when you have multiple video tracks (multiple camera angles
>>for example)? If the captions apply to all of the videos, then you'll
>>have an explosion of video tracks instead of a simple list of video
>>tracks and a simple list of captions to go with it.
>>
>
>The current HTML spec doesn¹t support a cue-less text track very well so
>treating it as a video track with burned-in text is an alternative. This
>could result in a large number of these tracks for media resources with N
>video tracks and M cue-less text tracks (N x M).
>
>Another alternative is to enhance text track semantics to better
>accommodate cue-less text tracks. One could define a new text track mode,
>e.g. ³UARendered" defined as ³Indicates that the text track is active, the
>user agent is actively displaying the data in the track but no cues are
>active and no events are fired.²
>
>
>The only legal modes for such a track would be ³disabled² or ³UARendered².
>
>
>

Received on Tuesday, 30 September 2014 10:02:15 UTC