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Re: Roll-up captions in WebVTT

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Tue, 29 Nov 2011 10:42:06 +1100
Message-ID: <CAHp8n2kcXv59EiDQyB6gjHwm813SkP4LUtFRKGpmfP+SirO9rQ@mail.gmail.com>
To: Christian Vogler <christian.vogler@gallaudet.edu>
Cc: Ian Hickson <ian@hixie.ch>, public-texttracks@w3.org
I think that's indeed the effect that YouTube is trying to replicate,
but hasn't quite got right yet.

So, this is indeed a much better example to explain roll-up captions.

Thanks,

Silvia.

On Tue, Nov 29, 2011 at 10:39 AM, Christian Vogler
<christian.vogler@gallaudet.edu> wrote:
> Take a look here: http://www.youtube.com/watch?v=F_q-RRXw-vY
>
> In that video, roll-up is actually very readable and leads the eye
> very well with respect to focusing attention. No captioning or steno
> errors in this video, but I hope this gets the point across.
>
> Christian
>
> On Mon, Nov 28, 2011 at 6:36 PM, Christian Vogler
> <christian.vogler@gallaudet.edu> wrote:
>>> That's like ten times more annoying to read than the normal captions on
>>> that video. I think if we are to support roll-up captions we need a far
>>> more convincing use case.
>>
>> Two points in response:
>>
>> 1. Roll-up captions are essential for live captioning where the text
>> is transmitted as the captioner types, especially when steno errors
>> and subsequent corrections are factored in.  Another issue is the
>> sheer number of words per minute during live captioning, where without
>> roll-up you would end up missing the context half of the time. This
>> usage scenario is very common during live broadcasts in the United
>> States, where captions are not only roll-up, but also appear word by
>> word, instead of line by line. I'll check around if I can find a video
>> clip that shows this clearly.
>>
>> 2. The implementation of roll-up in this video is poor. The
>> positioning and alignment jumps around with every roll up, which of
>> course makes it very hard to read.
>>
>> Now come to think of it, a corollary is that roll-up support by itself
>> is not sufficient. You also need a way to paste on captions live word
>> by word for it to be truly useful.
>>
>> Best regards
>> Christian
>> --
>> Christian Vogler, PhD
>> Director, Technology Access Program
>> Department of Communication Studies
>> SLCC 1116
>> Gallaudet University
>> http://tap.gallaudet.edu/
>> VP: 202-250-2795
>>
>
>
>
> --
> Christian Vogler, PhD
> Director, Technology Access Program
> Department of Communication Studies
> SLCC 1116
> Gallaudet University
> http://tap.gallaudet.edu/
> VP: 202-250-2795
>
Received on Monday, 28 November 2011 23:42:58 UTC

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