W3C home > Mailing lists > Public > whatwg@whatwg.org > December 2008

[whatwg] Thoughts on video accessibility

From: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
Date: Wed, 10 Dec 2008 07:30:29 +1100
Message-ID: <2c0e02830812091230u2f45ceaat635afbe63031a942@mail.gmail.com>
Also, for those interested, metavid and mv_embed are examples of use of ROE:
http://metavid.org/w/index.php/Mv_embed

Metavid uses
  <video roe="my_roe_file.xml">
for clean remote embedding of multiple text/video/audio tracks in a
single xml encapsulation.

An example of such embeds is here: http://metavid-mike.blogspot.com/

Regards,
Silvia.

On Wed, Dec 10, 2008 at 3:49 AM, Silvia Pfeiffer
<silviapfeiffer1 at gmail.com> wrote:
> I heard some complaints about there not being any implementation of
> the suggestions I made.
>
> So here goes:
>
> 1. out-of-band
> There is an example of using srt with ogg in a out-of-band approach here:
> http://v2v.cc/~j/jquery.srt/
> You will need Firefox3.1 to play it.
> The syntax of what Jan implemented is different to what I proposed,
> but I wanted to take it forward and make it more generic.
>
> 2. in-band
> There is also a draft implementation of srt inside Ogg through the
> OggText specification, but I it's not released yet. It is also not as
> relevant to this group as the out-of-band example.
>
> Cheers,
> Silvia.
>
>
>
> On Tue, Dec 9, 2008 at 7:33 PM, Robert O'Callahan <robert at ocallahan.org> wrote:
>> On Tue, Dec 9, 2008 at 6:20 PM, Martin Atkins <mart at degeneration.co.uk>
>> wrote:
>>>
>>> Silvia Pfeiffer wrote:
>>>>
>>>> I'm interested to hear people's opinions on these ideas. I agree with
>>>> Ralph and think having a simple, explicit mechanism at the html level
>>>> is worthwhile - and very open and explicit to a web author. Having a
>>>> redirection through a ROE-type file on the server is more opaque, but
>>>> maybe more consistent with existing similar approaches as taken by
>>>> RealNetworks in rm files and WindowsMedia files in asx files.
>>>>
>>>
>>> This (having a separate document that references other streams) is what I
>>> was thinking of. I guess which is more natural depends on who is doing the
>>> assembling. If it is the HTML author that takes the individual pieces and
>>> links them together then doing it in the HTML is probably easiest.
>>
>>
>> For what it's worth, loading an intermediate document of some new type which
>> references other streams to be loaded adds a lot of complexity to the
>> browser implementation. It creates new states that the decoder can be in,
>> and introduces new failure modes. It creates new timing issues and possibly
>> new security issues.
>>
>> Rob
>> --
>> "He was pierced for our transgressions, he was crushed for our iniquities;
>> the punishment that brought us peace was upon him, and by his wounds we are
>> healed. We all, like sheep, have gone astray, each of us has turned to his
>> own way; and the LORD has laid on him the iniquity of us all." [Isaiah
>> 53:5-6]
>>
>
Received on Tuesday, 9 December 2008 12:30:29 UTC

This archive was generated by hypermail 2.3.1 : Monday, 13 April 2015 23:08:46 UTC