[whatwg] Thoughts on video accessibility
Calogero Alex Baldacchino
alex.baldacchino at email.it
Sat Dec 27 12:55:05 PST 2008
Silvia Pfeiffer ha scritto:
> Hi Ian,
> Thanks for taking the time to go through all the options, analyse and
> understand them - especially on your birthday! :-) Much appreciated!
Than, happy birthday to Ian!
> The only real issue that we have with separate files is that the
> captions may get lost when people download the video, store it
> locally, and share it with friends. Maybe we should consider solving
> this differently. Either we could encapsulate into the video container
> upon download. Or we could create a zip-file or tarball upon download.
> I'd just find it a big mistake to ignore the majority use case in the
> standard, which is why I proposed the <text> elements inside the
> <video> tag.
A flying thought: why not thinking also to a further option for
embedding everything in a sort of "all-in-one" html page generated on
the fly when downloading, making of it a global container for video and
text to be consumed by UAs (while maintaining the opportunity to
download a video as a separate file, of course)? For instance, the video
itself might become the base64-encoded (or otherwise acceptably encoded)
value of a data-* attribute (or a more specific attribute) to be decoded
by a script (as well generated on the fly) and served to the video
better, the UA might do that itself by supporting the "data:" protocol
as a valid source for the video, or a fragid pointing to an element
following the </video> tag, perhaps a <paintext> or something else, and
containing the encoded video); while text elements might wrap the
corresponding timed text file, to be embedded into the page as bare
text, similarly to a script code -- if a certain format contained <text>
tag, those might be changed into <text> or similarly (or perhaps
the file content might be encoded as well) to avoid conflicts with html
Of course, it's a "first-glance" idea, and needs further considerations
on its reliability (e.g. such an html page perhaps shouldn't be the
source set for a video in another page, and an option should be provided
to extract embedded contet; seeking might require a sequential decoding
to reach a desired point, and so on).
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