[Bug 27054] Accessibility Concerns

https://www.w3.org/Bugs/Public/show_bug.cgi?id=27054

--- Comment #2 from Sergey Konstantinov <twirl-team@yandex.ru> ---
Our intent is as follows:

- a number of technologies which make video accessible exists; some of them
work or could potentially work in the Web;
- we are very concerned that EME (especially coupled with hardware decryption)
automatically makes most of these technologies inapplicable;
- so we'd like to encourage HTML WG to evaluate this question: find out what
Web video accessibility technologies exist and how to make them work with EME.

For example, to be sure that user will be able to increase subtitles font size
or redirect them to a system text-to-speech service, EME spec should require
CDM to have an API to transfer subtitles back to user agent after decryption
and/or encourage developing encrypted media transfer format with flat
unencrypted subtitles stream alongside encrypted video stream.

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Received on Friday, 17 October 2014 08:14:38 UTC