W3C home > Mailing lists > Public > public-apa@w3.org > February 2020

Re: Bullet Chatting - quick and dirty

From: Janina Sajka <janina@rednote.net>
Date: Wed, 12 Feb 2020 15:41:00 -0500
To: "Siegman, Tzviya - Hoboken" <tsiegman@wiley.com>
Cc: John Foliot <john.foliot@deque.com>, Judy Brewer <jbrewer@w3.org>, Roy Ran <ran@w3.org>, Kazuyuki Ashimura <ashimura@w3.org>, W3C WAI Accessible Platform Architectures <public-apa@w3.org>
Message-ID: <20200212204100.GE96791@rednote.net>
Tzviya, All:

With apologies and thanks to John Foliot for taking his "quick and
dirty" post APA call analysis out to a wider public ...

I believe we have a significant accessibility concern that bullet
chatting only become standardized at W3C with well considered
accessibility support. It seems to APA this technology can be fun for
those who can use it, and likely a significant challenge for various
groups of persons with disabilities including deaf, deaf-blind, low
vision, blind, and those with physical issues controlling where they
interact on screen. There's also, of course, a host of COGA issues.

So, this email is only to widen the circle of people aware with the hope
that it leads to more involvement on behalf of making the technology
maximally accessible.



John Foliot writes:
> So, this has many similar issues as timed-text (there is a mechanism for
> turning the "text" on or off based on timestamps). From the "Use Cases
> <https://w3c.github.io/danmaku/usecase.html>" page:
>    - Basic properties: body, appearance time, duration, font, font size,
>    color, etc.
>    - Timeline: The on-demand barcorder is a real-time insertion or custom
>    timeline for video playback time, live broadcasts, and other scenarios.
> However, I think the largest concern is also addressed here:
> Independence of space: Although it is displayed in the same element, each
> type of Bullet Chatting mode is in different layers in spatial calculation,
> and each mode can have multiple layers, and the Bullet Chatting occupancy
> in each layer does not overlap.
> It is this multiple layers (onion skinning) that appears to be the biggest
> concern: visually the comments (bullet chats) are two-dimensional (with the
> text "overlayed" on the background video), but technologically, each
> comment is potentially on a separate layer - making consumption confusing
> to out-right impossible for screen readers today (from what I can tell) due
> to "layer" focus issues.
> I think at a minimum we should seek to get them on a call where we can
> chat, and get more clarification. This is still early days (they are a
> Community Group) but I do see this as being something we need to watch
> carefully.
> JF
> -- 
> *John Foliot* | Principal Accessibility Strategist | W3C AC Representative
> Deque Systems - Accessibility for Good
> deque.com


Janina Sajka

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:	http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair, Accessible Platform Architectures	http://www.w3.org/wai/apa
Received on Wednesday, 12 February 2020 20:41:16 UTC

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