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Captions not in Text-Format


From: wolfgang.berndorfer@zweiterblick.at
Date: Sep 2, 2022 7:29AM

Captions may be provided in a caption-file OR as pure graphic in a video.
The definition says: "synchronized visual and/OR text alternative."

So pure graphical captions pass SC 1.2.2 and 1.2.4.

But what about people who are hard of hearing AND visually impaired?

And what about SR users who want to find out the correct spelling of an
unknown term or name?

"For optimum accessibility, provide a separate caption file of the
description of visual information."

( <https://www.w3.org/WAI/media/av/captions/>

1. Are graphical captions an issue for SC 1.4.5 Images of text? Neither the
Understanding examples nor techs suggest that.

2. Is there any other SC that covers the problem?

3. Is a caption file (WebVTT, .) the obvious text alternative regarding to
SR support?

Thanks for clarification!