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Accessibility/Video a11y requirements: Difference between revisions
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Accessibility/Video a11y requirements (view source)
Revision as of 21:41, 11 October 2008
, 11 October 2008added DVB
(added links to automated ASL creation with avatars) |
(added DVB) |
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==== Bitmap (closed) captions ==== | ==== Bitmap (closed) captions ==== | ||
* sometimes closed captions are represented as a a sequence of transparent bitmaps which are overlayed onto the video at given time offsets to display the closed captions (sometimes used on DVDs | * sometimes closed captions are represented as a a sequence of transparent bitmaps which are overlayed onto the video at given time offsets to display the closed captions (sometimes used on DVDs, or [http://www.subtitling.com/downloads/DVB%20subtitling.pdf DVB] | ||
Discussion: | Discussion: | ||
* (-) like open captions, bitmap captions are restrictive because they are just pixels in the video and the actual caption text is not directly accessible other than through OCR | * (-) like open captions, bitmap captions are restrictive because they are just pixels in the video and the actual caption text is not directly accessible other than through OCR | ||