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[imsc] APA comment: align altText restrictions with HTML alt attribute

From: Nigel Megitt via GitHub <sysbot+gh@w3.org>
Date: Tue, 30 Jan 2018 15:31:18 +0000
To: public-tt@w3.org
Message-ID: <issues.opened-292825923-1517326277-sysbot+gh@w3.org>
nigelmegitt has just created a new issue for https://github.com/w3c/imsc:

== APA comment: align altText restrictions with HTML alt attribute ==
>From https://lists.w3.org/Archives/Public/public-tt/2018Jan/0270.html

Section 7.7.4 itts:altText.  While we see this feature as useful for accessibility purposes, it should be mandatory for images rather than recommended only. As mentioned in the spec, one could take the pertaining text passage from the text profile document instance – but (1) an accompanying text profile is not required, and (2) the alternative text for the image could be different from the textual caption. Therefore, the itts:altText element should always be specified, but it should be empty for decorative images (not clear if a “decorative image” used as a caption makes sense anyway). By requiring an itts:altText for every image, but allowing for an empty element in case of a decorative image, we would align it with the alt attribute in HTML5 for images.


Please view or discuss this issue at https://github.com/w3c/imsc/issues/321 using your GitHub account
Received on Tuesday, 30 January 2018 15:31:20 UTC

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