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Comment LC-1411
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Commenter: David Keech <david.keech@bsi-global.com> on behalf of British Standards Instution, London, UK

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Resolution status:

7. In the section "Examples of conformance claims", "jpeg" is specified as a requirement of one example (examples use "Real Video" and "png" in a similar manner). These are not testable specifications in the same sense as XHTML 1.0 (Strict) - for example progressive jpeg support was only added to many browsers long after the basic sub-baseline jpeg (actually correctly JPEG) decoding was implemented. IS 10918-1 | T.81 (which presumably is what is intended by JPEG) defines a 'shopping list' of image compression techniques, including a baseline. Actual JPEG implementations excludes many items in the list, and add other items (typically JFIF/EXIF file support), and are, almost without exception, sub-baseline. A claim that an item "relies upon" jpeg (sic) is fairly meaningless, and is dependent on many things other than a correct interpretation of parts of IS 10918-1 (for example bit resolution and colour rendering of the display)
878 IS PARENT
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(Please make sure the resolution is adapted for public consumption)


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