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[ttml1] Smooth transitions between ISDs should not be preferred

From: Nigel Megitt via GitHub <sysbot+gh@w3.org>
Date: Sun, 24 Dec 2017 22:57:46 +0000
To: public-tt@w3.org
Message-ID: <issues.opened-284385643-1514156264-sysbot+gh@w3.org>
nigelmegitt has just created a new issue for https://github.com/w3c/ttml1:

== Smooth transitions between ISDs should not be preferred ==
See also w3c/ttml2#485

The note beneath the `[associate region]` algorithm states:

> Where an implementation is able to detect significant similarity between two adjacent synchronic document instances, DOCinterN DOCinterN−1, then it is preferred that the implementation make the transition between presenting the two instances as smooth as possible ...

The use of the term "preferred" is territory-specific and not culturally accepted globally, so it should either be removed or scoped to the places where it is true. For example in the US smooth scrolling is preferred, whereas in the UK jump scrolling is preferred, and those preferences are strong active preferences.

I propose to change the wording to: "..., then the implementation may apply processing to make the transition between presenting the two instances as smooth as possible..." to remove the preference.

I suspect @mikedo could be particularly interested in this, based on my recollection of previous conversations.

Please view or discuss this issue at https://github.com/w3c/ttml1/issues/304 using your GitHub account
Received on Sunday, 24 December 2017 22:57:48 UTC

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