- From: Nigel Megitt via GitHub <sysbot+gh@w3.org>
- Date: Wed, 27 Sep 2017 12:22:16 +0000
- To: public-texttracks@w3.org
nigelmegitt has just created a new issue for https://github.com/w3c/webvtt: == Wide Review Comment 2017: unspecified edge margins make accurate positioning impossible == Copy/paste from https://lists.w3.org/Archives/Public/public-tt/2017Sep/0080.html - raising as an issue for tracking/disposition purposes. The user-agent defined edge margins used in section 6 Rendering effectively mean that the author of the file can not predict positions or line breaks accurately since the size and position of text cannot be known at authoring time. This prevents the author from being able to position captions in a location that avoids overlapping parts of the video that are important for the viewer to see in order to understand the content. This makes it effectively impossible to meet the BBC's [editorial subtitle guidelines](http://bbc.github.io/subtitle-guidelines/#Positioning) using WebVTT. Note that this comment must logically only apply when a single track is visible since WebVTT defines rules for multiple tracks being displayed simultaneously, in which case positioning is presumably outside the realm of the subtitle author, in the general case. Please view or discuss this issue at https://github.com/w3c/webvtt/issues/379 using your GitHub account
Received on Wednesday, 27 September 2017 12:22:09 UTC