[webvtt] Wide Review Comment 2017: Content signalling

nigelmegitt has just created a new issue for https://github.com/w3c/webvtt:

== Wide Review Comment 2017: Content signalling ==
Copy/paste from https://lists.w3.org/Archives/Public/public-tt/2017Sep/0080.html - raising as an issue for tracking/disposition purposes.

WebVTT is able to carry data intended for different purposes – captions, chapters, metadata etc. However the lack of signalling within documents creates an asset management and validation problem. If we have 3 WebVTT files associated with a single video asset, how do we know which is which? How would we validate them? The same issue arises with languages: it is impossible to signal the primary language for a WebVTT file within the file; requiring it to be set by the HTML srclang attribute is, frankly, completely useless within the scope of the WebVTT specification. How can an HTML page be generated to specify it correctly, and how can the value be validated for any given WebVTT file unless the language identifier is present within it? What if the WebVTT file is intended for use without being embedded in an HTML document?

The three types of WebVTT file indicated in §4.6 appear to be indistinguishable by inspecting the file.


Please view or discuss this issue at https://github.com/w3c/webvtt/issues/368 using your GitHub account

Received on Wednesday, 27 September 2017 11:01:25 UTC